LAB HOLDINGS INC
S-4, 1999-04-13
MEDICAL LABORATORIES
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<PAGE>
                                                Registration No. 333- _________
     As filed with the Securities and Exchange Commission on April 13, 1999
===============================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM S-4
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933

                               LAB HOLDINGS, INC.
             (Exact name of registrant as specified in its charter)

              MISSOURI                 8071                     43-1039532
        (State or other    (Primary Standard Industrial      (I.R.S. employer
         jurisdiction of    Classification Code Number)  identification number)
incorporation or organization)
                        5000 West 95th Street, Suite 260
                          Shawnee Mission, Kansas 66207
                                 (913) 648-3600
    (Address, including zip code, and telephone number, including area code,
                  of registrant's principal executive offices)

                              John H. Calvert, Esq.
                               Lathrop & Gage L.C.
                          2345 Grand Blvd., Suite 2800
                              Kansas City, MO 64108
                                 (816) 460-5807
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                 with copies to:
            P. Anthony Jacobs                         Whitney F. Miller, Esq.
   President and Chief Executive Officer              Morrison & Hecker, LLP
            Lab Holdings, Inc.                          2600 Grand Avenue
     5000 West 95th Street, Suite 260                 Kansas City, MO 64108
      Shawnee Mission, Kansas 66207                       (816) 221-0355
             (913) 648-3600

                  Approximate date of commencement of proposed
              sale to the public: As Soon as Practicable after the
                 Effective Date of this Registration Statement.

         If  the  Securities  registered  on  this  Form  are to be  offered  in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box. __

         If this form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the  Securities  Act,  check the following box and
list the Securities Act registration  statement number of the earlier  effective
registration statement for the same offering. __.

         If this  form is a  post-effective  amendment  filed  pursuant  to Rule
462(d) under the Securities Act, check the following box and list the Securities
Act  registration   statement  number  of  the  earlier  effective  registration
statement for the same offering. __
<PAGE>
<TABLE>
<CAPTION>
===============================================================================================
                         CALCULATION OF REGISTRATION FEE
                                                                                                                      
  Title Of Each                    Proposed Maximum     Proposed Maximum         
Class Of Securities  Amount to Be   Offering Price     Aggregate Offering         Amount of
 To Be Registered     Registered      Per Unit            Price  (2)           Registration Fee
- -------------------  ------------  ----------------    ------------------      ----------------
<S>                  <C>            <C>                <C>                      <C>  

Common Stock, par   
value $0.01 per
 share (1)             3,567,933        N/A               $21,980,060               $6,111
(1)  Consists of shares of the  Registrant's  common stock that may be issued in
the merger as described herein.
===============================================================================================
</TABLE>

(2)  Estimated  solely  for the  purpose of  calculating  the  registration  fee
pursuant to Rules 457(f) and 457(c)(1) and (3). The amount  reflects the average
of the high and low prices of LabOne,  Inc.  common  stock on April 9, 1999,  of
$10.813  times the  3,567,933  shares of LabOne,  Inc.  common stock that may be
received by the Registrant in the merger, less $16,600,000 cash that may be paid
by the Registrant for up to half of such LabOne, Inc. shares in the merger.

The Registrant hereby amends this  Registration  Statement on such date or dates
as may be necessary to delay its effective date until the Registrant  shall file
a further amendment which specifically  states that this Registration  Statement
shall  thereafter  become  effective  in  accordance  with  Section  8(a) of the
Securities  Act of  1933 or  until  this  Registration  Statement  shall  become
effective  on such  date  as the  Securities  and  Exchange  Commission,  acting
pursuant to said Section 8(a), may determine.
================================================================================
<PAGE>
The information in this Joint Proxy Statement/Prospectus is not complete and may
be changed.  We may not sell these securities  until the registration  statement
filed with the Securities and Exchange Commission is effective. This Joint Proxy
Statement/Prospectus  is not an offer  to sell  these  securities  and it is not
soliciting an offer to buy these securities in any state where the offer or sale
is not permitted.
         Preliminary Copies, subject to completion dated April __, 1999
         [labh logo]                                       [labs logo]
                   MERGER PROPOSED --- YOUR VOTE IS IMPORTANT

                 TO THE STOCKHOLDERS OF LAB HOLDINGS AND LABONE:

The Boards of Directors  of Lab  Holdings,  Inc. and LabOne,  Inc. and a Special
Committee of independent  LabOne directors have approved a merger of LabOne into
Holdings  and  recommend  that you vote for  approval of the  merger.  After the
merger,  Holdings' name will be LabOne,  Inc.,  its  management  will consist of
LabOne  management  and its Board  will  consist of nine of the  current  LabOne
directors as well as three new independent non-management directors.

Stockholders  of  Holdings  will  have  each  of  their  Holdings  shares  split
immediately  before the merger into 1.5 shares.  Stockholders  of LabOne,  other
than Holdings,  may elect to have each of their existing LabOne shares exchanged
for one share of the combined  company,  $12.75 in cash or a combination of cash
and shares.  However,  if the LabOne cash election shares exceed a cash limit of
$16.6  million  (approximately  50% of eligible  shares),  then the cash will be
allocated on a pro rata basis among the cash election shares.

Holdings  now  owns  80.5%  of  LabOne.  If no cash  is  elected  by the  LabOne
Stockholders, Holdings stockholders will own about 78.9% of the combined company
and LabOne  stockholders  other than Holdings  will own about 21.1%.  If maximum
cash is elected by LabOne  stockholders,  Holdings  stockholders  will own about
88.1% and LabOne stockholders other than Holdings will own about 11.9%.

The  merger  is  designed  to  create  the  potential  for  long-term  growth in
stockholder  value of the combined company,  primarily through  acquisitions and
the continued development of strategic alliances.

It will also  allow  Holdings  stockholders  to enjoy the  benefits  of a direct
investment  in the  business  of LabOne  and its  management  while  eliminating
duplicate holding company management and  administrative  costs. We also believe
that the merger should result in higher trading volumes,  greater  liquidity,  a
more efficient market and increased investor interest in the common stock of the
combined company.

The merger will be tax-free to LabOne and Holdings stockholders for U.S. federal
income tax purposes, except for taxes resulting from cash received.

The merger requires the approval of the holders of two-thirds of the outstanding
shares of  Holdings,  a  majority  of the  outstanding  shares  of LabOne  and a
majority of the shares voted by LabOne Unaffiliated Stockholders.  These matters
will be voted on at the  annual  meetings  of both  companies  which  have  been
scheduled to be held on _____, 1999.

Regardless of the number of shares you own or whether
you plan to attend in person, it is important that your
shares be represented and voted at the meetings.  Voting
instructions are inside.
<PAGE>
This document provides you with detailed information
about the proposed merger.    We encourage you to read
this entire document carefully.

- -----------------------------------
P. Anthony Jacobs
President and Chief Executive Officer
Lab Holdings, Inc.

- ---------------------------------------
W.T. Grant II
Chairman, President and Chief Executive Officer
LabOne, Inc.

For a discussion of certain risk factors which you should consider in evaluating
the merger,  see "Risk Factors" beginning on page 13. 

NEITHER THE SECURITIES AND
EXCHANGE COMMISSION NOR ANY STATE SECURITIES REGULATOR HAS APPROVED THE HOLDINGS
COMMON STOCK TO BE ISSUED IN THE MERGER OR  DETERMINED  WHETHER THIS DOCUMENT IS
TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

This Joint Proxy  Statement/Prospectus  is dated _____, 1999, and is first being
mailed to stockholders on ______, 1999.

<PAGE>

                               LAB HOLDINGS, INC.
                              5000 West 95th Street
                          Shawnee Mission, Kansas 66207

                  NOTICE OF 1999 ANNUAL MEETING OF STOCKHOLDERS
                             To be held July , 1999

         NOTICE IS HEREBY GIVEN THAT the 1999 annual meeting of  stockholders of
Lab  Holdings,  Inc.,  a  Missouri  corporation,  will be held  on_____________,
July___,       1999      at      _:00      p.m.       local       time,       at
___________________________________________ to consider and vote upon:

1.   A  proposal  to adopt the  Agreement  and Plan of Merger,  as  amended  and
     restated,  by and between Lab Holdings,  Inc. and LabOne, Inc., dated as of
     March 7, 1999, which is described in this Joint Proxy Statement/Prospectus,
     and  the  transactions   contemplated  thereby.   Pursuant  to  the  merger
     agreement,  (a) shares of Lab Holdings, Inc. common stock will be split 1.5
     for one  immediately  prior to the  merger,  (b) LabOne will merge with and
     into  Holdings,  with Holdings  being the surviving  corporation,  (c) each
     outstanding  share of LabOne  Common  Stock  (other  than  shares  owned by
     Holdings)  will be  converted  into  either:  (i) one  share  of  surviving
     corporation  common  stock,  (ii)  cash  equal  to  $12.75,  subject  to an
     aggregate  $16.6  million cash limit,  or (iii) a  combination  of cash and
     shares;  (d)  Holdings'  name will be  changed to  "LabOne,  Inc.," (e) the
     officers  of Holdings  will be replaced by the current  officers of LabOne,
     (f)  Holdings  directors  will be replaced  by nine of the  current  LabOne
     directors  and  three  additional  non-management  directors,  and  (g) the
     Articles of Incorporation and Bylaws of Holdings will be amended to read as
     set forth in Appendix B and Appendix C to the merger agreement.

2.   A  proposal  to  amend  Paragraph  B.4  of  Article  X of the  Articles  of
     Incorporation  to change the  definition of the term  "Continuing  Director
     Quorum" from nine  Continuing  Directors to  two-thirds  of the  Continuing
     Directors;

3.   A proposal  to elect two Class B  directors,  to serve until the earlier of
     the 2002  Annual  Meeting  of  Stockholders  or the  effective  time of the
     merger.

4.   A  proposal  to ratify  the  selection  of KPMG LLP as  independent  public
     accountants for Holdings for 1999.

     5. Such other  business as may properly  come before the annual  meeting or
any adjournment or postponement thereof.

     These  proposals and related  matters are described more fully in the Joint
Proxy  Statement/Prospectus  that  accompanies this notice. A copy of the merger
agreement, together with copies of the proposed Amended and Restated Articles of
Incorporation  and Bylaws and  provisions  relating to the rights of  dissenting
stockholders are attached to the Joint Proxy Statement/Prospectus.

     Holdings has  established  the close of business on  ________,  1999 as the
record date to  determine  the  stockholders  entitled  to vote at the  Holdings
annual meeting or any postponement or adjournment thereof.
<PAGE>
     The Board of Directors of Holdings unanimously recommends that you vote FOR
adoption of the merger  agreement and FOR approval of the proposed  amendment to
the Articles of Incorporation. It also recommends that you vote FOR the election
of each nominee to the Board of Directors and FOR the approval and  ratification
of Holdings' independent public accountants for the 1999 fiscal year.

          YOUR VOTE IS  IMPORTANT  AND WE URGE YOU TO COMPLETE,  SIGN,  DATE AND
     RETURN YOUR PROXY CARD AS PROMPTLY AS  POSSIBLE,  WHETHER OR NOT YOU EXPECT
     TO ATTEND THE HOLDINGS MEETING. If you are unable to attend in person, your
     shares will be voted at the meeting if you return your proxy card. A return
     envelope  is  enclosed  for your  convenience.  If your  shares are held in
     "street  name" by your broker or other  nominee,  only that holder can vote
     your shares.  You should follow the  directions  provided by them regarding
     how to instruct them to vote your shares.

     You may revoke your proxy at any time by following the procedures set forth
in the accompanying Joint Proxy Statement/Prospectus.

                                            By Order of the Board of Directors

                                            ------------------------------
                                            Steven K. Fitzwater
                                            Secretary
Shawnee Mission, Kansas
                   , 1999


<PAGE>
                                  LABONE, INC.
                             10101 Renner Boulevard
                              Lenexa, Kansas 66219
                                 (913) 888-1770

                NOTICE OF THE 1999 ANNUAL MEETING OF STOCKHOLDERS
                             To be held July , 1999
To the Stockholders of LabOne, Inc.:

         The Annual Meeting of Stockholders  (the "Meeting") of LabOne,  Inc., a
Delaware corporation ("LabOne"),  will be held at the offices of LabOne at 10101
Renner Road, Lenexa, Kansas 66219 on ___________________,  1999, at ______ a.m.,
local time, to consider and vote upon:

1.   A  proposal  to adopt the  Agreement  and Plan of Merger,  as  amended  and
     restated,  by and between Lab Holdings,  Inc. and LabOne, Inc., dated as of
     March 7, 1999 (the  "merger  agreement"),  which is described in this Joint
     Proxy  Statement/Prospectus,  and the  transactions  contemplated  thereby.
     Pursuant to the merger agreement,  (a) shares of Lab Holdings,  Inc. common
     stock will be split 1.5 for one immediately prior to the merger, (b) LabOne
     will  merge  with and into  Holdings,  with  Holdings  being the  surviving
     corporation,  (c) each outstanding share of LabOne Common Stock (other than
     shares owned by Holdings) will be converted  into either:  (i) one share of
     surviving  corporation common stock, (ii) cash equal to $12.75,  subject to
     an aggregate  $16.6 million cash limit,  or (iii) a combination of cash and
     shares;  (d)  Holdings'  name will be  changed to  "LabOne,  Inc.," (e) the
     officers  of Holdings  will be replaced by the current  officers of LabOne,
     (f)  Holdings  directors  will be replaced  by nine of the  current  LabOne
     directors  and three  additional  non-  management  directors,  and (g) the
     Articles of Incorporation and Bylaws of Holdings will be amended to read as
     set forth in Appendix B and Appendix C to the merger agreement.

2.   A  proposal  to  elect  twelve  directors  of  LabOne  as set  forth in the
     accompanying Joint Proxy Statement/Prospectus, to serve until the effective
     time of the  merger,  or if the merger is not  consummated,  until the 2000
     Annual Meeting of Stockholders.

3.   A  proposal  to ratify  the  selection  of KPMG LLP as  independent  public
     accountants for LabOne and its subsidiaries for the 1999 fiscal year.

4.   Such other business as may properly come before the Meeting.

     These  proposals and other related  matters are more fully described in the
accompanying Joint Proxy Statement/Prospectus. A copy of the merger agreement is
attached to the Joint Proxy Statement/Prospectus as Appendix A.

     Only  holders of record of common  stock of LabOne at the close of business
on _________, 1999 are entitled to notice of and to vote at the Meeting.

     The Board of  Directors of LabOne and a Special  Committee  of  independent
LabOne directors have approved the merger  agreement,  declared its advisability
and  recommend  that you vote FOR  adoption  of the  merger  agreement.  It also
recommends  that you vote  FOR the  election  of each  nominee  to the  Board of
Directors and FOR the approval and ratification of LabOne's  independent  public
accountants for the 1999 fiscal year.
<PAGE>

     YOUR VOTE IS IMPORTANT. PLEASE DATE, SIGN AND RETURN THE ACCOMPANYING PROXY
PROMPTLY IN THE  ENCLOSED  ENVELOPE,  WHETHER OR NOT YOU INTEND TO BE PRESENT AT
THE MEETING.  Sending in your Proxy now will not  interfere  with your rights to
attend the meeting or to vote your shares  personally at the meeting if you wish
to do so.  If your  shares  are held in  "street  name" by your  broker or other
nominee, only that holder can vote your shares. You should follow the directions
provided by them regarding how to instruct them to vote your shares.

      LabOne  stockholders  who wish to  receive  cash  for any of their  LabOne
shares  should  complete  and return the Form of Election  attached to the Proxy
Statement/Prospectus,  together with stock  certificates or a completed guaranty
of delivery.  Elections must be made prior to 10:00 a.m. Kansas City time on the
day of the  Meeting  and may be  revoked  only by giving  written  notice to the
Disbursing Agent prior to that time.

     You may revoke your proxy with respect to any proposal at any time prior to
the  completion of the voting on such proposal at the Meeting,  by following the
procedures set forth in the accompanying Joint Proxy Statement/Prospectus.

                                             By Order of the Board of Directors

                                             Gregg R. Sadler, Secretary
Lenexa, Kansas, __________________, 1999


<PAGE>
                                TABLE OF CONTENTS
                                                Page
QUESTIONS AND ANSWERS ABOUT
THE MERGER....................................    1
WHO CAN HELP ANSWER QUESTIONS.................    3
SUMMARY.......................................    4
      The Companies...........................    4
      The Merger..............................    4
      Voting  ................................    5
      Our Recommendations to Our
         Stockholders.........................    6
      The Merger Agreement....................    6
      Other Information.......................    7
SUMMARY FINANCIAL INFORMATION.................    8
      Holdings' Historical Consolidated
         Financial Information................    8
      LabOne Historical Financial
         Information..........................    9
      Summary Unaudited Pro Forma
         Financial Information................   10
COMPARATIVE PER SHARE
       INFORMATION............................   11
      Comparative Per Share Data..............   11
      Comparative Market Price and Dividend
         Information..........................   12
RISK FACTORS..................................   13
      Risk Factors............................   13
      Forward Looking Statements..............   18
LABONE GROWTH STRATEGY........................   19
THE PROPOSED MERGER...........................   22
      General.................................   22
         Holdings Annual Meeting..............   22
         LabOne Annual Meeting................   22
      The Holdings Stock Split ...............   22
      Exchange of LabOne Shares and Cash
         Elections............................   23
      Stock Options and Warrants..............   23
      Background of the Merger................   24
      Holdings' Reasons for the Merger and
         Recommendation of its Board..........   29
      LabOne's Reasons for the Merger and
         Recommendation of its Board..........   31
      Opinion of Holdings' Financial Advisor..   34
      Opinion of Financial Advisor to the
         LabOne Special Committee.............   39
      Accounting Treatment....................   45
      Certain Federal Income Tax
         Consequences.........................   45
         General..............................   45
         Holdings Stockholders................   46
         LabOne Stockholders (Other than
              Holdings).......................   47
         Holdings.............................   48
         LabOne...............................   48
      Interests of Certain Persons in the Merger 48
      Dissenter's Rights......................   50
      Amendments to Holdings' Articles
          of Incorporation and Bylaws.........   51
<PAGE>

                                                Page
         Articles of Incorporation............   51
         Bylaws...............................   52
         Certain Possible Anti-takeover Effects
              of the Amendments to the Articles
              of Incorporation and Bylaws of the
         Combined Company.....................   53
      Resales of Common Stock.................   54
THE MERGER AGREEMENT..........................   55
      General   ..............................   55
      Pre-Merger Stock Split..................   55
      Closing of the Merger; Effective Time
         of the Merger........................   55
      Effect of Merger........................   56
      Conversion of LabOne Common Stock
         into Shares of the Combined
         Company or Cash......................   56
      Effect of Merger on Holdings Common
         Stock  ..............................   58
      Effect of Merger on Options and Warrants   59
      Dissenters' Rights......................   59
      Conditions to the Merger................   59
      Representations and Warranties..........   61
      Certain Covenants; Conduct of Business..   62
      Amendment of Articles of Incorporation     63
      Additional Agreements...................   63
      Expenses  ..............................   64
      Indemnification.........................   64
      Amendment, Waiver and Termination.......   65
MEETINGS OF STOCKHOLDERS......................   66
      Holdings Annual Meeting.................   66
      LabOne Annual Meeting...................   67
UNAUDITED PRO FORMA CONDENSED
       FINANCIAL STATEMENTS...................   71
INFORMATION REGARDING LABONE..................   76
      Business  ..............................   76
         General..............................   76
         Insurance Services...................   76
         Clinical Services....................   77
         Substance Abuse Testing Services.....   78
         Segment Information..................   78
         Operations...........................   78
         Regulatory Affairs...................   79
         Sales and Marketing..................   79
         Competition..........................   80
         Foreign Markets......................   81
         Technology Development...............   81
         Employees............................   81
      Properties..............................   81
      Litigation..............................   82
LABONE  MANAGEMENT'S DISCUSSION
      AND ANALYSIS OF FINANCIAL
      CONDITION AND RESULTS OF
      OPERATIONS..............................   82
MANAGEMENT OF LABONE..........................   87
      Labone Executive Compensation...........   90
MANAGEMENT OF COMBINED
                                      i
<PAGE>
                                                Page
         COMPANY AFTER THE MERGER.............   96
SECURITY OWNERSHIP OF LABONE
       BEFORE AND AFTER THE MERGER               97
LABONE'S ANNUAL MEETING
      PROPOSALS...............................   99
      Election of Directors
         Of Labone............................   99
      Ratification of Selection of
         Independent Public
         Accountants of Labone................  101
DESCRIPTION OF COMBINED COMPANY
      CAPITAL STOCK ..........................  101
      Certain Provisions of Articles of
         Incorporation and Bylaws of Combined
         Company that May Have an
         Anti-takeover Effect.................  102
COMPARATIVE RIGHTS OF
      LABONE STOCKHOLDERS.....................  104
      Certain Differences between LabOne's
         and the Combined Company's
         Charter and Bylaws...................  105
      Certain Differences Between Missouri
         and Delaware Corporation Statutes....  107
COMPARATIVE RIGHTS OF
      HOLDINGS STOCKHOLDERS...................  109
MANAGEMENT OF HOLDINGS........................  110
      Directors and Officers..................  110
      Committees of the Holdings' Board of
         Directors............................  111
      Compensation of Directors...............  111
      Compensation of Executive Officers......  113
      Report of the Compensation
         Committee on Executive
         Compensation.........................  114
      Performance of Holdings' Common
         Stock................................  115
      Security Ownership of Holdings
         Management...........................  117
      Security Ownership of Certain Other
         Beneficial Owners of Holdings
         Common Stock.........................  118
      Certain Relationships and
         Related Transactions.................  119
HOLDINGS' ANNUAL MEETING
      PROPOSALS...............................  120
      Proposal to Amend Articles
         Of Incorporation.....................  120
      Proposal to Elect Two
         Holdings Directors...................  121
      Proposal to Approve and Ratify
         Holdings' Appointment of
         Independent Public
         Accountants..........................  123
<PAGE>
                                               Page
EXPERTS         ..............................  123
LEGAL MATTERS.................................  123
FUTURE STOCKHOLDER PROPOSALS..................  123
WHERE YOU CAN FIND MORE
      INFORMATION.............................  124
INDEX TO LABONE  FINANCIAL
       STATEMENTS ............................  F-1
LIST OF APPENDICES
      Appendix A    Merger Agreement
         Exhibit B  Form of Amended and Restated
                    Articles of Incorporation
         Exhibit C  Form of Amended and Restated
                    Bylaws
      Appendix B    Opinion of Salomon Smith
                    Barney Inc.
      Appendix C    Opinion of U.S. Bancorp
                    Piper Jaffray Inc.
      Appendix D    Section 351.455, RSMo Concerning
                    Dissenters' Rights

                                       ii

<PAGE>
                              QUESTIONS AND ANSWERS
                                ABOUT THE MERGER

Q:   Why are the two companies proposing to merge?

A:   We believe the proposed  merger is in the best  interests of both companies
     and their  respective  stockholders.  The merger is  designed to create the
     potential  for  long-term  growth  in  stockholder  value  of the  combined
     company,  primarily through  acquisitions and the continued  development of
     other strategic relationships. Under the present holding company structure,
     the need of Holdings to maintain a greater than 80%  ownership of LabOne to
     qualify for  consolidated  tax reporting  inhibits the ability of LabOne to
     use its common stock for  acquisitions  and the building of other strategic
     relationships. Pooling of interests accounting that is a key requirement in
     many acquisitions is also not available to LabOne as an acquiror because it
     is a subsidiary.

     The merger will also allow Holdings stockholders to enjoy the benefits of a
direct investment in the business of LabOne and its management while eliminating
duplicate holding company  management and  administrative  costs. We believe the
merger will eliminate about $1 million per year of management and administrative
costs.

         We also  believe  that the  merger  should  result  in  higher  trading
      volumes, greater liquidity, a more efficient market and increased investor
      interest in the common stock of the combined company.

         You should review the reasons for the merger in greater detail at pages
      29 through 34.

Q:    What are some of the disadvantages of the
      proposed merger?

A:   For accounting purposes, the annual net income of the combined company will
     be reduced by the amortization of the goodwill created by the merger at the
     rate of about $1.1 to $1.3 million per year for 20 years,  depending on the
     extent of cash  elections.  Holdings  currently  has about $6.3  million of
     historical  goodwill  that will also reduce  earnings  attributable  to all
     combined  company  shares,   including  those  shares  received  by  LabOne
     stockholders  in the merger,  at the annual rate of about $1.5  million per
     year until April 2003.  The  combined  company will also need to borrow the
     funds  necessary  to pay the cash  portion of the merger  consideration  in
     excess of $3 million,  which will increase the combined company's financial
     leverage and interest  expense.  Capital needed to pursue a growth strategy
     and the  additional  leverage  may also  result  in a  possible  change  in
     dividend policy at some time in the future. Also, LabOne's strategy to grow
     by acquisition and strategic alliances may not be successful.

     After  taking into  account  these  disadvantages,  we believe that the
     advantages of the merger outweigh the disadvantages.

Q:    When and Where are the Annual Meetings?

A:    Both the LabOne and Holdings  annual  meetings are scheduled to take place
      on ________,  1999.  The LabOne meeting will take place at __:__ _m, local
      time,  at the new LabOne  laboratory  and  offices at 10101  Renner  Blvd,
      Lenexa,  Kansas 66219.  The Holdings  meeting will take place at __:__ _m,
      local time, at ____________.
<PAGE>

Q:   When do you expect the merger to be completed?

A:   We expect to  complete  the merger  promptly  after  receiving  stockholder
     approvals at the annual meetings.

Q:    What do I need to do now?

A:    You should  carefully read and consider the information  contained in this
      document.  Then,  please  fill out,  sign and mail your  proxy card in the
      enclosed  return  envelope  as soon as possible so that your shares may be
      represented at the annual  meeting.  If the card does not specify a choice
      it will be voted "FOR" the merger and all other proposals.

         If you are a LabOne  stockholder  and you wish to exchange  any of your
      LabOne  stock for cash,  you should  properly  complete  and return to the
      Disbursing Agent the attached  Election Form with your stock  certificates
      or a guaranty of delivery so that it is received before the LabOne meeting
      on _______, 1999.

Q:    What if I don't Vote or I Abstain From Voting

A:    If you are a Holdings stockholder and you do not
      vote or you abstain, the effect will be a vote against
      the merger .

      If you are a LabOne Unaffiliated Stockholder:

                                        1

<PAGE>
      only  votes "for" or "against" the merger will affect
      the result.

Q:   If my shares are held by my broker in "street name," will my broker vote my
     shares for me?

A:   Your broker will vote your shares only if you provide  instructions  on how
     to vote. You should follow the  directions  provided by your broker to vote
     your shares.

Q:   How will I be able to  elect to  receive  cash for all or a  portion  of my
     LabOne shares?

A:   We are delivering  with this document the election  forms and  instructions
     you will need for making a cash election.

Q:   May I change my vote after I have mailed my signed proxy card?

A:   Yes. You may change your vote at any time before your proxy is voted at the
     annual meeting. You can do this in one of three ways. First, you can send a
     written  notice  stating that you would like to revoke your proxy.  Second,
     you can complete and submit a new proxy card. If you choose either of these
     two methods,  you must submit your notice of  revocation  or your new proxy
     card to  Holdings  at 5000 West 95th  Street,  Suite  260,  P.O.  Box 7568,
     Shawnee  Mission,  Kansas 66207, if you are a Holdings  stockholder,  or to
     LabOne at 10101 Renner Blvd., Lenexa, Kansas 66219,  Attention:  Secretary,
     if you are a LabOne stockholder.  Third, you can attend the Holdings annual
     meeting or the LabOne annual meeting and vote in person.  Simply  attending
     the meeting, however, will not revoke your proxy; you must request a ballot
     and vote the ballot at the meeting. If you have instructed a broker to vote
     your shares, you must follow directions received from your broker to change
     your vote.

Q:   Can I revoke a cash election?

          Yes,  at any time before the start of the LabOne  meeting.  You may do
     this by  sending  a  written  notice  of  revocation  to  _____________  at
     __________________ so that it is received before the meeting.

Q:   Should I send in my stock certificate now?

A:   If you are a LabOne stockholder and wish to receive cash for some or all of
     your shares,  you should  follow the  instructions  in the Form of Election
     included with this document.  You will need to submit a properly  completed
     Form of Election  together with certificates for your shares (or a guaranty
     of delivery) to the  disbursing  agent  referred to therein.  If you do not
     want to  receive  any cash  for your  shares,  you may keep  your  existing
     certificates.  They  will be  deemed to  represent  shares of the  combined
     company  after the  merger.  We will  send  instructions  after the  merger
     explaining  how you may  exchange  your  old  LabOne  certificates  for new
     certificates evidencing shares of the combined company.

         If  you  are  a  Holdings  stockholder,  you  may  keep  your  existing
      certificates,  but  you  will  also  receive  instructions  on how you may
      exchange them for new certificates bearing the name "LabOne, Inc." and the
      new par value of $0.01 per share.  You will also be sent a new certificate
      for the additional  shares that will result from the split of each of your
      existing shares into 1.5 shares.
<PAGE>

Q:       What happens to my future dividends?

A:   LabOne pays a regular  quarterly  dividend of $0.18 per share on its common
     stock. Holdings pays a regular quarterly dividend of $0.30 per share on its
     common  stock before  adjustment  for the proposed 1.5 for one stock split.
     Payments of dividends by the combined  company in the future will depend on
     the business,  financial condition,  earnings and other factors,  including
     the implementation of the combined  company's future  acquisition  strategy
     and/or the additional leverage that will be incurred to finance the merger.
     Any  determination  will  be  made by the new  board  of  directors  of the
     combined company following the merger.

                                        2





                        WHO CAN HELP ANSWER MY QUESTIONS?
        If you have more questions about the merger, you should contact:

        Lab Holdings Stockholders:
         ========================
         ========================
         (---) --------

           or you may also call:

         Steven K. Fitzwater
              Executive Vice President,
              Chief Operating and Financial
              Officer and Secretary
         Lab Holdings, Inc.
         5000 West 95th Street, Suite 260
         Shawnee Mission, Kansas 66207
         (913) 648-3600

        LabOne Stockholders:
         ========================
         ========================
         ------------------------
         (---) --------

         or you may also call:

         Robert D. Thompson
              Executive Vice President and
              Chief Operating and Financial
              Officer
         LabOne, Inc.
         10101 Renner Blvd.
         Lenexa, Kansas 66219
         (913) 888-1770

                                        3

<PAGE>

                                     SUMMARY

      This summary,  together with the preceding  Questions and Answers section,
highlights  selected  information  from this document and may not contain all of
the  information  that is important to you. To better  understand the merger and
related  transactions and for a more complete  description of the legal terms of
the merger and  related  transactions,  you should  read  carefully  this entire
document and the documents we have referred you to. See "Where You Can Find More
Information"   on  page  124.  Also,  we  use  the  term  "LabOne   Unaffiliated
Stockholders" throughout this document. That means all LabOne stockholders other
than Holdings,  officers and directors of Holdings and beneficial  owners of 10%
or more of the outstanding shares of Holdings common stock.

                The Companies

              Lab Holdings, Inc.

         Principal Executive Office:
         5000 West 95th Street
         Suite 260, P.O. Box 7568
         Shawnee Mission, Kansas 66207
         (913) 648-3600

Holdings' assets primarily  consist of 10,712,200  shares of the common stock of
LabOne (about 80.5% of the outstanding stock) and about $5.9 million of cash and
other assets.  Formerly known as Seafield Capital Corporation,  Holdings and its
small staff is presently  engaged in the business of managing its  investment in
LabOne.  Previously,  Holdings owned interests in a variety of other enterprises
including  those  engaged in insurance  (BMA  Insurance),  healthcare  (Response
Oncology), energy (Syntroleum), real estate (Scout Development) and a variety of
other venture capital investments, all of which have since been disposed of.

                LabOne, Inc.

         Principal Executive Office:
         10101 Renner Blvd.
         Lenexa, Kansas 66219
         (913) 888-1770
         Internet address: www.LabOne.com

LabOne is the largest provider of risk assessment laboratory testing services to
the life  insurance  industry in the United  States and Canada.  It is a growing
provider of clinical testing services for the healthcare  industry and substance
abuse testing services for employers. These services were recently expanded as a
part of the LabOne  diversification  strategy in late 1998 to include  insurance
claims  investigation  services  through the acquisition of Systematic  Business
Services,  Inc.  Services  are  primarily  delivered  from a newly  constructed,
centrally  located,  state-of-the  art 268,000 square foot laboratory and office
complex in the Kansas City metro area.
<PAGE>

                                The Merger

What Holdings Stockholders will retain in the
Merger (See pages 22 and 25)

Immediately  before the merger,  Holdings  stockholders  will receive in a stock
split one  additional  share of Holdings for each two Holdings  shares that they
own at that time.  After the merger,  the shares  received in the stock split as
well as the  shares  held at the  time  of the  stock  split  will  continue  to
represent  the same number of shares of the combined  company.  In the aggregate
these will constitute  approximately 78.9% of the combined company if all LabOne
Stockholders  other than Holdings elect to receive only stock in the merger.  If
all LabOne  Stockholders  other than Holdings elect to exchange at least half of
their shares for cash, then the Holdings  stockholders will own in the aggregate
approximately 88.2% of the combined company after the merger.

What LabOne Stockholders will receive in the
Merger (See pages 23 and 56)

Each LabOne  stockholder,  other than  Holdings,  will  receive one share of the
combined  company  for each  share  of  LabOne  held at the time of the  merger.
However,  LabOne  stockholders  may instead elect to receive  $12.75 in cash per
share  for all or a  portion  of their  existing  LabOne  shares  so long as the
aggregate cash elections of all LabOne  stockholders do not exceed $16.6 million
(approximately  50% of eligible  shares).  If the cash  elections  exceed  $16.6
million,  then the cash will be  allocated  on a pro rata  basis  among the cash
election shares.  After the merger the LabOne  stockholders will own about 21.1%
of the  combined  company if none elect cash and about  11.8% if cash  elections
equal or exceed the $16.6 million cash limit.

Certain Federal Tax Consequences (See pages
45 through 48)

      The merger has been structured by Holdings and
LabOne so that no gain or loss should be recognized for

                                        4

federal  income tax  purposes by LabOne  stockholders  who elect to receive only
common  stock of the  combined  company.  Those  who  receive  cash and stock in
exchange for their shares will recognize  gain, but not loss,  equal in the case
of  each  stockholder  to the  lesser  of (x) the  total  gain  realized  by the
stockholder  on the  exchange  after  taking  into  account the value of all the
merger  consideration  received  by such  stockholder  or (y) the amount of cash
received.  Those who receive  solely cash in exchange  for their shares may also
recognize gain. The gain that is recognized by a LabOne stockholder who receives
cash in the exchange may be capital  gain or ordinary  income,  depending on the
stockholder's individual circumstances. Generally, the gain will be capital gain
if  the   percentage  of  combined   company  common  stock  owned  directly  or
constructively by the stockholder after the merger is at least 20% less than the
percentage  that  would  have  been  owned  directly  or  constructively  by the
stockholder if all LabOne shares had been exchanged for combined  company common
stock. Otherwise, the gain recognized likely will be treated as ordinary income.
LabOne  stockholders  should  consult  with their tax  advisor  regarding  their
election rights in the merger.
<PAGE>

      Holdings stockholders should not recognize gain or loss for federal income
tax  purposes in  connection  with the stock split or the merger,  except to the
extent of cash received in payment of any fractional  share that may result from
the stock split or from cash received due to the exercise of dissenters' rights.

Directors and Management Following the Merger
(See Pages 96 through 97)

      Upon  completion  of the merger,  the board of  directors  of the combined
company will  consist of nine  present  LabOne  directors  and three  additional
independent  non-management  directors nominated by the LabOne Special Committee
and approved by Holdings.  None of the present Holdings  directors will continue
in office.

      W.T Grant II, the current Chairman,  President and Chief Executive Officer
of LabOne,  will be the Chairman,  President and Chief Executive  Officer of the
combined company.  The other present officers of LabOne will also continue to be
officers of the  combined  company.  None of the present  Holdings  officers and
employees will continue in office following the merger.

Amendments  to  Holdings  Articles  of  Incorporation  and Bylaws  (See Pages 51
through 53 and Exhibit B and C to the merger  agreement which are marked to show
proposed changes from Holdings existing documents)

      In the  merger  the  following  principal  changes  will  be  made  to the
Holdings' Articles of Incorporation and Bylaws:

      o  Holdings' name will be changed to "LabOne,
         Inc."

      o  The authorized  shares of common stock will be increased to reflect the
         number currently authorized by the LabOne Certificate of Incorporation.

     o   The par value of  capital  stock  will be reduced to $0.01 per share to
         reflect the current par value of LabOne shares.

     o   An 80% vote of stockholders will be required for certain  amendments to
         the Articles of Incorporation and Bylaws.

     o   Advance notice will be required for stockholder
         proposals or nominations for director.

     o   A provision authorizing four-fifths (4/5) of outstanding shares to call
         a special meeting of stockholders will be eliminated.
<PAGE>

                                  Voting

Matters to be Voted On (See Pages 66 and 67)

     At the Holdings meeting,  Holdings  stockholders will be asked to adopt the
merger agreement and a related  amendment to Article X of the Holdings  Articles
of  Incorporation.  Stockholders  will also be asked to vote on the  election of
directors  to serve in the event the  merger is not  effected  and to ratify the
annual appointment of independent public accountants.

     At the  LabOne  meeting,  LabOne  stockholders  together  with  all  LabOne
Unaffiliated Stockholders voting as a separate class, will be asked to adopt the
merger  agreement.  Stockholders  will also be asked to vote on the  election of
directors  to serve in the event the  merger is not  effected  and to ratify the
annual appointment of independent public accountants.

Votes Required (See page 68)

     The affirmative vote of the holders of two-thirds of the outstanding shares
of common stock of Holdings,  a majority of the outstanding shares of LabOne and
a
                                        5

majority of the votes cast for or against the merger by the LabOne  Unaffiliated
Stockholders  is required to approve the  merger.  The  affirmative  vote of the
holders of a majority of the  outstanding  shares of common stock of Holdings is
required  to approve  the  amendment  to Article X of the  Holdings  Articles of
Incorporation. The merger is conditioned on the approval of that amendment.

Record Date (See page 69)

     The  record  date for each  annual  meeting  is the  close of  business  on
_____________, 1999.

                               Our Recommendations
                               to Our Stockholders

Holdings (See page 120)

     The  Holdings  Board  believes  that the merger  and  related  matters  and
transactions are advisable and fair to and in the best interests of Holdings and
the Holdings  stockholders.  Accordingly,  it has unanimously  approved them and
unanimously  recommends that Holdings  stockholders vote FOR the proposed merger
and related amendment to Article X of the Articles of Incorporation.

 LabOne (See page 101)

     The LabOne Board has  determined  that the merger is fair and  advisable to
and in the best interests of LabOne and the LabOne  stockholders,  and a Special
Committee  of the  LabOne  Board  has  determined  that the  merger  is fair and
advisable  to and in the best  interest  of LabOne and the  LabOne  Unaffiliated
Stockholders.  Accordingly, they recommend that the LabOne stockholders vote FOR
the proposed merger.
<PAGE>
     The Special  Committee  is a committee of  independent  directors of LabOne
that was  established  to represent  the  interests  of the LabOne  Unaffiliated
Stockholders and to negotiate the terms of the merger. It consists of Richard S.
Schweiker (Chairman), Richard A. Rifkind, M.D., Joseph H. Brewer, M.D., and John
E. Walker. The Special Committee is represented by independent legal counsel and
an independent financial advisor.

Opinion of Financial Advisor to Holdings (See
pages 34 through 39)

     In connection  with the merger,  the Holdings  Board received an opinion of
Salomon Smith Barney Inc. as to the fairness, from a financial point of view, of
the merger  consideration  to Holdings.  The full text of the written opinion of
Salomon  Smith Barney Inc.  dated March 7, 1999 is attached to this  document as
Appendix B and should be read carefully in its entirety.  The opinion of Salomon
Smith  Barney Inc. is directed to the Holdings  Board and does not  constitute a
recommendation  to any  stockholder  with respect to any matter  relating to the
proposed merger.

Opinion of Financial Advisor to the Special
Committee (See pages 39 through 45)

     In connection with the merger, the Special Committee received an opinion of
U.S.  Bancorp Piper Jaffray as to the fairness,  from a financial point of view,
of the merger  consideration to the LabOne Unaffiliated  Stockholders.  The full
text of the written opinion of U.S. Bancorp Piper Jaffray dated March 7, 1999 is
attached  to this  document as  Appendix C and should be read  carefully  in its
entirety.  The opinion of U.S.  Bancorp Piper Jaffray is directed to the Special
Committee  and does not  constitute a  recommendation  to any  stockholder  with
respect to any matter relating to the proposed merger.

                              The Merger Agreement

     The  merger  agreement  is  attached  as  Appendix A to this  document.  We
encourage  you to read the merger  agreement  as it is the legal  document  that
governs the merger.

Conditions to the Merger (See pages 59 through
61)

     The completion of the merger depends upon the  satisfaction  of a number of
conditions, including the following:

     o   approval  of the  proposed  amendment  to  Article  X of  the  Holdings
         Articles  of  Incorporation  to change the  definition  of  "Continuing
         Director  Quorum" from nine  Continuing  Directors to two-thirds of the
         Continuing Directors;

     o    approval by the Holdings stockholders,  the LabOne stockholders, and a
          majority of the votes cast by the LabOne Unaffiliated Stockholders;

     o    Holdings will have  obtained the  financing  necessary to satisfy cash
          elections;

     o   the continued accuracy of each company's representations and warranties
         and  compliance  by each company with its  agreements  contained in the
         merger agreement;
                                        6

<PAGE>
     o    receipt  of a  legal  opinion  from  Holdings'  counsel  as to the tax
          consequences of the merger;

     o    the holders of not more than 5% of the Holdings  common stock exercise
          dissenters' rights;

     o    the stock split of Holdings shares shall have become effective;

     o   the opinions of the  financial  advisors to the  Holdings  Board or the
         Special Committee shall not have been materially modified in an adverse
         manner or withdrawn prior to the date of mailing of the proxy statement
         or related supplement; and

     o   the merger will not trigger the  vesting of  outstanding  LabOne  stock
         options or warrants.

Termination of the Merger Agreement and
Expenses  (See pages 64 through 65)

     Holdings and LabOne can agree to  terminate  the merger  agreement  without
completing the merger,  and either company can terminate the merger agreement on
its own without completing the merger under various circumstances,  including if
any of the following occurs:

     o    the merger is not  completed by October 31, 1999,  other than due to a
          breach of the merger agreement by the terminating party;

     o    the  stockholders  of  either  company  or  the  LabOne   Unaffiliated
          Stockholders do not approve the merger agreement;

     o    the stockholders of Holdings do not approve the amendment to Article X
          of the Holdings Articles of Incorporation;

     o   the Board of Directors of either company determines that termination is
         required due to the terms of an acquisition proposal made by some other
         person;

     o   the financial advisor of the party withdraws or materially  modifies in
         an adverse manner its fairness  opinion prior to the date of mailing of
         this proxy statement or related supplement;

     o   the Board of  Directors  of the  other  party to the  merger  agreement
         withdraws,  modifies or changes its  recommendation  of the merger in a
         manner adverse to the other party;

     o    a court or other  governmental  authority  permanently  prohibits  the
          merger, or

     o   a material  inaccuracy in any  representation or warranty or a material
         failure to comply with any  agreements or  conditions  contained in the
         merger  agreement  that is not cured within 30 days  following  written
         notice of the inaccuracy or failure to comply.

     In the event of a termination of the merger due to a material breach by the
other  party  or due to the  other  party's  termination  due to an  acquisition
proposal by a third party,  then the breaching or terminating party will pay the
expenses of the other party  relating to the merger.  Otherwise the parties will
pay their own expenses relating to the merger,  except that immediately prior to
the merger Holdings has agreed to reimburse LabOne for its merger expenses.
<PAGE>

                                Other Information

Accounting Treatment (See page 45)

     The merger will be accounted for as an  acquisition  of minority  interests
using  the  purchase  method  of  accounting.  For  purposes  of  preparing  its
consolidated  financial  statements,  Holdings will determine the fair values of
LabOne's  assets and  liabilities,  and will  record as  goodwill  the excess of
consideration  paid, plus costs of the merger, over the fair value of net assets
acquired.  The  goodwill  created by the merger will be expensed  over a 20 year
period.

Dissenters' Rights (See page 50)

     Under Delaware law,  stockholders of LabOne have no dissenters' rights with
respect to the merger. Under Missouri law, Holdings stockholders who do not vote
in favor of the merger agreement and who follow certain procedures will have the
right to dissent and obtain payment in cash of the fair value of their shares of
Holdings  common stock as of the day prior to the Holdings  annual  meeting.  In
order to exercise dissenters' rights, a stockholder must, among other things:

o    deliver a written objection to Holdings prior to or at
     the Annual Meeting;

o    not vote in favor of the merger agreement; and

o    deliver to the combined  company within twenty (20) days after the merger a
     written  demand  for  payment  of the fair  value of his or her  shares  of
     Holdings common stock.

                                        7

<PAGE>
                          SUMMARY FINANCIAL INFORMATION

     We are  providing the following  financial  information  to aid you in your
analysis of the  financial  aspects of the merger.  This  information  is only a
summary  and you should read it in  conjunction  with the  historical  financial
statements  of  Holdings  and  LabOne  and the  related  notes and  Management's
Discussion and Analysis of Financial Condition and Results of Operations.  These
items for LabOne are contained in the LabOne financial  statements  beginning on
page 9 and on page71 , and for Holdings are  contained in its annual,  quarterly
and other  reports  that  Holdings  has filed with the  Securities  and Exchange
Commission that are  incorporated  herein by reference.  See "Where You Can find
More Information" on page 124.
<PAGE>

             Holdings Historical Consolidated Financial Information

         The historical consolidated financial information for Holdings reflects
the  following  items  which you  should  consider  in  making  period-to-period
comparisons.

     o    All per share information has been adjusted to reflect the 1.5 for one
          stock split which will occur immediately prior to the merger.

     o    In 1997, Holdings distributed, as a dividend to its stockholders,  all
          shares owned by Holdings of its subsidiary, Response Oncology, Inc.

     o    In 1997, Holdings distributed, as a dividend to its stockholders,  all
          of  the  outstanding  shares  of  common  stock  of  its  wholly-owned
          subsidiary,  SLH  Corporation.  In connection with this  distribution,
          Holdings transferred its real estate and energy businesses and certain
          miscellaneous assets to SLH.

     o    LabOne  constructed  a new  facility in 1998 to house its  laboratory,
          administrative and warehouse  functions.  Construction of the facility
          was financed through $20 million in industrial revenue bonds and cash.

                                           Year Ended December 31,             
                                     -----------------------------------------
                                     1998     1997     1996      1995     1994
                                     ----     ----     ----      ----     ----
                                   (in thousands, except for per share data)
Statement of Operations Data:
Sales                            $ 102,227   78,926   61,878    75,246   86,027
Cost of sales                       56,720   42,017   35,488    46,059   51,489
Selling, general and 
 administrative expenses            33,550   34,765   29,767    36,702   36,199
Earnings (loss) from continuing
 operations                          5,148   (7,855)  (4,226)   (1,826)    (276)
Basic earnings (loss) per share 
 from continuing operations            .53     (.81)    (.43)     (.19)    (.02)
Diluted earnings (loss) per share
 from continuing operations            .52     (.81)    (.43)     (.19)    (.02)


                                              As of December 31,      
                                   -------------------------------------------
                                     1998     1997     1996      1995     1994
                                     ----     ----     ----      ----     ----
                                     (in thousands, except for per share data)
Balance Sheet Data:
Total assets                     $  98,643   74,786  196,783   198,018  234,196
Long-term debt                      18,097     --       --       --           8
Stockholders' equity                55,058   56,687  174,024   187,084  200,933
Cash dividends declared
  per common share                     .80      .80      .80       .80      .80








                                        8
<PAGE>

              LabOne Historical Consolidated Financial Information

         The historical  consolidated  financial information for LabOne reflects
the  following  items  which you  should  consider  in  making  period-to-period
comparisons:

         o  LabOne  constructed a new facility in 1998 to house its  laboratory,
            administrative and warehouse functions. Construction of the facility
            was financed  through $20 million in  industrial  revenue  bonds and
            cash.

                                           Year Ended December 31,             
                                     -----------------------------------------
                                     1998     1997     1996      1995     1994
                                     ----     ----     ----      ----     ----
                                   (in thousands, except for per share data)

Statement of Operations Data:
Sales                           $ 102,227    78,926   59,432   57,029   60,726
Cost of sales                      56,720    42,017   32,717   29,934   29,073
Selling, general and 
  administrative expenses          31,028    27,707   23,623   24,908   24,821
Net earnings                        9,219     2,202    2,868    2,797    5,687
Basic earnings per share              .70       .17      .22      .21      .43
Diluted earnings per share            .69       .17      .22      .21      .43


                                              As of December 31,               
                                    -------------------------------------------
                                     1998     1997     1996      1995     1994
                                     ----     ----     ----      ----     ----
                                     (in thousands, except for per share data)

Balance Sheet Data:
Total assets                   $   86,781    59,973  64,743    70,048   76,758
Long-term debt                     18,097      --      --        --       --
Stockholders' equity               53,181    51,499  58,449    64,864   71,237
Cash dividends declared 
  per common share                    .72       .72     .72       .72      .72
















                                        9
<PAGE>

                Summary Unaudited Pro Forma Financial Information


         The  following  summary  unaudited  pro  forma  financial   information
presents  (i) summary  unaudited  pro forma  balance  sheet data at December 31,
1998,  giving effect to the merger as if the merger had been consummated on that
date and (ii)  summary  unaudited  pro forma  operating  data for the year ended
December 31, 1998, giving effect to the acquisition of minority  interests as if
the merger had been consummated on January 1, 1998. The merger will be accounted
for as an  acquisition  of  minority  interests  using  the  purchase  method of
accounting.  The following summary unaudited pro forma financial  information is
provided for informational  purposes only and should be read in conjunction with
the separate  audited  consolidated  financial  statements  and related notes of
Holdings  (which are  incorporated  herein by  reference)  and LabOne (which are
included  elsewhere  in this Joint Proxy  Statement/Prospectus).  The  following
summary  information is based on certain  assumptions and does not purport to be
indicative of the results which  actually  would have occurred if the merger had
been  consummated on the dates indicated or which may be obtained in the future.
See  "Unaudited  Pro  Forma  Condensed  Financial  Statements"  on  page  71 and
"Accounting Treatment" on page 45.


                                          Year ended December 31, 1998      
                                 ----------------------------------------------
                                    (in thousands, except for per share data)
                                    Assumes All           Assumes Stock and
                                  Stock Elections       Maximum Cash Elections
                                  ---------------       ----------------------  
Statement of Operations Data:
Sales                             $     102,227                 102,227
Cost of sales                            56,720                  56,720
Selling, general and 
  administrative expenses                33,661                  33,793
Net earnings                              6,416                   5,745
Basic earnings per share                    .52                     .52
Diluted earnings per share                  .51                     .51


                                              As of December 31, 1998        
                                 ----------------------------------------------
                                                (in thousands)
                                    Assumes All           Assumes Stock and
                                  Stock Elections       Maximum Cash Elections
                                  ---------------       ----------------------  
                                            
Balance Sheet Data:
Working capital                   $    29,546                         26,546
Cash and short-term investments        13,473                         10,473
Total assets                          119,111                        118,762
Current liabilities                    15,096                         15,096
Long-term debt                         18,097                         31,697
Stockholders' equity                   85,918                         71,969




                                       10
<PAGE>
                        COMPARATIVE PER SHARE INFORMATION
                           Comparative Per Share Data

         The following  table presents  comparative  per share  information  for
Holdings and LabOne on a historical  basis and on a pro forma and equivalent pro
forma  basis,  assuming  that the merger had  occurred at the  beginning  of the
period presented for earnings per common share,  book value per common share and
dividends per share.  The Holdings  historical  per share  information  has been
adjusted  to reflect  the 1.5 to one stock  split  which will occur  immediately
prior to the merger.  Both Holdings and LabOne paid  dividends  during 1998. The
tables should be read in  conjunction  with the financial  statements  and notes
thereto of  Holdings  that are  incorporated  by  reference  in this Joint Proxy
Statement/Prospectus,  the  financial  statements  and notes  thereto  of LabOne
included  elsewhere in this Joint Proxy  Statement/Prospectus  and the unaudited
pro forma  financial  statements  and related notes thereto  included  elsewhere
herein. See "Unaudited Pro Forma Condensed Financial Statements."
                                                                Year Ended
                                                             December 31, 1998
                                                             -----------------
         Holdings - Historical
         Book value per common share...........................   $5.65
         Basic earnings per common share.......................     .53
         Diluted earnings per common share.....................     .52
         Cash dividends declared per share.....................     .80

         Holdings - Pro Forma (unaudited)
         (All Stock Elections)
         Book value per common share...........................    6.97
         Basic earnings per common share.......................     .52
         Diluted earnings per common share.....................     .51
         Cash dividends declared per share.....................     .78

         Holdings - Pro Forma (unaudited)
         (Stock and Maximum Cash Elections)
         Book value per common share...........................    6.52
         Basic earnings per common share.......................     .52
         Diluted earnings per common share.....................     .51
         Cash dividends declared per share.....................     .87

         LabOne - Historical
         Book value per common share...........................    4.00
         Basic earnings per common share........ ..............     .70
         Diluted earnings per common share.....................     .69
         Cash dividends declared per share.....................     .72

         LabOne - Equivalent Pro Forma (unaudited)
         (All Stock Elections)
         Book value per common share...........................    6.97
         Basic earnings per common share.......................     .52
         Diluted earnings per common share.....................     .51
         Cash dividends declared per share.....................     .78

         LabOne - Equivalent Pro Forma (unaudited)
         (Stock and Maximum Cash Elections)
         Book value per common share...........................    6.52
         Basic earnings per common share.......................     .52
         Diluted earnings per common share.....................     .51
         Cash dividends declared per share.....................     .87
<PAGE>

     The  LabOne  equivalent  pro forma per share  amounts  were  calculated  by
multiplying  the Holdings pro forma per share  amounts by the exchange  ratio of
one share to one share.

                                       11

                Comparative Market Price and Dividend Information

     Holdings.  The shares of Holdings common stock are listed for trading under
the symbol "LABH" as a NASDAQ  National Market issue on The NASDAQ Stock Market.
The  following  table  sets  forth the  quarterly  high and low sales  prices of
Holdings common stock as reported by NASDAQ and cash dividends declared, in each
case based on published  financial  sources.  All per share information has been
adjusted to reflect  the 1.5 for one stock  split  which will occur  immediately
prior to the merger.  The  Holdings  cash  dividends do not reflect the dividend
distributions in 1997 of SLH and Response which amounted to $10.20 per share.

                                           Holdings Common Stock
                                --------------------------------------------  
                                 (as adjusted for proposed stock split)
                                                                 Cash Dividends
                                                                    Declared
                                High              Low               per Share
                                ----             -----              ---------
  1997
  First quarter.........  $     28.08            21.67                 .20
  Second quarter........        23.83            21.16                 .20
  Third quarter.........        23.83            15.33                 .20
  Fourth quarter........        17.67            13.33                 .20

  1998
  First quarter.........        16.33            14.42                 .20
  Second quarter........        16.17            13.58                 .20
  Third quarter.........        15.67            10.17                 .20
  Fourth quarter........        12.42             9.33                 .20

  1999
  First quarter.........        12.75            10.08                 .20

     On  March  5,  1999,  the  last  full  trading  day  prior  to  the  public
     announcement of the merger,  the reported  closing price of Holdings common
     stock on the  NASDAQ  Stock  Market,  Inc.  was  $10.71  per  share,  after
     adjustment for the proposed 1.5 for one stock split.
<PAGE>

     LabOne.  The shares of LabOne common stock are listed for trading under the
symbol  "LABS" on the NASDAQ  National  Market issue on The NASDAQ Stock Market.
The following table sets forth the quarterly high and low sales prices of LabOne
common stock as reported by NASDAQ and dividends declared, in each case based on
published financial sources.

                                            LabOne Common Stock
                                --------------------------------------------  
                                 
                                                                 Cash Dividends
                                                                    Declared
                                High              Low               per Share
                                ----             -----              ---------
  1997
  First quarter ....        $  20.00            16.25                 .18
  Second quarter.........      18.50            15.25                 .18
  Third quarter..........      18.75            15.38                 .18
  Fourth quarter.........      18.50            15.13                 .18
   
  1998
  First quarter..........      18.25            15.75                 .18
  Second quarter.........      18.50            16.63                 .18
  Third quarter..........      17.13            11.50                 .18
  Fourth quarter.........      16.75             9.25                 .18
 
  1999
  First quarter..........      13.50             9.75                 .18

     On  March  5,  1999,  the  last  full  trading  day  prior  to  the  public
     announcement  of the merger,  the reported  closing  price of LabOne common
     stock on the NASDAQ Stock Market, Inc. was $10.88 per share.























                                       12
<PAGE>
                                  RISK FACTORS

     In addition to the matters  addressed in "Cautionary  Statement  Concerning
Forward-Looking  Statements"  on page 18 and the other  information  included in
this  document,  the  Holdings  and  LabOne  stockholders  should  consider  the
following risk factors carefully in determining whether to approve the merger.

Amortization of Holdings  Historical Goodwill and Goodwill Arising from the
Merger will Impact Earnings of the Combined Company

     For accounting purposes,  the merger is estimated to add from $22.2 million
to $24.9 million of goodwill to the balance sheet of the combined company.  This
transaction  goodwill arises due to the difference between the cost of acquiring
the  LabOne  shares in the  merger  and the fair  value of the LabOne net assets
allocated to those shares.  The cost of  acquisition  includes the amount of the
merger consideration, which includes LabOne stock options and warrants having an
estimated value of $3 million,  and other costs of the merger such as investment
banking,  legal,  accounting and financial printing costs which are estimated to
be about $1.8 million.  The transaction  goodwill is expected to be amortized by
the combined company over twenty years at an annual rate ranging from about $1.1
million  (assuming no cash  elections)  to $1.3 million  (assuming  maximum cash
elections).  The balance  sheet of the combined  company will also reflect about
$6.3 million of existing or  "historical"  goodwill that is currently a Holdings
asset that has resulted from Holdings prior acquisitions of LabOne common stock.
This  historical  goodwill is being  amortized at the rate of about $1.5 million
per year until April 2003.

     The earnings of LabOne common stock held by LabOne  stockholders other than
Holdings  have not  previously  been  affected  by the  transaction  goodwill or
Holdings historical goodwill.  However,  following the merger this goodwill will
negatively  impact  earnings of the combined  company at the annual rate of $2.6
million  (assuming no cash  elections)  to $2.8 million  (assuming  maximum cash
elections)  until April 2003,  and  thereafter at $1.1 to $1.3 million per annum
until the 20th anniversary of the merger.  Although these future charges against
earnings would not reduce cash generated from operations, they could depress the
market price of combined  company common stock following the merger.  This could
be the case if the combined  company's  stock prices are influenced by investors
that focus  primarily on the issuer's net earnings  rather than earnings  before
interest, taxes, depreciation and amortization ("EBITDA").

     The impact of this goodwill  will be different  for Holdings  stockholders.
The earnings of Holdings are already being  affected by the Holdings  historical
goodwill.  The  impact on  Holdings'  stockholders  of the  annual  $1.1 to $1.3
million of transaction goodwill will be lessened by the elimination of Holdings'
management and administrative expenses of approximately $1 million per annum.

     The amounts reflected in this discussion are on a pro forma or hypothetical
basis  as if the  merger  had  occurred  as  shown  in the pro  forma  financial
statements  included in this  document on pages 71 through 75. The actual amount
of  goodwill  that will be  incurred  in the merger will depend on the number of
combined  company shares issued in the merger,  the actual amount of transaction
costs and the fair value of the LabOne net assets at the time of the merger.
<PAGE>

Because Merger  Consideration  is Fixed,  The Merger  Consideration  Will Not be
Adjusted to Reflect  Changes in the Market  Value of  Holdings or LabOne  Common
Stock

      LabOne  stockholders  who receive Holdings common stock in the merger will
receive a fixed  number of shares of combined  company  common  stock for LabOne
shares  not  exchanged  for cash,  rather  than a number  of shares of  combined
company common stock with a particular  fixed market value. The market values of
Holdings  and  LabOne  common  stock  at the  time  of  the  merger  could  vary
significantly  from their prices on the date the merger  agreement was executed,
the date of this  document  or the date on which  stockholders  will vote on the
merger.  Because  the merger  consideration  will not be adjusted to reflect any
changes in the market value of Holdings or LabOne common stock, the market value
of the combined  company common stock issued in the merger and the LabOne common
stock surrendered for that common stock may be higher or lower than the value of
those shares on the date of the merger  agreement,  the date of this document or
the date of the meetings.

                                       13

LabOne Diversification and Growth Strategies May Not Produce Desired Results

     Although a principal  purpose of the merger is to enable  LabOne to enhance
its  diversification  and growth strategy,  primarily  through  acquisitions and
strategic alliances,  there is no assurance that it will be able to increase its
growth through that strategy or otherwise.  Furthermore,  significant  risks are
usually associated with any acquisition  strategy.  These include the ability to
effect  acquisitions  cost  effectively,  the ability to integrate  the acquired
companies and the ability to achieve the intended  benefits of the  acquisition.
There is also no assurance that pooling of interests  accounting  treatment will
be  available  to the  combined  company  after  the  merger.  Existing  pooling
requirements  that must be  satisfied  by both the  acquiror  and the target are
strict and limit eligible  pooling  transactions  to a narrow range of potential
combinations.   Also,  the  Financial   Accounting   Standards  Board  has  been
considering the issuance of rulings that would eliminate  pooling and reduce the
amortization   period  for  goodwill.   In  the  absence  of  pooling,   certain
acquisitions may not be feasible for the combined company. Those risks, together
with  LabOne's  increased  debt and changes in the market  place could result in
negative rather than positive results.

Increased  Debt  Resulting from the Merger Could Impair Future LabOne Growth and
Payment of Dividends

     It is expected  that the combined  company will need to borrow up to $ 13.6
million to satisfy cash elections by LabOne stockholders in the merger in excess
of $3 million.  Additional cash could be needed to the extent that any Holdings'
stockholders  perfect  dissenters'  rights.  These  additional  borrowings  will
increase annual interest  expense and subject the combined company to the normal
risks associated with debt financing. However, the amount of these borrowings is
not  expected to have a net negative  impact on earnings  per share  because the
increased  borrowing  expense  would be offset by the reduction in the number of
shares  of the  combined  company  issued  in the  merger  as a  result  of cash
elections by LabOne  stockholders.  The additional financial leverage could also
impair the  ability of the  combined  company to pursue  acquisition  and growth
strategies that would otherwise be available or impact future operating  results
due to higher debt service in the event that future  acquisitions are completed.
The loan  agreement  that  provides  for  borrowings  to finance  the merger and
existing  LabOne loan agreements do not provide for covenants that will directly
<PAGE>

prohibit  the  board  of  directors  of the  combined  company  from  continuing
Holdings' quarterly dividends at the current amount. However, the increased debt
combined with other  circumstances could cause the board of the combined company
to reduce or discontinue the quarterly  dividend.  Other  circumstances  include
negative  operating  results,  acquisition or other  expenditures or commitments
incurred to continue LabOne's diversification and growth strategy, or the effect
of general financial covenants contained in the loan agreement.

No Assurance that Regular Quarterly Dividends Will Continue at Pre Merger Levels

     The current Board of Directors of LabOne has no plans to cause the combined
company to discontinue  or reduce  Holdings'  current $0.30 per share  quarterly
dividend ($0.20 after the proposed stock split). However, after the merger, that
decision will be made by the new board of directors of the combined  company,  a
majority of whom will be independent non-management directors.  Although nine of
the twelve current LabOne directors are expected to continue as directors of the
combined company, no assurance can be given as to any dividend determinations to
be made by that board in the future.  That  determination will be subject to the
financial  condition,  operating results,  and liquidity of the combined company
and numerous other factors. In addition,  the pursuit by the combined company of
the LabOne growth and diversification strategy, the increased financial leverage
that is expected to result from the merger,  changes in the market for  LabOne's
products and services,  negative impacts caused by other risks described in this
document or any of them singly or together with other  factors  could  influence
the board of the combined company to reduce or eliminate the quarterly dividend.

Dilution

     After the merger, the LabOne stockholders other than Holdings who own about
19.5% of LabOne as of the  record  date,  will own about  21.1% of the  combined
company after the merger if no LabOne  stockholder elects cash or about 11.8% if
maximum cash is elected.  The interests of  stockholders  of both companies will
also be subject to

                                       14

dilution of their financial and voting  interests as a result of any exercise of
outstanding  options and warrants to purchase up to  2,837,927  shares of LabOne
common  stock at prices  ranging from $9.88 to $23.88 per share and any exercise
of options to  purchase  90,000  shares of Holdings  common  stock at a price of
$17.68 per share after the proposed stock split.

 LabOne Faces Price Competition in all of its Business Segments

     The primary means of competition in LabOne's  markets is pricing.  LabOne's
competitors  may be willing to reduce prices and to accept lower profit  margins
in order to more  effectively  compete.  Although LabOne seeks to  differentiate
itself from its  competitors  by  providing  more  complete  and higher  quality
services,  it may not be able to achieve its revenue and profitability  goals if
it cannot match or beat the prices charged by those competitors. This may have a
material adverse effect on the financial  condition and results of operations of
the combined company. See "Competition" on page 80.
<PAGE>

In Order to  Convert  Past  Operating  Losses  from  LabOne's  Clinical  Testing
Business to Future Operating Profits,  It Must Continue to Increase Its Clinical
Testing Volume

     If LabOne  does not  increase  its  market  share in the  clinical  testing
business,  this business may not become profitable.  Commencing in 1994 LabOne's
growth  strategy has been to expand its laboratory  testing  services to include
services  for the  healthcare  industry.  It has incurred  substantial  costs in
expanding this business,  including the establishment of a work force to conduct
clinical testing. LabOne's clinical testing business generated an operating loss
of $6.2 million in 1998 after a full allocation of corporate overhead.

      LabOne's  ability to  generate  profits  from this  business as a low-cost
provider  of  testing  services  to the  healthcare  industry  is  substantially
dependent upon future increases in clinical testing  revenues.  Because expenses
associated with maintaining the testing work force are relatively fixed over the
short term,  profit  margins from this  business  will increase only with higher
testing  volume.  Although  LabOne  has  been  successful  to date in  marketing
clinical  testing  services,  it cannot  guarantee that revenues in the clinical
business will continue to grow at historical rates.

LabOne's Continued Growth Is Partially Dependent upon Increased Patient Usage of
LabCard(R)

     If LabOne  cannot  market and sell the  LabCard  program or if  competitors
adopt similar  programs,  LabOne's  growth could be curtailed and  profitability
adversely  affected.  As  described  under  "Clinical  Services" on page 77, the
LabCard  program  is a key  element  in  LabOne's  marketing  strategy  for  the
provision of clinical testing services to the healthcare  industry.  The LabCard
program will continue to grow only if:

         o LabOne can continue to convince  potential  customers of its efficacy
           and value,
         o Enrolled  patients  continue to direct  laboratory work to
           LabOne, and
         o LabOne's  competitors do not adopt equivalent or superior
           marketing programs.

Continuing  Cost-reduction Efforts in the Healthcare Industry May Erode LabOne's
Profit Margins in the Clinical Testing Business

         Continued  cost-cutting efforts by third-party payers may erode testing
revenues and profit margins in LabOne's  clinical testing business and adversely
affect  clinical  testing  operations.  The clinical  testing  industry has been
affected  by the  growth  of  managed  care  organizations  and the  efforts  of
third-party  payers to control the utilization and cost of healthcare  services.
Managed care providers  typically use a limited number of clinical  laboratories
who agree to capitated  payment  contracts  providing for fixed monthly payments
per member  regardless of the number or costs of tests actually  performed.  The
effect of these payment contracts is to shift the cost of additional  testing to
the  laboratories.  As a result of the expansion of managed care,  many clinical
laboratories have experienced declines in per-test revenue.

          LabOne believes that it can effectively compete with existing clinical
laboratories in providing  low-cost  testing  services to managed care companies
and third-party payers. However, third-party payers' cost cutting efforts
                                       15
<PAGE>
may further erode testing revenues and profit margins in the industry, adversely
affecting LabOne's clinical testing operations.

LabOne's  Insurance Testing Business Is Highly Dependent on the General Level of
Demand for Testing Services from the Life Insurance Industry

         As described under "Information  Regarding LabOne - Insurance Services"
on page  76, a major  part of  LabOne's  business  is  providing  risk-appraisal
laboratory testing services to the life insurance industry.  The level of demand
for  testing  services  from the  insurance  industry  is subject to a number of
uncertainties, including

          o    the number of life insurance applications written,

         o the policy  amount  thresholds  at which  insurance  companies  order
            testing,

          o the type and costs of tests requested, 
          o testing innovations approved  by the FDA,  
          o the  extent to which  insurance  companies  may
            create in-house testing facilities, and
          o the development in the future of suitable on-site rapid assay
            testing products that would obviate the needfor centralized testing.

         As LabOne  currently  services  more  than  half of the life  insurance
laboratory  testing market in the United States and Canada,  any adverse changes
in industry  demand for  testing  services  would have an adverse  effect on its
results of operations.

The Loss or Suspension of Any of the Numerous Certifications Required to Conduct
LabOne's  Laboratory  Operations  Could  Have a Material  Adverse  Effect on Its
Business

         As discussed  under  "Regulatory  Affairs" on page 79, many of LabOne's
customers  require it to be  certified,  licensed or accredited or look to these
items as an indication of accuracy and  reliability  of test results.  To remain
certified,   licensed  and  accredited,   LabOne  is  constantly   subjected  to
inspections  and  proficiency  testing  challenges.  Failure  to meet any of the
numerous requirements could result in a loss of customers,  as well as a loss of
the right to perform  certain  tests.  See  "LabOne  is  Subject to  Significant
Government  Regulations and Its Failure to Comply With These  Regulations  Could
Adversely Affect LabOne" on page 16.

Laboratory Testing Services Entail an Inherent Risk of Legal Liability

         As discussed under  "Information  Regarding  LabOne" on page 16, LabOne
performs  testing  services for numerous clients who rely on the accuracy of its
testing  to  make  significant  insurance,   treatment  and  hiring  and  firing
decisions.  If it does not maintain  very high quality  controls,  the number of
reports  containing  false  positive or false negative  results could  increase,
resulting in significant potential liability.

         In addition,  federal and state laws  regulate when and to whom results
of specimen testing may be disclosed.  If LabOne does not adequately protect the
confidentiality of test subjects, significant liability could arise.

<PAGE>

          LabOne has  insurance to cover these types of claims,  but it can give
no  assurance  that such  coverage  is  adequate.  Any  uninsured  claims  could
adversely affect results of operation and financial condition.

LabOne is Subject  to  Significant  Government  Regulations  and Its  Failure to
Comply with These Regulations Could Adversely Affect LabOne

         Failure  to comply  with  CLIA,  SAMHSA  and state law could  result in
significant penalties.

          Failure to comply with the following  regulations  could result in the
closing of LabOne's business, denial of its right to perform certain tests, loss
of license or certification, significant fines and criminal penalties:

         o CLIA,  which is intended to ensure the quality and reliability of all
         medical testing in the United States,  o SAMHSA,  which has established
         detailed quality standards for drug testing on employees of federal

                                       16

              government contractors and certain other entities, and
         o State  regulations,  which often impose more  stringent  requirements
           than federal law.


See "Information Regarding LabOne - Substance Abuse Testing Services" on page 78
and "Regulatory  Affairs" on page 79. The effect of any of these adverse actions
could have a material adverse effect on LabOne 's business.

         Compliance with HIPAA regulations may be time consuming and costly.

         Congress  enacted the Health Insurance  Portability and  Accountability
Act of 1996. As a transmitter of health  information in electronic  form,  HIPAA
will  require  LabOne  to  maintain  administrative,   technical,  and  physical
safeguards to:

         o protect the integrity and confidentiality of healthcare  information,
         o protect the security of  healthcare  information, 
         o protect  against unauthorized  uses or  disclosures  of  healthcare
           information,  and
         o ensure compliance by LabOne officers and employees.

         HIPAA  will also  require  LabOne to  convert  healthcare  information,
previously  required  under  state  law to be  maintained  in a paper  form,  to
electronic form.

         Compliance with HIPAA  regulations may be required as early as the fall
of 2001. The  regulations are complex and  implementation  may be time consuming
and  costly.  Failure  to comply  could  result in  significant  civil  fines or
criminal prosecution.

          Regulations  Concerning the  Environment and  Occupational  Safety and
     Health could Result in Significant Penalties.
<PAGE>

         As discussed in  "Regulatory  Affairs" on page 79, LabOne is subject to
various federal, state and local laws and regulations concerning:

         o    the  environment,  such as laws and  regulations  relating  to the
              handling, transportation and disposal of specimens, infectious and
              hazardous waste and radioactive materials, and

         o    occupational  safety  and  health,  such as laws  and  regulations
              relating  to  workplace  safety for  workers who may be exposed to
              blood-borne pathogens, such as HIV.

Compliance with these  regulations is costly and failure to comply may result in
large fines, criminal and civil penalties and civil liability, including loss of
LabOne's  right  to  conduct  its  business.  LabOne  may be  required  to pay a
significant  amount in damages to an exposed  worker.  Costs could also increase
significantly if environmental and occupational  safety laws become more strict.
LabOne cannot predict future changes in these laws and regulations or the impact
of these changes.

A  Fire,  Tornado,  Earthquake,  Telecommunications  Failure  or  Similar  Event
Affecting  LabOne's only  Laboratory  Testing  Facility Could  Adversely  Affect
LabOne's Business

          LabOne  recently moved its  laboratory,  warehouse and  administrative
offices  into a new  testing  facility  in Lenexa,  Kansas.  It has a  full-time
alternative power source in the event of an electrical power shortage, has taken
steps to limit  the  possibility  of a fire and has made  contingency  plans for
conducting  its  testing  services  off site in the event of a disaster or other
emergency.  However,  its business  could be adversely  affected if this testing
facility  is  temporarily  shut  down or  severely  damaged  because  of a power
failure,  a  telecommunications  failure, a fire, an earthquake,  a tornado,  or
other serious event.

          LabOne  carries  business  interruption  insurance to  compensate  for
losses which might occur,  but it cannot  provide  assurance that this insurance
coverage will be enough to compensate for damages resulting from the

                                       17

disruption to its business.

LabOne's  Reliance on Express Couriers for the  Transportation to its Laboratory
Specimens  for Testing  Could  Adversely  Affect its Business If a Disruption in
Service Occurs

          LabOne generally relies on express couriers to transport  specimens to
its  laboratory  quickly and safely.  A disruption in these  couriers'  business
resulting  from a labor  dispute or other event could have an adverse  affect on
business.
<PAGE>

LabOne's  Services  Are Highly  Dependent  upon  Computer  Information  Systems.
Changes to LabOne's Computer System and Those of Its Clients and Vendors May Not
Be Adequate to Address All Year 2000 Problems

         Failure to properly address the Year 2000 problem could have a material
adverse  effect  on  LabOne's  business,  financial  condition  and  results  of
operations.  It has  established an oversight  committee to review both internal
compliance and the Year 2000  preparation and  contingency  plans of its clients
and vendors.  See "Year 2000" on page 85. It expects to complete  all  remaining
internal Year 2000  objectives by the end of the second quarter of 1999, but can
give no assurance that adjustments to computer systems will completely eliminate
all Year 2000  problems.  LabOne also  cannot  provide  any  assurance  that the
systems of clients and vendors will be  converted to address Year 2000  problems
in a timely and  effective  manner or that such  conversions  will be compatible
with LabOne computer systems.

LabOne's  Continued  Growth may be Hindered if  Competitive  On-Site Rapid Assay
Testing Products are Developed and Approved

         LabOne  serves  its   customers   through   laboratory   based  testing
facilities.  Although  some on-site rapid assay  testing  products  exist in the
marketplace,  rapid assays have not achieved broad market  acceptance due to the
high cost of such assays,  difficulties  in maintaining the  confidentiality  of
tests,  liability  concerns,  less accurate testing results and the absence of a
broad testing menu. If more competitive  assays which do not have such drawbacks
become  available,  such products  could be  substituted  for  laboratory  based
testing and have an adverse impact on LabOne's  financial  condition and results
of operations.

CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

         Holdings and LabOne have made  certain  forward-looking  statements  in
this document,  and in the other documents referred to herein.  These statements
are  subject  to risks  and  uncertainties,  as  described  below.  Examples  of
forward-looking   statements   include  pro  forma   financial   statements  and
projections  relating to revenues,  income or loss,  earnings or loss per share,
financial  condition,  capital  expenditures,  the  payment  or  non-payment  of
dividends,  and other  financial  items;  statements  of plans  and  objectives;
statements  of  future  economic  performance;  and  statements  of  assumptions
underlying these statements.  Forward-looking statements are statements that are
not   historical   in  nature  and  can  often  be  identified  by  the  use  of
forward-looking  terminology,  such as  "believes,"  "expects,"  "may,"  "will,"
"should," "could," "intends," "plans," "estimates" or "anticipates,"  variations
thereof or similar expressions.
         Forward-looking  statements are not guarantees of future performance or
results.  They involve risks,  uncertainties and assumptions.  Future results of
operations,  financial condition,  business and stock values of Holdings, LabOne
and the combined  company may differ  materially  from those  expressed in these
forward-looking  statements.  Many of the  factors  that  will  determine  these
results  and values are beyond the  ability of  Holdings or LabOne to control or
predict.  Stockholders  of Holdings  and LabOne are  cautioned  not to put undue
reliance on any forward-looking statement.
         There are a number of factors  that could  cause or  continue  to cause
actual results of operations,  financial condition,  business or stock values to
differ  materially  from  those  discussed  in the  forward-looking  statements,
including those described under "Risk Factors" and the factors  described below.
Other factors not identified herein
                                       18
<PAGE>

could also have such an effect.  All forward  looking  statements  are expressly
qualified in their entirety by the Risk Factors  described above and the factors
described  below.  Among the factors that could cause  actual  results to differ
materially  from  those  discussed  in the  forward-looking  statements  are the
following:

     o    materially  adverse changes in general  economic  conditions or in the
          markets served by LabOne;  o LabOne's  ability to successfully  market
          its services to new customers in new markets;

     o    the volume, pricing and mix of laboratory tests performed by LabOne;

     o    the  ability  of  LabOne  to  complete   and   integrate   appropriate
          acquisitions, strategic alliances and joint ventures;
     
     o    Acquisition  costs,  restructuring  and other charges  associated with
          acquisitions;

     o    Changes in LabOne's management personnel;

     o    Future  changes  in  laws  and  regulations,   including   regulations
          affecting  government  reimbursement for clinical  laboratory testing,
          and  regulations  governing  anti-fraud and abuse,  drug testing,  and
          environmental and occupational  safety. 

     Any  forward-looking  statement  contained herein is made as of the date of
this  document.  Holdings  and LabOne do not  undertake  to  publicly  update or
correct any of these  forward-looking  statements  in the future.

                             LABONE GROWTH STRATEGY

         LabOne has developed an integrated  strategy  designed to significantly
increase its growth,  which is described  below. For the reasons set forth below
and  elsewhere  in this  Joint  Proxy  Statement/'Prospectus,  both  LabOne  and
Holdings  believe  that the  merger is  essential  to the  execution  of several
important  elements of this growth  strategy.  See  "Background  of the Merger,"
"Holdings'  Reasons  for  the  Merger  and  Recommendations  of its  Board"  and
"LabOne's Reasons for the Merger and Recommendation of its Board" on pages 29 to
34.

Internal Growth

         LabOne  plans  to  continue  to  implement   existing  internal  growth
strategies    which   have   focused   on   (i)   increasing    efficiency   and
cost-effectiveness in providing high quality laboratory testing services at very
competitive  prices and (ii) gaining  increased  market  share in the  substance
abuse and clinical  testing market  segments which it entered in 1994.  LabOne's
primary  strategy  for  creating  significant  internal  growth is  through  the
continued expansion of its benefit management program and LabCard(R). LabCard is
a vehicle  for  delivering  outpatient  laboratory  services  and is marketed to
healthcare payers (self-insured  employers and other groups,  health maintenance
organizations and insurance companies).  The LabCard provides laboratory testing
at reduced  rates,  as  compared  to  traditional  laboratories,  using a unique
benefits  design  that shares the cost  savings  with the  patient.  The patient
incurs no  out-of-pocket  expense  when the  LabCard is used and the  healthcare
payer receives substantial savings on its laboratory charges.
<PAGE>

Acquisitions

         LabOne  recently moved into a new 268,000 square foot,  custom designed
facility   located  in  Lenexa,   Kansas  that   consolidates   its  laboratory,
administrative  and warehouse  facilities and functions into one building.  This
new facility improves the efficiency of its operations and approximately doubles
its capacity.  LabOne now has the capacity to acquire other  laboratory  testing
companies  and  achieve  cost  savings by  consolidating  their  less  efficient
operations and serving their customers from this single  location.  If LabOne is
successful  in acquiring  less  efficient  laboratory  operations  at reasonable
prices, the economies of scale arising from its expanded laboratory capacity

                                       19

should enable LabOne to compete more effectively on price, service and quality.

         Customers  in each of the  market  segments  which  LabOne  serves  are
struggling  with  ways to  increase  their  competitiveness  by  lowering  their
overhead  costs  and  increasing  their  efficiency.   LabOne  believes  it  can
successfully differentiate itself from its competitors by actively assisting its
customers in meeting these challenges through integrated  services that collect,
warehouse and manage healthcare and insurance risk data.

         LabOne  supplies  greater  value to its  customers  in this  regard  by
offering  complementary  data collection and storage services that eliminate the
customer's  need to maintain an in-house staff to collect  certain kinds of data
that are essential to conducting the customer's  business.  A prime illustration
of this approach is LabOne's recent acquisition of Systematic Business Services,
Inc.  ("SBSI").  SBSI provides  telephone  inspections,  motor vehicle  reports,
attending  physician  statements  and claims  investigation  services  which are
routinely   required   by  life  and  health   insurers   nationwide.   SBSI  is
cost-effective in delivering this data because of its specialization,  expertise
and  economies  of scale  that are very  difficult  for  LabOne's  customers  to
duplicate  with an  in-house  staff.  LabOne  believes  that  other  acquisition
opportunities  exist which would permit LabOne to offer  complementary  services
providing similar benefits to LabOne's  customers.  Broadening the array of such
services  should  provide  LabOne  with a unique  advantage  in its  markets and
provide  opportunities to increase the volume of its business and improve profit
margins.

         LabOne also  delivers  greater  value to its  customers by reducing the
cost burden of managing the voluminous paper records that historically have been
necessary to conduct their businesses and satisfy regulatory  requirements.  The
data  collected  by  LabOne  and  its  testing  results  are  each   deliverable
electronically  via  reports  and  formats  that are  readily  capable  of being
customized  to meet the needs of  customers  through an  automated  link between
LabOne's   custom-designed   laboratory  and  business   processing  system  and
customers' computer systems.  As a result,  LabOne's customers can significantly
reduce their data  collection and storage costs,  streamline  their  information
processes and improve their  efficiency and  reliability,  which should serve to
further  strengthen  LabOne's position with each customer.  This capability also
may  enable  LabOne's  customers  to  comply  more   cost-effectively  with  the
requirements of the Health Insurance  Portability and Accountability Act of 1996
("HIPAA") and regulations  under HIPAA that may be required as early as the fall
of 2001. HIPAA will require many customers to convert healthcare  information to

<PAGE>

electronic form that state law had previously required to be maintained in paper
form. The competitive  advantage  derived from  customers'  reliance on LabOne's
capabilities  as a  collector,  warehouse  and  manager of  healthcare  and risk
management  data  should  increase as LabOne  augments  the scope of its service
offerings through acquisitions of complementary businesses.

         LabOne believes that its acquisition  strategy will be enhanced greatly
by the ability to offer its common stock as part or all of the consideration for
the  acquisition  of other  laboratory  testing  companies  and  companies  with
complementary   service  offerings.   Many  of  these  candidates  do  not  have
substantial tangible assets and the acquisition of such companies for cash would
create  significant  goodwill  because  the  purchase  price  is  likely  to  be
determined as a multiple of the acquired company's earnings or cash flow. If the
merger with Holdings is  completed,  LabOne would be able to account for certain
acquisitions using its common stock on a pooling-of-interests basis, rather than
on the purchase accounting basis currently required,  thus avoiding the creation
of goodwill and the resulting  dilution of LabOne's future earnings.  Completion
of the merger would also  eliminate the present  adverse effect on Holdings that
would result from  acquisitions  using LabOne  common stock due to the potential
loss of Holdings'  eligibility to file consolidated income tax returns.  Without
the  ability  to  use  its  common  stock  to  effect  acquisitions,  and to use
pooling-of-interests  accounting to account for them, LabOne believes it will be
at a significant  disadvantage in competing for acquisition  candidates in order
to  participate  in  the  consolidation  of the  clinical  and  substance  abuse
laboratory  testing  markets which it believes will occur in the next few years.
LabOne  currently has no plans,  understandings,  agreements or arrangements for
any such acquisition.

Strategic Alliances

     LabOne believes that strategic  alliances offer important  opportunities to
facilitate its growth. The purpose of

                                       20

such alliances is to align the  incentives of LabOne and its strategic  partners
in order to expand  business  opportunities  for their  mutual  benefit.  LabOne
believes  that an important  means of aligning  the  interests of LabOne and its
strategic partners is the issuance to them of LabOne common stock or warrants to
purchase common stock.

         LabOne has entered into strategic  alliances with companies  engaged in
claims  processing and marketing that are focused on serving numerous  customers
that are too small for LabOne to market directly.  LabOne has issued warrants to
purchase  LabOne  common stock to these types of  companies  which do not become
exercisable  unless specified  performance  standards are met. These performance
standards are designed to ensure that sufficient  profitability  is achieved for
LabOne to avoid  dilution  of its  earnings  per  share  when the  warrants  are
exercised.  LabOne  believes that the  performance  incentive  inherent in these
warrants should enable LabOne to generate  significant  additional  revenues and
differentiates  it from its competitors who typically offer only cash-based fees
for services.
<PAGE>

         Warrants  may also be used by LabOne to obtain  technology  in order to
provide competitive  advantage to LabOne's business.  Businesses possessing such
technology  frequently want to participate in its economic benefits as its value
is proven over time.  The  issuance of warrants or other  contractual  rights to
receive common stock of LabOne would enable LabOne and such  businesses to share
the upside potential of such technology while reducing the substantial financial
pressure  that  might  otherwise  be caused if cash  were used to  acquire  such
technology.

         LabOne  believes  that  there are many  other  opportunities  to create
strategic alliances that would improve marketing  capabilities,  capture leading
technology or provide other types of competitive advantage.  LabOne's ability to
pursue  those  opportunities  is  currently  constrained  by  Holdings'  need to
maintain its ownership in excess of 80 % of LabOne's outstanding common stock so
that it can file  consolidated  income tax returns  for itself and  LabOne.  The
merger would permit this constraint to be eliminated and should result in higher
trading  volumes,  greater  liquidity,  a more  efficient  market and  increased
investor interest in the common stock of the combined  company.  LabOne believes
that the resulting enhanced efficiency of the market for its common stock should
increase the relative attractiveness of the stock as an inducement for potential
strategic  partners to enter into  alliances  with LabOne and should improve the
incentive for enhanced performance inherent in such alliances.

         By  providing   LabOne   management  with  the  opportunity  to  effect
acquisitions  and strategic  alliances  with common stock,  the enhanced  growth
potential  of the common  stock is also  expected  to increase  the  performance
incentive inherent in stock options and other equity-based  management incentive
programs.  LabOne  believes that the ability to offer common stock with enhanced
growth  characteristics  should increase the likelihood of LabOne  retaining the
management of acquired  companies and attracting new management  talent in order
to improve LabOne's operating performance.



                                       21

<PAGE>
                               THE PROPOSED MERGER
General

         Holdings and LabOne are furnishing this document to their  stockholders
in connection with the  solicitation of proxies by their Boards of Directors for
use at their annual meetings of their  stockholders  and at any  adjournments or
postponements thereof.

         Holdings Annual Meeting.

         At the Holdings annual meeting,  Holdings stockholders will be asked to
vote upon a proposal to adopt the Agreement  and Plan of Merger,  as amended and
restated, dated as of March 7, 1999, pursuant to which the merger of LabOne into
Holdings will be effected.  In the merger,  among other things,  the Articles of
Incorporation  and Bylaws of Holdings  will be amended and restated as described
below under  "Amendments to Holdings'  Articles of Incorporation  and Bylaws" on
page 51.  Holdings  stockholders  will  also be asked to vote  separately  on an
amendment to change the definition of "Continuing  Director Quorum" in Article X
of the  Articles of  Incorporation.  The  amendment to Article X is discussed in
more  detail  under  "Holdings  Annual  Meeting  Proposals"  on page 120 and the
amendment to the Articles of Incorporation and Bylaws contemplated by the merger
agreement are also discussed in more detail under "Proposed  Merger - Amendments
to Holdings'  Articles of Incorporation  and Bylaws" on page 51 and "Comparative
Rights of Holdings Stockholders" on page 109. Holdings stockholders will also be
asked to ratify the Board's  appointment of independent  public  accountants for
1999  and to  elect  directors  to serve in the  event  that the  merger  is not
effected.  The  affirmative  vote of the holders of  two-thirds of the shares of
Holdings  common stock  outstanding  on the record date is required to adopt the
merger agreement, the affirmative vote of a majority of those outstanding shares
is  required  to  adopt  the   amendment   to  Article  X  of  the  Articles  of
Incorporation,  the affirmative  vote of the holders of a majority of the shares
present  and voting at the  meeting is  required  to ratify the  appointment  of
independent  public  accountants and a plurality of votes cast with shares being
voted cumulatively is required to elect directors. See "Holdings Annual Meeting"
on page 22 and "Holdings Annual Meeting Proposals" on page 120.

         LabOne Annual Meeting.

         At the LabOne meeting,  LabOne  stockholders will be asked to vote upon
(a) a  proposal  to adopt the  Agreement  and Plan of  Merger,  as  amended  and
restated,  dated as of March 7, 1999,  pursuant to which  LabOne will merge with
and into Holdings,  (b) a proposal to elect twelve  directors of LabOne to serve
until the  effective  time of the merger,  or if the merger is not  consummated,
until the 2000 annual meeting of  stockholders  and (c) a proposal to ratify the
selection  of KPMG LLP as  independent  public  accountants  for  LabOne and its
subsidiaries  for 1999. Under Delaware law, the merger agreement must be adopted
by the affirmative vote of a majority of the outstanding shares of LabOne Common
Stock  entitled  to vote on the  merger  agreement  at the  LabOne  meeting.  In
addition,  the merger agreement provides that the merger must be approved by the
affirmative  vote of the  holders of a  majority  of the  outstanding  shares of
LabOne Common Stock that are owned by the LabOne  Unaffiliated  Stockholders and
that are voted on the proposal.  The directors will be elected by a plurality of
the  votes of the  shares  present  in  person  or  represented  by proxy at the
meeting.  The  ratification of the selection of independent  public  accountants
must be approved by the affirmative  vote of a majority of the shares present in
person  or  represented  by proxy at the  meeting  and  entitled  to vote on the
proposal.  See "LabOne  Annual Meeting of  Stockholders"  at page 67 and "LabOne
Annual Meeting Proposals" at page 99.
<PAGE>

The Holdings Stock Split

         The merger agreement  provides that, prior to the effective time of the
merger,  the Holdings  Board will declare a stock split payable as a dividend so
that, immediately prior to the effective time, each issued and outstanding share
of Holdings  common stock shall be  automatically  converted  into 1.5 shares of
Holdings common stock. The dividend will be conditioned upon satisfaction of all
conditions to the merger and will be payable after the merger in common stock of
the combined  company to holders of record of Holdings common stock  immediately
prior to

                                       22
the merger.

Exchange of LabOne Shares and Cash Elections

         Merger  Consideration  for LabOne Common Stock.  Subject to the maximum
cash payment amount  limitation  described  below, if you are a record holder of
LabOne common stock  immediately  prior to the  effective  time you may elect to
receive either:

         o        a cash price per share equal to $12.75;

         o        one (1) share of combined company common stock; or

         o        a combination of cash and shares.

         If you fail to make a timely  election to receive cash for your shares,
you will receive  combined  company  common stock for all of your LabOne  common
stock.

         If you elect to  receive  cash for some or all of your  LabOne  shares,
your right to receive cash in the merger is subject to the  limitation  that the
maximum amount payable in cash with respect to all shares of LabOne common stock
may not exceed $16,600,000 in the aggregate.  If the amount payable in cash with
respect to shares of all  holders  who make cash  elections  exceeds the maximum
cash payment  amount,  then your cash election shares will be converted into the
right to receive a  combination  of combined  company  common  stock and cash in
proportion  to $16.6 million  divided by the aggregate  amount of all valid cash
elections.  See "The Merger  Agreement - Conversion  of LabOne Common Stock Into
Shares of the Combined Company or Cash" on page 56.

         For  Example  - if all cash  elections  amount to  $20,000,000  and you
elected all cash for 100 of your  shares,  you would  receive cash for 83 LabOne
shares and combined company stock for 17 of your LabOne shares as follows:

$16,600,000/$20,000,000 = .83 x 100 shares =83 shares x $12.75 = $1,058 in cash

      and .17 x 100 shares = 17 shares of combined company common stock

         A form for  making  your  election  accompanies  the  delivery  of this
document.  The form includes  instructions for completing the form and returning
it with your LabOne stock certificate if you are making a cash election.


<PAGE>

         PROPERLY COMPLETED CASH ELECTIONS MUST BE RECEIVED BY
AMERICAN STOCK TRANSFER & TRUST COMPANY BEFORE 10:00 A.M. KANSAS
CITY TIME ON  ______________, 1999, TO BE EFFECTIVE.   LABONE SHARES
WHICH ARE NOT SUBJECT TO AN EFFECTIVE CASH ELECTION WILL BE
CONVERTED INTO SHARES OF THE COMBINED COMPANY ONLY.

Stock Options and Warrants

        LabOne Options and Warrants. As the surviving corporation, Holdings will
assume each  outstanding  option or warrant to purchase LabOne common stock that
is outstanding at the effective  time,  whether or not then  exercisable.  Those
options and  warrants  will become  options  and  warrants to purchase  the same
number of shares of common stock of the combined company,  at the same price and
on the same terms as are  provided in the  existing  option  agreements  for the
purchase of LabOne common stock. In addition,  the merger agreement contemplates
that no option or  warrant  will vest or become  exercisable  as a result of the
merger.

                                       23

       Holdings Stock Options. At the effective time, stock options issued under
the Holdings 1997  Directors'  Stock Option Plan will be adjusted to reflect the
1.5 for 1 stock  split.  Approval  of the merger  agreement  will also  effect a
ratification  of action  taken by the Holdings  Board on August __,  1998,  that
amended the Plan and outstanding  options so that they could be exercised by the
optionee  at any time  until  the end of the term of the  option  following  the
termination of director status due to a merger such as the merger,  contemplated
by the merger  agreement.  See  "Interests of Certain  Persons in the Merger" on
page 48.

Background of the Merger

         Following the sale of its insurance  operations in 1990, Holdings was a
diversified  holding  company  whose  assets  consisted  primarily of a majority
interest in LabOne, a substantial ownership position in Response Oncology, Inc.,
a publicly  traded  oncology  management  business,  and several  investments in
healthcare and insurance services businesses,  as well as real estate and energy
ventures.  In early  1995,  Holdings  announced  that it would  begin to explore
strategic alternatives to maximize stockholder value. One of the strategies that
was discussed was a possible merger of Holdings into LabOne.

         Following  Holdings'  announcement  that  it  would  explore  strategic
alternatives  to maximize  stockholder  value,  including  a possible  merger of
Holdings  into LabOne,  on February  10, 1995,  the Board of Directors of LabOne
established  a  special  committee  (the  "Special  Committee")   consisting  of
independent  non-management members of the LabOne Board of Directors to consider
and act upon any  merger  or  reorganization  proposal  presented  to  LabOne by
Holdings.  The LabOne  Board also  authorized  the Special  Committee  to engage
independent legal and financial advisers. The Special Committee engaged Stinson,
Mag & Fizzell in May 1995 as its  independent  legal  adviser  and U.S.  Bancorp
Piper Jaffray in April 1997 as its independent financial adviser.

         At the request of the Special  Committee's  legal  adviser,  the LabOne
Board of Directors  expanded the authority of the Special Committee on August 4,
1995 to exercise all lawfully  delegable powers of the Board for the purposes of
representing  solely  the  interests  of  LabOne  and  the  LabOne  Unaffiliated
Stockholders  in all  respects  in  connection  with any  potential  transaction

<PAGE>

whereby, directly or through one or more affiliates, (i) Holdings would make any
proposal or offer for a merger,  consolidation or other business  combination or
reorganization  involving  LabOne,  or (ii) a third  party  would make any other
proposal or offer  (whether by tender or exchange offer or otherwise) to acquire
the LabOne common stock or all or  substantially  all of the assets of LabOne or
its subsidiaries.  The expanded  authority also authorized the Special Committee
to (i) investigate,  evaluate and analyze transaction proposals,  (ii) negotiate
the terms  and  conditions  of such  proposals  for the  benefit  of the  LabOne
Unaffiliated  Stockholders,  (iii) determine after such negotiation whether such
proposal  would be in the best  interest  of LabOne and the LabOne  Unaffiliated
Stockholders,   (iv)   approve  or  reject  such   proposal,   and  (v)  make  a
recommendation to the LabOne Board or the LabOne Unaffiliated  Stockholders that
they should or should not vote in favor of such proposal.

         By the  end  of  March  1997,  Holdings  had  disposed  of or had  made
arrangements for the disposition of all of its assets other than its interest in
LabOne  and about $7 million of cash and cash  equivalents.  On April 10,  1997,
Holdings  proposed to the Special  Committee that Holdings be merged  downstream
into LabOne to enhance LabOne's opportunities for growth and to provide Holdings
stockholders with a direct investment in LabOne. The proposal  contemplated that
each share of  Holdings  common  stock  would be  converted  into 1.65 shares of
LabOne common stock after first distributing all of its cash and other assets to
Holdings' stockholders.

         On July 1, 1997, Holdings terminated those merger discussions following
a  determination  that a merger with either  entity  surviving  would have to be
accounted for as a purchase transaction rather than as a pooling of interests as
had  been  originally  contemplated.   Accordingly,  either  an  upstream  or  a
downstream  merger of the two  companies  would reduce  earnings of the combined
company due to the addition of a significant  amount of amortizable  goodwill to
the balance  sheet of the combined  company.  The goodwill  would arise from the
transaction  itself - "transaction  goodwill" - and from existing or "historical
goodwill"  accrued by Holdings from its prior  purchases of LabOne common stock.
At that time, Holdings believed that the stockholders of both companies would be
better served by

                                       24


continuing the existing holding company  structure under a strategy  designed to
reduce Holdings' management and administrative expenses.

         Consistent  with this  strategy,  Holdings  restructured  its Board and
management  in  September  1997.  The Board was reduced  from eleven to the four
present  directors,  none of whom hold any office or position  with LabOne.  Mr.
Jacobs was also elected to replace Mr. Grant as the Chief  Executive  Officer of
Holdings,  while Mr. Grant  continued in office as the  Chairman,  President and
Chief Executive Officer of LabOne.  The reduction in the number of directors and
officers and a contract  with a former  Holdings  subsidiary  (then known as SLH
Corporation) to provide  Holdings with  administrative  services for $75,000 per
annum enabled  Holdings to reduce  management and  administrative  expenses from
prior levels.

         On August 6, 1998, Mr. Grant,  advised Mr. Jacobs that he believed that
LabOne would be interested in resuming merger discussions. Mr. Grant stated that
it would be desirable for LabOne to pursue a growth  strategy that could involve
the use of LabOne stock for  acquisitions  in view of the need for critical mass
and economies of scale and the  anticipated  consolidation  of the industry.  He
<PAGE>

further  noted  that,  as a  subsidiary,  acquisitions  by  LabOne  could not be
accounted  for under the pooling of  interests  method of  accounting  and that,
without such  accounting  treatment,  many  acquisition  opportunities  would be
unrealistic. Management of LabOne had therefore concluded that the advantages of
combining  Holdings  and  LabOne  could  potentially  justify  the  effect  that
amortization of transaction  and historical  goodwill would have on the earnings
of the combined company.

         On August  13,  1998,  Holdings  management  and  Lathrop & Gage  L.C.,
Holdings' legal counsel,  met with LabOne management and Morrison & Hecker, LLP,
outside general counsel to LabOne.  The meeting,  followed  regularly  scheduled
meetings of the Boards of  Directors  of both  companies  at  LabOne's  offices.
During  the   meeting,   LabOne   management   discussed  a  variety  of  growth
opportunities that would be consistent with LabOne's  diversification  strategy.
LabOne management explained that the current structure,  under which LabOne is a
subsidiary  of Holdings,  was a  significant  impediment  to the pursuit of this
diversification  strategy because the existing  structure made it impossible for
LabOne to utilize  pooling of  interests  accounting  with  respect to potential
acquisitions.  It was recognized that the  combination  would also eliminate the
need of Holdings to continue  its  strategy of owning a minimum of 80% of LabOne
common stock for tax reasons.  That strategy was inconsistent  with the strategy
of LabOne to use its stock for  acquisitions and the building of other strategic
relationships.

         Following  the meeting,  the Holdings  Board  concluded  that  resuming
merger  discussions  would be  advisable.  The  August  6,  1998  merger  of SLH
Corporation  and  Syntroleum  Corporation  resulted  in the  termination  of the
contract under which SLH Corporation was providing management and administrative
services to  Holdings  for $75,000 per annum.  As a  consequence,  Holdings  was
required to engage a staff of full time employees and to bear all other expenses
related  to  the  operation  of a  public  company.  A  merger  followed  by the
discontinuation  of all  operations at the Holdings  level would  eliminate this
expense and its negative impact on Holdings' per share  earnings.  The financial
and strategic  benefits  expected to be obtained by enabling  LabOne to pursue a
growth  strategy  based in  significant  part on  acquisitions  also appeared to
outweigh the negative  accounting impact of the transaction  goodwill that would
result from the combination.

         On  September  2,  1998,  Mr.  Jacobs,  with the  authorization  of the
Holdings Board,  made arrangements to engage Salomon Smith Barney Inc. to advise
Holdings with respect to the financial aspects of a possible merger with LabOne.
After conducting due diligence  during September 1998,  Salomon Smith Barney met
on October 5, 1998 with the  Holdings  Board and  Lathrop & Gage to discuss  the
terms of a possible  merger.  Although it was  recognized  that the  transaction
would generate  significant  amortizable  goodwill that would negatively  impact
earnings,  the Holdings  Board  concluded  that the long term  interests of both
companies would be promoted by a merger.

         Prior to the October 5, 1998  Holdings  Board  meeting,  Lathrop & Gage
contacted  Morrison & Hecker,  outside general  counsel to LabOne,  to arrange a
meeting on the afternoon of October 5 with the LabOne Special Committee.




                                       25


<PAGE>
         At the  request of the legal  adviser  to the  Special  Committee,  the
Special Committee of LabOne that was originally established in February 1995 was
reconvened  with the  powers  granted to it in 1995.  Due to two  changes on the
LabOne Board of Directors, two of the original members of the Special Committee,
including the original  Chairman of the Special  Committee,  no longer served on
the LabOne Board of Directors.  The  remaining  members,  Richard S.  Schweiker,
Richard A. Rifkind,  M.D., and Joseph H. Brewer, M.D., convened a meeting of the
Special  Committee  on  October  16,  1998 at which Mr.  Schweiker  was  elected
Chairman  of the Special  Committee  and John E. Walker was made a new member of
the Special Committee.  Also at that meeting,  the Special Committee  reaffirmed
its decision to retain Stinson,  Mag & Fizzell as its independent  legal adviser
and U.S. Bancorp Piper Jaffray as its independent financial adviser.

         Following the October 5 Holdings  Board meeting,  Holdings  management,
Lathrop & Gage and Salomon Smith Barney met with  representatives of the Special
Committee,  Stinson,  Mag & Fizzell,  P.C. and U.S. Bancorp Piper Jaffray During
the meeting,  Mr. Jacobs  proposed a merger of LabOne into Holdings.  The merger
would be immediately  preceded by a split of each outstanding  share of Holdings
common  stock into 1.73  shares.  Holders of LabOne  other than  Holdings  would
receive one share of the combined  company for each LabOne  share.  The combined
company  would have the name and  management  of LabOne,  the board of directors
would be as  recommended  by LabOne,  subject to the  approval  of the  Holdings
Board,  the  transaction  would not trigger early  vesting of LabOne  options or
warrants  and the  transaction  would  require the approval of a majority of all
LabOne stockholders voting on the merger. Holdings also requested assurance that
its current dividend policy be continued following the merger.

         The 1.73 split  ratio  proposed  by  Holdings  reflected  ownership  by
Holdings  stockholders  as a group after the merger  equal to the same number of
shares of LabOne  common  stock  presently  held by Holdings  (10,712,200)  plus
additional  shares  having  a  market  value  equal  to  Holdings  cash and cash
equivalents then on hand.

         The LabOne  Special  Committee  indicated  that it would  consider  the
proposal and respond following a period of due diligence.

         On  November  6, 1998,  the Special  Committee,  through its  financial
adviser,  made a counter  proposal  that  provided  for a split of each share of
Holdings  common stock into 1.38 shares prior to the merger.  The proposed  1.38
split factor was calculated  based upon an analysis of the relative market value
of the shares of Holdings  and LabOne  stock and the  possible  effect on market
values  that  anticipated  pro  forma  adjustments  for  additional  amortizable
goodwill would have upon earnings per share,  assuming the price-earnings  ratio
remained the same.  This proposal did not provide  additional  consideration  to
Holdings  stockholders  for the Holdings cash and cash  equivalents  because the
Special  Committee and its advisers believed that such cash was already factored
into the market price of Holdings stock.

          On November 13, 1998,  at the  direction  of Holdings,  Salomon  Smith
Barney responded to the counter proposal with a proposed split ratio of 1.60. On
November 20, 1998, the Special  Committee  responded  through U.S. Bancorp Piper
Jaffray with a proposed  split ratio of 1.50.  The next day, at the direction of
Holdings,  Salomon  Smith  Barney  countered  with a  proposed  split  of  1.56.
Principal areas of negotiation during the preceding  discussions centered on the
uncertain  impact of the estimated  pro forma effects of the merger,  especially
amortization  of  historical  and  transaction  goodwill  on share value and the
resulting  market  prices of the shares of the combined  company  following  the
merger,  and on the value of the cash and cash equivalents on Holdings'  balance
sheet with respect to the split ratio.
<PAGE>

         On November 30, 1998,  the Special  Committee and Holdings  tentatively
agreed on a 1.56 split  ratio.  Other terms  proposed  by the Special  Committee
included a proposal that the board of directors of the combined  company consist
of a majority of independent directors, a dividend policy to be set by the board
of the  combined  company,  the  exclusion  of votes  cast by  Holdings  and its
affiliates in determining the approval of the merger by a majority of the LabOne
Unaffiliated  Stockholders  and a provision that Holdings would reimburse LabOne
for transaction related expenses if the merger is not consummated.  U.S. Bancorp
Piper Jaffray was requested by the Special Committee to

                                       26

prepare an opinion confirming the fairness of the proposed merger consideration,
from a  financial  point  of  view,  to the  LabOne  Unaffiliated  Stockholders.
Holdings and the Special  Committee then continued  through their legal advisers
to negotiate other terms for a definitive merger agreement.

         On  December  4,  1998,  Lathrop & Gage  forwarded  a draft of a merger
agreement  to  Stinson  Mag,  with a view to  resolving  any open  issues in the
process of finalizing the merger agreement.

         By December 18, 1998,  the parties had  concluded  negotiations  on the
substantive  provisions  of the merger  agreement  except for  provisions in the
proposed articles of incorporation and bylaws of the combined company.  Meetings
of the  Boards of both  companies  and of the  Special  Committee  to act on the
merger  agreement had been  scheduled to be held on December 21. On December 18,
1998,  U.S.  Bancorp  Piper  Jaffray,  based on its  continued  analysis  of the
proposed merger consideration in connection with the preparation of its fairness
opinion,  advised  the Special  Committee  of its view that the  proposed  split
factor of 1.56 was inadequate from a financial point of view.

         On December 22, 1998, U.S.  Bancorp Piper Jaffray,  at the direction of
the  Special  Committee,  discussed  with  Salomon  Smith  Barney a  preliminary
alternative  proposal.  This  proposal  contemplated  a fixed  split  factor  of
unspecified amount for Holdings shares and a floating exchange ratio including a
collar  mechanism  limiting the market  trading  range within which the exchange
ratio  would be  determined.  It was the  Special  Committee's  belief that this
alternative   structure  was  a  means  of  better   assuring  that  the  LabOne
Unaffiliated  Stockholders would receive consideration  substantially equivalent
to the value of the shares they held prior to the merger.

         Holdings  concluded that the alternative  structure was  unsatisfactory
due to its focus on the market value of Holdings  stock and because it failed to
propose a specific split ratio or objective  criteria for determining the merger
consideration.  On  December  22,  1998,  Holdings  common  stock was trading at
$11.22,  assuming a 1.56 split,  in relation to a LabOne market price of $14.50.
Holdings believed that its stock price was being negatively  affected by factors
arising  from the existing  structure  that would  disappear  and not affect the
combined  company  following  the  merger.   These  factors  included  Holdings'
management  and  administrative  expenses  and its low tax  basis in its  LabOne
shares. Holdings believed that the proposal did not give proper consideration to
the elimination of these negative factors.

         On January 14, 1999,  Lathrop & Gage met with  Stinson,  Mag to discuss
the concerns of both  parties,  the impasse  between  their clients and possible
approaches to a resolution of the matter. During the meeting, the legal advisers
discussed  possible  alternative  approaches  to valuation and structure and the
common interests of LabOne and Holdings in renewing  negotiations after Holdings
<PAGE>

     was provided with a more  definitive  response from the Special  Committee.
Stinson  Mag  indicated  that it would try to provide a  response  by the end of
January.  In the following weeks the Special Committee and its advisers reviewed
alternative  structures and analyzed the changes in the pricing  environment for
LabOne's services,  the resulting changes in LabOne's financial  forecast,  and
their impact on share value and the trading price of LabOne's  common stock with
a view to developing a new proposal.

         On February 12, 1999, the Holdings  Board held its regularly  scheduled
quarterly board meeting. Although previous requests had been made to the Special
Committee to provide the further  response to enable the Board to consider it at
that  meeting,  none  had  been  transmitted.   After  deliberation,  the  Board
instructed  Lathrop & Gage to advise  Stinson Mag that Holdings  would  consider
negotiations  terminated  with  respect  to the  proposed  combination  unless a
further  response  was  received on or before  Wednesday,  February 17. The lead
attorney at Lathrop & Gage was not able to contact the lead  attorney at Stinson
Mag to discuss the deadline  until the  afternoon of February 16. As a result of
the discussion on the 16th, Lathrop & Gage was advised that they could expect to
receive the further  response the next morning,  although no firm commitment was
made to meet that schedule.  Based on that expectation,  Lathrop & Gage believed
it to be  unnecessary  to then  advise  Stinson  Mag of the  deadline.  When the
further response was not received the next morning,  Lathrop & Gage then advised
Stinson Mag that the Holdings  Board would consider  negotiations  terminated if
the further  response  was not  received by midnight on that day,  February  17.
During the discussion,  Stinson Mag expressed  concerns about the ability of the
Special Committee and its advisors to complete their analysis, conduct a meeting
and deliver a response within the time allotted. Stinson Mag

                                       27

indicated,  however,  that an  effort  would  be made to meet the  deadline  but
requested that an extension be granted to permit  appropriate steps to be taken.
The next  morning,  February  18, 1999,  the Holdings  Board met again since the
further  response  had  not  been  delivered.  Due to the  short  notice  of the
deadline,  Lathrop & Gage was directed by the Holdings Board to deliver a letter
to the Special  Committee to the effect that Holdings would resume  negotiations
if it received the further response by noon on February 22, 1999. Lathrop & Gage
delivered that notice on the afternoon of February 18.

         On the morning of February 22,  1999,  the Special  Committee,  through
U.S. Bancorp Piper Jaffray,  delivered to Holdings a new proposal. Under the new
proposal,  the  outstanding  Holdings common stock would be split at the rate of
1.5 for one. After the split, the LabOne  stockholders other than Holdings would
be entitled to elect to receive for each share of LabOne  stock either one share
of stock of the combined  company or $13.00 per share in cash,  or a combination
of cash and stock. The Special Committee proposed this new structure in order to
achieve a number of objectives,  including:  to provide the LabOne  Unaffiliated
Stockholders  with the  opportunity to continue  their  investment in the LabOne
operating  entity  through a  tax-deferred  exchange of their LabOne  shares for
shares of the combined company;  to provide an orderly  liquidation  opportunity
for those LabOne  Unaffiliated  Stockholders that prefer to sell their interests
in LabOne; and to modulate the unpredictable impact of the merger on the trading
market  and market  price of the shares of the  combined  company  
resulting  from,  among other things,  the reduction in earnings of the combined
company due to amortization of historical and transaction goodwill.



<PAGE>
         Thereafter,  Holdings, the Special Committee and their respective legal
and financial  advisors  continued to negotiate the terms of a potential merger,
after which Holdings and the Special  Committee  agreed that the Holdings common
stock  would be split 1.5 for one and after  the split the  LabOne  Stockholders
other than  Holdings  could elect to have each LabOne  share  exchanged  for one
share of the  combined  company or $12.75 in cash or a  combination  of cash and
shares, subject however to a $16.6 million cash limit.

         The February 22 Special  Committee  proposal also suggested a change in
the  merger  structure  such that  LabOne  would be merged  into an  acquisition
subsidiary  to be formed by Holdings  rather than directly  into  Holdings.  The
change in structure  would  eliminate  statutory  appraisal  rights for Holdings
stockholders  and  the  requirement  for  a  two-thirds  vote  of  the  Holdings
stockholders to approve the merger. Morrison & Hecker also proposed on behalf of
LabOne  changes in the  Articles of  Incorporation  and Bylaws for the  combined
company  that would have  eliminated  cumulative  voting  for  directors  of the
combined  company and that would have  required an 80% vote of  stockholders  to
amend any provision of the Bylaws. Holdings objected to all of these changes and
after  discussions  between  Lathrop & Gage,  Stinson Mag, and Morrison & Hecker
(with  respect to the  Articles of  Incorporation  and Bylaws only) the Holdings
position was agreed to.

         On March 4, 1999, Lathrop & Gage circulated a draft of a revised merger
agreement.  On the afternoon of March 5, 1999, the parties had reached consensus
on all issues and final copies of the merger  agreement were circulated on March
6, 1999.

         On March 7,  1999,  special  meetings  of the  Boards of  Directors  of
Holdings and LabOne and a meeting of the LabOne Special Committee were held.

         At the March 7, 1999 Holdings Board meeting, Lathrop & Gage reported on
the course of discussions  with the Special  Committee and reviewed the terms of
the merger agreement,  drafts of which had been circulated to directors prior to
the meeting.  A representative of KPMG LLP,  independent  public accountants for
Holdings,  reported on various  accounting  matters related to the  transaction.
Salomon  Smith Barney made a financial  presentation  to the Board and delivered
its oral opinion,  which was subsequently  confirmed in writing and is described
on page 34, to the effect that, as of March 7, 1999,  and based upon and subject
to the matters  stated in the  opinion,  and after taking into account the stock
split, the merger  consideration  was fair to Holdings from a financial point of
view.  After  further  discussion  and  further  considerations  of the  matters
presented by Holdings  management,  independent public accountants and legal and
financial  advisors,   the  Holdings  Board  unanimously   approved  the  merger
agreement.

                                       28


         At the  March 7,  1999  LabOne  Board  meeting,  the  LabOne  directors
reviewed the terms of the merger agreement,  drafts of which had been circulated
to the directors  prior to the meeting.  Representatives  of U.S.  Bancorp Piper
Jaffray made a financial  presentation  to the Special  Committee and the LabOne
Board with respect to its opinion and the  financial  analysis  supporting  that
opinion.  U.S.  Bancorp  Piper Jaffray  expressed  its oral  opinion,  which was
subsequently  confirmed in writing and described on page 39, to the effect that,
as of March 7,  1999,  and  based  upon and  subject  to  matters  stated in the
opinion, and after taking into account the stock split, the merger consideration
was  fair,  from  a  financial  point  of  view,  to  the  LabOne   Unaffiliated
Stockholders.  The Special Committee reported to the LabOne Board that, based in
<PAGE>

part  on  the  advice  and  recommendations  of its  advisers,  the  merger  was
unanimously  approved by the Special  Committee and that it determined  that the
merger  was  fair  to,  and in the  best  interest  of,  LabOne  and the  LabOne
Unaffiliated  Stockholders.  Following  this  discussion,  the  LabOne  Board of
Directors approved the merger and declared its advisability.

         Following the meetings the merger  agreement was signed by Holdings and
LabOne.

         On March 8, 1999, the merger was publicly announced.

         In April 1999 the merger  agreement  was amended and restated to revise
the procedures for making cash elections.  The original  agreement provided that
cash elections would be made during a fifteen day period  immediately  following
the effective time of the merger.  The amendments changed that procedure so that
cash  elections  will be made  between  the date of mailing of this Joint  Proxy
Statement/Prospectus and the commencement of the LabOne meeting of stockholders.
The change was made  primarily  so that voting and election  decisions  would be
made at the same time.

Holdings  Reasons  for  Merger;  Recommendation  of the  Board of  Directors  of
Holdings
         At a special  meeting of the Holdings  Board held on March 7, 1999, the
Holdings Board unanimously:

o    determined  that the merger  agreement  and the  transactions  contemplated
     thereby  (including  the  amendments to the Articles of  Incorporation  and
     Bylaws  provided for in the merger  agreement)  are fair to and in the best
     interests of Holdings and Holdings stockholders;

o    approved the terms and provisions of the merger agreement;

o    recommended that the merger agreement be adopted by Holdings  stockholders;
     and

o    directed  that the merger  agreement  and  amendments  to the  Articles  of
     Incorporation  of Holdings be  submitted  to the  stockholders  at the 1999
     annual meeting of stockholders.

         The Holdings  Board  reached its decision  and  recommendation  for the
following reasons:

o    LabOne is Holdings' only remaining  material asset other than cash, and the
     merger will allow Holdings'  stockholders to hold their equity interests in
     LabOne   directly  rather  than  indirectly   through   Holdings,   thereby
     eliminating holding company management and administrative costs;

o    the merger will  facilitate the use by LabOne of its stock as a currency in
     creating strategic relationships with business partners;

o    the  merger  will  position  LabOne to grow  both  internally  and  through
     acquisitions,  and will enable it to consider  transactions not feasible in
     the existing structure;

o    the   merger   should   enable   LabOne  to   effect   pooling-of-interests
     transactions;

                                       29
<PAGE>

o    by  consolidating  management,  the  merger  will  sharpen  management  and
     investor focus;

o    the  merger  should  increase  the  float  and  liquidity  of the  combined
     company's stock, thereby creating the opportunity for increased Wall Street
     research coverage and investor interest; and

o    the merger  also comes at the right time since  LabOne had  recently  moved
     into new and larger facilities that provide it with the ability to grow and
     handle larger volumes of testing services.

         The Holdings Board made its determination  after careful  consideration
of,  and  based  on,  a  number  of  factors,  including,  among  other  things,
discussions with Holdings' management,  independent public accountants and legal
and financial advisors, the factors described above and the following additional
factors:

o    the  Holdings  Board's  understanding  of the current  economic  and market
     conditions  and  trends in the  insurance,  clinical  and  substance  abuse
     testing  markets,  the current  value of Holdings and LabOne and  strategic
     options available to Holdings other than a merger with LabOne;

o    the  current  and  historical  market  prices of the  common  stock of each
     company;

o    information  concerning the financial performance and conditions,  business
     operations, debt and capital levels, asset quality, personnel and prospects
     of LabOne and  Holdings,  and each  company's  projected  future  financial
     performance  as a separate  entity and on a combined  basis,  including the
     ability  of the  combined  company  to  service  and  repay  the debt to be
     incurred to satisfy cash elections;

o    the  judgment,  advice and analyses of Holdings  management,  including its
     favorable recommendation of the merger;

o    presentations of Salomon Smith Barney, including its opinion dated March 7,
     1999 as described  below to the effect that, as of that date and based upon
     and subject to the matters  stated in the  opinion,  and after  taking into
     account the stock split, the merger consideration was fair from a financial
     point of view to Holdings (See "Opinion of Holdings'  Financial Advisor" on
     page 34);

o    the terms of the merger  agreement,  including the conditions to closing of
     the merger,  the ability of  Holdings to consider  unsolicited  alternative
     business combination proposals,  and the ability to terminate the agreement
     on certain conditions;

o    the fact that  options and  warrants of LabOne will not be  triggered  as a
     result of the merger;

o    the availability of financing necessary to satisfy cash elections;

o    that  the  merger  will  be   accomplished  on  a  tax-free  basis  to  the
     stockholders for United States federal income tax purposes, except for cash
     received by  stockholders  in connection  with cash elections or in lieu of
     fractional shares;


<PAGE>

o    the fact that the merger will be accomplished on a tax-free basis to LabOne
     and Holdings so that the combined company's tax basis in its assets will be
     the same as LabOne's tax basis in such assets; and

o    the governance structure of the combined company.

In   reaching its decisions the Holdings Board did not view any single factor as
     determinative, and did not find

                                       30

it necessary or  practicable  to assign any relative or specific  weights to the
various factors  considered.  Furthermore,  individual  directors may have given
differing weights to different factors.

         The Holdings Board also considered other countervailing considerations,
including:

o    the  fact  that  the  transaction  goodwill  created  by  the  merger  will
     negatively impact future earnings of the combined company;

o    the fact that  Holdings  stockholders  will in the aggregate own up to 1.6%
     less equity in the combined  company than currently  through Holdings 80.5%
     ownership  of LabOne,  assuming  none of the LabOne  stockholders  elect to
     receive cash;

o    the fact that the  dividend  policy of the  board of the  combined  company
     could  change  following  the merger in order to  provide  funds for future
     growth strategies of the combined company;

o    the increased leverage that may be created to fund cash elections; and

o    the risks associated with LabOne's business.

         However,   the   Holdings   Board   determined   that   the   foregoing
considerations  were outweighed by the potential benefits of the merger that are
summarized above.

         Accordingly,   the  Holdings  Board  unanimously  recommends  that  the
stockholders of Holdings vote "FOR" the adoption of the merger agreement.

LabOne Reasons For the Merger ;  Recommendations of the LabOne Special Committee
and Board of Directors

         The LabOne Special  Committee and the Board reached their decisions and
recommendations for the following reasons:

o    Growth and Long-Term Value Creation.  The Special  Committee  believes that
     the  merger  is  a  necessary  step  to  enable  the  LabOne   Unaffiliated
     Stockholders  to enjoy the potential for  long-term  growth in  stockholder
     value, primarily through acquisitions and strategic alliances. The need for
     greater  critical  mass,  economies  of scale and  resources to achieve the
     financial  and  strategic  benefits of growth and enhanced  competitiveness
     were important considerations in this regard.

o    Ability to Use Pooling of  Interests  Accounting  for Future  Acquisitions.
     Holdings owns 80.5% of the common stock of LabOne which makes it impossible
     for  LabOne  to  account  for  acquisitions   using  pooling  of  interests
<PAGE>

     accounting.  By merging  LabOne into  Holdings,  eliminating  this  parent-
subsidiary corporate  structure,  the combined company is expected to be able to
engage in certain  acquisitions  applying the pooling of interests  method after
July 1999.  Pooling is  critical  for certain  acquisitions  because it does not
create an  intangible  goodwill  asset to reflect  the  difference  between  the
purchase price and the fair value of the net assets acquired, which would reduce
earnings in future periods  arising from the  amortization  of a goodwill asset.
Many  of the  companies  that  might  be  acquisition  candidates  do  not  have
substantial  tangible  assets and the  purchase  price  might  therefore  create
extensive goodwill because it would be based primarily on a multiple of earnings
and/or  cash flow.  Accordingly,  because  valuations  in the public  market are
heavily influenced by future  expectations of earnings per share, the ability to
utilize  pooling of interests  accounting  will enable the  combined  company to
accelerate growth by effecting  acquisitions  without  experiencing  earnings or
valuation  effects  due  to  amortization  expenses  from  goodwill  that  would
otherwise result.

                                       31

o    Increased  Liquidity of the Stock.  LabOne currently has about 13.3 million
     shares  outstanding,  of which only  approximately  1.8 million  shares (or
     13.9% of the total shares  outstanding)  freely trade in the public  market
     (of the  remaining  shares,  10.7  million  shares are held by Holdings and
     800,000  shares  are held by LabOne  insiders).  Following  the  merger and
     assuming that none of the LabOne  stockholders other than Holdings elect to
     receive  cash as all or part of their  merger  consideration,  the combined
     company will have  approximately  12.3  million  shares  outstanding,  with
     approximately 9.8 million shares (or 79.7% of the total shares outstanding)
     freely trading and approximately  2.5 million shares held by insiders.  The
     greater  liquidity  in the  public  market  for the  stock of the  combined
     company  may  result in  higher  trading  volumes,  greater  liquidity  and
     enhanced pricing of the stock because investors will have greater assurance
     of  their  ability  to  acquire  or  dispose  of  stock  positions  without
     substantially impacting the market price of the stock. In addition, greater
     liquidity  and  increased  trading  volume  may  result in more  securities
     analysts  reporting on the stock as well as a more efficient trading market
     for the stock.

o    Corporate Governance.  In connection with the merger, the Special Committee
     negotiated  for a  majority  of the  board of the  combined  company  to be
     composed of  independent  directors  which it nominated.  In addition,  the
     merger also will  eliminate the 80.5%  control  position of Holdings as the
     parent  company and result in control  residing in a fluid  aggregation  of
     public  stockholders.  With no controlling  stockholders,  the  independent
     board will have greater  discretion  to pursue  strategies  for growth that
     would,  among other things,  have been inconsistent with Holdings' strategy
     to maintain  ownership  of more than 80% of LabOne's  common  stock for tax
     reasons. In addition, by eliminating Holdings' control position,  potential
     acquisition  targets  and  merger  partners  will have a  greater  level of
     comfort  regarding  the ability of the combined  company's  management  and
     board to  enter  into  and  effect  strategic  combinations  and  alliances
     independently.  The  independent  board will also have  greater  freedom to
     consider a dividend policy that is consistent with a growth strategy.





<PAGE>

o    Streamlined  Corporate and Ownership Structure.  The merger will streamline
     the  existing  corporate  structure  by  collapsing  the  parent-subsidiary
     structure into a single publicly-held corporate entity. This simplification
     generally will eliminate confusion in the market arising from the existence
     of two securities which  essentially  pertain to the same operating entity.
     The merger  will cause the  consolidation  of investor  interest  currently
     divided between the two entities.

o    Non-taxable   Transaction  for  Stock  Received.   The  merger  will  be  a
     non-taxable event to the holders of LabOne stock (except to the extent they
     elect to receive cash).

o    Attraction and Retention of Effective Management.  Enhancing  opportunities
     for  growth  of the  business  is  believed  to be  highly  significant  to
     attracting  and  retaining  effective  management  that  will  possess  the
     leadership  and  vision  to  achieve   sustained   increases  in  long-term
     stockholder value.

o    Structure of Transaction.  Offering a cash election opportunity in addition
     to equity consideration will provide LabOne Unaffiliated  Stockholders with
     the opportunity to continue their investment in the LabOne operating entity
     through a  tax-deferred  exchange of their LabOne  shares for shares of the
     combined  company while  providing an orderly  liquidation  opportunity for
     those LabOne Unaffiliated  Stockholders that prefer to sell their interests
     in LabOne. It will also modulate the unpredictable  impact of the merger on
     the trading  market and market price of the shares of the combined  company
     resulting  from,  among  other  things,  the  reduction  in earnings of the
     combined   company  due  to  amortization  of  historical  and  transaction
     goodwill.  The cap of $16.6  million  on the  amount of such  elections  is
     expected to be  sufficient to allow LabOne  stockholders  who are likely to
     elect cash to have all of their  shares  purchased  for cash,  particularly
     since the  officers  and  directors  of Holdings  and the Grant family have
     represented that they will not elect cash.

                                       32

o    Market Check and Authority to Negotiate Superior  Alternative.  The Special
     Committee negotiated for the expansion of its authority to act on behalf of
     the LabOne Board in considering  and negotiating any other proposals for an
     acquisition of, or combination  with, LabOne with any third parties as well
     as Holdings.  The Special  Committee also negotiated for the inclusion of a
     fiduciary out in the merger  agreement which permits the Special  Committee
     to  terminate  the merger  agreement  if a  financially  superior  proposal
     reasonably  capable of being financed is presented prior to consummation of
     the merger. If no such proposal is forthcoming prior to consummation of the
     merger, it will support the Special Committee's  conclusion that the merger
     is the best  transaction  reasonably  available to LabOne and to the LabOne
     Unaffiliated Stockholders.

o    Fair  Dealing and Fair Price.  The terms of the merger were  negotiated  at
     arms length on behalf of LabOne  Unaffiliated  Stockholders  by the Special
     Committee  which is composed  of  independent  directors  and is advised by
     independent  legal and  financial  advisers.  The  Special  Committee  also
     negotiated  to have the merger be subject to  approval  by the holders of a
     majority of the shares owned by LabOne Unaffiliated  Stockholders that vote
     on the merger so that they would have an independent  opportunity to decide
     to approve the merger without  coercion and after receiving full disclosure
     of all material facts. The merger  consideration  was determined to be fair
<PAGE>

     by the  Special  Committee  in  part  in  reliance  upon  the  opinion  and
     supporting financial analysis of U.S. Bancorp Piper Jaffray that, as of the
     date of its opinion, such consideration was fair, from a financial point of
     view,  to the  LabOne  Unaffiliated  Stockholders.  The  Special  Committee
     understood  that it should conduct its analysis,  negotiations  and actions
     with respect to the merger with the degree of  independence  equivalent  to
     that of a wholly-independent board of directors dealing at arms-length with
     a  disinterested  third-party  entity  seeking  to merge with  LabOne.  The
     Special  Committee also  recognized that it had the power not to pursue the
     merger  and the  authority  to  pursue  instead  any  superior  alternative
     transaction that might arise prior to the  consummation of the merger.  The
     Special  Committee  determined  that it would approve the merger only if it
     determined  that (i) the merger is in the best  interests of LabOne and the
     LabOne  Unaffiliated  Stockholders and is the best  transaction  reasonably
     available,  (ii) the terms and  conditions  of the merger are the best that
     can possibly be obtained from Holdings after  negotiating  at  arms-length,
     (iii) and the terms of the merger are procedurally and  substantively  fair
     to LabOne and the LabOne Unaffiliated  Stockholders.  The Special Committee
     concluded   that  these   criteria  had  been  satisfied  as  part  of  its
     determination  to approve the merger and recommend its approval by the full
     LabOne Board and the LabOne Unaffiliated Stockholders.

         The LabOne Board and Special Committee made their  determination  after
careful  consideration of, and based on, a number of factors,  including,  among
other things,  discussions with LabOne's  management,  accountants and legal and
financial   advisers  and  the  factors   described  above.  In  reaching  their
determinations,  the LabOne Board and Special  Committee did not view any single
factor as determinative,  and did not find it necessary or practicable to assign
any relative or specific weights to the various factors considered. Furthermore,
individual  directors and committee  members may have given differing weights to
different factors.

         The  LabOne  Board  and  Special   Committee  also   considered   other
countervailing considerations, including:

o    the fact that  following  the merger  transaction  goodwill and  historical
     Holdings  goodwill will negatively  impact earnings of the combined company
     at the annual rate of $2.6  million  (assuming no cash  elections)  to $2.8
     million  (assuming maximum cash elections) until April 2003, and thereafter
     at $1.1 to $1.3 million per annum until the 20th anniversary of the merger.

o    the  possibility  that as a result of the merger the stock of the  combined
     company may trade at a discount due to, among other  things,  the reduction
     in earnings  resulting from  amortization of the historical and transaction
     goodwill, which was modulated by the cash election feature of the

                                       33


    transaction structure.

o    the increased leverage that may be created to fund cash elections.

o    the  risks and  contingent  liabilities  associated  with  Holdings'  prior
     operations, but which were considered to be remote in view of due diligence
     investigation completed prior to execution of the merger agreement.


<PAGE>

o    the strict  technical  requirements  that must be satisfied by the acquiror
     and the target to utilize pooling-of-interests accounting and the risk that
     pooling-of-interests   accounting   may  be  eliminated  by  the  Financial
     Accounting Standards Board.

         However,  the LabOne Board and Special  Committee each  determined that
the foregoing  considerations  were outweighed by the potential  benefits of the
merger that are summarized above.

         Accordingly,   the  LabOne  Board  and  Special  Committee  unanimously
recommend,  with W. D. Grant  abstaining,  that the  stockholders of LabOne vote
"FOR" the adoption of the merger agreement.  Mr. Grant abstained upon the advice
of his personal  counsel due to the appearance of a conflict of interest  caused
by his beneficial  ownership of approximately 16.7% of the outstanding shares of
common stock of Holdings.

Opinion of Holdings' Financial Advisor

     Salomon  Smith  Barney was  retained by  Holdings  to act as its  financial
advisor  in  connection  with the  proposed  merger.  In  connection  with  this
engagement,  Holdings requested that Salomon Smith Barney evaluate the fairness,
from a financial point of view, to Holdings of the  consideration  to be paid by
Holdings in the merger.  On March 7, 1999,  at a meeting of the  Holdings  Board
held to evaluate  the proposed  merger,  Salomon  Smith Barney  delivered to the
Holdings  Board an oral  opinion,  which opinion was  subsequently  confirmed by
delivery of a written  opinion  dated March 7, 1999,  to the effect that,  as of
that date and based upon and subject to the matters  stated in the opinion,  and
after taking into account the stock split,  the merger  consideration  was fair,
from a financial point of view, to Holdings.

In arriving at its opinion, Salomon Smith Barney:

o    reviewed the merger agreement;

o    held discussions with senior officers,  directors and other representatives
     and advisors of Holdings and senior  officers,  other  representatives  and
     advisors of LabOne  concerning the businesses,  operations and prospects of
     Holdings and LabOne;

o    examined publicly available business and financial  information relating to
     Holdings and LabOne as well as financial  forecasts  and other  information
     and data for  Holdings  and LabOne  which  were  provided  to or  otherwise
     discussed  with  Salomon  Smith Barney by the  managements  of Holdings and
     LabOne,  including  information  relating  to  strategic  implications  and
     operational benefits anticipated to result from the merger;

o    reviewed  the  financial  terms of the  merger as set  forth in the  merger
     agreement in relation to, among other things, current and historical market
     prices and  trading  volumes of  Holdings  common  stock and LabOne  common
     stock,  the historical and projected  earnings and other  operating data of
     Holdings and LabOne,  and the  capitalization  and  financial  condition of
     Holdings and LabOne;

o    considered,  to the extent publicly available, the financial terms of other
     similar   transactions   recently   effected  which  Salomon  Smith  Barney
     considered relevant in evaluating the merger;

                                       34
<PAGE>

o    analyzed financial,  stock market and other publicly available  information
     relating to the  businesses of other  companies  whose  operations  Salomon
     Smith  Barney  considered  relevant in  evaluating  those of  Holdings  and
     LabOne;

o    evaluated  the  potential  pro  forma  financial  impact  of the  merger on
     Holdings; and

o    conducted other analyses and  examinations  and considered other financial,
     economic and market criteria as Salomon Smith Barney deemed  appropriate in
     arriving at its opinion.

         In rendering  its  opinion,  Salomon  Smith Barney  assumed and relied,
without  independent  verification,  upon the accuracy and  completeness  of all
financial and other  information and data publicly  available or furnished to or
otherwise  reviewed by or discussed  with Salomon Smith Barney.  With respect to
financial  forecasts  and other  information  and data  provided to or otherwise
reviewed by or discussed with Salomon Smith Barney,  the managements of Holdings
and LabOne advised Salomon Smith Barney that the forecasts and other information
and data  were  reasonably  prepared  on  bases  reflecting  the best  currently
available  estimates and judgments of the  managements of Holdings and LabOne as
to the future  financial  performance  of Holdings and LabOne and the  strategic
implications  and  operational  benefits  anticipated to result from the merger.
Salomon Smith Barney assumed, with the consent of Holdings, that the merger will
be treated as a tax-free reorganization for federal income tax purposes.

         Salomon  Smith  Barney did not express any opinion as to what the value
of the  surviving  corporation  common  stock  will be  when  issued  to  LabOne
stockholders  pursuant  to the  merger  or the  price  at  which  the  surviving
corporation  common stock will trade  subsequent  to the merger.  Salomon  Smith
Barney  did not make and was not  provided  with an  independent  evaluation  or
appraisal of the assets or liabilities,  contingent or otherwise, of Holdings or
LabOne  nor did  Salomon  Smith  Barney  make  any  physical  inspection  of the
properties or assets of Holdings or LabOne. Salomon Smith Barney did not express
any view as to,  and  Salomon  Smith  Barney's  opinion  does not  address,  the
relative merits of the merger as compared to any alternative business strategies
that might exist for  Holdings or the effect of any other  transaction  in which
Holdings  might  engage.  Salomon  Smith  Barney  noted  that  its  opinion  was
necessarily based upon information  available,  and financial,  stock market and
other  conditions and  circumstances  existing and  disclosed,  to Salomon Smith
Barney as of the date of its opinion.  Although  Salomon Smith Barney  evaluated
the merger  consideration  from a financial point of view,  Salomon Smith Barney
was not asked to and did not recommend the specific consideration payable in the
merger,  which was  determined  through  negotiation  between  Holdings  and the
Special Committee. No other instructions or limitations were imposed by Holdings
on Salomon  Smith Barney with respect to the  investigations  made or procedures
followed by Salomon Smith Barney in rendering its opinion.

         The full text of Salomon Smith Barney's  written opinion dated March 7,
1999, which describes the assumptions made,  matters  considered and limitations
on the review undertaken,  is attached to this document as Appendix B and should
be read carefully in its entirety. Salomon Smith Barney's opinion is directed to
the Holdings Board and relates only to the fairness of the merger  consideration
from a financial point of view to Holdings, does not address any other aspect of
the merger and does not  constitute a  recommendation  to any  stockholder  with
respect to any matter  relating to the proposed  merger.  The summary of Salomon
Smith Barney's opinion included in this document is qualified in its entirety by
reference to the full text of the opinion.
<PAGE>

         In preparing its opinion,  Salomon Smith Barney  performed a variety of
financial and comparative analyses, including those described below. The summary
of these analyses does not purport to be a complete  description of the analyses
underlying Salomon Smith Barney's opinion. The preparation of a fairness opinion
is a complex analytic process  involving  various  determinations as to the most
appropriate  and relevant  methods of financial  analyses and the application of
those methods to the particular circumstances and, therefore, a fairness opinion
is not readily susceptible to summary  description.  Accordingly,  Salomon Smith
Barney  believes  that  its  analyses  must be  considered  as a whole  and that
selecting portions of its  analyses  and  factors  or  focusing  on  information
presented in 

                                     35

tabular format, without considering  all analyses and  factors or the  narrative
description of the  analyses, could  create  a  misleading  or  incomplete  view
of  the  processes underlying its analyses and opinion.

     In its analyses,  Salomon  Smith Barney  considered  industry  performance,
general business,  economic,  market and financial conditions and other matters,
many of which are beyond the  control of  Holdings  and  LabOne.  The  estimates
contained in Salomon Smith Barney's  analyses and the valuation ranges resulting
from any particular analysis are not necessarily  indicative of actual values or
predictive of future results or values,  which may be significantly more or less
favorable than those suggested by its analyses.  In addition,  analyses relating
to the value of  businesses  or securities do not purport to be appraisals or to
reflect  the prices at which  businesses  or  securities  actually  may be sold.
Accordingly,  Salomon  Smith  Barney's  analyses and  estimates  are  inherently
subject to substantial uncertainty.

         Salomon  Smith  Barney's  opinion  and  analyses  were only one of many
factors  considered  by the Holdings  Board in its  evaluation of the merger and
should  not be viewed as  determinative  of the views of the  Holdings  Board or
management with respect to the merger consideration or the proposed merger.

         The  following  is a summary  of the  material  analyses  performed  by
Salomon Smith Barney in connection  with its opinion to the Holdings Board dated
March 7, 1999.  The financial  analyses  summarized  below  include  information
presented in tabular format. In order to fully understand Salomon Smith Barney's
financial analyses, the tabular presentation must be read together with the text
of the accompanying  summary. The tabular presentation alone does not constitute
a complete description of the financial analysis. Considering the data set forth
below  without  considering  the full  narrative  description  of the  financial
analysis,  including the methodologies and assumptions  underlying the analysis,
could create a misleading or incomplete view of Salomon Smith Barney's financial
analyses.

Selected Companies Analysis.

         Using publicly available information, Salomon Smith Barney analyzed the
market values and trading multiples of LabOne,  Holdings and the following three
selected publicly held companies in the laboratory testing services industry:

         o        Laboratory Corporation of America Holdings
         o        Quest Diagnostics Incorporated
         o        Unilab Corporation

         Salomon Smith Barney  compared market values as a multiple of estimated
<PAGE>

calendar years 1999 and 2000 net income, and adjusted market values,  calculated
as fully diluted market value, plus debt outstanding, less cash, as multiples of
calendar  year  1998  earnings  before   interest,   taxes,   depreciation   and
amortization and earnings before interest and taxes. All multiples were based on
closing  stock  prices  on March 5,  1999.  Estimated  net  income  data for the
selected companies were based on research analysts'  estimates and estimated net
income  data for LabOne and  Holdings  were based on internal  estimates  of the
managements of LabOne and Holdings.

         Applying a range of multiples of estimated calendar years 1999 and 2000
net income and calendar year 1998 earnings before interest,  taxes, depreciation
and  amortization  and  earnings  before  interest  and taxes  for the  selected
companies  to  corresponding  financial  data of LabOne  resulted  in an implied
average  reference range for LabOne of approximately  $9.09 to $13.18 per share,
as compared to the blended per share value of the merger consideration of $11.73
based on the closing  stock price of Holdings  common stock on March 5, 1999 and
assuming maximum cash elections are made in the merger.

         Applying a range of multiples of estimated calendar years 1999 and 2000
net income and calendar year 1998 earnings before interest,  taxes, depreciation
and  amortization  and  earnings  before  interest  and taxes  for the  selected
companies to  corresponding  financial  data of Holdings  resulted in an implied
average  reference  range for  Holdings  of  approximately  $11.82 to $18.10 per
share, as compared to the closing stock price of Holdings common stock on

                                       36

March 5, 1999 of $16.06 per share.

Selected Transactions Analysis.

         Using publicly available information, Salomon Smith Barney reviewed the
purchase prices and implied  transaction  value multiples paid or proposed to be
paid in the following  seven selected  transactions  in the  laboratory  testing
services industry:

             Acquiror                                 Target

 o  Quest Diagnostics Incorporated    SmithKline Beecham Clinical Laboratories
 o  Kroll-o'Gara Company              Laboratory Specialists of America, Inc.
 o  Unilab Corporation                Medical Laboratory Network, Inc.
 o  Genzyme Corporation               IG Laboratories, Inc.
 o  National Health Laboratories
    Incorporated                      Roche Biomedical Laboratories
 o  Corning Inc.                      Nichols Institute
 o  National Health Laboratories
    Incorporated                      Allied Clinical Laboratories, Inc.

Salomon Smith Barney compared the purchase prices paid or proposed to be paid in
the selected transactions as a multiple of latest 12 months and one-year forward
earnings per share, and transaction values as a multiple of, among other things,
latest 12 months earnings before interest,  taxes, depreciation and amortization
and earnings  before  interest and taxes.  All multiples were based on financial
information available at the time of the relevant transaction.

         Applying a range of multiples for the selected  transactions  of latest
12 months and one-year  forward earnings per share and latest 12 months earnings
before  interest,  taxes,  depreciation  and  amortization  and earnings  before
<PAGE>

interest  and taxes to  corresponding  financial  data of LabOne  resulted in an
implied average reference range for LabOne of approximately $11.67 to $16.13 per
share, as compared to the blended per share value of the merger consideration of
$11.73  based on the closing  stock price of Holdings  common  stock on March 5,
1999 and assuming maximum cash elections are made in the merger.

Discounted Cash Flow Analysis.

         Salomon Smith Barney performed  separate  discounted cash flow analyses
for each of LabOne and Holdings to estimate the  projected  free cash flows that
LabOne and Holdings could each generate over the fiscal years 1999 through 2002,
based on internal estimates of the managements of LabOne and Holdings. The range
of estimated  terminal values for LabOne and Holdings was calculated by applying
terminal value  multiples of 6.0x to 8.0x to the projected 2002 earnings  before
interest,  taxes,  depreciation  and  amortization.  The cash flows and terminal
values were  discounted to present value using discount rates ranging from 9% to
11%.

         Based on the terminal  multiples and discount  rates  described  above,
this analysis resulted in an implied range for LabOne of approximately $10.25 to
$14.04 per share,  as  compared  to the  blended  per share  value of the merger
consideration  of $11.73  based on the closing  stock  price of Holdings  common
stock on March 5,  1999 and  assuming  maximum  cash  elections  are made in the
merger.

         Based on the terminal  multiples and discount  rates  described  above,
this analysis resulted in an implied range for Holdings of approximately  $15.92
to $21.55 per share,  as compared to the closing stock price of Holdings  common
stock on March 5, 1999 of $16.06 per share.

                                       37

Pro Forma Merger Analysis.

         Salomon Smith Barney analyzed the pro forma effects  resulting from the
merger for calendar years 1999 through 2001, based on internal  estimates of the
managements of Holdings and LabOne. The results of the pro forma merger analysis
suggested  that the merger could be dilutive to Holdings in calendar  years 1999
through 2001. The actual results  achieved by the combined company may vary from
projected results and the variations may be material.

Exchange Ratio Analysis.

     Salomon Smith Barney  performed an exchange  ratio  analysis  comparing the
implied effective exchange ratio in the merger with implied historical  exchange
ratios for Holdings common stock and LabOne common stock. The implied historical
exchange ratios were calculated by dividing the per share price of LabOne common
stock by the per share price of Holdings  common stock over  specified  periods.
Since the  implied  historical  exchange  ratios did not reflect the stock split
contemplated in the merger, Salomon Smith Barney calculated an implied effective
exchange  ratio,  without  giving effect to the stock split,  based upon the pro
forma  equity  ownership  of the  stockholders  of  Holdings  and  LabOne in the
combined  company  upon  consummation  of  the  merger.  The  resulting  implied
effective  exchange ratio of 0.667 was then compared against implied  historical
exchange  ratios for  Holdings  common  stock and LabOne  common  stock over the
one-day, 60-day, three-month, six-month and twelve-month periods ending March 5,
1999. This analysis indicated the following implied  historical  exchange ratios
for these periods:

<PAGE>

                  Period Ending March 5, 1999        Implied Exchange Ratio

                           one-day                            0.677
                           60-day                             0.735
                           three-month                        0.736
                           six-month                          0.771
                           12-month                           0.750

Other Factors.

         In  rendering  its  opinion,  Salomon  Smith  Barney  considered  other
factors, including:

o        historical and projected financial results of Holdings and LabOne;

o        the history of trading prices and volume for Holdings  common stock and
         LabOne common stock and the relationship  between movements in Holdings
         common stock and LabOne  common stock and movements in the common stock
         of the S&P 400 Index;

o        the implied premiums payable in minority stock purchase transactions;

o        selected published analysts' reports on LabOne; and

o        the pro forma ownership of the combined company.

         Pursuant to the terms of Salomon Smith  Barney's  engagement,  Holdings
has  agreed  to pay  Salomon  Smith  Barney  upon  completion  of the  merger an
aggregate fee of $900,000.  Holdings has also agreed to reimburse  Salomon Smith
Barney for travel and other  out-of-pocket  expenses  incurred by Salomon  Smith
Barney in performing its services,  including the fees and expenses of its legal
counsel,  and to  indemnify  Salomon  Smith Barney and related  persons  against
liabilities,  including  liabilities under the federal  securities laws, arising
out of Salomon Smith Barney's engagement.

                                       38



         Salomon Smith Barney has advised  Holdings that, in the ordinary course
of business,  Salomon Smith Barney and its affiliates may actively trade or hold
the  securities  of Holdings and LabOne for their own account or for the account
of customers and, accordingly,  may at any time hold a long or short position in
those  securities.  In  addition,  Salomon  Smith  Barney  and  its  affiliates,
including  Citigroup Inc. and its affiliates,  may maintain  relationships  with
Holdings, LabOne and their respective affiliates.

         Salomon  Smith  Barney  is  an  internationally  recognized  investment
banking firm and was selected by Holdings based on its experience and expertise.
Salomon Smith Barney regularly  engages in the valuation of businesses and their
securities   in   connection   with   mergers   and   acquisitions,   negotiated
underwritings,  competitive bids, secondary distributions of listed and unlisted
securities,  private  placements and valuations for estate,  corporate and other
purposes.




<PAGE>
Opinion of Financial Advisor to the LabOne Special Committee

         The Special Committee  retained U.S. Bancorp Piper Jaffray on April 18,
1997 to provide financial advisory services in connection with a proposed merger
of LabOne with  Holdings and, if requested by the Special  Committee,  to render
its opinion to the Special  Committee  regarding the fairness,  from a financial
point of view, of the  consideration  to be received by the LabOne  Unaffiliated
Stockholders.

         U.S. Bancorp Piper Jaffray  delivered to the Special Committee on March
7, 1999 its oral opinion,  subsequently  confirmed in writing,  that, as of that
date and based upon and subject to the assumptions,  factors and limitations set
forth in the written opinion and described below, the consideration  proposed to
be received by the LabOne Unaffiliated  Stockholders in the proposed merger with
Holdings was fair, from a financial point of view, to those stockholders. A copy
of U.S. Bancorp Piper Jaffray's  written opinion is attached to this Joint Proxy
Statement/Prospectus  as  Appendix C and is  incorporated  into this Joint Proxy
Statement/Prospectus by reference.

         While U.S.  Bancorp  Piper  Jaffray  rendered  its opinion and provided
certain  analyses to the Special  Committee,  U.S. Bancorp Piper Jaffray was not
requested to and did not make any  recommendation to the Special Committee as to
the specific  form or amount of the  consideration  to be received by the LabOne
Unaffiliated  Stockholders  in the  proposed  merger  with  Holdings,  which was
determined through negotiations between Holdings and the Special Committee. U.S.
Bancorp  Piper  Jaffray's  written  opinion,  which  was  delivered  for use and
considered by the Special  Committee,  is directed only to the fairness,  from a
financial  point of view,  of the proposed  consideration  to be received by the
LabOne  Unaffiliated  Stockholders in the proposed merger,  does not address the
value of a share of LabOne  common  stock or  Holdings  common  stock,  does not
address LabOne's  underlying  business decision to participate in the merger and
does not  constitute  a  recommendation  to any LabOne  stockholder  as to how a
stockholder  should  vote  with  respect  to the  merger  or any  election  such
stockholder should make with respect to the consideration offered.

         In  arriving at its  opinion,  U.S.  Bancorp  Piper  Jaffray  reviewed,
analyzed  and relied upon  material  relating  to the  financial  and  operating
condition  and  prospects  of LabOne  and  Holdings  and  material  prepared  in
connection  with the proposed  merger.  These  materials  included,  among other
things:

o    a draft of the merger agreement dated March 7, 1999;

o    publicly available financial, operating and business information related to
     LabOne;

o    publicly  available  financial  and  securities  data related to LabOne;  o
     internal  financial  information of LabOne on a stand-alone  basis prepared
     for financial planning purposes and furnished by LabOne management;

                                       39

o    publicly available financial, operating and business information related to
     Holdings;  o publicly  available  financial and securities  data related to
     Holdings;  and o to the  extent  publicly  available,  financial  terms  of
     certain  acquisition   transactions  involving  acquisitions  of  remaining
     interests  in publicly  traded  companies  by the  entities  holding  their
     controlling interests.

<PAGE>

         In addition, U.S. Bancorp Piper Jaffray had discussions with members of
Holdings'  management  concerning  the financial  condition,  current  operating
results and business outlook for Holdings and LabOne both on a stand-alone basis
and as combined,  Holdings' plans relating to the proposed combined company,  as
well as the amount and timing of the cost savings and related expenses  expected
to result from the merger.  U.S. Bancorp Piper Jaffray also had discussions with
members of  LabOne's  management  regarding  the  financial  condition,  current
operating  results and  business  outlook for LabOne and the  proposed  combined
company.

         In  delivering  its opinion to the Special  Committee on March 7, 1999,
U.S.  Bancorp  Piper  Jaffray  prepared and  delivered to the Special  Committee
written materials  containing various analyses and other information material to
the opinion. Here is a summary of the analyses contained in the materials.

Selected Market Information

         U.S.   Bancorp   Piper   Jaffray   reviewed   certain   stock   trading
characteristics  of LabOne  common stock and Holdings  common  stock,  including
stock price and volume  comparisons for periods ended March 4, 1999. The closing
stock price of LabOne  common  stock on March 4, 1999 was $11.00 and the closing
stock price of Holdings common stock on that date was $16.00.

LabOne Stand-Alone Discounted Cash Flow Analysis

         U.S.  Bancorp Piper Jaffray  performed a discounted  cash flow analysis
for LabOne on a  stand-alone  basis,  in which it estimated the present value of
the projected future cash flows of LabOne using internal financial planning data
prepared by LabOne  management.  U.S. Bancorp Piper Jaffray estimated a range of
theoretical  values for LabOne  based on the net  present  value of its  implied
annual cash flows and a terminal value for LabOne in 2002 calculated  based upon
a multiple of earnings before interest,  taxes, depreciation and amortization ("
EBITDA"). U.S. Bancorp Piper Jaffray applied a range of terminal value multiples
of  forecasted  2002  earnings  before   interest,   taxes,   depreciation   and
amortization  of 5.5x to 7.5x and a range of  discount  rates of 12.5% to 17.5%.
This analysis  yielded a per share equity value of LabOne  ranging from $8.09 to
$12.21 with a midpoint of $10.00 and an aggregate equity value of LabOne ranging
from  $107.7  million  to $162.6  million  with a  midpoint  of $133.2  million.
Combined Company Discounted Cash Flow Analysis

         U.S.  Bancorp  Piper  Jaffray  also  performed a  discounted  cash flow
analysis to calculate a range of theoretical values for the combined entity that
would result from the proposed merger.  U.S.  Bancorp Piper Jaffray  estimated a
range of theoretical  values for the combined  company using internal  financial
planning data prepared by LabOne management.  These values were based on the net
present value of the combined company's projected

                                       40

annual cash flows and a terminal value for the combined company in 2002 based on
a multiple of EBITDA. For purposes of this analysis,  U.S. Bancorp Piper Jaffray
applied LabOne's management's assumptions that the administrative overhead costs
associated with Holdings would cease to exist and that, accordingly,  the future
cash flows of the combined  company  would  remain  essentially  unchanged  from
LabOne's  estimated future cash flows. U.S. Bancorp Piper Jaffray was advised by
Holdings  management that, to the extent that the LabOne Stockholders other than
Holdings elect to receive cash consideration in the merger, the combined company
would borrow the funds necessary to complete the transaction. U.S. Bancorp Piper
<PAGE>

Jaffray  presented this analysis assuming a merger  consideration  consisting of
50% equity and 50% cash and also assuming a merger  consideration  consisting of
100%  equity.  These two  assumptions  represent  the  endpoints of the range of
possibilities of the cash and equity components of the  consideration  under the
terms of the merger  agreement.  U.S. Bancorp Piper Jaffray applied multiples of
forecasted 2002 EBITDA of 5.5x to 7.5x and a range of discount rates of 12.5% to
17.5%.



                                             50% stock/
Per Share Equity Value of Combined Company    50% cash          100% stock
- ------------------------------------------    --------          ----------
Low ...................................... $      7.88       $       8.70
Mid.......................................       10.00              10.69
High......................................       12.47              13.01

                                             50% stock/
Aggregate Equity Value of Combined Company    50% cash          100% stock
- ------------------------------------------    --------          ----------
Low.......................................   $  94,413         $  110,826
Mid.......................................     119,800            136,204
High......................................     149,378            165,771

Pro Forma Analysis

              U.S.  Bancorp  Piper  Jaffray  estimated  the  net  income  of the
combined company after the merger by using LabOne management's estimates of 1999
LabOne net income,  less estimated  goodwill expenses and transaction  financing
costs  resulting  from the  combination  of LabOne and Holdings and estimated by
LabOne  management.  U.S. Bancorp Piper Jaffray  calculated an implied value per
share for stock of the  combined  company by  applying a multiple  of net income
equal to 13.3, the share price to net earnings  multiple for LabOne common stock
as of March 4, 1999. U.S.  Bancorp Piper Jaffray assumed that the share price to
earnings  multiple  for the  operating  company  before the merger would also be
applied to the combined company after the merger. U.S.
                                       41
Bancorp Piper Jaffray performed this analysis assuming a merger consideration of
50% equity and 50% cash and also assuming a merger  consideration  consisting of
100% equity.
                                                 50% stock/
                                                  50% cash       100% stock
                                                  --------       ---------- 
Implied combined company equity
   value (in thousands)(1). . . . . . . . . .  . .$118,526        $126,481
Implied combined company value per
   share (1) . . . . . . . . . . . .  . .     .   $ .10.74        $  10.26

Percentage ownership of combined
   company by LabOne stockholders other than
   Holdings  . . . . . . . . . . . . . . . .  . . . . 11.8%           21.1%
Total stock consideration (in thousands)    . . . $  13,961        $26,657
- ----------------------
(1) Implied  values are calculated  solely for purposes of analysis  integral to
consideration  of fairness from a financial  point of view, and are not intended
to be, and should not be,  relied upon as an estimate of the stock trading value
of shares of the combined company after the merger.

<PAGE>

         U.S.  Bancorp  Piper  Jaffray  compared  the implied  pro forma  market
capitalization   of  the  combined  company  after  the  merger  to  the  market
capitalization of LabOne as of March 4, 1999 and as of the date 30 days prior to
March 4, 1999.

                                                       50% stock/
Market capitalization premium (discount)                50% cash     100% stock
- ----------------------------------------               --------      ----------
Current...............................................    6.8%           (6.8)%
30 days prior.........................................    0.6%          (12.1)%

Dilution Analysis

              U.S.  Bancorp Piper Jaffray  analyzed the  hypothetical  pro forma
effect of the merger on  LabOne's  estimated  earnings  per share for the fiscal
years ending  December 31, 1999  through  2002  assuming a merger  consideration
consisting of 50% equity and 50% cash and also  assuming a merger  consideration
consisting of 100% equity.  In each case the analyses were based on the internal
financial  planning data used for purposes of the discounted cash flow analyses.
In both cases,  U.S. Bancorp Piper Jaffray observed that the merger was expected
to be dilutive to LabOne  stockholders in 1999, with slightly increased dilution
in 2000.

Comparable Company Analysis

              U.S.  Bancorp Piper Jaffray  compared  financial  information  and
valuation ratios of LabOne relative to the corresponding data and ratios of five
publicly   traded   companies   deemed   comparable  to  LabOne  (Bio  Reference
Laboratories,  Laboratory Corporation of America, PharmChem Laboratories,  Quest
Diagnostics,  Inc. and Unilab  Corp.).  This group was selected  from  companies
that:

                                       42

o    are  assigned  the  Standard  Industrial  Classification  Code for  medical
     laboratories;

o    focus on providing laboratory services;

o    are  publicly  traded  companies  with  market  capitalizations  between $9
     million and $1 billion; and

o    have latest twelve month revenue greater than $15 million.

For purposes of its analysis,  U.S. Bancorp Piper Jaffray  calculated the LabOne
company value of $156.1 million (which  consists of market  capitalization  plus
debt less cash).











<PAGE>
The analysis produced multiples of selected valuation data as follows:

                               LabOne              Comparable Companies
                                          -------------------------------------
                                          Mean      Median      High       Low
                                          ----      ------      ----       ---
Company value/latest
  twelve months revenue         1.5x      0.7x       0.6x       1.0x       0.3x
Company value/latest 12
  months EBITDA...........      8.4x      6.6x       6.5x       7.4x       5.7x
Market capitalization/book
  value................         3.3x      2.0x       2.0x       2.7x       1.2x
Market capitalization/latest
  twelve months earnings . .  .15.9x     19.6x      19.6x      35.0x       8.8x
Market capitalization/net
  earnings for calendar year
  1999 (1)...................  13.3x      21.6       21.6       25.0       18.1
     ------------------
     (1)  Calendar  year  1999  net  earnings  data  was not  available  for Bio
     Reference Laboratories, PharmChem Laboratories or Unilab Corp.

Comparable Merger and Acquisition Analysis

              U.S.   Bancorp  Piper  Jaffray  reviewed  merger  and  acquisition
transactions  involving  acquisitions of remaining  interests in publicly traded
subsidiaries by the companies holding the controlling interest. The transactions
reviewed were completed  between January 1, 1994 and February 28, 1998 and had a
transaction value of more than $25 million.  The purpose of this analysis was to
compare  the  price  paid to  public  stockholders  for the  acquisition  of the
remaining  interest in those companies to the proposed  consideration to be paid
to the LabOne Stockholders other than Holdings. U.S. Bancorp Piper Jaffray again
performed this analysis assuming that a merger  consideration  consisting of 50%
equity and 50% cash and also assuming a merger consideration  consisting of 100%
equity. The analysis was based on information obtained from SEC filings,  public
company  disclosures,  press  releases,  industry  and  popular  press  reports,
databases and other sources.  U.S.  Bancorp Piper Jaffray  advised that publicly
disclosed   information   regarding  such   transactions  is  often  incomplete,
especially  for  transactions  involving  acquisitions  of or by privately  held
companies.  The companies  involved in the comparable  transactions are shown in
the following table:

                  Acquiror                                       Target
                  --------                                       ------
The E.W. Scripps Company                     Scripps Howard Broadcasting Company
Ogden Corporation                            Ogden Projects, Inc
Mobile Telecommunication Corporation         Destineer Corporation
Uniholding Corporation                       Unilabs Group Ltd.
Conseco Inc.                                 Bankers Life Holding
National Patent Development                  General Physics Corporation
Corporation
Sears, Roebuck & Co.                         Maxserv Inc.
Enron Corporation                            Enron Global Power & Pipelines LLC
Newmont Mining Corporation                   Newmont Gold Company


                                       43



<PAGE>
This analysis produced multiples of selected valuation as follows:

                                                    Comparable Companies
                            LabOne   LabOne    -------------------------------
                           50%/50%    100%     Mean   Median    Max.      Min.
                           -------    ----     ----   ------    ---       ----
Percent owned prior to 
 transaction . . . . .       80.5%    80.5 %   73.6%   80.0%    93.8%    52.0%
Transaction value 
 (in millions) . . . . . .  $30.5    $26.7    131.7   $94.0   $421.9    $25.7
Premium (discount) one
  day prior to
  announcement . . . . . .    6.8%    (6.8)%    4.4%    1.4%    33.3%    (9.6)%
Premium (discount) four
   weeks prior to
   announcement . . . . . .   0.6%   (12.1)%   11.8%   12.9%    54.2%   (24.5)%

              In  reaching  its  conclusion  as to the  fairness  of the  merger
consideration  and in its  presentation to the Special  Committee,  U.S. Bancorp
Piper  Jaffray did not rely on any single  analysis or factor  described  above,
assign relative weights to the analyses or factors considered by it, or make any
conclusion as to how the results of any given analysis,  taken alone,  supported
its opinion.  The preparation of a fairness opinion is a complex process and not
necessarily susceptible to partial analysis or summary description. U.S. Bancorp
Piper Jaffray  believes that its analyses must be considered as a whole and that
selection  of portions of its  analyses  and of the  factors  considered  by it,
without  considering all of the factors and analyses,  would create a misleading
view of the processes underlying the opinion.

         The  analyses  of  U.S.  Bancorp  Piper  Jaffray  are  not  necessarily
indicative of actual values or future results,  which may be significantly  more
or less favorable than suggested by the analyses. Analyses relating to the value
of  companies  do not purport to be  appraisals  or  valuations  or  necessarily
reflect  the price at which  companies  may  actually  be sold.  No  company  or
transaction  used in any  analysis for  purposes of  comparison  is identical to
LabOne, Holdings or the merger.  Accordingly,  an analysis of the results of the
comparisons is not mathematical;  rather, it involves complex considerations and
judgments  about  differences in the companies to which LabOne and Holdings were
compared and other  factors that could  affect the public  trading  value of the
companies.
 
        For purposes of its opinion, U.S. Bancorp Piper Jaffray relied upon and
assumed the accuracy,  completeness and fairness of the financial statements and
other  information  provided  to it by LabOne  and  Holdings  and did not assume
responsibility for the independent verification of such information. Information
prepared for financial  planning  purposes was not prepared with the expectation
of public  disclosure.  U.S. Bancorp Piper Jaffray relied upon the assurances of
the management of LabOne and Holdings that (1) the information provided to it by
LabOne and  Holdings  was  prepared on a  reasonable  basis,  (2) the  financial
planning data and other business outlook information reflects the best currently
available  estimates  of  management,  and (3)  management  was not aware of any
information or facts that would make the  information  provided to U.S.  Bancorp
Piper Jaffray  incomplete or misleading.  U.S. Bancorp Piper Jaffray also relied
upon  memoranda  and  discussions  with the  Special  Committee  and the Special
Committee's  legal  counsel  concerning  the elements of fairness of price under
applicable  law in the  context  of a merger  such as the  merger of LabOne  and
Holdings.


<PAGE>

         For purposes of its opinion,  U.S.  Bancorp Piper Jaffray  assumed that
the final form of the merger  agreement  would be  substantially  similar to the
last draft it  reviewed,  without  modification  or waiver of material  terms or
conditions  by Holdings or LabOne.  In  addition,  U.S.  Bancorp  Piper  Jaffray
assumed that, in the course of obtaining the necessary  regulatory approvals for
the merger transaction, no restrictions, including any divestiture requirements,
will be imposed that would have a material  adverse  effect on the  contemplated
benefits of the transaction.

         In arriving at its opinion,  U.S. Bancorp Piper Jaffray did not perform
any  appraisals or valuations of any specific  assets or liabilities of Holdings
or LabOne,  and were not furnished with any such appraisals or valuations.  U.S.
Bancorp  Piper  Jaffray  analyzed  LabOne  as a going  concern  and  accordingly
expressed no opinion as to the  liquidation  value of any entity.  U.S.  Bancorp
Piper  Jaffray  expressed no opinion as to the price at which shares of Holdings
common  stock have  traded or at which the shares of the  combined  company  may
trade at any future time. The opinion is based on information  available to U.S.
Bancorp Piper Jaffray and the facts and  circumstances  as they existed and were
subject to evaluation on the date of the opinion.  Events  occurring  after that
date could materially affect the assumptions used in preparing the opinion.

                                       44

     U.S. Bancorp Piper Jaffray was not engaged or authorized to solicit, and it
did not  solicit,  any  other  business  combination  transaction  or  strategic
alternative transaction to the merger.

         U.S.  Bancorp  Piper  Jaffray,  as a customary  part of its  investment
banking business,  evaluates  businesses and their securities in connection with
mergers  and  acquisitions,   underwritings   and  secondary   distributions  of
securities,  private  placements and valuations for estate,  corporate and other
purposes.  The Special Committee  selected U.S. Bancorp Piper Jaffray because of
its expertise,  reputation and familiarity with the healthcare services industry
in general.  In the ordinary course of its business,  U.S. Bancorp Piper Jaffray
and its affiliates may actively trade securities of LabOne or Holdings for their
own accounts or the accounts of their  customers  and,  accordingly,  may at any
time hold a long or short position in those securities.

         Under the terms of the engagement  letter dated April 18, 1997,  LabOne
paid U.S.  Bancorp  Piper Jaffray a  non-refundable  retainer of $25,000 for its
financial  advisory services rendered in connection with the merger  transaction
and agreed to pay an additional $125,000 upon rendering its opinion.  Whether or
not  the  merger  is  consummated,  LabOne  has  agreed  to pay  the  reasonable
out-of-pocket  expenses of U.S.  Bancorp  Piper  Jaffray and to  indemnify  U.S.
Bancorp Piper Jaffray against  liabilities  incurred.  These liabilities include
liabilities under the federal  securities laws in connection with the engagement
of U.S. Bancorp Piper Jaffray by the Special Committee. Accounting Treatment

         The merger will be accounted for as an acquisition of minority interest
using the purchase  method of  accounting.  For the  purposes of  preparing  its
consolidated  financial  statements,  Holdings  will  determine  fair  values of
LabOne's  assets and  liabilities,  and will  record as  goodwill  the excess of
consideration  paid,  plus costs of the  merger,  over the fair value of the net
assets  acquired.   A  final   determination  of  required  purchase  accounting
adjustments,  including  the  allocation  of the  purchase  price to the  assets
acquired and liabilities  assumed based on their  respective fair values has not
yet been made, however,  management does not believe the adjustments to LabOne's
assets or liabilities will be material.  The transaction goodwill created by the
<PAGE>

merger  will  be  expensed  over  a 20  year  period.  The  purchase  accounting
adjustments  made in connection  with the development of the pro forma financial
statements  appearing  elsewhere  in the Joint  Proxy  Statement/Prospectus  are
preliminary  and have been made solely for purposes of developing such pro forma
financial  statements.   For  financial  reporting  purposes,   the  results  of
operations  relating to the acquisition of the minority  interest in LabOne will
be  included  in  the  combined  company's   consolidated  financial  statements
following the effective date of the merger.  See "Unaudited Pro Forma  Condensed
Financial Statements" on page 71.

                     CERTAIN FEDERAL INCOME TAX CONSEQUENCES

General

         The following is a summary of certain  material  United States  federal
income  tax   consequences   of  the  merger  to  Holdings,   LabOne,   Holdings
stockholders, and LabOne stockholders.  However, the discussion does not purport
to be a complete analysis or listing of all of the tax considerations that might
be relevant to any  particular  Holdings  stockholder  or LabOne  stockholder in
making a decision  to vote for or against the merger.  The  discussion  does not
deal with the tax  consequences  of the  merger to  persons  who are  subject to
special  rules  such  as,  for  example,  financial  institutions,   dealers  in
securities,  persons  who  hold  stock  as  part  of a  straddle  or  conversion
transaction,  regulated investment  companies,  insurance companies,  tax-exempt
organizations, and foreign persons. The discussion also does not address the tax
consequences of the merger to any stockholder of Holdings or LabOne who does not
hold that stock as a capital  asset or who acquires  the stock as  compensation.
Moreover,  the  application to the merger of any  applicable  state,  local,  or
foreign tax laws, or any estate or gift tax laws, is not discussed.

         This  discussion  is based on the  Internal  Revenue  Code of 1986 (the
"Code"),  its legislative  history,  applicable final,  temporary,  and proposed
Treasury Regulations, judicial authority, and administrative rulings and

                                       45

practice,  all as currently  existing  and in effect.  There can be no assurance
that the  Internal  Revenue  Service  (the "IRS") and the courts will not take a
contrary view with respect to these tax consequences, and no ruling from the IRS
respecting  these  tax  consequences  has been or will be  sought.  Legislative,
judicial,  or administrative  changes or interpretations may be forthcoming that
could alter or modify the statements and conclusions set forth herein.  Any such
changes  or  interpretations  may be  retroactive  and  could  affect  (possibly
adversely) the tax  consequences of the merger to the  constituent  corporations
and their respective stockholders.

         Holdings  has obtained an opinion  letter from its  counsel,  Lathrop &
Gage L.C.,  regarding the tax  consequences of the merger under current law. The
remainder of this discussion generally reflects the views of Lathrop & Gage L.C.
as set forth in that opinion letter.

Holdings Stockholders

         For  federal  income tax  purposes  the  merger  will have no effect on
Holdings  stockholders.  However,  and  notwithstanding  the preceding sentence,
Holdings  stockholders  who  receive  cash  in  lieu  of  fractional  shares  in
connection  with the stock  split that  precedes  the merger will be treated for
federal  income tax purposes as if they had received the  fractional  shares and
<PAGE>

such shares were then  redeemed by Holdings.  The specific tax  consequences  of
this  treatment  to each such  stockholder  will  depend  on such  stockholder's
individual   circumstances,   although  the  IRS  generally  has  ruled  that  a
stockholder who receives cash that is not separately bargained-for consideration
in  lieu of a  fractional  share  will  recognize  gain  or  loss on the  deemed
redemption of such fractional share in an amount equal to the difference between
the amount of cash received and the  stockholder's  tax basis in such fractional
share.

         Similarly, and also notwithstanding the first sentence of the preceding
paragraph,  Holdings stockholders who receive cash as a result of their exercise
of statutory  dissenters' rights will be treated for federal income tax purposes
as if their  Holdings  stock were redeemed by Holdings.  This deemed  redemption
will be treated as a sale or exchange  of a  dissenting  stockholder's  Holdings
stock,  and thus will  trigger  capital  gain or loss in an amount  equal to the
difference  between the amount of cash received and the  stockholder's tax basis
in  such  stock,   unless  the  stockholder  is  treated   pursuant  to  certain
constructive  ownership  rules of the Code as being the owner of Holdings  stock
that is actually owned by another related person. If a dissenting stockholder is
deemed to  continue  to own  Holdings  stock after the merger by reason of these
constructive  ownership rules, then the deemed redemption of such  stockholder's
Holdings  stock will be treated  either as a sale or exchange of such stock (and
thus will trigger capital gain or loss) or as a dividend, in accordance with the
deemed   redemption   rules  discussed  below  that  are  applicable  to  LabOne
stockholders  who receive both  combined  company stock and cash in exchange for
their LabOne stock pursuant to the merger.

         Because the specific tax consequences of the merger and the stock split
that  precedes  the  merger to  Holdings  stockholders  who  exercise  statutory
dissenters'  rights or receive cash in lieu of fractional  shares will depend on
their  individual  circumstances,  they should  consult  with their tax advisors
regarding the specific tax consequences to them of these events.

LabOne Stockholders (Other Than Holdings)

         With respect to LabOne  stockholders  (other than  Holdings) the merger
will qualify for federal  income tax purposes as a tax-free  reorganization  and
both  Holdings and LabOne will be parties to such  reorganization.  Accordingly,
the principal federal income tax consequences of the merger to such stockholders
are as follows.

         No gain or loss will be recognized by LabOne  stockholders  who receive
only combined  company stock in exchange for their LabOne stock  pursuant to the
merger.

         LabOne  stockholders  who receive some combined  company stock and some
cash in exchange for their LabOne  stock  pursuant to the merger will  recognize
gain, but not loss, on such exchange. The amount of the gain

                                       46

recognized by such a  stockholder  will be equal to the lesser of: (1) the total
gain realized by such stockholder on the exchange (i.e., the value of the merger
consideration  received by such  stockholder,  including  both cash and combined
company  stock,  less such  stockholder's  tax basis in the LabOne stock that is
given up in the exchange);  or (2) the amount of cash received. The gain that is
realized  by a  LabOne  stockholder  may be  capital  gain or  ordinary  income,
depending on the stockholder's individual circumstances.
<PAGE>

         For  purposes  of  determining  whether  the gain  realized  by  LabOne
stockholders  who receive some combined  company stock and some cash in exchange
for their  LabOne  stock  pursuant  to the  merger is capital  gain or  ordinary
income,  such  stockholders  will be treated as if they  exchanged  all of their
LabOne stock for combined  company  stock and  Holdings  immediately  redeemed a
portion of such  combined  company stock for cash.  This deemed  redemption of a
LabOne  stockholder  will be treated as a sale or  exchange of the stock that is
deemed to have been redeemed, and thus will trigger capital gain or loss, if the
deemed redemption is considered to be "not essentially equivalent to a dividend"
(within the  meaning of the Code) or if it is  considered  to be  "substantially
disproportionate"  with  respect to the  stockholder  (within the meaning of the
Code); otherwise the cash received will be treated as a dividend. In determining
whether the deemed redemption is not essentially  equivalent to a dividend or is
substantially disproportionate, certain constructive ownership rules of the Code
generally  apply pursuant to which a stockholder is treated as owning stock that
is actually owned by certain other related parties.

         A deemed  redemption  of  Holdings  stock  treated  as held by a LabOne
stockholder  who receives some combined  company stock and some cash in exchange
for LabOne  stock  will be  considered  to be not  essentially  equivalent  to a
dividend  if the deemed  redemption  results in a  meaningful  reduction  in the
stockholder's  interest  in  Holdings.  In this  regard,  the IRS has  taken the
position  that  the  "not  essentially  equivalent  to a  dividend"  test may be
satisfied with respect to a redemption of a portion of a stockholder's  stock in
a corporation if the  stockholder's  percentage stock ownership  interest in the
corporation  is minimal,  the  stockholder  exercises no control over  corporate
affairs,  and there is a meaningful  reduction in the  stockholder's  percentage
stock ownership.

         A deemed  redemption  of  Holdings  stock  treated  as held by a LabOne
stockholder  who receives some combined  company stock and some cash in exchange
for LabOne stock will be considered to be  substantially  disproportionate  with
respect to the stockholder if the stockholder  actually and constructively  owns
less than 50 percent of the voting power of the outstanding Holdings stock after
the deemed  redemption  and if the  percentage  of Holdings  stock  actually and
constructively  owned by such  stockholder  after the deemed  redemption is less
than 80 percent of the percentage of Holdings stock actually and  constructively
owned by such stockholder immediately before the deemed redemption.

         As indicated in the foregoing discussion, the character of the gain, if
any,  recognized by LabOne stockholders who receives some combined company stock
and some cash in exchange for their LabOne stock  pursuant to the merger depends
on the  stockholders'  individual  circumstances.  Therefore,  such stockholders
should  consult with their tax advisors  regarding the character of the gain, if
any, that is recognized by them as a result of such event.

         LabOne  stockholders who receive only cash in exchange for their LabOne
stock  pursuant  to the merger  will  likely be treated as if they had  received
combined  company  stock in the merger and such stock was  redeemed  by Holdings
immediately  thereafter,  although  the law in this  regard is unclear  and such
stockholders  may be treated as if they had sold their LabOne stock to Holdings.
A deemed redemption may be treated as a sale or exchange of Holdings stock (with
the  recognition  of capital  gain or loss) or it may be treated as a  dividend,
depending on the  stockholder's  individual  circumstances.  A deemed sale would
cause the recognition of capital gain or loss.



<PAGE>

         A deemed redemption of Holdings stock held by a LabOne  stockholder who
receives  only cash in  exchange  for LabOne  stock will be treated as a sale or
exchange of such stock,  and thus will trigger capital gain or loss in an amount
equal  to  the  difference   between  the  amount  of  cash  received  and  such
stockholder's tax basis

                                       47

in such  stock,  unless the  stockholder  is treated  pursuant  to  constructive
ownership  rules of the Code as  being  the  owner  of  Holdings  stock  that is
actually owned by another related person. If such a LabOne stockholder is deemed
to  continue  to own  Holdings  stock  after  the  merger  by  reason  of  these
constructive  ownership rules, then the deemed redemption either will be treated
as a sale or exchange of such stock (and thus will trigger capital gain or loss)
under the "not  essentially  equivalent  to a  dividend"  and  "disproportionate
redemption" rules discussed above or it will be treated as a dividend.

         Because  of the  uncertainty  in the law,  and  because  of the  LabOne
stockholders' varying  circumstances,  LabOne stockholders who receive only cash
in exchange for their LabOne stock  pursuant to the merger  should  consult with
their tax advisors regarding the tax consequences to them of such event.

         The tax basis of the shares of  combined  company  stock  received by a
LabOne  stockholder  pursuant  to the  merger  will  equal the tax basis of such
stockholder's  shares of LabOne stock exchanged in the merger,  increased by the
amount of any gain recognized by such stockholder and decreased by the amount of
any cash received by such stockholder. The holding period for shares of combined
company  stock  received  by a LabOne  stockholder  pursuant  to the merger will
include  the  holding  period for the shares of LabOne  stock  exchanged  in the
merger.

Holdings

         With  respect  to  Holdings  the  merger  will  qualify  as a  tax-free
liquidation of LabOne.  The principal  federal income tax  consequences  of such
qualification are as follows.

         No gain or loss will be  recognized  by Holdings upon the receipt by it
of all of LabOne's property and the cancellation of its LabOne stock pursuant to
the merger or as a result of the stock split that precedes the merger.  However,
and  notwithstanding  the preceding  sentence,  Holdings will at the time of the
merger  recognize  any gain or loss that is  realized  by it upon its receipt of
property  from  LabOne  in  satisfaction  of any debt that is then owed to it by
LabOne.  Also, and again  notwithstanding  the first sentence of this paragraph,
Holdings may at the time of the merger  recognize  income from the  discharge of
indebtedness if any indebtedness is then owed by it to LabOne.

         Holdings'  initial tax basis in each of the  properties  received by it
from  LabOne  pursuant  to the  merger  will be the same as  LabOne's  tax basis
therein immediately before the merger. Holdings' holding period for the property
received  by it from LabOne  pursuant to the merger will  include the period for
which the property was held by LabOne.






<PAGE>
LabOne

         With   respect  to  LabOne  the  merger  will  qualify  as  a  tax-free
liquidation of LabOne. Accordingly, no gain or loss will be recognized by LabOne
for  federal  income  tax  purposes  upon the  distribution  by it of all of its
property to Holdings pursuant to the merger.

         THE FOREGOING DISCUSSION IS FOR GENERAL INFORMATION ONLY AND IS NOT TAX
ADVICE.  ACCORDINGLY,  EACH  HOLDINGS  STOCKHOLDER  WHO  MAY  WISH  TO  EXERCISE
DISSENTERS'  RIGHTS,  AND EACH  LABONE  STOCKHOLDER,  SHOULD  CONSULT  WITH SUCH
STOCKHOLDER'S  TAX  ADVISOR  AS TO  THE  PARTICULAR  TAX  CONSEQUENCES  TO  SUCH
STOCKHOLDER OF THE MERGER,  INCLUDING THE APPLICABILITY AND EFFECT OF ANY STATE,
LOCAL, OR NON-UNITED  STATES LAWS AND ANY PROSPECTIVE  CHANGES IN APPLICABLE TAX
LAWS.

Interests of Certain Persons in the Merger

          In considering  the  recommendations  of the LabOne Board of Directors
     and the Holdings Board of

                                       48

Directors with respect to the merger,  stockholders should be aware that certain
members of the Board of  Directors  of LabOne,  certain  executive  officers  of
LabOne,  certain  members of the Board of  Directors  of  Holdings  and  certain
executive  officers  of  Holdings  have the  following  interests  in the merger
separate  from and in addition to their  interests  as LabOne  stockholders  and
Holdings stockholders, respectively.

         Composition  of the Combined  Company  Board.  In  connection  with the
merger, nine of the current directors of LabOne, will be elected as directors of
the combined company at the time of the merger.  All of the current directors of
Holdings will concurrently resign their positions as directors and will cease to
have any continuing office with the combined company.

         Director Compensation After the Merger. Directors who are not employees
of the  combined  company  will receive the same  compensation  as  non-employee
directors received from LabOne prior to the merger,  subject to change from time
to time by the Board of Directors of the combined company. Directors who are not
employees of the combined  company will receive an annual retainer fee of $5,000
in cash  and a grant of a number  of  shares  of  common  stock of the  combined
company having a value equal to $10,000,  plus $500 for each Board and committee
meeting  attended  and  reimbursement  for  reasonable   expenses  in  attending
meetings.

         Richard S.  Schweiker,  who will serve as a  Director  of the  combined
company,  has agreed to attend  national  meetings of insurance  underwriters on
behalf of the combined  company and to make selected  contacts in furtherance of
its business,  for which  services the combined  company will pay Mr.  Schweiker
additional fees of $30,000 annually.

         Adjustments  to  Holdings  Stock  Options.  Each of the  four  Holdings
directors who will cease to hold office at the effective time of the merger hold
options to purchase  15,000  shares of the  Holdings  common stock at a price of
$26.50 per share.  The options  were granted on  September  17, 1997,  for terms
expiring  on the  earlier  of (i)  September  17,  2007,  (ii) 90 days after the
directors  term as  director  terminates  other  than by death or (iii) one year
after death if the death  occurs  during or within 90 days after the term of the
director  terminates.  The options  become  exercisable  in three  equal  annual
<PAGE>

installments  commencing on each of the first three anniversaries of the date of
grant or in full  upon  certain  change-in-control  events  or in the event of a
merger which  contemplates  that the  directors  term will cease  following  the
merger, as is the case in the proposed merger.  During August 1998, and based on
the  recommendation  of the  compensation  committee of the Holdings Board,  the
Board of  Directors  of  Holdings  amended  the  options  so that they would not
automatically expire 90 days following a termination of director status due to a
merger.  Adoption of the merger  agreement  will effect a  ratification  of that
Board action. In addition,  the merger agreement  provides that at the effective
time the options will be adjusted so that each option to purchase  15,000 shares
for $26.50 per share will  become an option to purchase  22,500  shares at a per
share price of $17.66 per share.  See  "Management  of Holdings -- Report of the
Compensation Committee" on page 114.

     Payments Upon  Termination of Employment  Agreements.  The merger agreement
also provides that the  employment of all officers of Holdings will terminate at
the  effective  time of the  merger.  This  will  effect  a  termination  of the
employment agreements without cause of each of those officers so as to trigger a
requirement of Holdings to pay Mr. Jacobs and Mr.  Fitzwater their base salaries
for a period of two  years,  and Ms.  McCoy her base  salary for a period of one
year,  following  the date of  termination.  The annual  base  salary of each of
Messrs.  Jacobs and  Fitzwater  is $100,000  and the base salary of Ms. McCoy is
$70,000.

         Indemnification. The merger agreement obligates the combined company to
provide indemnification and to advance expenses to persons who were officers and
directors of LabOne or Holdings prior to the effective time.  These  obligations
will  survive  the  merger  and will  remain in force  for six  years  after the
effective time. Further,  the merger agreement obligates the combined company to
provide directors and officers liability  insurance for a period of six years to
persons who were  directors  or officers on March 7, 1999 and who cease to be so
prior to or at the effective  time.  The  obligation of the combined  company to
indemnify directors and officers includes the

                                       49

obligation  to indemnify for  liabilities  arising out of the merger or the
merger agreement.

         LabOne also has  corporate  reimbursement  and  directors  and officers
liability insurance which indemnifies directors and officers against claims made
against them during the policy period for wrongful  acts in their  capacities as
directors and officers of LabOne.  This insurance has been recently  modified to
eliminate a previous  exclusion  of coverage  for claims  against  such  persons
brought  by or on  behalf  of  Holdings  or its  stockholders  by  reason of any
proposed or completed merger of LabOne and Holdings.

Dissenters' Rights.

         Under The Delaware General Corporation Law, LabOne stockholders have no
dissenters' rights with respect to the Merger.

         Under Section  351.455 of The General and Business  Corporation  Law of
Missouri,  Holdings  stockholders  who do not vote in favor of  adoption  of the
merger  agreement and who follow the procedures  summarized  below will have the
right to  dissent  from and  obtain  payment  in cash of the fair value of their
shares of Holdings common stock (as of the day prior to the day of the Holding's
meeting) in the event of the consummation of the merger.  However,  Holdings may
<PAGE>

elect to terminate  the merger  agreement if holders of more than 5% of Holdings
outstanding  shares exercise  dissenters'  rights.  No holder of Holdings common
stock  dissenting from the merger will be entitled to shares of combined company
common stock or any dividends or other distributions unless and until the holder
fails to perfect  or  effectively  withdraws  or loses  such  holder's  right to
dissent from the merger agreement.

         The following is a summary of the procedures  which must be followed by
any  stockholder  who wishes to dissent and demand payment for his or her shares
in the event of consummation of the merger.  The text of Section 351.455,  which
contains  the  applicable  procedures,  is set forth in Appendix D to this Joint
Proxy Statement/Prospectus. Holders of Holdings common stock receiving cash upon
exercise  of  dissenters'  rights  may  recognize  gain for  federal  income tax
purposes. See "Certain Federal Income Tax Consequences" on page 45.

         A Holdings  stockholder  may  assert  dissenters'  rights  only if such
stockholder:

(i)  delivers to Holdings prior to or at the Annual Meeting a written  objection
     to the merger  agreement.  Such objection  should be delivered or mailed in
     time to arrive before the Annual Meeting to Lab Holdings,  Inc.,  5000 West
     95th Street, Suite 260, Shawnee Mission, Kansas 66207, Attention: Corporate
     Secretary.  Such a  written  objection  must be made in  addition  to,  and
     separate  from,  any proxy or other  vote  against  adoption  of the merger
     agreement.  Neither a vote against, a failure to vote for, or an abstention
     from  voting will  satisfy  the  requirement  that a written  objection  be
     delivered to Holdings before the vote is taken.  Unless a stockholder files
     the  written  objection  as  provided  above,  he or she  will not have any
     dissenters' rights of appraisal; and

(ii) does not vote in favor of adoption of the merger agreement; and

(iii)delivers to the combined  company  within  twenty days after the  effective
     time of the merger a written demand for payment of the fair value of his or
     her  shares  of  Holdings  common  stock as of the day prior to the date on
     which the vote for  adoption  of the merger  agreement  was taken and which
     demand  includes a  statement  of the number of shares of  Holdings  common
     stock  owned.  Such  demand  must be mailed or  delivered  to the  combined
     company at 10101 Renner Boulevard,  Lenexa, Kansas 66219,  Attn:__________.
     Any  stockholder  who fails to make a written demand for payment within the
     twenty-day period after the effective time will be conclusively presumed to
     have  consented  to the  merger  agreement  and will be bound by the  terms
     thereof.  Neither a vote  against  the  merger  agreement  nor the  written
     objection referred to

                                       50

     in   (i)  satisfies  the  written  demand  requirement  referred to in this
     clause (iii).

         A  beneficial  owner of shares of Holdings  common stock who is not the
record owner may not assert dissenters' rights. If the shares of Holdings common
stock  are  owned of  record  in a  fiduciary  capacity,  such as by a  trustee,
guardian or custodian, or by a nominee, the written demand asserting dissenters'
rights must be executed by the  fiduciary or nominee.  If the shares of Holdings
common stock are owned of record by more than one person,  as in a joint tenancy
or tenancy in  common,  the demand  must be  executed  by all joint  owners.  An
authorized agent,  including an agent for two or more joint owners,  may execute
<PAGE>

the demand for a  stockholder  of record;  however,  the agent must identify the
record owner and expressly  disclose the fact that, in executing the demand,  he
is acting as agent for the record owner.

         If within thirty days of the  effective  time the value of a dissenting
stockholder's  shares of  Holdings  common  stock is  agreed  upon  between  the
stockholder and the combined company,  the combined company will make payment to
the stockholder within ninety days of the effective time, upon the stockholder's
surrender  of his or her  certificates.  Upon payment of the agreed  value,  the
dissenting  stockholder will cease to have any interest in such shares or in the
combined company.

         If the dissenting  stockholder and the combined company do not agree on
the fair value of the shares  within  thirty  days of the  effective  time,  the
dissenting stockholder may, within sixty days thereafter, file a petition in any
court of  competent  jurisdiction  within  Cole  County,  Missouri  asking for a
finding  and a  determination  of the fair value of the shares.  The  dissenting
stockholder is entitled to judgment  against the combined company for the amount
of such fair  value as of the day prior to the date on which such vote was taken
adopting the merger  agreement,  together with  interest  thereon to the date of
judgment.  The  judgment  is  payable  only  upon  and  simultaneously  with the
surrender to the combined company of the Holdings certificates representing said
shares. Upon payment of the judgment,  the dissenting stockholder shall cease to
have  any  interest  in such  shares  or in the  combined  company.  Unless  the
dissenting  stockholder  will file such petition within the time herein limited,
such  stockholder  and all  persons  claiming  under  such  stockholder  will be
conclusively  presumed to have adopted and ratified  the merger  agreement,  and
will be bound by the terms thereof.

         The right of a dissenting stockholder to be paid the fair value for his
or her shares will cease if the stockholder  fails to comply with the procedures
of Section 351.455 or if the merger agreement is terminated for any reason.

         The preceding is qualified in its entirety by the text of the appraisal
provisions  of Section  351.455  which is  attached  hereto as Appendix D and is
incorporated herein by reference.

         It is a condition to the merger than the holders of not more than 5% of
Holdings' outstanding common stock exercise their dissenters' rights.

Amendments to Holdings' Articles of Incorporation and Bylaws

         Holdings is the combined  company in the merger.  The merger  agreement
provides that Holdings'  Articles of  Incorporation  and By-Laws will be amended
and restated in certain  respects as of the effective time of the merger.  These
changes  are  reflected  in the  Articles  of  Incorporation  and  Bylaws of the
combined company attached as Appendices __ and __ to the Merger  Agreement.  The
principal changes are described below.

         Articles of Incorporation.

     o    The name of the corporation will be changed to LabOne, Inc.

     o    The  authorized  common stock will be  increased  from  24,000,000  to
          40,000,000 shares to match

                                       51

<PAGE>

          the  number of currently authorized common stock of LabOne.

     o    The  par  value  of  the  common  stock  and  preferred  stock  of the
          corporation will be reduced from $1.00 par value per share to $.01 par
          value per share.

     o    A  "fair  price"   provision  which  waives  the  requirement  of  80%
          stockholder  approval  on  certain  business  combinations   involving
          certain related  persons if the business  combination is approved by a
          two-thirds vote of continuing  directors at a meeting at which (before
          giving effect to the Articles Amendment described on page 51) a quorum
          of at least  nine  continuing  directors  are  present,  is changed to
          require a  two-thirds  vote of all  continuing  directors  in order to
          waive  the  80%  stockholder  approval  requirement.  The  fair  price
          provision is also  changed to expand the universe of Bylaw  provisions
          which must be retained in a merger with a subsidiary  in order for the
          merger not to be considered a business combination.

     o    A  provision  requiring  the  affirmative  vote of at least 80% of the
          outstanding  shares  entitled  to vote in order to  amend,  modify  or
          repeal certain  provisions of the Articles of  Incorporation or Byaws,
          unless  the  Board  of  Directors  unanimously   recommends  any  such
          amendment,  is changed (a) to expand the  sections of the Bylaws which
          may not be amended  without 80% stockholder  approval,  (b) to require
          80% stockholder approval to adopt provisions  inconsistent  therewith,
          and (c) to eliminate such 80% stockholder  approval requirement if any
          such  amendment  is  favorably  recommended  by only a majority of the
          entire Board of Directors.  The additional provisions of the Bylaws to
          be subject to such 80% stockholder approval requirements for amendment
          include:

     o    a provision specifying the officers who may preside over stockholders'
          meetings  and  giving  the  presiding  officer  authority  to  adjourn
          stockholders'  meetings from time to time; o a provision  limiting the
          business to be conducted at  stockholders'  meetings to matters stated
          in the notice of such meetings or otherwise  properly  brought  before
          the meetings;  o a provision stating that the property and business of
          the  corporation  shall be  controlled  and  managed  by the  Board of
          Directors;   o  provisions   providing  for  the  indemnification  and
          limitation  of liability of  directors,  officers and employees of the
          corporation,  or  persons  who  are  serving  at  the  request  of the
          corporation as directors,  officers or employees of other enterprises;
          and  o  provisions   establishing   advance   notice   procedures  for
          stockholders  wishing to nominate candidates for election as directors
          or to bring other  proposals  before  annual  stockholders'  meetings.
          Bylaws

     o    A new  provision  will be  added  to  require  advance  notice  of all
          stockholders' nominations for election as directors and to bring other
          proposals  not  sponsored  by the  Board of  Directors  before  annual
          stockholders' meetings. Stockholders will be required to deliver prior
          written  notice of any director  nomination  or other  proposal to the
          Secretary  of the  corporation  no later than  ninety  days before the
          meeting date or ten days after the meeting date is publicly announced,
          whichever  is later.  Such  notice  must be  accompanied  by  specific
          information of the sort needed by the corporation for inclusion in any
          proxy materials  prepared in accordance  with the Securities  Exchange
          Act of 1934.  If the  stockholder's  nomination  or proposal is deemed
<PAGE>

          incomplete by the

                                       52

     Boardof Directors or a designated  committee thereof,  the stockholder will
          be  notified  and  given  five  days,  or  such  shorter  time  as may
          reasonably be deemed  appropriate  by the Board or committee,  to cure
          the deficiency.  If the Board or designated  committee does not act on
          the stockholder  nomination or proposal  before the meeting,  then the
          presiding officer of the meeting will make the  determination  whether
          the request is in proper form for consideration at the meeting.

     o    The right of the holders of four-fifths of the  outstanding  shares of
          the  corporation  entitled  to vote to  call a  special  stockholders'
          meeting will be eliminated.

     o    The right of a single  director to call a special meeting of the board
          will be  eliminatedsuch a meeting may be called by specified  officers
          or a majority of the entire board.

     o    A  provision  that no person  shall be  eligible  for  election  as an
          outside  director of the corporation  after he has attained the age of
          seventy-five will be eliminated.

     o    A provision  allowing one or more directors to call a special  meeting
          of the Board of Directors  will be changed to permit a majority of the
          entire Board to call a special Board of Directors' meeting.

     o    A provision  is added  specifying  the  officers  who may preside over
          stockholders'  meetings and giving the presiding  officer authority to
          adjourn stockholders' meetings from time to time.

     o    A  provision  is  added  limiting  the  business  to be  conducted  at
          stockholders'  meetings  to  matters  stated  in the  notice  of  such
          meetings or otherwise properly brought before the meetings.

     o    A provision  is added  empowering  the Board of Directors to determine
          which class of  directors  will have a number of  directors  different
          from the other  classes  if the  number  of  directors  is not  evenly
          divisible by three.

Certain  Possible  Anti-takeover  Effects of the  Amendments  to the Articles of
Incorporation and Bylaws of the Combined Company.

         The merger is not being  proposed in order to prevent any known attempt
to acquire control of Holdings by means of a merger, tender offer,  solicitation
in opposition to management  or otherwise,  or to obtain  representation  on the
Holdings  or  LabOne  Boards  of  Directors.  It is not the  policy of LabOne or
Holdings to discourage  legitimate offers to enhance stockholder value. However,
certain of the  amendments  to the Articles of  Incorporation  and Bylaws of the
combined  company  may have an  anti-takeover  effect as  described  below.  The
proposed  amendments to the Articles of Incorporation and Bylaws of the combined
company are not part of a plan to adopt a series of such amendments.

         Increase in  Authorized  Shares.  As described  above,  the  authorized
shares of common stock of the  combined  company will be increased in the merger
from  24,000,000  shares to  40,000,000  shares.  LabOne and Holdings  agreed to
increase the authorized  shares of common stock to 40,000,000 shares so that the
<PAGE>

number of  authorized  shares of common stock of the combined  company after the
merger  would equal the number of  authorized  shares of common  stock of LabOne
prior to the merger  (although  the ratio of  authorized  shares to  outstanding
shares  is   expected  to  decline  as  a  result  of  the  merger  and  related
transactions).  This increase in the number of authorized shares is not intended
as an anti -takeover device,  and there are currently no plans,  understandings,
agreements  or  arrangements  concerning  the issuance of  additional  shares of
capital  stock of the  combined  company,  other  than  shares  to be  issued in
connection  with the merger and the stock  split,  pursuant to employee  benefit
plans and upon the exercise of warrants  issued by LabOne that are being assumed
by the combined  company in the merger.  However,  the increase in the number of
authorized shares could enable the

                                       53

board  of  directors  of the  combined  company  to  render  more  difficult  or
discourage a hostile transaction to take control of the combined company. In the
course of exercising their fiduciary responsibilities to stockholders, the board
of directors could issue additional shares without stockholder approval in order
to increase the voting power of parties friendly to the board of directors or to
dilute the voting  and other  rights of the  proposed  acquiror.  The  3,000,000
authorized but unissued shares of combined  company  preferred stock may be also
issued by the board of directors for the same purposes.

         Advance Notice of Stockholder  Nominations and Proposals.  The combined
company's  Bylaws will contain a new provision  establishing  an advance  notice
procedure  for  stockholders  wishing to  nominate  candidates  for  election as
directors or bring other business before an annual meeting of  stockholders.  By
requiring advance notice of nominations and stockholder proposals, the new Bylaw
provision will provide a more orderly  procedure for conducting  annual meetings
of stockholders  and will provide the Board of Directors with the opportunity to
inform  stockholders  prior to such meetings,  to the extent deemed necessary or
desirable by the Board of Directors,  of the qualifications of such nominees and
of any business to be conducted at such  meetings.  Although the advance  notice
provisions do not give the board of directors of the combined  company any power
to approve or disapprove stockholder nominations or proposals, they may have the
effect of  precluding or delaying a contest for the election of directors or the
consideration  of  stockholder  proposals if the  designated  procedures are not
followed.  Such  provisions may have the effect of  discouraging  or deterring a
third party from  conducting a solicitation of proxies to elect its own slate of
directors  or  to  approve  its  own   proposal,   without   regard  to  whether
consideration  of such  nominees or proposals  might be harmful or beneficial to
the combined company or its stockholders.

         Special Stockholders'  Meetings.  The combined company's Bylaws will be
amended  to  eliminate  the  right  of  the  holders  of  four-fifths  (4/5)  of
outstanding  shares to call a special meeting of stockholders.  Special meetings
may be called only by a majority of the entire board of  directors.  The purpose
of this amendment is to avoid the time,  expense and  disruption  resulting from
holding special meetings of stockholders in addition to annual meetings,  unless
the special  meetings  are  approved by the Board of  Directors.  However,  this
amendment  may have the effect of  delaying a change in control of the  combined
company or  delaying  the  presentation  to the  stockholders  of a  stockholder
proposal favored by the holders of four-fifths (4/5) of the outstanding shares.

         Existing  Provisions  of the  Articles  of  Incorporation  and  Bylaws.
Certain  existing  provisions found in Holdings'  articles of incorporation  and
by-laws  that  also will be  included  in the  combined  company's  Articles  of
<PAGE>

Incorporation  and  By-Laws  might have the effect of  discouraging  a potential
acquiror from attempting a takeover of the combined  company on terms which some
stockholders  might  favor,  and might reduce the  opportunity  for the combined
company's  stockholders to sell shares at a premium over then-prevailing  market
prices.  These include  provisions  relating to a classified board of directors,
removing and  appointing  directors,  "blank-check  preferred  stock",  business
combinations  and charter and by-law  amendments.  See  "Description Of Combined
Company  Capital  Stock - Certain  Provisions  of Combined  Company  Articles of
Incorporation and Bylaws That May Have an Anti-takeover Effect" on page 102.

Resales of Common Stock

         The shares of Holdings common stock to be issued to the stockholders of
LabOne in the merger are being  registered  under the Securities Act pursuant to
the registration statement of which this Joint Proxy  Statement/Prospectus  is a
part.  However,  because some stockholders of LabOne are or may be affiliates of
LabOne, such persons will not be able to resell the common stock of the combined
company  received in the merger with respect to their LabOne  shares  unless the
common  stock of the  combined  company  is  registered  for  resale  under  the
Securities  Act, is sold in compliance  with an exemption from the  registration
requirements  of the Securities Act or is sold in compliance with Rule 145 under
the Securities Act.

         Under Rule 145 the sale of common stock  acquired by LabOne  affiliates
with  respect to their  LabOne  shares in the merger  will be subject to certain
restrictions. Such persons may sell common stock of the combined

                                       54

company  under  Rule 145 if (i) the  combined  company  has  filed  all  reports
required  to be filed by  Section  13 or 15(d) of the  Exchange  Act  during the
preceding 12 months, (ii) the common stock is sold in a "broker's  transaction,"
or in  transactions  directly with a market  maker,  and (iii) such sale and all
other  sales  made by such  person  within  the  preceding  three  months do not
collectively  exceed  the  greater  of (x) 1% of the  outstanding  shares of the
common stock of the combined  company and (y) the average  weekly trading volume
of that common  stock on the Nasdaq  Stock Market  during the  four-week  period
preceding the sale.

         One year following the merger and if such person is not an affiliate of
the  combined  company,  the person may sell the  common  stock of the  combined
company under Rule 145 without  complying with the requirements  described above
if the combined company has filed all reports required to be filed by Section 13
or 15(d) of the Exchange Act during the preceding 12 months. Two years following
the merger,  if such person is not an affiliate of the combined  company and has
not been an affiliate for at least three months,  the person may sell the common
stock of the combined  company  without  complying with any of the  requirements
described above.

         Persons who may be deemed to be affiliates of LabOne generally  include
individuals or entities  which  control,  are controlled by, or are under common
control with, LabOne and may include certain  officers,  directors and principal
stockholders of LabOne and Holdings. The merger agreement requires LabOne to use
its commercially reasonable efforts to cause each of its affiliates to execute a
written agreement  pursuant to which each acknowledges that it is subject to the
provisions of Rule 145(d).


<PAGE>
                              THE MERGER AGREEMENT

General

         The merger  agreement  provides for the merger of LabOne into Holdings,
with  Holdings  continuing  as the  surviving  corporation.  This section of the
document describes material  provisions of the merger agreement that is appended
to this document as Appendix A. Because the description of the merger  agreement
is a summary,  it does not contain all the information  that may be important to
you. You should read  carefully the entire copy of the merger  agreement  before
you decide how to vote.

Pre-Merger Stock Split

         The merger agreement  provides that, prior to the effective time of the
merger, the Board of Directors of Holdings will declare a stock split payable as
a dividend so that,  immediately  prior to the effective  time,  each issued and
outstanding share of Holdings common stock shall be automatically converted into
1.50 shares of Holdings  common  stock.  The dividend will be  conditioned  upon
satisfaction  of all  conditions  to the merger  and will be  payable  after the
merger in common stock of the combined company.

Closing of the Merger; Effective Time of the Merger

         Closing of the Merger. Unless the parties agree otherwise,  the closing
of the merger will take place on the business day on which there is satisfaction
(or  waiver) of the latest to occur of all of the  closing  conditions.  This is
expected  to occur  shortly  after  the  approval  of the  stockholders  of both
companies at the annual meetings.

         Effective  Time of the Merger.  At the closing of the merger,  Holdings
will  file  articles  of  merger  with the  Missouri  Secretary  of State  and a
certificate  of merger with the  Secretary of State of Delaware.  The  effective
time of the  merger  will be when  the  Missouri  Secretary  of  State  issues a
certificate of merger attaching to it the articles of merger.



                                       55
Effect of Merger

     Surviving  Corporation.  Holdings will be the surviving  corporation in the
merger. However,  pursuant to the merger agreement,  its name will be changed to
LabOne, Inc.

         Articles  and  Bylaws.  The  Articles  of  Incorporation  and Bylaws of
Holdings as in effect immediately prior to the effective time will be amended to
read as set forth in Exhibits B and C,  respectively,  to the merger  agreement.
See "The Proposed Merger - Amendments to Holdings' Articles of Incorporation and
Bylaws" on page 51 and  "Description of Combined  Company Capital Stock" on page
101.

         Directors  and  Officers.  At the  effective  time,  the  directors and
officers of Holdings  will  resign,  management  of the  combined  company  will
consist of the  present  LabOne  management  and the board of  directors  of the
combined  company will  consist of twelve  persons,  nine of whom are  presently
members  of the  LabOne  Board.  See  "Management  of  LabOne"  on  page  87 and
"Management of Combined Company After the Merger" on page 96.

<PAGE>

Conversion of LabOne Common Stock Into Shares of the Combined Company or Cash

         Merger  Consideration  for LabOne Common Stock.  Subject to the maximum
cash payment amount  limitation  described  below, if you are a record holder of
LabOne common stock  immediately  prior to the effective  time, you may elect to
receive:

     (a)  a cash price per share equal to $12.75 (a "Cash Election");

     (b)  one (1) share of combined  company common stock (a "Stock  Election");
          or

                  (c) the cash  price  per  share  for a stated  number  of your
         shares (a "Partial Cash  Election")  and combined  company common stock
         for a stated number of your shares (a "Partial Stock Election").

         A Form of Election,  which a record  holder of LabOne  common stock may
use for  purposes  of making a Cash  Election  or a Partial  Cash  Election,  is
included  with this Joint  Proxy  Statement/Prospectus.  If you fail to properly
make a Cash Election or Partial Cash  Election by  submitting to American  Stock
Transfer and Trust  Company,  which is acting as  Disbursing  Agent,  a properly
completed  and  signed  Form  of  Election  on or  before  the  meeting  of  the
stockholders  of LabOne,  you will be deemed to have made a Stock  Election  and
will receive stock of the combined company in exchange for your shares of LabOne
in the merger.

         If you make a Stock Election or a Partial Stock  Election,  your shares
of  LabOne   common  stock  with   respect  to  which  your   election  is  made
(collectively,  the "Stock Election Shares") will be converted into the right to
receive  combined  company common stock.  As noted above,  if you fail to make a
Cash Election or Partial Cash Election,  you will be deemed to have made a Stock
Election. Therefore, you do not need to do anything to make a Stock Election.

         From and after the effective time,  certificates  evidencing  shares of
LabOne common stock (other than shares held by Holdings, which will be cancelled
and Cash  Election  Shares) will be deemed to represent  the number of shares of
combined  company  common  stock into which  they were  converted.  Accordingly,
holders who wish to make a Stock  Election  will not be  required  to  surrender
their  shares to the  Disbursing  Agent.  However,  such  holders may obtain new
certificates at a later date by delivering the old  certificates to the combined
company's Transfer Agent, American Stock Transfer & Trust Company, together with
appropriate  transmittal  documents  that may be  obtained  from such agent upon
request.


                                       56

         If you make a Cash Election or a Partial Cash  Election,  your right to
receive cash in the merger is subject to the limitation  that the maximum amount
payable in cash with respect to all shares of LabOne common stock may not exceed
$16,600,000  in the  aggregate.  If the amount  payable in cash with  respect to
shares  of all  holders  who make a Cash  Election  or a Partial  Cash  Election
(collectively,  the "Cash  Election  Shares")  exceeds the maximum  cash payment
amount,  then your Cash  Election  Shares  will be  converted  into the right to
receive a combination  of combined  company  common stock and cash, so that each
Cash Election Share shall be converted into the right to receive:


<PAGE>

     (a)  an  amount  in cash  (rounded  to the  nearest  cent  and  subject  to
          adjustment,  as provided in clause (b) below), without interest, equal
          to the  product of (i) $12.75 and (ii) a fraction  ("Cash  Fraction"),
          the numerator of which will be the  $16,600,000 and the denominator of
          which will be the aggregate  amount of all valid cash  elections  with
          respect to all Cash Election Shares; and

     (b)  a number of shares  of  combined  company  common  stock  equal to the
          product of (i) one (1)  multiplied by ii) a fraction  equal to one (1)
          minus the Cash  Fraction.  If the product of clause (b)(i) and (ii) in
          the  preceding  sentence  results in a fractional  share  (taking into
          account all Cash  Election  Shares that you hold),  then the number of
          shares that you will receive  will be rounded up to the nearest  whole
          number of shares and the amount of cash payable  under clause (a) will
          be reduced by $12.75 less the value of such fraction.

         For  Example  - if all cash  elections  amount to  $20,000,000  and you
elected all cash for 100 of your  shares,  you would  receive cash for 83 LabOne
shares and combined company stock for 17 of your LabOne shares as follows:

                 $16,600,000/$20,000,000 = .83 = Cash Fraction

        .83 x 100 shares = 83 shares x $12.75= $1,058.25 in cash and

         .17 x 100 shares = 17 shares of combined company common stock

         Election  Procedures.   Holdings  has  appointed  its  transfer  agent,
American  Stock  Transfer & Trust  Company,  to act as Disbursing  Agent for the
payment  of merger  consideration  to  holders of LabOne  common  stock.  At the
effective time, the combined  company will deposit with the Disbursing  Agent in
trust for the benefit of LabOne  stockholders  cash in an amount  sufficient  to
make  cash  payments  to those  who have made Cash  Elections  or  Partial  Cash
Elections  together with shares of combined  company  common stock for those who
have made Partial Stock Elections.

         Pursuant  to  the  merger  agreement,  each  person  who  was a  LabOne
stockholder  on the record date for the LabOne annual  meeting is receiving with
this Joint Proxy  Statement/Prospectus  a Letter of Transmittal  that includes a
Form of Election for use in making a Cash  Election or a Partial Cash  Election.
Holdings and LabOne have agreed to use their reasonable efforts to make the Form
of  Election   and   related   Letter  of   Transmittal   and  the  Joint  Proxy
Statement/Prospectus  available  to all  persons  who become  record  holders of
LabOne common stock during the period  between such record date and the Election
Date referred to below.  The Form of Election  specifies  that delivery shall be
effected, and risk of loss and title to the LabOne certificates shall pass, only
upon proper  delivery of the LabOne  certificates  to the  Disbursing  Agent and
contains  instructions for use in effecting the surrender of LabOne certificates
in exchange for payment of cash to stockholders who wish to make a Cash Election
or a Partial Cash Election

         Under the merger agreement,  any Cash Election or Partial Cash Election
will be properly made only if the  Disbursing  Agent  receives at its designated
office,  before or concurrent with the  commencement of the LabOne  Stockholders
Meeting on  ___________  , 1999 (the  "Election  Date"),  a Form of Election and
related Letter of Transmittal, properly completed and signed, and accompanied by
certificates for the shares of LabOne

                                       57
<PAGE>

Common  Stock to which  such Form of  Election  relates,  properly  endorsed  or
otherwise  in  proper  form  for  transfer  (or  accompanied  by an  appropriate
guarantee  of  delivery  of such  certificates  as set  forth in such  Letter of
Transmittal  from a firm which is a member of a registered  national  securities
exchange  or of the  National  Association  of  Securities  Dealers,  Inc.  or a
commercial bank or trust company having an office or correspondent in the United
States, provided such Certificates are in fact delivered to the Disbursing Agent
within  three  trading  days after the date of  execution  of such  guarantee of
delivery).  Failure to deliver  certificates  covered by a guarantee of delivery
within  three  trading  days after the date of  execution  of such  guarantee of
delivery will  invalidate  any otherwise  properly made Cash Election or Partial
Cash Election.

         Any stockholder who submits a Form of Election to the Disbursing  Agent
may revoke it by delivering written notice to the Disbursing Agent prior to 5:00
p.m.,  New York City time,  on the Election  Date.  All Forms of Election  shall
automatically  be  revoked if the  Disbursing  Agent is  notified  in writing by
Holdings and LabOne that the merger has been abandoned. If a Form of Election is
revoked,  the  certificate  or  certificates  (or  guarantees  of  delivery,  as
appropriate)  for the  shares  of  LabOne  common  stock to which  such  Form of
Election  relates will be promptly  returned to the  stockholder  submitting the
same to the Disbursing Agent.

         Promptly after the Effective Time, the combined  company will cause the
Disbursing Agent to make payment to those who have timely and properly submitted
their LabOne  certificates  with a duly executed  Letter of Transmittal and such
other  documents  as may be  reasonably  required by the  Disbursing  Agent.  No
interest  will be paid or will accrue on amounts  payable upon the  surrender of
the LabOne  certificates.  If  payment is to be made to a person  other than the
person in whose name the LabOne certificate surrendered is registered,  it shall
be a condition of payment that the LabOne certificate so surrendered be properly
endorsed  or  otherwise  be in  proper  form for  transfer  and that the  person
requesting  such payment pay any  transfer or other taxes  required by reason of
the  payment  to a  person  other  than  the  registered  holder  of the  LabOne
certificate surrendered or establish to the satisfaction of the combined company
that such tax has been paid or is not applicable.

         The combined company will have the discretion, which it may delegate in
whole or in part to the Disbursing Agent, to determine whether Forms of Election
have been properly completed, signed and submitted. The decision of the combined
company or the Disbursing  Agent on such matters will be conclusive and binding.
Neither the combined  company nor the Disbursing  Agent are under any obligation
to notify any person of any defect in a Letter of  Transmittal  submitted to the
Disbursing  Agent. If the combined  company or Disbursing  Agent determines that
any purported Cash Election, Partial Cash Election, or Partial Stock Election is
not properly made, such purported  election will be deemed to be of no force and
effect and any  stockholder  making such purported  Cash Election,  Partial Cash
Election,  or Partial Stock Election will for purposes  hereof be deemed to have
made a Non-Election  and will receive  combined  company common stock for his or
her shares of LabOne common stock.

         The merger agreement  provides that the Disbursing Agent shall make all
computations  as to any proration  required  with respect to Cash  Elections and
Partial Cash  Elections and that any such  computation  will be  conclusive  and
binding on the holders of shares of LabOne Common Stock.  The  Disbursing  Agent
may,  with the mutual  agreement of Holdings and LabOne,  make such rules as are
consistent  with the merger  agreement for the  implementation  of the elections
provided for therein as shall be  necessary  or  desirable  fully to effect such
<PAGE>

elections.

Effect of Merger on Holdings Common Stock

         Each share of Holdings  $1.00 par common stock  issued and  outstanding
immediately  prior to the effective time and each treasury  share,  assuming the
prior  effectiveness  of the stock  split,  will  remain  outstanding  after the
effective  time as a share of  $0.01  par  value  common  stock of the  combined
company; provided, that shares as to which dissenters' rights have been properly
exercised  under  Missouri law will be treated as discussed  under  "Dissenters'
Rights" on page 50.


                                       58

         Although  the merger  will  effect a change in the name of  Holdings to
"LabOne, Inc.", certificates evidencing shares of Holdings common stock prior to
the  effective  time that bear the name "Lab  Holdings,  Inc." will  continue to
evidence  the same number of shares of combined  company  common stock after the
effective  time.   However,   holders  of  such   certificates  may  obtain  new
certificates that bear the name "LabOne, Inc. " and that reflect Missouri as the
state of incorporation  and a par value of $0.01 per share by delivering the old
certificates to the combined company's transfer agent, American Stock Transfer &
Trust  Company,  together with  appropriate  transmittal  documents  that may be
obtained from such agent upon request.

Effect of Merger on Options and Warrants

          LabOne Options and Warrants.  As the surviving  corporation,  Holdings
will assume each  outstanding  option or warrant to purchase LabOne common stock
that is outstanding at the effective time (a "LabOne Stock Option"),  whether or
not then  exercisable.  As a consequence of the assumption and due to adjustment
provisions  contained  in the option and  warrant  agreements,  the  options and
warrants will become  options and warrants to purchase the same number of shares
of common stock of the combined company, at the same price and on the same terms
as are provided in the  existing  option  agreements  for the purchase of LabOne
common stock.  LabOne and its compensation  committee have also taken such steps
as are  necessary  to  insure  that no  option  or  warrant  will vest or become
exercisable  as a result of the merger,  the absence of which is a condition  to
the obligations of Holdings to close the merger.

         Holdings  Stock  Options.  At the effective  time stock options  issued
under the Holdings 1997 Directors' Stock Option Plan will be adjusted to reflect
the 1.5 for 1 stock split.  Approval of the merger  agreement will also effect a
ratification  of action  taken by the Holdings  Board on August __,  1998,  that
amended the Plan and outstanding  options so that they could be exercised by the
optionee  at any time  until  the end of the term of the  option  following  the
termination of director  status due to a merger such as the merger  contemplated
by the merger  agreement.  See  "Interests of Certain  Persons in the Merger" on
page 48.

Dissenters' Rights

     Holders of Holdings  common stock are entitled to dissenters'  rights under
Section 351.455 of the Missouri General Business Corporation Law, if they comply
with  the  conditions  of the  statute.  See "The  Merger  Agreement-Dissenters'
Rights" on page 50.

<PAGE>
Conditions to the Merger

         Conditions to Obligations of Each Party to Effect the Merger

         The  respective  obligations  of each  party to effect  the  merger are
subject to the satisfaction  prior to the closing of the merger of the following
conditions:

         LabOne Stockholder Approval.  The merger agreement and the merger shall
have been  approved  and  adopted by the  affirmative  vote of the  holders of a
majority  of the  outstanding  shares of LabOne  common  stock  entitled to vote
thereon  and by the holders of a majority  of the  outstanding  shares of LabOne
common stock present and voting in favor of or against the merger  agreement and
the  merger,  other than  Holdings,  officers  and  directors  of  Holdings  and
beneficial  owners of 10% or more of the  outstanding  shares of Holdings common
stock.

         Holdings  Stockholder  Approval.  The merger  agreement  and the merger
shall have been approved and adopted by the  affirmative  vote of the holders of
two-thirds of the  outstanding  shares of Holdings common stock entitled to vote
thereon.  The amendment to the Holdings  Articles of  Incorporation  referred to
under "Proposal to Amend Articles of Incorporation" on page 120, shall have been
approved and adopted by the affirmative vote of the holders of a majority of the
outstanding shares of Holdings common stock entitled to vote thereon.

                                       59

         Listing of Combined  Company  Common Stock.  The shares of the combined
company common stock issuable to LabOne stockholders  pursuant to the merger and
such other shares of combined  company  common stock required to be reserved for
issuance in connection with the merger and related  transactions,  if any, shall
have been  authorized  for trading on the National  Market  System of The NASDAQ
Stock Market upon official notice of issuance.

         Governmental Approvals. All filings, consents,  approvals,  permits and
authorizations  required to be  obtained  prior to the  effective  time from any
governmental  entity in connection with the execution and delivery of the merger
agreement  and the  consummation  of the  transactions  contemplated  thereby by
LabOne  and  Holdings  must  have  been made or  obtained  and the  Registration
Statement  must have become  effective  under the Securities Act and must not be
the subject of any stop order or  proceeding  seeking a stop  order.  Other than
matters relating to the continued  effectiveness  of the registration  statement
with the Securities and Exchange  Commission and filings of merger  certificates
and articles of merger with state authorities,  the parties are not aware of any
other governmental  consents,  approvals or authorizations  that are required in
connection with the merger.

         Other  Approvals.  No  temporary  restraining  order,   preliminary  or
permanent   injunction   or  other  order  issued  by  any  court  of  competent
jurisdiction or other legal restraint or prohibition preventing the consummation
of the merger or imposing  conditions the compliance with which would reasonably
be expected to have a material  adverse effect may be in effect at the effective
time. In addition, Holdings and LabOne must have obtained all necessary consents
required under the merger agreement.

         Dissenters.  The total  number of shares  held by holders  of  Holdings
common stock who have exercised  dissenters' rights under Section 351.455 of the
General  and  Business  Corporation  Law of  Missouri  must not exceed 5% of the
Holdings common stock outstanding.
<PAGE>
         Tax  Opinion.  LabOne and  Holdings  shall have  received  an  opinion,
reasonably  satisfactory  to both LabOne and  Holdings,  of Lathrop & Gage L.C.,
counsel to Holdings,  generally as described  under "Certain  Federal Income Tax
Consequences" on page 45.

         Stock Split.  The stock split shall have become effective.

     Financing.   Holdings  will  have  obtained  the  financing   necessary  to
consummate  the  merger  and  other  transactions  contemplated  by  the  merger
agreement.

 Additional Conditions to Obligations of Holdings

         The  obligations  of  Holdings  to effect the merger are subject to the
satisfaction of certain other conditions, including:

         Accuracy of Representations  and Warranties.  The  representations  and
warranties of LabOne set forth in the merger agreement shall be accurate both as
of the date of the merger agreement and as of the time of closing on the closing
date of the merger (or if the  representation  or warranty  speaks as of another
date,  it shall be  accurate as of that date),  except for any  inaccuracy  that
would not have a material adverse effect.

         Performance of Agreements.  LabOne shall have performed in all material
respects all obligations  required to be performed by it at or prior to the time
of closing on the closing date of the merger.

         Opinion of Holdings'  Financial  Advisor.  The opinion of Salomon Smith
Barney  as to  the  fairness  from a  financial  point  of  view  of the  merger
consideration  to Holdings shall not have been withdrawn or materially  modified
in an  adverse  manner  prior  to  the  date  of  mailing  of  the  Joint  Proxy
Statement/Prospectus or any related supplement. See "The Proposed Merger-Opinion
of Holdings' Financial Advisor" on page 34.


                                       60
         Letters from LabOne  Affiliates.  LabOne shall cause to be prepared and
delivered  to Holdings a list  identifying  all persons  who, at the time of the
LabOne  Annual  Meeting,  may be deemed to be LabOne  affiliates as that term is
used in  paragraphs  (c) and (d) of Rule 145  under  the  Securities  Act.  As a
condition to its  obligations,  Holdings  shall have  received  signed copies of
agreements  from all parties  deemed to be LabOne  affiliates  pursuant to which
each such  party  acknowledges  that it is  subject  to the  provisions  of Rule
145(d).

         No Vesting of LabOne Stock Options. LabOne Stock Options shall not vest
as a result of the merger and will  maintain the same  vesting  period as if the
merger had not occurred.

 Additional Conditions to Obligations of LabOne

         The  obligations  of LabOne to effect  the  merger  are  subject to the
satisfaction of certain other conditions, including:

         Accuracy of Representations  and Warranties.  The  representations  and
warranties of Holdings set forth in the merger  agreement shall be accurate both
as of the date of the  merger  agreement  and as of the time of  closing  on the
closing date of the merger (or if the  representation  or warranty  speaks as of
another date, it shall be accurate as of that date),  except for any  inaccuracy
<PAGE>
that would not have a material adverse effect.

         Performance  of  Agreements.  Holdings  shall  have  performed  in  all
material respects all obligations  required to be performed by it at or prior to
the time of closing on the closing date of the merger.

         Opinion of LabOne's Financial  Advisor.  LabOne has received an opinion
of U.S.  Bancorp  Piper  Jaffray  Inc.  to the  effect  that,  as of the date of
execution  of the merger  agreement,  the  consideration  to be  received in the
merger by the LabOne Unaffiliated Stockholders is fair from a financial point of
view  to the  LabOne  Unaffiliated  Stockholders.  As a  condition  to  LabOne's
obligations,  such opinion shall not have been withdrawn or materially  modified
in an  adverse  manner  prior  to  the  date  of  mailing  of  the  Joint  Proxy
Statement/Prospectus or any supplement thereto. See "The Proposed Merger-Opinion
of Financial Advisor to the LabOne Special Committee" on page 39.

         Board of Directors  and Officers at the  Effective  Time.  LabOne shall
have received  irrevocable letters of resignation  effective as of the effective
time of the merger from all of the current directors of Holdings and all current
officers of Holdings.

Representations and Warranties

         The merger agreement contains various representations and warranties by
each of Holdings and LabOne relating to, among other things,

     (a)  the  organization  and  similar   corporate  matters  of  it  and  its
          subsidiaries, if any,

     (b)  its capital structure,

     (c)  the authorization, execution, delivery, performance and enforceability
          of the  merger  agreement  and  related  matters,  and the  absence of
          conflicts,  violations of or defaults under its governing documents or
          any loan or credit agreement, note, bond, mortgage, indenture or other
          agreement,   instrument,   permit,  concession,   franchise,  license,
          judgment,  order, decree, statute, law, ordinance,  rule or regulation
          applicable to it, any of its respective  subsidiaries  or any of their
          respective properties or assets as a result of the merger agreement,

     (d)  the absence of undisclosed material liabilities,


                                       61

     (e)  the absence of defaults in any material agreements,

     (f)  compliance with certain laws,

     (g)  compliance with environmental laws, and

     (h)  title to real and personal property.

         The merger  agreement also contains  representations  and warranties of
LabOne and Holdings  regarding  the  documents  and reports that they have filed
with the Securities and Exchange Commission.



<PAGE>

Certain Covenants; Conduct of Business

         During the period from the date of the merger  agreement and continuing
until the  effective  time,  each of Holdings and LabOne has agreed as to itself
and its subsidiaries that it will:

     (a)  carry on its businesses in the usual,  regular and ordinary  course in
          substantially the same manner as previously conducted,

     (b)  not declare or pay any  dividends  on or make other  distributions  in
          respect  of  any of its  capital  stock,  except  for  cash  dividends
          consistent with past practices,

     (c)  not split,  combine or reclassify any of its capital stock or issue or
          authorize or propose the issuance of any other  securities  in respect
          of, in lieu of or in  substitution  for  shares of its  capital  stock
          (other than the stock split, in the case of Holdings),

     (d)  not  repurchase,  redeem or  otherwise  acquire,  or permit any of its
          subsidiaries to purchase,  redeem or otherwise acquire,  any shares of
          its capital stock, subject to limited exceptions,

     (e)  not  deliver or sell,  or  authorize  or propose to issue,  deliver or
          sell, any shares of its capital stock of any class,  any  indebtedness
          having the right to vote or any  securities  convertible  into, or any
          rights,  warrants or options to acquire, any such shares,  voting debt
          or convertible securities,

     (f)  not  amend or  propose  to  amend  its  charter  documents  except  as
          contemplated by the merger agreement,

     (g)  not  acquire  or agree to acquire  any  business  or any  corporation,
          partnership,  association or other business  organization  or division
          thereof,

     (h)  not sell,  lease,  encumber or otherwise dispose of, or agree to sell,
          lease  (whether  such  lease  is an  operating  or a  capital  lease),
          encumber or otherwise dispose of, any of its material assets,

     (i)  not authorize,  recommend, propose or announce an intention to adopt a
          plan of complete or partial liquidation or dissolution,

     (j)  not grant any increases in the  compensation  of any of its directors,
          officers or  employees,  except  increases in the  ordinary  course of
          business and in accordance with past practice,

     (k)  not pay or agree to pay any  pension,  retirement  allowance  or other
          employee  benefit not required or  contemplated by any of the existing
          Holdings or LabOne benefit programs or plans to any director,  officer
          or employee, whether past or present,






                                       62

<PAGE>
     (l)  not enter into any new, or amend any existing, employment or severance
          or termination agreement with any director, officer or key employee,

     (m)  not become  obligated under any new benefit program or plan, which was
          not in  existence  or  approved  by the  Holdings  or LabOne  Board of
          Directors  prior to or on the date of the merger  agreement,  or amend
          any such plan or  arrangement  in  existence on the date of the merger
          agreement  if such  amendment  would  have the  effect  of  materially
          enhancing any benefits thereunder,

     (n)  except in the ordinary course of business,  not incur any indebtedness
          for borrowed money or guarantee any such indebtedness or issue or sell
          any  debt  securities  or  warrants  or  rights  to  acquire  any debt
          securities of such party or any of its  subsidiaries  or guarantee any
          debt securities of others,

     (o)  not commit to  aggregate  capital  expenditures  in excess of $100,000
          outside such party's capital budget,

     (p)  not, directly or indirectly, solicit or initiate any prospective buyer
          or make any proposal that  constitutes,  or may reasonably be expected
          to lead to, an  Acquisition  Proposal  (as defined  below)  except for
          certain unsolicited  proposals which the directors of either party may
          be required to respond to pursuant to their fiduciary duties, and

     (q)  not take any action  that could  reasonably  be  expected to prevent a
          merger  or  other  acquisition  by the  combined  company  from  being
          accounted for as a pooling of interests.

         An "Acquisition  Proposal" means any proposal or offer,  other than one
by  Holdings,  LabOne or their  affiliates,  as the case may be, for a tender or
exchange offer, a merger,  consolidation or other business combination involving
Holdings,  LabOne or any of their subsidiaries or any proposal to acquire in any
manner a substantial  equity interest in, or substantially all of the assets of,
Holdings, LabOne or any of their subsidiaries, as the case may be.

         Holdings also agrees to take action  reasonably  necessary to cause the
stock split to be effective prior to the effective time of the merger.

Amendment of Articles of Incorporation

         Pursuant to the merger agreement and in connection with the merger, the
Articles of  Incorporation  of Holdings  will be amended by the  certificate  of
merger.  See "Amendments to Holdings'  Articles of Incorporation  and Bylaws" on
page 51.

Additional Agreements

     Pursuant to the merger  agreement,  Holdings  and LabOne have agreed  among
other matters, that

     (a)  Holdings  will take all  corporate  action  necessary  to permit it to
          issue shares of Holdings  common stock pursuant to the merger and will
          use all reasonable efforts to have approved for listing on the NASDAQ,
          subject to official notice of issuance,  the shares of Holdings common
          stock to be issued in the merger and upon exercise of the LabOne stock
          options and warrants;


<PAGE>
     (b)  the combined company will assume the LabOne stock options and warrants
          (except under certain limited circumstances);

     (c)  the combined company will,  subject to certain  limitations,  maintain
          directors' and

                                       63

     officers' liability  insurance for officers and directors of LabOne and its
          subsidiaries (see "Indemnification"); and

     (d)  neither  will take or omit to take any action  that  would  affect the
          qualification of the merger as a  reorganization  described in Section
          332 and 368(a) of the Code.

Expenses

         Each party to the merger  agreement will pay its own expenses  incident
to preparing  for,  entering into and carrying out the merger  agreement and the
consummation of the transactions contemplated thereby, provided that immediately
prior to the  effective  time  Holdings  will  reimburse  LabOne  for its merger
expenses.

         If the merger  agreement is terminated by (A) Holdings  because  either
(i) LabOne  fails to comply in any material  respect with any of its  covenants,
agreements or conditions or (ii) any representation or warranty of LabOne is not
true  and  correct  in all  material  respects,  or (B)  LabOne,  because  of an
Acquisition  Proposal,  and if Holdings is not in material  breach of the merger
agreement at the time of such  termination,  then LabOne will pay the reasonable
out-of-pocket  expenses  incurred  by  Holdings  in  connection  with the merger
agreement. Likewise, if the merger agreement is terminated by (A) LabOne because
either (i)  Holdings  fails to comply in any  material  respect  with any of its
covenants,  agreements or conditions or (ii) any  representation  or warranty of
Holdings  is not true and  correct in all  material  respects,  or (B)  Holdings
because of an Acquisition  Proposal,  and if LabOne is not in material breach of
the merger agreement at the time of such termination, then Holdings will pay the
reasonable  out-of-pocket  expenses  incurred by LabOne in  connection  with the
merger agreement.

Indemnification

         The  merger  agreement   obligates  the  combined  company  to  provide
indemnification  and to  advance  expenses  to  persons  who were  officers  and
directors of LabOne or Holdings prior to the effective time.  These  obligations
are in addition to the indemnification  obligations  contained in the Bylaws and
separate indemnification  agreements and will survive the merger and will remain
in force for six years after the effective time.  Further,  the merger agreement
obligates  the combined  company to provide  directors  and  officers  liability
insurance for a period of six years to persons who were directors or officers on
March 7,  1999 and who  cease to be so prior to or at the  effective  time.  The
obligation of the combined company to indemnify  directors and officers includes
the  obligation  to indemnify for  liabilities  arising out of the merger or the
merger agreement,

More specifically, the merger agreement provides that the combined company will

                  (a)  indemnify,  defend and hold  harmless  each person who is
         now, or has been at any time prior to the date of the merger  agreement
         or who becomes prior to the  effective  time, an officer or director of
<PAGE>

         Holdings  or  LabOne or any of their  subsidiaries  or an  employee  of
         Holdings or LabOne or any of their subsidiaries who acts as a fiduciary
         under  any of the  Holdings  benefit  programs  or plans or the  LabOne
         benefit programs or plans, against all

               (i)  losses,   claims,   damages,   costs,   expenses  (including
          attorneys'   fees),   liabilities,   judgments,   penalties  or  fines
          (including  excise taxes  assessed  with  respect to employee  benefit
          plans);

               (ii) amounts that are paid in settlement with the approval of the
          indemnifying party, and

               (iii)all related interest, assessments and other charges, of
               or in connection  with any  threatened  or actual claim,  action,
               suit, proceeding or investigation that is

                                       64

               based in whole or in part on, or arising in whole or in part
               out of, the fact that such person is or was a director,  officer,
               or  such   employee  of  Holdings  or  LabOne  or  any  of  their
               subsidiaries  or as a  fiduciary  under any  benefit  program  or
               plans,  whether pertaining to any matter existing or occurring at
               or prior to the  effective  time and whether  asserted or claimed
               prior to, or at or after, the effective time,  unless in any such
               case the conduct of the indemnified person is finally adjudged to
               have been knowingly fraudulent,  deliberately dishonest or wilful
               misconduct;

          (b)  advance  expenses  on  an  unsecured  basis  upon  receipt  of an
               undertaking from an indemnified  party to repay the advance if it
               is finally adjudged in the judicial proceeding in which liability
               is  imposed  that  the  indemnified  party  is  not  entitled  to
               indemnification; and

          (c)  indemnify  an  indemnified  person  against  expenses  reasonably
               incurred  by  such  person  in  enforcing  his or her  rights  to
               indemnification  and advances  under the merger  agreement or any
               other  agreement  or bylaw of  Holdings  or  LabOne  or rights to
               recovery under any insurance policy.

Under the merger  agreement,  the combined company will bear the burden of proof
in any  proceeding  in which it is contesting  an  indemnified  party's right to
indemnification or advances.

Amendment, Waiver and Termination

         Subject  to  certain  limitations  and upon the  terms set forth in the
merger  agreement,  the merger agreement may be terminated and the merger may be
abandoned  at any time  prior to the  effective  time,  whether  before or after
approval  of  the  matters  presented  in  connection  with  the  merger  by the
stockholders of LabOne or Holdings:





<PAGE>

          (a)  by mutual  written  consent of LabOne and Holdings,  or by mutual
               action of their respective Boards of Directors, which in the case
               of LabOne  requires that the LabOne Board act  consistently  with
               the recommendations of the Special Committee;

          (b)  by either LabOne or Holdings if

                         (i) the  merger  shall  not have  been  consummated  by
                    October 31, 1999;

                         (ii) any  court  of  competent  jurisdiction,  or other
                    governmental body or regulatory  authority shall have issued
                    an  order,  decree  or  ruling  or taken  any  other  action
                    permanently restraining,  enjoining or otherwise prohibiting
                    the merger and such order,  decree,  ruling or other  action
                    shall have become final and nonappealable;

                         (iii)  the  stockholders  of  Holdings  shall  not have
                    approved the merger  agreement or the amendment to Article X
                    of  Holdings'  Articles  of  Incorporation  described  under
                    "Proposal to Amend Articles of Incorporation" on page 120 ;

                         (iv)  the   stockholders   of  LabOne  or  the   LabOne
                    Unaffiliated  Stockholders of LabOne shall not have approved
                    the merger agreement and the merger;

                         (v) in the  exercise  of its good faith  judgment as to
                    its  fiduciary  duties to its  stockholders,  as  advised by
                    outside counsel,  the Holdings Board of Directors determines
                    that  such   termination   is   required  by  reason  of  an
                    Acquisition Proposal having been made; or

                         (vi) in the  exercise of its good faith  judgment as to
                    its  fiduciary  duties to its  stockholders,  as  advised by
                    outside counsel, the LabOne Board of Directors

                                       65

                    determines that such  termination is required by reason
                    of an Acquisition Proposal having been made;

          (c)  by Holdings if

                         (i) LabOne  shall have failed to comply in any material
                    respect with any of its covenants,  agreements or conditions
                    contained  in the merger  agreement  to be complied  with or
                    performed by LabOne at or prior to such date of  termination
                    (subject to notice and an opportunity to cure);

                         (ii) subject to limited exceptions,  any representation
                    or  warranty  of LabOne  contained  in the merger  agreement
                    shall  not  be  true  in all  material  respects  when  made
                    (subject to notice and an  opportunity to cure) or on and as
                    of the effective  time as if made on and as of the effective
                    time (except to the extent it relates to a particular date);



<PAGE>
                         (iii)   Holdings'   financial   advisor   withdraws  or
                    materially  modifies  its  fairness  opinion  in an  adverse
                    manner; or

                         (iv) the LabOne Board of Directors ( in accordance with
                    a  recommendation  by  the  Special  Committee)   withdraws,
                    modifies  or  changes  its   recommendation  of  the  merger
                    agreement and the merger in a manner  adverse to Holdings or
                    resolves to do any of the foregoing; or

          (d)  by LabOne if

                         (i)  Holdings  shall  have  failed  to  comply  in  any
                    material  respect with any of its  covenants,  agreements or
                    conditions  contained in the merger agreement to be complied
                    with  or  performed  by it at  or  prior  to  such  date  of
                    termination (subject to notice and an opportunity to cure);

                         (ii) subject to limited exceptions,  any representation
                    or warranty of Holdings  contained  in the merger  agreement
                    shall  not  be  true  in all  material  respects  when  made
                    (subject to notice and an  opportunity to cure) or on and as
                    of the effective  time as if made on and as of the effective
                    time (except to the extent it relates to a particular date);

                         (iii)   LabOne's   financial   advisor   withdraws   or
                    materially  modifies  its  fairness  opinion  in an  adverse
                    manner; or

                         (iv)  the  Holdings   Board  of  Directors   withdraws,
                    modifies  or  changes  its   recommendation  of  the  merger
                    agreement  and the  merger in a manner  adverse to LabOne or
                    resolves to do any of the foregoing.


                          THE MEETINGS OF STOCKHOLDERS

Holdings Annual Meeting

         The Holdings annual meeting will be held on_____________, July___, 1999
at _:00 p.m.  local time,  at the  offices of LabOne,  10101  Renner  Boulevard,
Lenexa, Kansas 66219.


                                       66

         At the Holdings  annual meeting,  the  stockholders of Holdings will be
asked to consider and vote upon:

          1.   A proposal to adopt the Agreement and Plan of Merger,  as amended
               and restated, by and between Lab Holdings, Inc. and LabOne, Inc.,
               dated as of March 7, 1999, which is described in this Joint Proxy
               Statement/Prospectus,  and the transactions contemplated thereby.
               Pursuant  to the merger  agreement,  (a) shares of Lab  Holdings,
               Inc. common stock will be split 1.5 for one immediately  prior to
               the merger,  (b) LabOne will merge with and into  Holdings,  with
               Holdings being the surviving  corporation,  (c) each  outstanding
               share  of  LabOne  Common  Stock  (other  than  shares  owned  by
               Holdings)  will  be  converted  into  either:  (i) one  share  of
<PAGE>

               surviving  corporation  common stock,  (ii) cash equal to $12.75,
               subject  to an  aggregate  $16.6  million  cash  limit or (iii) a
               combination  of cash  and  shares;  (d)  Holdings'  name  will be
               changed to "LabOne,  Inc." (e) the  officers of Holdings  will be
               replaced  by  the  current  officers  of  LabOne,   (f)  Holdings
               directors  will  be  replaced  by  nine  of  the  current  LabOne
               directors and three additional  non-management directors, and (g)
               the  Articles of  Incorporation  and Bylaws of  Holdings  will be
               amended to read as set forth in Appendix B and  Appendix C to the
               merger agreement.

          2.   A proposal to amend Paragraph B.4 of Article X of the Articles of
               Incorporation  to change the  definition of the term  "Continuing
               Director Quorum" from nine Continuing  Directors to two-thirds of
               the Continuing Directors;

          3.   A proposal  to elect two B class  directors,  to serve  until the
               earlier  of  the  2002  Annual  Meeting  of  Stockholders  or the
               effective time of the merger.

          4.   A proposal  to ratify the  selection  of KPMG LLP as  independent
               public accountants for Holdings for 1999.

          5.   Such  other  business  as may  properly  come  before  the annual
               meeting or any adjournment or postponement thereof.

         These  proposals and related  matters are described  more fully in this
Joint Proxy Statement/Prospectus.  A copy of the merger agreement is attached to
the Joint Proxy  Statement/Prospectus  as Appendix A. A copy of the  Articles of
Incorporation  and Bylaws of  Holdings,  as proposed to be amended by the merger
agreement,  are attached to the Joint Proxy  Statement/Prospectus  as Appendix B
and C, respectively.

         The  Board of  Directors  of  Holdings  has  unanimously  approved  the
proposed amendment to the Articles of Incorporation  described in Proposal 1 and
recommends a vote FOR adoption  and  approval of that  amendment  and the merger
agreement.  The Board of Directors of Holdings also recommends that you vote FOR
the election of each nominee to the Board of Directors  and FOR the approval and
ratification of Holdings' independent public accountants for 1999.

LabOne Annual Meeting

         The LabOne annual meeting will be held  on___________,  July ___, 1999,
at __p.m. local time at__________________________________________.

         At the LabOne annual  meeting  stockholders  of LabOne will be asked to
consider and vote upon:

     1.   A proposal to adopt the Agreement  and Plan of Merger,  as amended and
          restated, by and between Lab Holdings, Inc. and LabOne, Inc., dated as
          of  March  7,  1999,   which  is   described   in  this  Joint   Proxy
          Statement/Prospectus,   and  the  transactions  contemplated  thereby.
          Pursuant to the merger  agreement,  (a) shares of Lab  Holdings,  Inc.
          common  stock  will be  split  1.5 for one  immediately  prior  to the
          merger, (b) LabOne will merge with and into Holdings, with Holdings

                                       67

<PAGE>

     beingthe surviving corporation, (c) each outstanding share of LabOne Common
          Stock  (other than shares owned by  Holdings)  will be converted  into
          either: (i) one share of surviving corporation common stock, (ii) cash
          equal to $12.75,  subject to an aggregate  $16.6 million cash limit or
          (iii) a combination  of cash and shares;  (d)  Holdings'  name will be
          changed  to  "LabOne,  Inc."  (e) the  officers  of  Holdings  will be
          replaced by the current  officers of LabOne,  (f)  Holdings  directors
          will be  replaced by nine of the current  LabOne  directors  and three
          additional   non-management   directors,   and  (g)  the  Articles  of
          Incorporation  and Bylaws of  Holdings  will be amended to read as set
          forth in Appendix B and Appendix C to the merger agreement.

     2.   A proposal to elect  twelve  directors  of LabOne as set forth in this
          Joint Proxy Statement/Prospectus, to serve until the effective time of
          the Merger, or if the Merger is not consummated, until the 2000 Annual
          Meeting of Stockholders.

     3.   A proposal to ratify the selection of KPMG LLP as  independent  public
          accountants for LabOne and its subsidiaries for the 1999 fiscal year.

     4.   Such other business as may properly come before the Meeting.

           These  proposals and related matters are described more fully in this
Joint Proxy Statement/Prospectus.  A copy of the merger agreement is attached to
the Joint Proxy  Statement/Prospectus  as Appendix A. A copy of the  Articles of
Incorporation  and Bylaws of  Holdings,  as proposed to be amended by the merger
agreement,  are attached to the Joint Proxy  Statement/Prospectus  as Appendix B
and C, respectively.


           The Board of  Directors  of LabOne,  upon the  recommendation  of the
Special Committee, has approved the merger agreement,  declared its advisability
and  recommends  a vote FOR  adoption  of the  merger  agreement.  The  Board of
Directors  of LabOne  also  recommends  that you vote FOR the  election  of each
nominee to the Board of  Directors  and FOR the  approval  and  ratification  of
LabOne's independent public accountants for the 1999 fiscal year.

Quorum

           The presence,  in person or by proxy, of the holders of a majority of
the shares of Holdings  common stock is necessary to  constitute a quorum at the
Holdings annual meeting.  Similarly, the presence, in person or by proxy, of the
holders  of a  majority  of the  outstanding  shares of LabOne  common  stock is
necessary to constitute a quorum at the LabOne annual meeting.

Vote Required

           Holdings Meeting of Stockholders. The affirmative vote of the holders
of two-thirds of the outstanding  Holdings common stock is required to adopt the
merger  agreement and the  transactions  contemplated  thereby.  Approval of the
merger agreement  constitutes  approval of the transactions  contemplated by the
merger agreement.

           The affirmative  vote of the holders of a majority of the outstanding
Holdings  common  stock is required to adopt the  amendment  to Article X of the
Articles of Incorporation.


<PAGE>

           In the election of directors,  shares may be voted  cumulatively  and
directors  are  elected by a  plurality  vote.  Accordingly,  a  stockholder  is
entitled to two votes for each share owned, one for each director to be elected.
A stockholder's votes may be cast equally among all nominees or may be voted all
for one nominee.

           The  affirmative  vote of the  holders  of a  majority  of the shares
present,  in person or by proxy,  at the Holdings annual meeting is necessary to
approve and ratify the appointment of Holdings' independent public

                                       68
accountants for the 1999 fiscal year.

           LabOne Meeting of  Stockholders.  The affirmative vote of the holders
of a majority of the  outstanding  LabOne  common stock is required to adopt the
merger  agreement and the  transactions  contemplated  thereby.  Adoption of the
merger agreement  constitutes  approval of the transactions  contemplated by the
merger agreement.

The merger is also  conditioned on approval by the holders of a majority of the
outstanding  shares of LabOne  common  stock  present  and voting in favor of or
against the merger agreement and the merger,  other than Holdings,  officers and
directors of Holdings and  beneficial  owners of 10% or more of the  outstanding
shares of Holdings common stock.

           Each of the  twelve  directors  to serve as  members  of the Board of
Directors  will be elected by a  plurality  of the votes cast by the  holders of
LabOne Common Stock. There will be no cumulative voting for directors.]

           The  affirmative  vote of the  holders  of a  majority  of the shares
present,  in person or by proxy,  at the LabOne  Annual  Meeting and entitled to
vote  thereon is  necessary  to approve and ratify the  appointment  of LabOne's
independent public accountants for the 1999 fiscal year.

Record Date; Stock Entitled to Vote

           The Holdings Board of Directors has established________,  1999 as the
date to determine  those  record  holders of Holdings  Common Stock  entitled to
notice of and to vote at the Holdings Annual Meeting.  On that date,  there were
_________ shares of Holdings Common Stock  outstanding and  approximately_______
holders of record of such shares.  Holders of Holdings Common Stock are entitled
to one vote for each share  held,  except in the  election of  directors,  as to
which cumulative voting applies.

           The LabOne Board of Directors has  established  the close of business
on ________, 1999 as the date to determine those record holders of LabOne Common
Stock  entitled to notice of and to vote at the LabOne Annual  Meeting.  On that
date,  there were  __________  shares of LabOne  Common  Stock  outstanding  and
_______  holders of record of such  shares.  Holders of LabOne  Common Stock are
entitled to one vote for each share held.

Voting of Proxies

           Shares  represented by all properly executed proxies received in time
for each of the respective  Meetings will be voted at such meeting in the manner
specified by the holders thereof.  Proxies of Holdings  stockholders that do not
contain  voting  instructions  will be voted FOR  adoption  and  approval of the
Articles Amendment,  FOR adoption and approval of the merger agreement,  FOR the
<PAGE>

election as a director of each  nominee  listed  herein,  and FOR  adoption  and
ratification of the appointment of Holdings'  independent public accountants for
1999.  Proxies of LabOne  stockholders  that do not contain voting  instructions
will be voted  FOR  adoption  and  approval  of the  merger  agreement,  FOR the
election as a director of each  nominee  listed  herein,  and FOR  adoption  and
ratification of the appointment of LabOne's  independent  public accountants for
the 1999 fiscal year. The proxies confer discretionary  authority on the persons
named therein with respect to procedural  matters and matters that properly come
before a meeting as to which the corporation holding the meeting did not receive
notice a reasonable  time before the date this Joint Proxy  Statement/Prospectus
was mailed.  It is not expected that any proposal  other than those  referred to
herein will be brought before either of the Meetings. If, however, other matters
are properly  presented,  the persons  named as proxies will vote in  accordance
with their judgment with respect to such matters, except that proxies containing
instructions to vote AGAINST  adoption of the merger agreement will not be voted
in favor of a motion to adjourn either Meeting to another time and/or place.

           If a holder of Holdings  Common Stock or LabOne Common Stock does not
return a signed  proxy  card,  his or her shares will not be voted and this will
have the  effect  of a vote  against  the  merger  agreement  at the  respective
Meetings and a vote against the proposed  amendment to Article X of the Holdings
Articles of

                                       69

Incorporation,  provided  that shares of LabOne  Common Stock that are not voted
will not affect  whether the merger  agreement  is approved by a majority of the
LabOne Unaffiliated Stockholders voting on the merger agreement. Abstentions and
broker non-votes  (shares held by brokers and other nominees or fiduciaries that
are present at either  meeting but not voted on a  particular  matter) will have
the effect of a vote against the merger agreement at the respective meetings and
a vote against the Articles  Amendment at the Holdings  annual  meeting.  Broker
non-votes  will not be counted in determining  whether the merger  agreement has
been approved by a majority of the LabOne  Unaffiliated  Stockholders  voting on
the merger agreement. For purposes of ratifying the appointment of Holdings' and
LabOne's  independent public accountants for 1999, an abstention shall be deemed
a vote against such appointment and a broker non-vote will not be counted either
for or against ratification and will thus have no effect.

STOCKHOLDERS SHOULD NOT SEND STOCK CERTIFICATES WITH THEIR
PROXY CARDS. A SEPARATE ENVELOPE AND A LETTER OF TRANSMITTAL IS
ENCLOSED FOR LABONE STOCKHOLDERS WHO WISH TO RECEIVE CASH FOR
THEIR SHARES OF LABONE COMMON STOCK.

Revocation of Proxies

           Any record  holder of  Holdings  common  stock has the  unconditional
right to revoke his or her proxy at any time prior to the voting  thereof at the
Holdings annual meeting by (i) filing a written revocation with the Secretary of
Holdings  bearing a later date than the proxy prior to the voting of such proxy,
(ii) giving a duly executed  proxy  bearing a later date or (iii)  attending the
Holdings annual meeting and voting in person. Attendance by a stockholder at the
Holdings  annual  meeting will not by itself  revoke his or her proxy.  Holdings
stockholders  of record  should  address  any  revocation  of such proxy to: Lab
Holdings, Inc., 5000 West 95th Street, Suite 260, Shawnee Mission, Kansas 66207,
Attention: Steven K. Fitzwater.


<PAGE>

           Any record holder of LabOne common stock has the unconditional  right
to revoke his or her proxy at any time prior to the voting thereof at the LabOne
annual meeting by (i) filing a written  revocation bearing a later date than the
proxy  with the  Secretary  of LabOne  prior to the voting of such  proxy,  (ii)
giving a duly executed proxy bearing a later date or (iii)  attending the LabOne
annual  meeting and voting in person.  Attendance by a stockholder at the LabOne
annual meeting will not by itself revoke his or her proxy.  LabOne  stockholders
of record should address any revocation of such proxy to:  LabOne,  Inc.,  10101
Renner Boulevard, Lenexa, Kansas 66219 Attention: Gregg R. Sadler.


Revocation of Cash Elections

           Any record  holder of LabOne  common stock who has elected to receive
cash for any of the holders' LabOne shares by delivering a properly executed and
documented  Form of Election,  may only revoke that election by a written notice
received by the Disbursing  Agent prior to 10:00 a.m.,  Kansas City time, on the
date of the LabOne meeting.  The Disbursing Agent's address for this purpose is:
__________________.

           An  election  will also be  automatically  revoked if the  Disbursing
Agent is  notified  in writing by  Holdings  and LabOne that the Merger has been
abandoned.  If an election is  revoked,  the  certificate  or  certificates  (or
guarantees of delivery,  as  appropriate)  for the shares of LabOne common stock
covered by the election will be promptly returned to the electing stockholder.

Solicitation of Proxies

           Solicitation  of proxies for use at the Holdings  annual  meeting and
the LabOne annual meeting may be made in person or by mail, telephone,  telecopy
or telegram. Each of Holdings and LabOne will bear the cost of

                                       70

the  solicitation  of  proxies  from  its  own  stockholders.   In  addition  to
solicitation  by mail,  the  directors,  officers and regular  employees of each
company and its  subsidiaries  may solicit  proxies  from  stockholders  of such
company by  telephone,  telecopy or telegram or in person.  Holdings  and LabOne
have requested  banking  institutions,  brokerage firms,  custodians,  trustees,
nominees and  fiduciaries  to forward  solicitation  materials to the beneficial
owners of Holdings  common stock and LabOne  common stock held of record by such
entities, and Holdings and LabOne will, upon the request of such record holders,
reimburse reasonable forwarding expenses.  In addition,  Holdings and LabOne may
engage third parties to assist in the solicitation of proxies, and in that event
would incur additional costs.

     In addition,  Holdings and LabOne have each  retained to assist them in the
solicitation of proxies from  stockholders  in connection with their  respective
meetings of  stockholders.  will  receive a fee of $ from each of  Holdings  and
LabOne as compensation for its services  ---------------------  ------------ and
reimbursement of its  out-of-pocket  expenses in connection  therewith.  Each of
Holdings and LabOne has agreed to indemnify against certain  liabilities arising
out of or in connection with these engagements.





<PAGE>

Security Ownership of Certain Persons

           As of the record date for the Holdings annual meeting,  the directors
and  executive  officers of Holdings as a group  beneficially  owned  (excluding
shares  purchasable  upon  exercise of stock  options)____%  of the  outstanding
shares of Holdings  common stock.  In addition,  as of such date,  directors and
certain  officers  and  directors of LabOne who are not officers or directors of
Holdings  beneficially  owned ____% of the outstanding shares of Holdings common
stock.

           As of the LabOne record date, the directors and executive officers of
LabOne as a group beneficially owned (excluding shares purchasable upon exercise
of stock  options)____% of the outstanding  shares of LabOne common stock. As of
the LabOne record date,  Holdings  beneficially  owned____%  of the  outstanding
shares of LabOne  common  stock.  In  addition,  as of the LabOne  record  date,
certain officers and directors of Holdings who are not officers and directors of
LabOne beneficially owned____% of the outstanding shares of LabOne common stock.

           All of such officers and  directors of both Holdings and LabOne,  and
Holdings  have  indicated  that they intend to vote in favor of the  proposal to
adopt the merger agreement.

                                       71

<PAGE>

               UNAUDITED PRO FORMA CONDENSED FINANCIAL STATEMENTS

           The following  unaudited pro forma financial  statements  present (i)
unaudited pro forma  balance  sheet data at December 31, 1998,  giving effect to
the merger as if the merger had been consummated on that date and (ii) unaudited
pro forma operating data for the year ended December 31, 1998,  giving effect to
the  acquisition of minority  interest as if the merger had been  consummated on
January 1, 1998.  The unaudited pro forma  statements of operations for the year
ended December 31, 1998 combine the results of operations  for Holdings'  fiscal
year ended December 31, 1998 with the results of operations for LabOne's  fiscal
year ended December 31, 1998, after giving effect to pro forma adjustments.

           The  merger  will be  accounted  for as an  acquisition  of  minority
interest using the purchase  method of accounting.  For the purpose of preparing
its consolidated financial statements,  the combined company will determine fair
values of LabOne's net assets and with the excess of  consideration  paid,  plus
costs of the merger, over the fair value of the net assets acquired, recorded as
goodwill.  The goodwill  created by the merger will be amortized  over a 20 year
period.  A final  determination  of required  purchase  accounting  adjustments,
including  the  allocation  of the  purchase  price to the assets  acquired  and
liabilities  assumed  based on their  respective  fair values,  has not yet been
made;  however,  management  does not believe the adjustments to LabOne's assets
and  liabilities  will  be  material.   Accordingly,   the  purchase  accounting
adjustments made in connection with the development of the following summary pro
forma combined  financial  statements are  preliminary and have been made solely
for the purposes of developing such pro forma combined financial statements.

           The following  unaudited pro forma financial  statements are provided
for  informational  purposes  only and  should be read in  conjunction  with the
separate audited consolidated  financial statement and related notes of Holdings
(which are  incorporated  herein by reference) and LabOne's  (which are included
elsewhere in this Joint Proxy Statement/Prospectus). The historical consolidated
information for Holdings has been adjusted to reflect the 1.5 to one stock split
and the  change  in par  value  from  $1.00 to $.01  per  share.  The  following
unaudited pro forma financial statements are based on certain assumptions and do
not purport to be indicative of the results which  actually  would have occurred
if the  merger  had been  consummated  on the  dates  indicated  or which may be
obtained in the future.


                                       72

<PAGE>
                       Lab Holdings, Inc. and Subsidiaries
                  Unaudited Pro Forma Condensed Balance Sheets
                               December 31, 1998
<TABLE>
<CAPTION>
                              
                                                                                                     Assumes Stock and
                                        Holdings       Assumes All Stock Elections               Maximum Cash Elections
                                        Consolidated   ---------------------------             ----------------------------  
                                        Historical     Adjustments         Pro Forma           Adjustments         Pro Forma
                                        -------        -----------         ---------           -----------         ---------
                                                                                  (in thousands)
<S>                               <C>            <C>                    <C>                    <C>              <C>    
ASSETS
Current assets:
   Cash and cash equivalents         $  15,223            (1,750)     (a)    13,473                (4,750)   (a)    10,473
   Accounts receivable                  18,730                               18,730                                 18,730
   Current income taxes                    400                                  400                                    400
   Other current assets                  8,066                                8,066                                  8,066
   Deferred income taxes                 3,973                                3,973                ______            3,973
                                    ----------     -------------         ----------                             ----------
        Total current assets            46,392            (1,750)            44,642                (4,750)          41,642

Property, plant and equipment, net      36,936                               36,936                                 36,936
Other assets:
   Intangible assets                    14,825            22,218      (a)    37,043                24,869    (a)    39,694
   Deferred income taxes                    65                                   65                                     65
   Other                                   425                                  425                                    425
                                    ----------     -------------         -----------        -------------       -----------
        Total assets                 $  98,643            20,468            119,111                20,119          118,762
                                      ========          ========           ========              ========         ========
<PAGE>

LIABILITIES AND STOCKHOLDERS' EQUITY 
Current liabilities:
   Accounts payable                 $    4,393                                4,393                                  4,393
   Retainage and construction payable    3,809                                3,809                                  3,809
   Current portion of long-term debt     1,860                                1,860                                  1,860
   Other current liabilities             5,034                                5,034                                  5,034
                                    ----------                           -----------                            ----------
           Total current liabilities    15,096                               15,096                                 15,096
Long-term debt                          18,097                               18,097                13,600    (a)    31,697
                                     ---------                           ----------              --------        ---------
   Total liabilities                    33,193                               33,193                13,600           46,793
                                     ---------                           ----------              --------        ---------
Minority interests                      10,392           (10,392)     (a)         -               (10,392)   (a)         -
                                     ---------          --------        ------------             --------      --------------
Stockholders' equity:
   Preferred stock                           -                                    -                                      -
   Common stock                            112                26      (b)       138                    13    (b)       125
   Additional paid in capital           10,309            31,026      (a)    41,309                17,077    (a)    27,373
                                                             (26)     (b)                             (13)   (b)
   Accumulated other
     comprehensive income                 (683)             (166)     (a)      (849)                 (166)   (a)      (849)
   Retained earnings                    75,464                               75,464                                 75,464
                                     ---------      -------------         ---------             ----------       ---------
                                        85,202            30,860            116,062                16,911          102,113
   Less treasury stock                 (30,144)                             (30,144)                               (30,144)
                                       -------      ------------            -------             ---------         --------
       Total Stockholders' equity       55,058            30,860             85,918                16,911           71,969
                                     ---------         ---------          ---------                ------        ---------
        Total liabilities and equity$   98,643            20,468            119,111                20,119          118,762
                                     =========         =========           ========                ======         ========
</TABLE>




                                       73
<PAGE>
                         Holdings, Inc. and Subsidiaries
              Unaudited Pro Forma Condensed Statements of Earnings
                      For the Year ended December 31, 1998
<TABLE>
<CAPTION>

                                                                                                     Assumes Stock and
                                            Holdings        Assumes All Stock Elections          Maximum Cash Elections
                                            Consolidated    ---------------------------          ----------------------  
                                            Historical      Adjustments      Pro Forma           Adjustments       Pro Forma
                                            ----------      -----------      ---------           -----------       ---------    
                                                                (in thousands except per share amounts)
<S>                                    <C>                  <C>           <C>                 <C>               <C>     
Sales                                     $  102,227                          102,227                              102,227
Cost of sales                                 56,720                           56,720                               56,720
                                          ----------                        ----------                            --------
   Gross profit                               45,507                           45,507                               45,507

Selling, general and administrative           33,550            (1,000)  (c)   33,661              (1,000)     (c)  33,793
                                                                 1,111   (d)                        1,243      (d)              
                                         -----------          ---------     --------------      ---------         --------
   Earnings (loss) from operations            11,957              (111)        11,846                (243)          11,714
Investment income-net                            861                              861                                  861
Interest expense                                 (70)                             (70)               (816)     (f)    (886)
Other income (expense)                           (42)                             (42)                                 (42)
                                       -------------        ----------        -------       -------------         --------
   Earnings (loss) before income taxes        12,706              (111)        12,595              (1,059)          11,647
Income taxes                                   5,839               340   (c)    6,179                 340      (c)   5,902
                                                                                                     (277)     (f)            
   Earnings (loss) before minority
      interests                                6,867              (451)         6,416              (1,122)           5,745
Minority interests                             1,719            (1,719)  (e)        --             (1,719)     (e)      --
                                        ------------            ------      ----------           --------         --------
   Net earnings                        $       5,148             1,268          6,416                 597            5,745
                                        ============        ==========        =======          ==========         ========


Basic earnings per share              $         0.53                             0.52                                 0.52
Diluted earnings per share                      0.52                             0.51                                 0.51

Weighted average common
   shares outstanding                      9,733,655         2,599,250      12,332,905          1,299,625       11,033,280
Weighted average common shares
   and common share equivalents
   outstanding                             9,733,655         2,734,424      12,468,079          1,434,799       11,168,454

</TABLE>

                                       74

<PAGE>
                       LAB HOLDINGS, INC. AND SUBSIDIARIES
           NOTES TO UNAUDITED PRO FORMA CONDENSED FINANCIAL STATEMENTS

(a)  Reflects the merger  transaction.  The excess of acquisition  cost over the
     estimated fair value of net assets acquired is computed as follows:

                                                                    Stock and
                                          All Stock               Maximum Cash 
                                          Elections                  Elections
                                          ---------               ------------
     Purchase price:
         Common stock                     $ 27,838                      13,919
         Cash                                   --                      16,570
         Transaction costs                   1,750                       1,750
         Fair value of stock 
           options and warrants              3,000                       3,000
                                           -------                     -------
                                            32,588                      35,239
     Estimated fair value of
           net assets acquired              10,370                      10,370
                                            ------                      ------
     Excess of acquisition cost
           over the estimated
           fair value of net assets
           acquired (goodwill)            $ 22,218                      24,869
                                            ======                      ======

     Assumes cash on hand of $3 million plus a note payable of $13.6 million are
     used to pay the  maximum of $16.6  million  for  one-half  of the  minority
     stockholders' shares under the maximum cash elections scenario.

(b)  Reflects the issuance of shares of the combined  company to LabOne minority
     stockholders.  (All stock elections - 2,599,250  shares;  stock and maximum
     cash elections - 1,299,625 shares)

(c)  Reflects  the  elimination  of  Holdings  redundant  overhead  expense  and
     corresponding tax benefit.

(d)  Reflects   amortization  of  the  goodwill  created  by  the  merger  on  a
     straight-line basis over 20 years.

(e)  Reflects the elimination of the minority interests share of earnings.

(f)  Reflects  interest  expense  resulting from the issuance of debt to finance
     the cash  portion of the  purchase  price and  corresponding  tax  benefit.
     Interest on the new debt is assumed to be 6%.

(g)  As a result of the merger,  Holdings' officers will resign and, as provided
     in  their   employment   agreements,   Holdings   will  incur   expense  of
     approximately  $500,000 in severance benefits.  See "Certain  Relationships
     and Related Transactions at page ___".

(h)  In connecton with the merger,  the number of authorized  shares of Holdings
     will increase from 24,000,000 shares of common stock to 40,000,000  shares.
     The par value of all  authorized  stock will also be changed from $1.00 per
     share to $0.01 per share.

                                       75
<PAGE>
                          INFORMATION REGARDING LABONE

BUSINESS

General

     LabOne,  a Delaware  corporation,  provides  laboratory  and  investigative
services  for  the  insurance  industry,   clinical  testing  services  for  the
healthcare industry and substance abuse testing services for employers.  LabOne,
Inc.,  together  with its  wholly-owned  subsidiaries  Lab One Canada  Inc.  and
Systematic Business Services, Inc. (SBSI),  hereinafter collectively referred to
as LabOne, is the largest provider of insurance  laboratory  testing services in
the United  States and Canada.  (See Note 8 of Notes to  Consolidated  Financial
Statements for financial information regarding foreign operations.)

     LabOne  provides  risk-appraisal   laboratory  services  to  the  insurance
industry.  The tests performed by LabOne are specifically  designed to assist an
insurance  company in objectively  evaluating the mortality and morbidity  risks
posed by  policy  applicants.  The  majority  of the  testing  is  performed  on
specimens of individual life insurance policy  applicants.  LabOne also provides
testing  services on specimens of individuals  applying for individual and group
medical and disability policies.

     Effective October 30, 1998, LabOne acquired  Systematic  Business Services,
Inc., a Missouri corporation. SBSI provides telephone inspections, motor vehicle
reports,  attending physician statements,  and claims investigation  services to
life and health insurers nationwide.

     LabOne's clinical testing services are provided to the healthcare  industry
as an aid in the diagnosis and treatment of patients.  LabOne  operates only one
highly  automated  and  centralized   laboratory,   which  LabOne  believes  has
significant economic advantages over other conventional  laboratory competitors.
LabOne   markets   its   clinical    testing   services   to   the   payers   of
healthcare-insurance companies and self-insured groups. LabOne does this through
exclusive arrangements with managed care organizations and through LabCard(R), a
Laboratory Benefits Management (LBM) program.

     LabOne is  certified  by the  Substance  Abuse and Mental  Health  Services
Administration   (SAMHSA)  to  perform  substance  abuse  testing  services  for
federally   regulated  employers  and  is  currently  marketing  these  services
throughout the country to both regulated and  nonregulated  employers.  LabOne's
rapid turnaround times and multiple testing options help clients reduce downtime
for affected employees and meet mandated drug screening guidelines.

Insurance Services

     Insurance  companies require an objective means of evaluating the insurance
risk posed by policy  applicants in order to establish the appropriate  level of
premium payments,  or to determine whether to issue a policy.  Because decisions
of this type are based on statistical  probabilities of mortality and morbidity,
insurance   companies   generally  require   quantitative  data  reflecting  the
applicant's general health.  Standardized  laboratory  testing,  tailored to the
needs of the  insurance  industry  and  reported in a uniform  format,  provides
insurance  companies  with an efficient  means of  evaluating  the mortality and
morbidity risks posed by policy applicants. The use of standardized blood, urine
and oral fluid testing has proven a cost-effective alternative to individualized
physician examinations, which utilize varying testing procedures and reports.


<PAGE>

     LabOne's  insurance  testing services consist of certain specimen  profiles
that provide  insurance  companies with specific  information  that may indicate
liver  or  kidney  disorders,  diabetes,  the  risk of  cardiovascular  disease,
bacterial or viral  infections and other health risks.  LabOne also offers tests
to detect the  presence of  antibodies  to human  immunodeficiency  virus (HIV).
Insurance companies generally offer a premium discount for nonsmokers

                                       76

and often rely on testing to determine whether an applicant is a user of tobacco
products.  Standardized  laboratory testing can be used to verify responses on a
policy  application  to such  questions  as whether the  applicant  is a user of
tobacco products,  certain controlled  substances or certain prescription drugs.
Cocaine use has been  associated  with  increased  risk of accidental  death and
cardiovascular  disorders,  and as a result of  increasing  cocaine abuse in the
United States and Canada,  insurance  companies are testing a greater  number of
policy applicants to detect its presence.  Therapeutic drug testing also detects
the presence of certain  prescription  drugs that are being used by an applicant
to treat a  life-threatening  medical  condition  that may not be  revealed by a
physical examination. Insurance specimens are normally collected from individual
insurance  applicants  by  independent   paramedical  personnel  using  LabOne's
custom-designed  collection kits and  containers.  These kits and containers are
delivered to LabOne's  laboratory via overnight delivery services or mail, coded
for  identification  and processed  according to each  client's  specifications.
Results  are  generally  transmitted  to the  insurance  company's  underwriting
department that same evening.  LabOne  provides a one-day  service  guarantee on
oral fluid and urine HIV specimen results.

     In  association  with Lincoln  National Risk  Management,  LabOne  provides
electronic data collection  services and software to enable insurance  companies
to receive data directly into their underwriting  systems.  LabOne offers LabOne
NET, a  combination  network/software  product that  provides a  connection  for
insurance  underwriters for ordering and delivery of risk assessment information
such as laboratory  results,  telephone  inspections,  motor vehicle reports and
other applicant  information.  LabOne handles paramedical  examination paperwork
and  assists   with   administration   of  data  for   insurance   underwriting.
Additionally,  LabOne  can  obtain  attending  physician  statements,  telephone
inspections, motor vehicle reports, and perform claims investigation through its
subsidiary, SBSI.

Clinical Services

     Clinical  laboratory tests are generally  requested by physicians and other
healthcare  providers  to  diagnose  and  monitor  diseases  and  other  medical
conditions  through the detection of  substances  in blood and other  specimens.
Laboratory testing is generally categorized as either clinical testing, which is
performed on bodily fluids  including blood and urine,  or anatomical  pathology
testing,  which is performed on tissue.  Clinical and anatomical pathology tests
are frequently  performed as part of regular physical  examinations and hospital
admissions in connection with the diagnosis and treatment of illnesses. The most
frequently  requested tests include blood chemistry analyses,  blood cholesterol
level tests, urinalyses, blood cell counts, PAP smears and AIDS-related tests.

     Clinical  specimens  are  collected  at the  physician's  office  or  other
specified  sites.  LabOne's  couriers  pick up the specimens and deliver them to
local  airports for express  transport to the Kansas  laboratory.  Specimens are
coded for  identification  and  processed.  LabOne's  testing menu  includes the
majority of tests  requested by its clients.  Tests not  performed  in-house are
<PAGE>

sent to reference  laboratories  for testing,  and results are transmitted  into
LabOne's computer system along with all other completed results.

     LabOne has established  the LabCard(R)  Program as a vehicle for delivering
outpatient  laboratory  services.  The LabCard Program is marketed to healthcare
payers  (self-insured  groups and insurance  companies),  allowing them to avoid
price  mark-ups  and cost  shifting.  The LabCard  Program  provides  laboratory
testing at reduced  rates as compared  to  traditional  laboratories.  It uses a
unique benefit design that shares the cost savings with the patient, creating an
incentive for the patient to help direct  laboratory  work to LabOne.  Under the
Program,  the patient incurs no out-of-pocket  expense when the LabCard is used,
and the insurance company or self-insured group receives  substantial savings on
its laboratory charges.

     LabOne has several exclusive  arrangements with managed care organizations.
The two most  significant  are  Principal  Healthcare  of  Kansas  City and Blue
Cross/Blue Shield of Tennessee.  With these arrangements,  LabOne contracts with
the managed care  organization,  and such  organizations  direct all testing for
their members through LabOne.

                                       77

Substance Abuse Testing Services:

     LabOne  markets  substance  abuse testing to large  companies,  third party
administrators  and  occupational  health  providers.  Certification  by  SAMHSA
enables LabOne to offer substance abuse testing services to federally  regulated
industries.

     Specimens   for  substance   abuse  testing  are  typically   collected  by
independent agencies who use LabOne's forms and collection  supplies.  Specimens
are sealed with bar-coded, tamper-evident seals and shipped overnight to LabOne.
Automated   systems   monitor  the  specimens   throughout   the  screening  and
confirmation  process.  Negative results are available immediately after testing
is   completed.   Initial   positive   specimens   are   verified   by  the  gas
chromatography/mass  spectrometry  method,  and results are generally  available
within 24 hours.  Results  can be  transmitted  electronically  to the  client's
secured computer, printer or fax machine, or the client can use LabOne's LabLink
Dial-In software to retrieve, store, search and print its drug testing results.









<PAGE>

Segment Information

     The following table summarizes  LabOne's revenues from services provided to
the  insurance,  clinical  and  substance  abuse  testing  markets  (dollars  in
thousands):


                                 Year ended December 31,
                  ------------------------------------------------------
                       1998            1997                  1996
                  -------------   --------------       -----------------
Insurance         $69,149   68%    $61,998   79%       $50,801       85%
Clinical           18,600   18%      7,512    9%         3,942        7%
Substance Abuse    14,478   14%      9,416   12%         4,689        8%
                   ------            -----               -----              
                $ 102,227        $  78,926           $  59,432
                =========        =========           =========

                  (See    Note 9 of Notes to Consolidated  Financial  Statements
                          for  operating  income  and  identifiable   assets  by
                          segment on page F-18)

Operations

     LabOne's  operations  are  designed  to  facilitate  the testing of a large
number of specimens  and to report the results to clients,  generally  within 24
hours  of  receipt  of  the   specimens.   LabOne  has   internally   developed,
custom-designed  laboratory and business processing systems. It is a centralized
network  system  that  provides  an  automated  link  between  LabOne's  testing
equipment,  data processing equipment and clients' computer systems. This system
offers  LabOne's  clients  the  ability to  customize  their  testing and reflex
requirements by several parameters to best meet their needs.

     As a result of the number of tests it has  performed  over the past several
years,  LabOne has compiled and maintains a large  statistical data base of test
results.  These summary  statistics are useful to the actuarial and underwriting
departments  of an insurance  client in comparing  that client's test results to
the results  obtained by  LabOne's  entire  client  base.  Company-specific  and
industry-wide reports are frequently  distributed to clients on subjects such as
coronary risk analysis,  cholesterol and drugs of abuse. Additionally,  LabOne's
statistical  engineering department is capable of creating customized reports to
aid managed care  entities or employers in disease  management  and  utilization
tracking to help manage healthcare costs.

     LabOne considers the  confidentiality  of its test results to be of primary
importance and has established procedures to ensure that results of tests remain
confidential as they are communicated to the client that requested the tests.


                                       78

     Substantially  all  of  the  reagents  and  materials  used  by  LabOne  in
conducting its testing are commercially purchased and are readily available from
multiple sources.




<PAGE>

Regulatory Affairs

     The  objective  of the  regulatory  affairs  department  is to ensure  that
accurate and reliable test results are released to clients. This is accomplished
by incorporating  both internal and external quality assurance  programs in each
area of the laboratory.  In addition,  quality  assurance  specialists share the
responsibility with all LabOne employees of an ongoing commitment to quality and
safety in all laboratory operations. Internal quality and education programs are
designed to identify opportunities for improvement in laboratory services and to
meet all required  safety  training and education  issues.  These  programs help
ensure the reliability and confidentiality of test results.

     Procedure  manuals in all areas of the laboratory help maintain  uniformity
and accuracy and meet regulatory guidelines. Tests on control samples with known
results are performed  frequently to maintain and verify accuracy in the testing
process.  Complete  documentation provides record keeping for employee reference
and meets regulatory requirements.  All employees are thoroughly trained to meet
standards  mandated  by OSHA in  order  to  maintain  a safe  work  environment.
Superblind  Testing  Service(TM)  controls are used to challenge every aspect of
service at LabOne from specimen arrival through final billing. Approximately 500
sample kits are prepared and  submitted  anonymously  each month.  These samples
have at least 15 different indicators each representing over 7,500 challenges to
the testing,  handling and reporting  procedures.  Specimens  requiring  special
handling are evaluated and verified by control  analysis  personnel.  A computer
edit program is used to review and verify  clinically  abnormal  results and all
positive  HIV  antibody  and  drugs-of-abuse  records.  As an  external  quality
assurance  program,  LabOne  participates  in a number of  proficiency  programs
established  by  the  College  of  American  Pathologists  (CAP),  the  American
Association of Bioanalysts and the Centers for Disease Control.
LabOne is accredited by CAP.

     Even  though  only  a  small  portion  of  LabOne's  business   encompasses
fee-for-service  Medicare/Medicaid,  LabOne  has  appointed  a Chief  Compliance
Officer and nine Co-Compliance Officers. Additionally,  LabOne has developed the
LabOne  Compliance  Plan,  based on the Model Compliance Plan recommended by the
Office of Inspector General (OIG) of the Department of Health and Human Services
to  ensure  compliance  with  anti-fraud  and  abuse  laws and  rules  governing
federally-financed reimbursement for lab testing services.

     LabOne is licensed  under the Clinical  Laboratory  Improvement  Amendments
(CLIA) of 1988. LabOne has additional  licenses for substance abuse testing from
the state of Kansas and all other  states  where  such  licenses  are  required.
LabOne is  certified  by SAMHSA to perform  testing to detect  drugs of abuse in
federal employees and in workers governed by federal regulations.

Sales and Marketing

     LabOne's  client base  consists  primarily  of  insurance  companies in the
United States and Canada. LabOne believes that its ability to provide prompt and
accurate results on a cost-effective  basis, and its  responsiveness to customer
needs have been important factors in servicing existing business.

     All of  LabOne's  sales  representatives  for  the  insurance  market  have
significant   business   experience  in  the  insurance   industry  or  clinical
laboratory-related  fields. These  representatives call on major clients several
times each year,  usually  meeting with a medical  director or vice president of
underwriting.  An important part of LabOne's marketing effort is directed toward
providing its existing clients and prospects with information  pertaining to the
<PAGE>

actuarial  benefits  of, and  trends  in,  laboratory  testing.  LabOne's  sales
representatives  and its senior  management  also attend and  sponsor  insurance
industry underwriters' and medical directors' meetings.

     The sales  representatives for the clinical industry are experienced in the
healthcare benefit market or clinical

                                       79
laboratory-related fields, and currently work in the geographic areas which they
represent.  Marketing efforts are directed at insurance  carriers,  self-insured
employers  and  trusts,  third  party  administrators  and  other  organizations
nationwide.

     Substance  abuse marketing  efforts are primarily  directed at Fortune 1000
companies, occupational health clinics and third party administrators.  LabOne's
strategy is to offer  quality  service at  competitive  prices.  The sales force
focuses on LabOne's ability to offer multiple reporting methods, next-flight-out
options,  dedicated  client  service  representatives  and  rapid  reporting  of
results.

Competition

     LabOne believes that the insurance  laboratory testing market in the US and
Canada is approximately a $130 million industry.  LabOne currently services more
than half the market.  LabOne has maintained its market  leadership  through the
development  of long term client  relationships,  its  reputation  for providing
quality  products and services at competitive  prices,  and its battery of tests
which are tailored  specifically to an insurance company's needs. LabOne has two
other main  laboratory  competitors,  Osborn  Laboratories,  Inc.  and  Clinical
Reference Laboratory.

     The insurance  testing  industry  continues to be highly  competitive.  The
primary focus of the competition has been on pricing. This continued competition
has resulted in a decrease in LabOne's average price per test. It is anticipated
that  prices  may  continue  to  decline in 1999.  LabOne  continues  to develop
innovative  data  management  services  that  differentiate  its  products  from
competitors. These services enable LabOne's clients to expedite the underwriting
process, saving time and reducing underwriting costs.

     The outpatient clinical laboratory testing market is a $20 billion industry
which is highly fragmented and very  competitive.  LabOne faces competition from
numerous  independent  clinical  laboratories  and hospital- or  physician-owned
laboratories.  Many of LabOne's  competitors are  significantly  larger and have
substantially  greater  financial  resources  than LabOne.  LabOne is working to
establish a solid client base  through the use of LabCard and the  establishment
of exclusive  arrangements to provide laboratory  services with large groups and
managed care entities.

     LabOne's  business  plan is to be the  low-cost  provider  of  high-quality
laboratory  services to  self-insured  employers and insurance  companies in the
healthcare  market.  LabOne  feels that its  superior  quality and  centralized,
low-cost operating structure enable it to compete effectively in this market.

     LabOne competes in the substance abuse testing market nationwide. There are
presently 71 laboratories that are SAMHSA certified.  LabOne's major competitors
are the three major clinical chains,  Laboratory  Corporation of America,  Quest
Diagnostics and Smith Kline Beecham  Laboratories,  who collectively  constitute
approximately  two-thirds of the substance abuse testing market.  LabOne's focus
<PAGE>

is fast turnaround with high-quality, low-cost service.


                                       80
Foreign Markets

     Lab One Canada Inc. markets insurance testing services to Canadian clients,
with  laboratory  testing  performed in the United States.  The following  table
summarizes  the  revenue,  profit and assets  applicable  to  LabOne's  domestic
operations and its subsidiary, Lab One Canada Inc.


                                          Year ended December 31,
                                              (in millions)
                               ---------------------------------------------

                               1998               1997*                  1996
                               ----               ----                   ----
Sales:
     United States             $95.7              $72.4                 $53.1
     Canada                      6.5                6.6                   6.4
Operating Profit:
     United States              14.2                2.0                   2.4
     Canada                      0.3                0.6                   0.7
Identifiable Assets:
     United States              83.8               56.8                  62.1
     Canada                      2.8                3.2                   2.7

*    1997 operating profit includes a one-time  write-off of $6.6 million.  (See
     Note 1 of Notes to Consolidated Financial Statements.)

Technology Development

         The  technology   development  department  evaluates  new  commercially
available tests and technologies,  or develops new assays,  and compares them to
competing products in order to select the most accurate  laboratory  procedures.
Additionally,  LabOne's  scientists  present  findings to clients to aid them in
choosing the best tests available to meet their  requirements.  Total technology
development expenditures are not considered significant to LabOne as a whole.

Employees

         As of March 1, 1999,  LabOne had 895 employees,  including 23 part-time
employees, representing an increase of 230 employees from the same time in 1998.
The addition of SBSI accounts for  approximately  65% of the  increase.  None of
LabOne's  employees  are  represented  by a labor  union.  LabOne  believes  its
relations with employees are good.

PROPERTIES

         On December 26, 1998, LabOne started moving into its new 268,000 square
foot, custom-designed facility located in Lenexa, Kansas, approximately 15 miles
from Kansas City,  Missouri.  This facility  consolidates  LabOne's  laboratory,
administrative and warehouse functions into one building.  The facility is owned
by LabOne under a capital  lease and financed  through $20 million in industrial
revenue  bonds  issued by the City of Lenexa,  Kansas in  September,  1998.  The
testing  laboratory  has certain  enhancements  that improve the  efficiency  of
operations. Conveyor systems transport inbound test kits from the receiving area
<PAGE>

to the  laboratory  and remove waste after the opening  process.  All  automated
testing equipment  requiring  purified water is linked directly to a centralized
water-purification  system.  Over 50,000 square feet of raised  flooring  allows
laboratory  instruments and PCs to be arranged or moved quickly and easily.  The
security system includes proximity card readers to

                                       81
control access and a ceiling detector system to prevent foreign  substances from
being thrown into the laboratory. In addition, three diesel generators and a UPS
battery  system are on-line in the event of  electrical  power  shortage.  These
back-up  power sources allow  specimen  testing and data  processing to continue
until full power is  restored,  thus  assuring  LabOne's  clients of  continuous
laboratory operation.

         SBSI utilizes two facilities in Independence,  Missouri under five year
leases expiring in 2003. LabOne leases 10 locations in Northern California and 9
in the Midwest which serve as LabOne Service  Centers (LSCs).  These  facilities
provide specimen  collection  services for patients and are typically located in
medical office buildings.

     Lab One Canada Inc.  leases office space in Ontario  Canada,  which is used
for sales and client services. This lease expires in 2000. Additionally, Lab One
Canada,  Inc.  leases space in Quebec  Canada for assembly and  distribution  of
specimen  collection kits for Canadian insurance testing.  This lease expires in
2000.

         LabOne also owns two buildings which are currently under contract to be
sold in the  first  and  second  quarter  of 1999.  Prior to  moving  to the new
facility,  these buildings were used for laboratory  operations,  administrative
offices and data  processing.  LabOne's lease on its former  warehouse  facility
expired in February 1999.

LITIGATION

         In the normal course of business,  LabOne had certain  lawsuits pending
at December 31, 1998.

         The  Comptroller of the State of Texas has conducted an audit of LabOne
for sales tax compliance and contends that LabOne's insurance laboratory testing
services  are  taxable  under  the  Texas  tax  code  and has  issued  an  audit
assessment,  including  interest and penalties,  of approximately  $1.9 million.
LabOne has appealed this assessment  arguing that its services do not fit within
the definition of insurance services under the Texas code.
The assessment is under review by the Texas State Hearing Attorney.

         In the opinion of management, after consultation with legal counsel and
based upon currently available information,  none of these lawsuits are expected
to have a material  impact on the  business,  financial  condition or results of
operations of LabOne.  No provisions for loss related to litigation are included
in the accompanying consolidated financial statements.








<PAGE>
            LABONE MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                       CONDITION AND RESULTS OF OPERATIONS

RESULTS OF OPERATIONS

1998 Compared to 1997

         Revenue  for the year ended  December  31,  1998 was $102.2  million as
compared to $78.9 million in 1997.  The increase of $23.3  million,  or 30%, was
due to  increases in clinical  laboratory  revenue of $11.1  million,  insurance
services  revenue of $7.2  million  and SAT  revenue of $5.1  million.  Clinical
laboratory  revenue  increased from $7.5 million during 1997 to $18.6 million in
1998 primarily due to increased testing volumes.  The insurance services segment
revenue  increased  from $62 million in 1997 to $69.1 million due to an increase
in the total  number of  insurance  applicants  tested  and an  increase  in non
laboratory  services,  including SBSI,  partially offset by a 3% decrease in the
average revenue per applicant.  SAT revenue  increased from $9.4 million in 1997
to $14.5 million in 1998 primarily due to a 48% increase in testing volumes.

     Cost of sales increased $14.7 million,  or 35%, for the year as compared to
the prior year. This growth

                                       82

is primarily due to increases in inbound  freight,  laboratory  and kit supplies
and payroll  expenses due to the larger  specimen  volume for all three business
segments.  Insurance  segment  cost of sales  expenses  were  $32.3  million  as
compared to $26.7  million  during 1997.  Clinical  cost of sales  expenses were
$14.5  million  as  compared  to $8.3  million  during  1997.  SAT cost of sales
expenses were $9.9 million as compared to $7 million during 1997.
These increases are due to increased testing volumes.

         As a result of the above factors,  gross profit increased $8.6 million,
or 23%,  from $36.9 million in 1997 to $45.5  million in 1998.  Insurance  gross
profit increased $1.5 million,  or 4%, to $36.9 million in 1998.  Clinical gross
profit  improved  $4.9  million from a loss of $0.8 million in 1997 to a gain of
$4.1 million in 1998.
SAT gross profit increased $2.2 million to $4.5 million in 1998.

         Selling, general and administrative expenses increased $3.3 million, or
12%, in 1998 as compared to 1997 primarily due to increases in payroll  expenses
and bad debt  accruals.  Clinical  overhead  expenditures  were $10.3 million as
compared to $7.5 million in 1997.  SAT overhead  increased  from $3.3 million in
1997 to $4.3  million  in 1998.  These  increases  are due to the growth in each
segment.  The allocation of corporate  overhead to the clinical and SAT segments
increased to $5.3 million for the year, as compared to $3.3 million in 1997, due
to the increased share of total revenue for those segments.  Insurance  overhead
expenditures decreased to $16.3 million as compared to $16.8 million in 1997.

         In 1997,  LabOne recorded a one-time  write-down of $6.6 million on the
value of the laboratory and  administrative  buildings in  anticipation of their
sale. (See Note 1 of Notes to Consolidated Financial Statements.)

         Operating  income  increased from $2.6 million in 1997 to $14.5 million
in 1998. The insurance  services segment operating income increased $2.1 million
to $20.6  million in 1998.  The clinical  segment had an operating  loss of $6.2
million for 1998 as compared to an operating  loss of $8.3 million in 1997.  The
SAT segment improved from an operating loss of $0.9 million in 1997 to a gain of
$0.2 million in 1998.
<PAGE>

         Other  income  decreased  $0.4  million  in 1998 as  compared  to 1997,
primarily due to lower  investment  income due to less funds being  available to
invest.  Average  income  tax  expense  was  39.3% of  pretax  income in 1998 as
compared to 41.6% in 1997.  The  reduction  is  primarily  due to an increase in
LabOne's  income  from U.S.  sources  taxed at U.S.  rates as compared to income
taxed at higher foreign rates.

         The combined  effect of the above  factors  resulted in net earnings of
$9.2 million,  or $0.69 per share, in 1998 as compared to $2.2 million, or $0.17
per share, in 1997.  Excluding the impact of the write-down in 1997, last year's
net earnings would have been $6.1 million, or $0.46 per share.

1997 Compared to 1996

         Revenue  for the year  ended  December  31,  1997 was $78.9  million as
compared to $59.4 million in 1996. The increase of $19.5 million, or 33%, is due
to increases in insurance segment revenue of $11.2 million,  SAT revenue of $4.7
million and clinical  laboratory revenue of $3.6 million.  The insurance segment
increased  22% due to an increase in the total  number of  insurance  applicants
tested and an increase in kit revenue,  partially offset by a 1% decrease in the
average  revenue per  applicant.  The increase in insurance  segment  revenue is
primarily due to an increase in market share and changes to testing  thresholds.
Effective January 30, 1997, LabOne acquired certain assets,  including  customer
lists, of GIB Laboratories,  Inc., a subsidiary of Prudential  Insurance Company
of America. Concurrently,  Prudential's Individual Insurance Group agreed to use
LabOne as its exclusive  provider of risk assessment  testing  services.  At the
time of the purchase,  GIB served  approximately 5% of the insurance  laboratory
testing market.  SAT revenue increased from $4.7 million in 1996 to $9.4 million
in 1997 due to a  doubling  in  testing  volumes.  Clinical  laboratory  revenue
increased  from $3.9  million in 1996 to $7.5  million in 1997 due to  increased
testing volumes and higher revenue per patient.

     Cost of sales  increased $9.3 million,  or 28%, for the year as compared to
the prior year. This increase

                                       83

is due primarily to increases in payroll,  laboratory  supplies and kit expenses
due to the larger  specimen volume for all three business  segments.  Direct and
allocated  clinical cost of sales expenses were $8.3 million as compared to $6.5
million  during 1996.  Direct and allocated  SAT cost of sales  expenses were $7
million as compared to $3.7 million  during  1996.  These  increases  are due to
increased testing volumes.

         As a result of the above factors, gross profit increased $10.2 million,
or 38%,  from $26.7 million in 1996 to $36.9  million in 1997.  Insurance  gross
profit  increased  $7 million,  or 25% , in 1997 as  compared to 1996.  Clinical
gross profit improved $1.8 million from a loss of $2.6 million in 1996 to a loss
of $0.8 million in 1997.  SAT gross profit  increased from $1 million in 1996 to
$2.4 million in 1997.

         Selling, general and administrative expenses increased $4.1 million, or
17%, in 1997 as compared to 1996 due primarily to increases in payroll expenses,
travel and  amortization  expenses.  Clinical  overhead  expenditures  were $7.5
million as compared to $5.4 million in 1996.  SAT overhead  increased  from $2.2
million in 1996 to $3.3 million in 1997.  These  increases are due to the growth
in each segment.

<PAGE>

         In 1997,  LabOne recorded a one-time  write-down of $6.6 million on the
value of the laboratory and  administrative  buildings in  anticipation of their
sale. (See Note 1 of Notes to Consolidated Financial Statements.)

         Operating income decreased from $3.1 million in 1996 to $2.6 million in
1997,  primarily  due to the $6.6  million  write down,  partially  offset by an
increase in the insurance segment operating income of $5.9 million. The clinical
segment had an operating  loss of $8.3 million for 1997 as compared to a loss of
$8  million  in 1996,  due to a $0.6  million  increase  in  corporate  overhead
allocation  over 1996.  The SAT segment  improved from an operating loss of $1.2
million in 1996 to a loss of $0.9  million  in 1997,  including  a $0.9  million
increase in corporate overhead allocation over last year.

         Other income decreased $0.7 million in 1997 as compared to 1996, due to
lower investment  income.  Average income tax expense was 41.6% of pretax income
in 1997 as compared to 41.2% in 1996.

         The combined  effect of the above  factors  resulted in net earnings of
$2.2 million,  or $0.17 per share, in 1997 as compared to $2.9 million, or $0.22
per share, last year.  Excluding the impact of the write-down,  net income would
have been $6.1 million, or $0.46 per share, in 1997.

TRENDS

         The following is management's  analysis of certain existing trends that
have been identified as potentially  affecting the future  financial  results of
LabOne. Due to the potential for a rapid rate of change in any number of factors
associated with the insurance and healthcare  laboratory testing industries,  it
is difficult to quantify with any degree of certainty  LabOne's  future volumes,
sales or net earnings.

         The  insurance  laboratory  testing  industry  continues  to be  highly
competitive.  The primary focus of the competition  has been on pricing.  LabOne
continues to maintain its market  leadership by providing  quality  products and
services at competitive  prices.  Management expects that prices may continue to
decline during 1999 due to competitive pressures. This trend may have a material
impact on earnings from operations.

         The total number of insurance applicants tested by LabOne increased 11%
in 1998 from the prior year.  Approximately 80% of the increase represented oral
fluid HIV tested  applicants.  The number of oral fluid  tested  applicants  are
expected to further increase in 1999.

         Effective  October  30,  1998,  LabOne  acquired   Systematic  Business
Services,  Inc.  (SBSI)  which is operated as a wholly owned  subsidiary  of the
insurance  services  division  of  LabOne.  SBSI is a  provider  of  information
services  to life and health  insurers  nationwide,  and has annual  revenues of
approximately  $7 million.  With 148  employees  in the Kansas  City area,  SBSI
provides telephone inspections, motor vehicle reports,

                                       84

attending  physician  statements,  and  claims  investigation  services  to life
insurance  companies.  This  addition  allows  LabOne to expand the  services it
offers to its insurance industry clients.



<PAGE>

         In the clinical  division,  BlueCross  BlueShield of Tennessee selected
LabOne to provide routine  outpatient  laboratory  testing services for BlueCare
members throughout  Tennessee  effective February 1, 1998. BlueCare is BlueCross
BlueShield of Tennessee's plan for Tenncare participants.  Approximately 400,000
BlueCare members are currently  covered by the program.  To date, the Laboratory
Benefit Management  programs,  including BlueCare and the LabCard Program,  have
more than 2.3  million  lives  enrolled.  In the fourth  quarter,  revenue  from
LabCard  accounts that have been active for more than one year rose 60% over the
fourth quarter, 1997.

         LabOne's new facility was financed through the City of Lenexa,  Kansas,
with industrial revenue bonds. In conjunction with the bonds,  LabOne expects to
receive  income  tax  credits  through  the  State of  Kansas  High  Performance
Incentive Plan to be applied  against state income taxes for up to 10 years,  or
until the credit is completely  used. The amount of the credit is expected to be
approximately  $4 million,  and will lower LabOne's  average income tax rate for
the duration of the credit.

LIQUIDITY AND CAPITAL RESOURCES

         LabOne's  working  capital  position  declined  from  $35.4  million at
December 31, 1997,  to $25.9  million at December  31,  1998.  This  decrease is
primarily  due to  dividends  paid and  capital  additions,  including  building
payments,  in excess of bond proceeds and cash provided by operations.  Net cash
provided  by  operations  increased  from $8.1  million in 1997 to $9 million in
1998.

         During 1998, LabOne paid quarterly dividends of $0.18 per common share.
The Board of Directors reviews this policy on a periodic basis. The total amount
of dividends  paid during 1998 was $0.72 per share,  or $9.5 million,  which was
$0.5  million  in  excess  of net cash  provided  by  operations.  There  are no
restrictions that would limit LabOne's ability to make future dividend payments.

         During 1998,  LabOne  invested  $28.5 million in  additional  property,
plant,  equipment and acquisitions as compared to $11.5 million in 1997 and $3.2
million in 1996.  Of the amount spent in 1998,  approximately  $21.6 million was
for  construction  LabOne's  new  facility,  and  $3.0  net cash was used in the
purchase of SBSI.  The 1997 amount  included land  purchased  related to the new
facility and the GIB  Laboratories  acquisition.  Future capital asset purchases
are expected to be approximately $3 million to $4 million annually.

         LabOne had no short-term  borrowings during 1998. Management expects to
be able  to  fund  operations  and  future  dividend  payments,  if any,  from a
combination  of cash flow from  operations,  cash  reserves,  building sales and
short-term  borrowings.  Interest  on the  industrial  revenue  bonds  issued to
finance the  construction  of LabOne's new facility is based on a taxable  seven
day variable rate which,  including  letter of credit and  remarketing  fees, is
approximately  5.8% as of March  1,  1999.  The  bonds  mature  over 11 years in
increments of $1.85 million per year plus interest.  Total cash and  investments
at December  31,  1998,  were $10.2  million,  as  compared to $19.5  million at
December 31, 1997.

YEAR 2000

         LabOne is actively  addressing Year 2000 computer concerns.  LabOne has
established an oversight  committee which includes  management from all parts of
LabOne and meets periodically to review progress.  LabOne's laboratory operating
systems and its business processing systems were completely rewritten as of 1991
<PAGE>

and were brought  into  compliance  with Year 2000 date  standards at that time.
Non-IT  systems,  which include  security  systems,  time clocks and heating and
cooling systems,  have been replaced with certified compliant systems as part of
construction of the new facility.  Ongoing remediation efforts include regularly
scheduled software upgrades and replacement of personal computers and associated
equipment.   LabOne  expects  to  complete  all  remaining  internal  Year  2000
objectives by the end of the second quarter, 1999.

                                       85
         LabOne is assessing the Year 2000 preparation and contingency  plans of
LabOne's clients and vendors. LabOne has material relationships and dependencies
with its primary telecommunications provider, Sprint Corp., its inbound shipping
provider,  Airborne Express, and municipal services providers. In the event of a
service  interruption,  LabOne  has the  ability  to  switch  telecommunications
services to AT&T at any time, and maintains backup electrical generators capable
of meeting its electrical needs. LabOne currently tracks and controls routing of
its inbound  specimens and can use USPS,  airlines and other common  carriers or
express  delivery  services  in the event of  delivery  problems  with  Airborne
Express.  LabOne currently  maintains  approximately  eight weeks supply of most
laboratory  supplies,  and does not expect  significant  problems  in  obtaining
supplies. LabOne continues to review the Year 2000 plans of these providers, and
does not currently expect significant  problems in these areas,  however,  there
can be no assurance that the systems of clients and vendors will be converted to
address  Year  2000  problems  in a timely  and  effective  manner  or that such
conversions will be compatible with LabOne's computer systems.

         Resources  dedicated to the remaining  effort are expected to cost less
than $0.3  million and are not  considered a material  expense to LabOne.  These
efforts  have not caused delay to LabOne's  other  ongoing  information  systems
projects.  LabOne has not hired any  outside  consultants  or other  independent
validation provider at this time, and does not expect to do so.

         There can be no assurance  that  LabOne's  adjustments  to its computer
systems will  completely  eliminate all Year 2000 problems.  Failure to properly
address the Year 2000 problem could have a material  adverse  effect on LabOne's
business, financial condition and results of operations.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

         A  foreign  currency  risk  exposure  exists  due to  billing  Canadian
subsidiary  revenue  in  Canadian  dollars  and the direct  laboratory  expenses
associated with this revenue being incurred in US dollars.  This exposure is not
considered to be material.  Any future material Canadian  currency  fluctuations
against  the US  dollar  could  result in a  decision  to hedge  future  foreign
currency cash flows, or to increase Canadian prices.

         An interest rate risk exposure exists due to LabOne's  liability of $20
million in industrial  revenue  bonds.  The interest  expense  incurred on these
bonds is based on a taxable seven day variable rate,  which including  letter of
credit and  remarketing  fees, is  approximately  5.8% as of March 1, 1999. This
exposure is not considered material. Any future increase in interest rates would
result in  additional  interest  expense and could result in a decision to enter
into a long-term interest rate swap transaction.



                                       86

<PAGE>
                              MANAGEMENT OF LABONE

LabOne Directors and Executive Officers

         The directors and executive officers of LabOne are as follows:

Name                    Age                Position

W. Thomas Grant II      48    Chairman of the Board of Directors, President,
                               Chief Executive Officer and Director
Gregg R. Sadler, FSA    48    Executive Vice President - Administration,
                               President - Insurance Laboratory Division,
                               Secretary and Director
Robert D. Thompson      37    Executive Vice President, Chief Operating Officer,
                               Chief Financial Officer and Director
Roger K. Betts          56    Executive Vice President - Sales - Insurance
                               Laboratory Division
Thomas J. Hespe         42    Executive Vice President - Sales and Marketing and
                               Director
Carl W. Ludvigsen, Jr.  46    Executive Vice President - Corporate Development
  M.D., Ph.D., J.D.,           and Chief Medical Officer
  FCAP, FCLM
Michael A. Peat, Ph.D.  51    Executive Vice President - Toxicology
Thomas H. Bienvenu II   49    Executive Vice President - Information Systems and
                               Technology
Judith A. VonFeldt      52    Executive Vice President - Human Resources
Kurt E. Gruenbacher,    39    Vice President - Finance, Chief Accounting Officer
  CPA, CMA, CFM                Treasurer
Joseph H. Brewer, M.D.  47    Director
William D. Grant        82    Director
Richard A. Rifkind, M.D.68    Director
Richard S. Schweiker    72    Director
James R. Seward         46    Director
John E. Walker          60    Director
R. Dennis Wright, Esq.  56    Director

     The terms of office of the  directors  of LabOne  will  expire upon the
election of their  successors at the LabOne annual meeting.  Executive  officers
serve at the pleasure of the Board of Directors.

     Mr. W. Thomas Grant II has been a director of LabOne since 1983.  Mr. Grant
was appointed Chairman of the Board of Directors,  President and Chief Executive
Officer  of LabOne in  October  1995.  He  served  as  Chairman  of the Board of
Holdings  from May 1993 to  September  1997.  Mr.  Grant is also a  director  of
Commerce Bancshares, Inc., Kansas City Power & Light Company, Response Oncology,
Inc. and AMC Entertainment, Inc. He is the son of W. D. Grant.

     Mr.  Sadler  has been a  director  of LabOne  since  1985.  Mr.  Sadler was
appointed  President-Insurance  Laboratory  Division in 1994 and Executive  Vice
President-Administration in 1993. Mr. Sadler has served as Secretary since 1988.

     Mr.  Thompson  has been a director of LabOne since 1995.  Mr.  Thompson was
appointed  Chief  Operating  Officer in May 1997 and Executive  Vice President -
Finance and Chief Financial Officer in December

                                       87



<PAGE>

1993. He served as Treasurer  from December 1993 to November 1997, and served as
Vice President-Business Development Planning from August 1993 to December 1993.

     Mr. Betts was appointed Executive Vice President-Sales-Insurance Laboratory
Division  in  1994.  From  1993  to  1994,  Mr.  Betts  served  as  Senior  Vice
President-Sales of the Insurance Laboratory Division.

     Mr. Hespe has been a director of LabOne since 1995. Mr. Hespe was appointed
Executive Vice  President - Sales and Marketing in 1995.  From 1990 to 1995, Mr.
Hespe  served as  Executive  Vice  President  Sales and  Marketing  of Allscrips
Pharmaceuticals,   Vernon  Hills,   Illinois,  a  distributor  of  managed  care
pharmaceutical  products and services with annual revenues of approximately  $70
million.  Mr.  Hespe's   responsibilities  with  Allscrips  included  developing
strategies  for market  expansion  and  developing  business  with  managed care
organizations,  including hospitals, physicians, HMO organizations,  third party
administrators,   consulting   firms,   self-insured   employers  and  insurance
companies.

     Dr. Ludvigsen has served as Executive Vice President-Corporate  Development
and Chief Medical  Officer  since  December  1996.  He served as Executive  Vice
President-Operations  and Chief Operating Officer from December 1993 to November
1996.

     Dr. Peat was appointed Executive Vice President-Toxicology in May 1996. Dr.
Peat  served as Senior  Vice  President-Toxicology  from 1994 to 1996.  Prior to
joining  LabOne in 1994,  Dr. Peat was Vice  President  of  Toxicology  of Roche
Biomedical Laboratories, Inc., Research Triangle Park, North Carolina.

     Mr. Bienvenu was appointed  Executive Vice President-  Information  Systems
and  Technology  in May 1997.  Mr.  Bienvenu  served as Senior  Vice  President-
Information  Systems  and  Technology  from  1994 to  1997.  He  served  as Vice
President- Marketing Information  Technology from October 1994 to December 1994.
Prior  to  October  1994,  he  served  as  Director  of  Marketing   Information
Technology.

     Ms. VonFeldt has served as Executive Vice President - Human Resources since
August 1998. She served as Senior Vice President - Human Resources from May 1997
to August 1998, and as Vice President Human Resources from September 1993 to May
1997.

     Mr. Gruenbacher was appointed  Treasurer in November 1997. He was appointed
Vice President-Finance and Chief Accounting Officer in May 1995. Mr. Gruenbacher
served as  Corporate  Controller  from  1994 to 1995,  and  Director,  Financial
Analysis and Budgets from 1993 to 1994.

     Dr.  Brewer has been a director of LabOne since 1988.  During the past five
years,  Dr.  Brewer has been an  Infectious  Disease  Specialist  at St.  Luke's
Hospital,  Kansas City, Missouri and an Assistant Clinical Professor of Medicine
at the University of Missouri - Kansas City

     Mr. William D. Grant has been a director of LabOne since 1989. Mr. Grant is
retired.  From  August  1990 to  December  1997,  he served as a  consultant  to
Holdings and served as Chairman of the Board of Holdings  prior to May 1993.  He
is the father of W. Thomas Grant II.

     Dr.  Rifkind has been a director of LabOne since 1987. Dr. Rifkind has been
Chairman  of the  Sloan-  Kettering  Institute,  New York,  New York,  a medical
research institution, during the past five years.
<PAGE>

     Mr.  Schweiker has been a director of LabOne since 1995. Mr.  Schweiker has
been retired for the past five years.  Prior to his  retirement,  Mr.  Schweiker
served as President of the American Council of Life Insurance, Washington, D.C.,
a life insurance trade  association.  Mr.  Schweiker is also a director of Tenet
Healthcare Corporation.

                                       88

     Mr.  Seward has been a director of LabOne since 1995.  Mr.  Seward has been
self-employed  as an investment  adviser and consultant  since August 1998. From
December 1996 to August 1998,  Mr. Seward served as President,  Chief  Executive
Officer and a director of SLH  Corporation,  Shawnee Mission,  Kansas,  an asset
management  company.  SLH Corporation was a wholly-owned  subsidiary of Holdings
prior to its spin-off in March 1997. He was Executive Vice President of Holdings
from 1993-1997 and served as its Chief  Financial  Officer from  1990-1997.  Mr.
Seward is also a director of Response Oncology, Inc., Syntroleum Corporation and
Concorde Career Colleges.

     Mr. Walker has been a director of LabOne since 1984.  Mr. Walker retired as
Managing Director- Reinsurance of Business Men's Assurance Company of America in
1996.  Mr.  Walker  served as Vice  Chairman of the Board of Directors of LabOne
prior to 1994.

     Mr. Wright has been a director of LabOne since 1987.  Mr. Wright has been a
partner in the law firm of  Morrison & Hecker  L.L.P.,  Kansas  City,  Missouri,
since  September  1998.  Mr.  Wright was a member of Hillix,  Brewer,  Hoffhaus,
Whittaker & Wright,  L.L.C., Kansas City, Missouri and Chairman of its Executive
Committee prior to its merger with Morrison & Hecker,  L.L.P. in September 1998.
Morrison & Hecker, L.L.P. is general counsel to LabOne.

                                       89







<PAGE>
                                     LABONE
                             EXECUTIVE COMPENSATION
Summary Compensation Table

                  The  following  table  provides  certain  summary  information
concerning  compensation  paid or  accrued  by LabOne to or on behalf of (i) the
person who served as its chief  executive  officer during 1998 and (ii) the four
most  highly  compensated  executive  officers  other  than the chief  executive
officer serving as of December 31, 1998, for services rendered in all capacities
to LabOne  and its  subsidiaries  for each of the last  three  completed  fiscal
years.
<TABLE>
<CAPTION>
                                                                                    
                                                                                Long-Term
                                                Annual Compensation           Compensation
Name and                           Fiscal    -------------------------      Stock Option Shares        All Other
Principal Position                  Year      Salary ($)      Bonus ($)         Granted (#)       Compensation ($) (1)
- ------------------                  ----      ----------      ---------         -----------       --------------------
<S>                              <C>         <C>            <C>               <C>                    <C>    

W. Thomas Grant II                  1998        164,769        107,261              -0-                  21,670
Chairman of the                     1997         86,019        131,173            75,000                  9,922
Board of Directors,                 1996          -0-            -0-                -0-                   -0-
President and Chief
Executive Officer

Robert D. Thompson                  1998        217,627        157,261              -0-                  16,696
Executive Vice President,           1997        209,900        131,173              -0-                  16,856
Chief Operating and                 1996        209,277         75,000              -0-                  17,086
Financial Officer

Carl W. Ludvigsen, Jr.              1998        239,781         42,661              -0-                  21,670
Executive Vice President -          1997        230,900        131,173              -0-                  21,470
Corporate Development and           1996        230,277         25,000              -0-                  20,634
Chief Medical Officer

Thomas J. Hespe                     1998        165,704        107,261              -0-                  21,371
Executive Vice                      1997        159,900        131,173              -0-                  21,470
President-Clinical                  1996        159,277         50,000              -0-                  20,490
Marketing & Sales Division

Gregg R. Sadler                     1998        165,704        107,261              -0-                  21,670
Executive Vice                      1997        156,900        131,173              -0-                  21,865
President-Administration            1996        150,277         50,000              -0-                  20,923
and Secretary & President
Insurance Laboratory Div.
</TABLE>

(1)  The amounts shown in this column for 1998 consist of (a)  contributions  by
     LabOne  to the  account  of  each of the  named  executive  officers  under
     LabOne's defined  contribution  pension plan in the amount of $16,421;  (b)
     50% matching  contributions by LabOne under LabOne's  profit-sharing 401(k)
     plan in the  amount of $4,526 to the  accounts  of each of  Messrs.  Grant,
     Ludvigsen,  Hespe and Sadler,  and (c) insurance premium payments by LabOne
     with  respect to group term life  insurance  in the amounts of $723 for the
     benefit  of each of  Messrs.  Grant,  Ludvigsen  and  Sadler,  $274 for the
     benefit of Mr. Thompson and $424 for the benefit of Mr. Hespe.
                                        90
<PAGE>
Aggregate Option Exercises and December 31, 1998 Option Value Table

         The  following  table  provides  certain  information   concerning  the
exercise of stock options  during 1998 by each of the named  executive  officers
and the number and value of unexercised options held by such persons on December
31, 1998.
<TABLE>
<CAPTION>
                                                                 Number of
                                                                 Shares                          Value of
                                                                 Underlying                      Unexercised
                                                                 Unexercised                     In-the-Money
                                                                 Options on                      Options on
                                                                 December 31, 1998 (#)          December 31, 1998 ($)
                                                                ----------------------          ---------------------
                             Shares                             Options           Options          Options        Options
                             Acquired on       Value            Exercis-          Unexer-          Exercis-       Unexer-
Name                         Exercise (#)      Realized($)      able              cisable          able           cisable
- ----                         ------------      -----------      ----              -------          ----           -------
<S>                            <C>               <C>          <C>              <C>              <C>           <C>
W. Thomas Grant II                0                 0            42,431            60,000          $84,007             $0
Robert D. Thompson                0                 0           122,000            28,000          $39,375        $26,250
Carl W. Ludvigsen, Jr.            0                 0            81,000             8,000          $82,873        $10,500
Thomas J. Hespe                   0                 0            60,000            40,000          $78,750        $52,500
Gregg R. Sadler                   0                 0            90,400             9,600         $144,019             $0
</TABLE>

Compensation of Directors

         Directors  who are not employees of LabOne  receive an annual  retainer
fee of $5,000  in cash and a grant of a number  of  shares  of  common  stock of
LabOne  having a value equal to $10,000,  plus $500 for each Board and Committee
meeting  attended  and  reimbursement  for  reasonable   expenses  in  attending
meetings.

         Richard  S.  Schweiker,  a  Director  of  LabOne,  has agreed to attend
national  meetings of  insurance  underwriters  on  LabOne's  behalf and to make
selected contacts in furtherance of LabOne's business, for which services LabOne
will pay Mr. Schweiker additional fees of $30,000 annually.

Employment Agreements

     LabOne has Employment Agreements with Robert D. Thompson, Carl W. Ludvigsen
Jr., Gregg R. Sadler and Thomas J. Hespe. Dr. Ludvigsen's Agreement provides for
his  employment  for a  two-year  term  ending in  November  1998 and  renewable
annually  thereafter for  successive  one-year terms unless LabOne elects not to
extend the Agreement.  Messrs.  Thompson's and Sadler's Agreements are renewable
annually for  one-year  terms  unless  LabOne  elects not to extend them and Mr.
Hespe's  Agreement is terminable  by LabOne on thirty days'  notice.  The annual
base  salaries  provided  under the  Agreements  are  $200,900 to Mr.  Thompson,
$230,900 to Dr. Ludvigsen,  $150,900 to Mr. Sadler and $150,900 to Mr. Hespe. In
the event that LabOne terminates Messrs.  Thompson,  Ludvigsen or Sadler without
cause (as defined in the Agreements),  LabOne will pay the terminated  officer a
lump sum severance  payment equal to his base salary for the balance of the term
of  the  Agreement,  plus  50% of one  year's  annual  base  salary.  If  LabOne
terminates  Mr.  Hespe  without  cause,  LabOne  will pay Mr.  Hespe a severance
payment  equal to one year's base  salary.  If a change of control of LabOne (as
defined in the Agreements) occurs at any time during which the executive officer

<PAGE>

is in LabOne's full-time
                                       91

employment,  and within one year  after such a change in control  the  executive
officer's   employment  is  terminated  for  any  reason  other  than  permanent
disability,  death  or  normal  retirement,  LabOne  will  pay  the  officer  as
termination  compensation  a lump sum amount equal to three times the  officer's
average annual  compensation  for the most recent five taxable years (subject to
certain  limitations  prescribed in the Internal Revenue Code) and any remaining
term of the  officer's  Agreement  shall be  cancelled.  The proposed  merger of
LabOne with and into Holdings does not  constitute a change of control of LabOne
within  the  meaning of the  Agreements.  Under each  Agreement,  the  executive
officer  agrees not to compete  with  LabOne for a period of two years after the
termination of his employment with LabOne.

Compensation Committee Interlocks and Insider Participation

     Mr. W. Thomas  Grant II was a member of the  Compensation  Committee of the
Board of  Directors  of  LabOne  until his  resignation  from the  Committee  on
February 14, 1998.  Mr. Grant is Chairman of the Board of  Directors,  President
and Chief Executive Officer of LabOne.

Board Compensation Committee Report on Executive Compensation

         LabOne's  executive   compensation   program  is  administered  by  the
Compensation  Committee,  a Committee of the Board of Directors  composed of the
Directors listed at the end of this report.  All issues  pertaining to executive
compensation are reviewed by the Compensation  Committee and recommendations are
submitted by the Committee to the full Board of Directors for approval.

Compensation Philosophy

     The philosophy  governing executive  compensation is based on a belief that
management  and  stockholders  have a common  goal of  increasing  the  value of
LabOne.  The business  strategy for achieving this goal is expressed in LabOne's
mission  statement:  "LabOne is dedicated to maximizing the return on investment
for  our  stockholders  . . .  to  providing  the  lowest-cost,  highest-quality
laboratory  testing  services  for our  clients  . . . to  providing  a  working
environment  that emphasizes  accountability  for results and rewards  employees
based on their contribution to LabOne's success."

         Three  principal  elements of  executive  compensation  -- base salary,
annual  incentive  plan,  and stock options -are used to motivate and reward the
accomplishment of annual corporate  objectives,  reinforce a strong  orientation
toward operating  excellence,  provide variability in individual awards based on
contributions  to business  results,  and  maintain a  competitive  compensation
package to attract,  retain and motivate individuals of the highest professional
quality.

Base Salary

         Salary ranges were developed based on a survey  initially  conducted in
1986 by an  independent  consultant  and  updated in 1989.  Base  salaries  were
targeted at the 60th to 65th percentile of pay for comparable  positions in "All
Industrial Base Salaries"  surveyed by the  consultant.  Salary ranges have been
adjusted annually to reflect  inflationary  increases shown in industry surveys.
Salary   ranges   have  also  been   adjusted   to   reflect   changes   in  job
responsibilities.  These salary ranges are reviewed annually by a consultant. In
<PAGE>

determining base salary levels,  the Committee  considers both the salary ranges
and individual  performance  evaluations for each executive officer. Base salary
decisions  are not based  upon any  specific  financial  performance  measure or
criterion with respect to LabOne.

Annual Incentive Plan and Discretionary Bonuses

     The  Annual   Incentive  Plan  is  designed  to  motivate  and  reward  the
accomplishment  of targeted  operating  results.  Prior to the beginning of each
fiscal year, the Committee establishes an operating earnings goal under the Plan
based upon the Committee's judgment of reasonable operating earnings growth over
the previous fiscal year. No

                                       92

incentive bonuses are payable under the Plan if the minimum  operating  earnings
threshold is not met. The size of the  incentive  pool  increases  pursuant to a
formula  established  by the Committee as operating  earnings  increase over the
minimum  threshold.  The  incentive  pool is  distributed  in cash to designated
officers and managers at year end according to a pre-established  weighting. The
weighting  is based upon  senior  management's  subjective  evaluations  of each
individual's  potential  contribution to LabOne's  financial and strategic goals
for the year, and is reviewed and approved by the Committee. Bonuses aggregating
$874,336 were paid to executive officers of LabOne under the Plan in 1998.

         LabOne also pays discretionary annual bonuses to executive officers and
key  employees of LabOne and its  subsidiaries  on an  irregular  basis upon the
recommendation  of the  Committee.  In making  determinations  as to recommended
bonuses,  the  Committee  considers  the  financial  condition and the operating
results over the last fiscal year of LabOne, the level of salary,  bonus, fringe
and other  benefits  currently  provided  to the  executive  by  LabOne  and the
individual  performance of the executive.  The Committee's  recommendations  are
based upon its  subjective  review of these  factors,  and is not based upon any
specific criteria or financial  performance measure. The Committee recommended a
discretionary  bonus  of  $50,000  to  one  executive  officer  in  1998,  based
principally upon the executive officer's performance in 1998.

Stock Options

         The Compensation Committee, as well as the Board of Directors, believes
that  significant  stock  ownership  through  stock options by key employees and
directors  is a major  incentive in aligning  the  interests  of  employees  and
stockholders,  because value is only  provided if the stock price  increases and
because stock options have an effective long-term reward and retention function.

         LabOne  administers  the  1987  Long-Term  Incentive  Plan and the 1997
Long-Term Incentive Plan. Under the Plans,  ten-year  nonqualified stock options
are granted to executive officers and other key employees when they are hired or
promoted into eligible  positions,  with vesting  generally  occurring over five
years.  In  addition to  executive  officers  and  employees,  each  nonemployee
Director of LabOne has also received a ten-year  nonqualified stock option grant
to vest over four years.

         LabOne also has a Stock Plan for Nonemployee Directors under which each
nonemployee Director receives annual retainer fees of $5,000 in cash and a grant
of a number of  shares of LabOne  stock  having a value  equal to  $10,000.  The
purpose  of the plan is to  provide  nonemployee  Directors  with an  additional
proprietary interest in LabOne's success and progress.
<PAGE>

         The Committee's determination whether to recommend the grant of options
to an executive  officer is based upon its subjective  and informal  review of a
number of factors,  including the number of options held by the  executive,  the
exercise  prices  of  such  options,   the  amount  of  the  executive's   total
compensation  package, the amounts which the executive is eligible to earn under
the Annual  Incentive  Plan, the position held by the executive,  the duties and
responsibilities of the executive, the past performance of the executive and the
Committee's desire to provide a long-term incentive component to the executive's
compensation.  The  decision  to grant  options is not based  upon any  specific
criteria or financial  performance measure. The Committee  recommended the grant
of stock  options  to  purchase  25,000  shares to one  officer  promoted  to an
executive officer position in 1998.

Chief Executive Officer's Compensation

     Mr. W. Thomas Grant II,  Chairman of the Board of Directors,  President and
Chief Executive Officer of LabOne, receives a salary of $150,000 per annum and a
car allowance of $9,000 per annum. Mr. Grant's salary was established at a level
below that of LabOne's  other senior  management  at Mr.  Grant's  request.  Mr.
Grant's base salary and car  allowance  were not changed in 1998.  Mr. Grant did
receive  an  additional  $5,769 in salary  in 1998 due to the  occurrence  of an
additional pay period in 1998 under LabOne's bi-weekly payroll system. Mr. Grant
also participates in the Annual Incentive Plan at the base  participation  level
for senior management. Mr. Grant

                                       93

participation  level  was  established  at the base  level  at Mr.  Grant's
request.  Based upon 1998 Plan results, Mr. Grant received an incentive bonus of
$107,261 in 1998.

Deductibility Cap on Compensation Exceeding $1,000,000

         The Committee has considered the potential  impact of Section 162(m) of
the Internal Revenue Code of 1986, as amended,  regarding  non-deductibility  of
annual compensation in excess of $1,000,000. The Committee does not believe that
Section  162(m) will have any  material  impact upon  LabOne,  given the current
salary  and bonus  levels  of  executive  officers  of the  corporation  and the
treatment in the regulations of compensation  under the corporation's  long-term
incentive  plans.  The  Committee  believes  that many of the options  currently
outstanding  are  exempt  from the  deductibility  limit  under  the  transition
provisions  set  forth  in  the  regulations  under  Section  162(m).  It is the
Committee's  current  intention  that options  granted under the 1997  Long-Term
Incentive Plan will qualify as performance-based compensation and be exempt from
the  deductibility  limits of Section  162(m).  The  Committee  will continue to
evaluate the advisability of qualifying executive compensation for deductibility
under Section 162(m).

                  Submitted by the Compensation Committee

                           Richard S. Schweiker, Chairman
                           Joseph H. Brewer
                           Richard A. Rifkind





<PAGE>

Comparison of Five Year Cumulative  Total Return Among LabOne,  Nasdaq Composite
Index and Peer Group

   [Performance Graph which shows the information provided in the table below]


                    1993      1994     1995       1996      1997         1998  
                   -----------------------------------------------------------
LabOne, Inc.       100.00    86.99     87.36     114.58    113.31        87.91
NASDAQ Composite   100.00    97.75    138.26     170.01    208.58       293.21
Peer Group         100.00    89.51     67.97      26.49     22.13        20.38

         The table  assumes the  investment at the close of business on December
31, 1993, of $100 in LabOne's  common stock and in the portfolio  represented in
each index, and assumes that all dividends were reinvested.

     The NASDAQ  Composite is a NASDAQ Stock  Market  index  consisting  of U.S.
companies that is provided by the Center for Research in Security  Prices of the
University   of  Chicago.   LabOne  has  selected  an  index  of  seven  testing
laboratories as its peer group:  Bio-Reference Labs,  Laboratory  Corporation of
America,  Oncormed,  Pharmchem,  Psychemedics,  Unilab  and  Universal  Standard
Medical.  LabOne  believes  that the peer group index  provides  an  appropriate
comparison.

Certain Relationships and Related Transactions


                           Relationship with Holdings

         As of March 26, 1999, Holdings beneficially owned 10,712,200 shares, or
80.5%, of the  outstanding  common stock of LabOne.  Holdings,  by virtue of its
ownership of a majority of LabOne's  common stock,  has control of LabOne and is
able to elect all of the members of LabOne's Board of Directors. LabOne operates
independently   of  Holdings,   with  the  officers  of  LabOne   having  direct
responsibility for all of LabOne's management and operations.

         Holdings and LabOne are parties to a Transition  Agreement  (Transition
Agreement)  pursuant  to which  they have  agreed to an  allocation  of  certain
corporate  opportunities and to mutual  indemnification  for certain liabilities
and

                                       94
expenses.  Under the  Transition  Agreement,  so long as  Holdings,  directly or
indirectly,  owns at least  20% of the  outstanding  voting  shares  of  LabOne,
Holdings agrees to refer to LabOne any product, service, idea or other corporate
opportunity that is within the scope of LabOne's business.  For purposes of this
Agreement, LabOne's business is defined as providing laboratory testing services
for the insurance and healthcare industry and the development and implementation
of data  processing and  communications  facilities  for receiving  test-related
instructions  from clients,  for  conducting  laboratory  operations and for the
collection,  use,  storage,  retrieval and  transmission of test results data by
both LabOne and its clients.

         In  the  event  that  a  majority  of  the  independent,  disinterested
Directors of LabOne informs  Holdings that LabOne does not intend to pursue,  or
LabOne  within  a  reasonable  time  fails  to  pursue,  the  consideration  and
development of any product, service, idea or other business opportunity referred
to it by  Holdings,  Holdings  is entitled  under the  Transition  Agreement  to
<PAGE>

consider and develop the product,  service, idea or business opportunity for its
own  benefit.  Under the  Agreement,  LabOne also agrees to  indemnify  and hold
harmless  Holdings,  and any  controlling  person of  Holdings,  with respect to
certain  civil  liabilities,  including  any and all  claims,  losses,  damages,
liabilities,  costs and expenses  that arise from or are based on  operations of
LabOne. Similarly, Holdings agrees to indemnify and hold harmless LabOne and any
controlling  person of LabOne  (other than  Holdings),  with  respect to certain
civil liabilities,  including any and all claims, losses, damages,  liabilities,
costs and expenses  that arise from or are based on the  operations  of Holdings
(other than the business of LabOne).


                                       95

                         MANAGEMENT OF COMBINED COMPANY
                                AFTER THE MERGER

Directors and Executive Officers of Combined Company After the Merger

         Holdings  and LabOne  have agreed in the merger  agreement  to take all
necessary  action so that as of the effective  time the  individuals  identified
below shall be the directors and executive officers of the combined company. The
parties  have also agreed in the merger  agreement  that prior to the  effective
time  one  additional  person  with  significant   experience  in  the  clinical
laboratory  industry will be named as a Class A Director by mutual  agreement of
Holdings  and  the  Special  Committee.  If  prior  to the  effective  time  any
individual  selected  to be a director  or  executive  officer  of the  combined
company is unwilling or unable to serve in such capacity, any person proposed to
fill such  vacancy  shall be subject to the approval of Holdings and the Special
Committee.

         The board of directors  of the  combined  company is divided into three
classes,  with  staggered  terms of office.  The initial  term of office of each
Class A Director will expire at the 2000 annual meeting of  stockholders  of the
combined  company,  the  initial  term of office of each Class B  Director  will
expire at the 2001 annual meeting of  stockholders  of the combined  company and
the  initial  term of office of each  Class C Director  will  expire at the 2002
annual meeting of stockholders of the combined company.  Thereafter, the term of
each class will expire on the date of the third annual stockholders' meeting for
the election of directors  following  the most recent  election of directors for
such class.  Each  director  shall hold office until the next annual  meeting of
stockholders  for the election of directors of his or her class and until his or
her successor has been duly elected and shall have qualified. Executive officers
serve at the pleasure of the Board of Directors.
<PAGE>
<TABLE>
<CAPTION>

Name                                Age                                Position
- ----                                ---                                --------
<S>                             <C>               <C>
W. Thomas Grant II                  48               Chairman of the Board of Directors, President,
                                                     Chief Executive Officer and Class C Director
Gregg R. Sadler, FSA                48               Executive Vice President - Administration,  President - Insurance
                                                     Laboratory Division and Secretary
Robert D. Thompson                  37               Executive Vice President, Chief Operating Officer,
                                                     Chief Financial Officer and Class B Director
Roger K. Betts                      56               Executive Vice President - Sales - Insurance Laboratory
                                                     Division
Thomas J. Hespe                     42               President - Clinical Marketing and Sales Division
Carl W. Ludvigsen, Jr.              46               Executive Vice President - Corporate Development and
  M.D., Ph.D., J.D.,                                 Chief Medical Officer
  FCAP, FCLM
Michael A. Peat, Ph.D.              51               President - Toxicology Division
Thomas H. Bienvenu II               49               Executive Vice President - Information Systems and
                                                     Technology
Judith A. VonFeldt                  52               Executive Vice President - Human Resources
Kurt E. Gruenbacher,                39               Vice President - Finance, Chief Accounting Officer and
  CPA, CMA, CFM                                      Treasurer
Joseph H. Brewer, M.D.              47               Class B Director
Peter C. Brown                      40               Class C Director
William D. Grant                    82               Class B Director
Richard A. Rifkind, M.D.            68               Class A Director
Richard S. Schweiker                72               Class C Director
James R. Seward                     46               Class A Director
Chester B. Vanatta                  63               Class B Director
John E. Walker                      60               Class C Director
R. Dennis Wright, Esq.              56               Class A Director
</TABLE>

         Certain  biographical  information  with respect to the above  persons,
other than Peter C. Brown and Chester B.  Vanatta,  is  described  herein  under
"Management of LabOne" on page 87.










                                       96




<PAGE>
     Peter C. Brown.  Mr.  Brown has served as  Co-Chairman  of the Board of AMC
Entertainment,  Inc. ("AMCE") since May 1998, as President of AMCE since January
1997 and as Chief  Financial  Officer of AMCE since November 1991. Mr. Brown has
served as Executive Vice President of American  Multi-Cinema,  Inc.  ("AMC"),  a
wholly-owned  subsidiary  of AMCE,  since  August  1994  and as Chief  Financial
Officer of AMC since November 1991. Mr. Brown served as Executive Vice President
of AMCE from August 1994 to January 1997,  and as Senior Vice  President of AMCE
and AMC from  November  1991 to August 1994.  AMCE and AMC are located in Kansas
City,  Missouri  and are engaged in the  business of  developing  and  operating
motion  picture  theaters.  Mr.  Brown also  serves as  Chairman of the Board of
Trustees of Entertainment Properties Trust, Kansas City, Missouri, a real estate
investment trust. Mr. Brown is a director of AMCE, AMC and Protection One, Inc.,
a security alarm monitoring company.

     Chester B. Vanatta. Mr. Vanatta is a business  consultant.  From 1985 until
May 1990,  he was an Executive in Residence  and the Paul J. Adam  Distinguished
Lecturer for the School of Business at the University of Kansas. Mr. Vanatta was
formerly Vice Chairman of Arthur Young & Company (now Ernst & Young),  certified
public accountants. Mr. Vanatta is a director of Atlantis Plastics, Inc.

                  SECURITY OWNERSHIP OF LABONE BEFORE AND AFTER
                                   THE MERGER

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS OF LABONE

         The  following  table shows as of March 26,  1999,  the total number of
shares  of common  stock of LabOne  beneficially  owned by  persons  known to be
beneficial owners of more than 5% of the outstanding stock of LabOne. All of the
shares of  outstanding  stock of LabOne that are owned by  Holdings  immediately
prior to the effective time of the merger will be cancelled in the merger.
<TABLE>
<CAPTION>
                                                                                             Percentage of
                                                   Shares of LabOne                          Outstanding Shares
                                                   Beneficially owned                        Of LabOne Owned
Beneficial Owner                                   March 26, 1999                            March 26, 1999
- ----------------                                   --------------                            --------------
<S>                                             <C>                                       <C>   
Lab Holdings, Inc.                                 10,712,200                                80.5%
5000 West 95th Street
Shawnee Mission, KS 66207
</TABLE>

Holdings has sole voting and investment power with respect to the shares listed.













                                       97

<PAGE>
                        SECURITY OWNERSHIP OF MANAGEMENT
                                    OF LABONE

         The  following  table shows for each  director  of LabOne,  each of the
executive  officers  of LabOne  named in the  Summary  Compensation  Table under
"Management of LabOne," and all directors and executive  officers of LabOne as a
group,  the total  number of shares of common  stock of LabOne  and of  Holdings
beneficially  owned by such persons as of March 26, 1999 and the total number of
shares of common stock of the combined  company owned after giving effect to the
merger.
<TABLE>
<CAPTION>

                                                                    Amount of Shares Beneficially Owned

                                                  LabOne                        Holdings                 Combined Company
                                             Before the Merger              Before the Merger            After the Merger
                                        ---------------------------    ---------------------------  --------------------------     
                                                          Percentage                   Percentage                 Percentage
       Beneficial Owner(1)              Shares(3)        of Class(2)   Shares          of Class(2)  Shares(3)     of Class(4)
                                        ------           --------      ------          --------     ---------      --------
<S>                                     <C>              <C>     <C>                  <C>      <C>              <C>
Joseph H. Brewer, M.D.                      27,195            *                0            *         27,195            *
William D. Grant                            38,695 (5)        *      1,086,647(6)         16.7     1,668,665        13.5-15.1%
W. Thomas Grant II                          81,596 (8)        *        138,089(7)          2.1%      288,729 (8)      2.3-2.6%
Thomas J. Hespe                             60,831 (8)        *              0              *         60,831 (8)        *
Carl W. Ludvigsen, Jr., M.D.                83,313 (8)        *              0              *         83,313 (8)        *
Richard A. Rifkind, M.D.                        27,098        *              0              *         27,098            *
Gregg R. Sadler                            102,993 (8)        *            266              *        103,392 (8)        *
Richard S. Schweiker                            19,978        *              0              *         19,978            *
James R. Seward                                 22,156        *              0              *         22,156            *
Robert D. Thompson                         127,949 (8)        *              0              *        127,949 (8)    1.0-1.2%
John E. Walker                              27,195 (9)        *          6,099(9)           *         36,343 (9)        *
R. Dennis Wright, Esq.                          24,378        *              0              *         23,822            *
All directors and executive                                                                                 
officers of LabOne as a group              817,198 (8)       5.8%    1,231,101            19.0%    2,489,471      20.2-22.6%
(17 persons)
         *  Less than 1% of outstanding shares
- ------------------
</TABLE>

(1)  Unless  otherwise  indicated,  each person has sole  voting and  investment
     power with respect to the shares listed.

(2)  For purposes of  determining  the percentage  ownership of each  beneficial
     owner, the outstanding shares of the respective  corporation include shares
     that the beneficial  owner has the right to acquire within 60 days pursuant
     to options  granted to such  beneficial  owner.  Percentages for LabOne are
     based upon 13,311,450 shares of LabOne common stock outstanding as of March
     26,  1999.  Percentages  for  Holdings  before  the  merger  are based upon
     6,489,103 shares of Holdings common stock outstanding as of March 26, 1999.

(3)  Assumes that none of the  beneficial  owners will elect to exchange  LabOne
     shares for cash.  Includes the following numbers of shares of LabOne common
     stock which such persons have the right to acquire  within 60 days pursuant
     to options granted under the LabOne  Long-Term  Incentive  Plan:  Joseph H.
     Brewer, 22,000 shares; William D. Grant, 22,000 shares; W. Thomas Grant II,
     57,431 shares;  Thomas J. Hespe,  60,000 shares;  Carl W.  Ludvigsen,  Jr.,
     81,000 shares;  Richard A. Rifkind,  22,000 shares; Gregg R. Sadler, 95,200
<PAGE>

     shares;  Richard S.  Schweiker,  17,600  shares;  James R.  Seward,  17,600
     shares; Robert D. Thompson,  126,000 shares; John E. Walker, 22,000 shares;
     R. Dennis Wright, 22,000 shares;

                                       98

and  all directors  and executive  officers as a group,  719,831  shares.  These
     options will be assumed by the combined company in the merger.

(4)  The two percentages for each beneficial  owner of the combined company over
     1% reflect  beneficial  ownership  assuming that LabOne  stockholders other
     than  Holdings  elect all stock (the lower  number) and  maximum  cash (the
     higher number).

(5)  Does not include 10,712,200 shares of LabOne common stock owned by Holdings
     (see "Security  Ownership of Certain  Beneficial  Owners of LabOne" above).
     Mr.  W.D.  Grant  disclaims  beneficial  ownership  of the shares of LabOne
     common  stock owned by  Holdings.  These  shares will be  cancelled  in the
     merger.

(6)  Includes  403,411  shares of  Holdings  common  stock held by three  family
     trusts for which  William D. Grant  serves as a  co-trustee  with UMB Bank,
     N.A., and in that capacity  shares voting and  investment  power and 28,916
     shares  owned by the wife of William  D.  Grant,  as to which he  disclaims
     beneficial ownership.

(7)  Includes  22,442  shares  held  by W.  T.  Grant  II as  custodian  for his
     children;  includes  45,000  shares held in a family  trust for which W. T.
     Grant II serves as a  co-trustee  and in that  capacity  shares  voting and
     investment  powers;  also includes 12,480 shares owned by the wife of W. T.
     Grant II, as to which he disclaims beneficial ownership.

(8)  Includes  the  following  numbers of shares of LabOne  common stock held in
     individually  directed  accounts of the named persons under LabOne's 401(k)
     profit-sharing  plan, as to which each of such persons has sole  investment
     power only: W. Thomas Grant II, 22,365 shares; Thomas J. Hespe, 831 shares;
     Carl W. Ludvigsen, Jr., 2,313 shares; Gregg R. Sadler, 5,793 shares; Robert
     D. Thompson,  1,949 shares;  and all directors and executive  officers as a
     group, 50,872 shares.  These shares will be converted into shares of common
     stock of the combined company in the merger.

(9)  All of Mr.  Walker's shares are owned by a revocable trust for Mr. Walker's
     wife, as to which he disclaims beneficial ownership.

                        LABONE's ANNUAL MEETING PROPOSALS

                              ELECTION OF DIRECTORS
                                    OF LABONE
General

         The  stockholders of LabOne will be asked to elect twelve  directors of
LabOne at the LabOne annual meeting.  The directors elected at the LabOne annual
meeting shall be elected to serve until the effective  time of the merger or, if
the merger is not consummated,  until the 2000 annual meeting of Stockholders of
LabOne.

         If the  merger is  consummated,  at the  effective  time of the  merger
LabOne will be merged into  Holdings and all  director  positions in LabOne will
<PAGE>
cease to exist.  The merger  agreement  specifies the persons who shall serve as
members of the board of  directors  of the combined  company  commencing  at the
effective  time of the merger.  See  "Management  of Combined  Company After the
Merger - Directors and Executive  Officers of Combined Company After the Merger"
on page 96.

     The Board of Directors of LabOne has nominated  the  following  persons for
election to the Board of

                                       99

Directors of LabOne at the LabOne annual meeting:  Joseph H. Brewer,  Peter
C. Brown,  William D. Grant, W. Thomas Grant II, Richard A. Rifkind,  Richard S.
Schweiker,  James R. Seward,  Robert D.  Thompson,  Chester B. Vanatta,  John E.
Walker and R. Dennis Wright.  Certain  biographical  information with respect to
each of these persons,  other than Peter C. Brown and Chester B. Vanatta, is set
forth herein under "Management of LabOne". Certain biographical information with
respect to Peter C.  Brown and  Charles B.  Vanatta  is set forth  herein  under
"Management  of the Combined  Company After the Merger".  The terms of office of
the  present  directors  of  LabOne  will  expire  upon  the  election  of their
successors at the LabOne annual meeting.

         It is  expected  that  each of such  nominees  will  be  available  for
election at the LabOne annual  meeting.  If any nominee shall be unable to serve
or shall decline to serve,  the persons named in the  accompanying  LabOne Proxy
have  discretionary  authority  to vote for a  substitute  nominee  or  nominees
designated by the Board of Directors of LabOne.

Meetings of the Board of Directors and Committees

         There were four  meetings of the Board of Directors  during  1998.  The
Board of Directors  has an Audit  Committee,  a  Compensation  Committee  and an
Executive  Committee.  During  1998 the  Audit  Committee  met four  times,  the
Compensation  Committee  met three  times and the  Executive  Committee  met two
times.  All  Directors  attended  75 percent or more of the total  number of all
meetings of the Board and of Committees  of which they are members  during 1998,
with the  exception  that  Joseph  Brewer  missed  two  Board  meetings  and two
Compensation Committee meetings in 1998.

     The Audit Committee  consists of Mr. Seward,  Chairman,  and Messrs.  W. D.
Grant,  Walker  and  Wright.  The Audit  Committee  reviews  LabOne's  financial
statements with the independent public accountants, determines the effectiveness
of the audit effort through meetings with the independent public accountants and
officers  of  LabOne,  inquires  into the  effectiveness  of  LabOne's  internal
controls through discussions with the independent public accountants, reports to
the Board on its activities and recommendations, and recommends to the Board the
appointment of independent public accountants for the ensuing year.

         The Compensation  Committee  consists of Mr. Schweiker,  Chairman,  and
Messrs.  Brewer and  Rifkind.  The purpose of the  Compensation  Committee is to
oversee  LabOne's  compensation  structure,  incentive  plans and other employee
benefits.  The Compensation  Committee reviews and recommends adjustments to the
officers' salary structure. It approves cash awards to non-officer employees and
recommends  to the Board  amounts to be set aside and cash  awards to be paid to
officers under  LabOne's cash bonus plan. The Committee  recommends to the Board
compensation for non-officer directors,  monitors the administration of employee
benefit  plans  and  reviews  significant  employee   supplementary  pension  or
termination arrangements.

<PAGE>
         The Executive  Committee  consists of Mr. W. Thomas Grant II, Chairman,
and Messrs.  Hespe,  Sadler,  Seward and Thompson.  The purpose of the Executive
Committee  is to act on  behalf  of the  Board of  Directors  and to serve in an
advisory  capacity  to  management.   The  Executive  Committee  also  develops,
recommends and reviews policy  guidelines for all  investments and borrowings of
LabOne and recommends outside investment management firms to provide services to
LabOne.  The Executive  Committee  exercises all the powers and authority of the
Board in interim  periods  between  meetings of the Board,  except as limited by
Delaware law, and reports all of its actions to the Board.

         LabOne does not have a standing  nominating  committee  of the Board of
Directors or a committee performing a similar function.

Section 16(a) Beneficial Ownership Reporting Compliance

     Section 16(a) of the Securities Exchange Act of 1934, as amended,  requires
directors, executive officers

                                       100

and beneficial  owners of more than ten percent of the common stock of LabOne to
file  reports of  beneficial  ownership  and  reports  of changes in  beneficial
ownership with the  Securities and Exchange  Commission and to provide copies to
LabOne.  Based  solely upon a review of the copies of such  reports  provided to
LabOne and written representations from directors and executive officers, LabOne
believes that all  applicable  Section 16(a) filing  requirements  for 1998 have
been met,  except  with  respect to one late Form 5 filing by W. D.  Grant.  Mr.
Grant initially filed a Form 5 for the 1998 fiscal year in a timely manner,  but
the Form 5 omitted a transaction required to be reported therein. Upon discovery
of the omission,  Mr. Grant filed a corrected  Form 5  approximately  eight days
late.

Required Vote

         Nominees for director of LabOne will be elected by the affirmative vote
of a plurality of shares of LabOne common stock present and entitled to vote, in
person or by proxy,  at the LabOne  annual  meeting.  The [eleven]  nominees for
director  receiving the greatest  number of votes shall be elected as directors.
Stockholders  may vote in favor of all nominees,  withhold their votes as to all
nominees or withhold  their votes as to specific  nominees.  Votes  withheld and
broker  non-votes as to the election of directors will not affect the outcome of
the election of directors. If the manner of voting shares of LabOne common stock
is not indicated on the LabOne Proxy, such shares will be voted for the election
of the twelve nominees named above as directors.

         THE BOARD OF DIRECTORS OF LABONE  RECOMMENDS  THAT THE  STOCKHOLDERS OF
LABONE VOTE "FOR" EACH OF THE NOMINEES FOR DIRECTOR.

                          RATIFICATION OF SELECTION OF
                    INDEPENDENT PUBLIC ACCOUNTANTS OF LABONE

         The Board of Directors  of LabOne has selected  KPMG LLP to examine the
accounts of LabOne and its  subsidiary  for the fiscal year ending  December 31,
1998.  Representatives  of KPMG LLP are  expected  to be  present  at the LabOne
annual  meeting  to make  any  statement  they  may  desire  and to  respond  to
appropriate questions concerning the audit report. If the merger is consummated,
at the effective  time of the merger LabOne will be merged into Holdings and the
separate  existence  of LabOne will  cease.  In such case,  the  accounts of the
combined  company  will  be  examined  by  KPMG  LLP as the  independent  public
<PAGE>

accountants for Holdings.

         THE BOARD OF DIRECTORS OF LABONE RECOMMENDS THAT STOCKHOLDERS OF
LABONE VOTE "FOR" THE RATIFICATION OF THE APPOINTMENT OF THE INDEPENDENT
PUBLIC ACCOUNTANTS.

         DESCRIPTION OF COMBINED COMPANY CAPITAL STOCK

         Authorized  Shares.  Upon  consummation  of the  merger,  the  combined
company's  Articles  of  Incorporation  will  authorize  the  issuance  of up to
43,000,000 shares of stock,  consisting of 40,000,000 shares of combined company
common stock, $.01 par value per share, and 3,000,000 shares of preferred stock,
$.01 par value per share.  Combined  company  common stock will be issued in the
merger to holders of shares of LabOne common stock who are to receive such stock
under the terms of the merger agreement. No shares of combined company preferred
stock will be issued in the merger.  The combined  company's  board of directors
will be  authorized  to provide for the  issuance of shares of combined  company
preferred  stock,  in one or more series,  to establish  the number of shares in
each  series  and to fix the voting  powers of the series and the  designations,
powers,  preferences,  and  relative,  participating,  optional or other special
rights, and qualifications, limitations or restrictions of each series.

     Dividends  and  Other  Distributions;  Preemptive  Rights.  Subject  to any
superior rights which may be created in any series of combined company preferred
stock which may be issued from time to time in the future,

                                       101
the  holders of  combined  company  common  stock  shall be  entitled to receive
dividends  as declared  from time to time by the board of  directors  from funds
legally available  therefor,  and upon liquidation of the combined company shall
be entitled to share ratably in all assets of the combined company available for
distribution  to such holders.  Shares of combined  company common stock are not
redeemable or convertible,  have no preemptive  rights and, upon issuance in the
merger, will be fully paid and nonassessable.

         Voting  Rights.  Shares of combined  company common stock will have one
vote per share on each matter  submitted to a vote of  stockholders,  other than
the election of directors.  Holders of combined  company  common stock will have
cumulative  voting  rights  with  respect to the  election of  directors  of the
combined  company.  Cumulative  voting permits each  stockholder to cast as many
votes as shall equal the number of shares held by such stockholder multiplied by
the  number of  directors  to be  elected,  and such votes may all be cast for a
single  director or may be distributed  among the directors to be elected as the
stockholder  wishes.  Depending  upon the  number of  directors  to be  elected,
cumulative voting may permit a holder of fewer than 50% of outstanding shares to
cumulate  such  holder's  votes  and  obtain  representation  on  the  board  of
directors.  The Articles of  Incorporation  of the combined company will contain
provisions  requiring a super-majority vote for certain stockholder actions. See
"The Proposed Merger - Certain Possible  Anti-Takeover Effects of the Amendments
to the Articles of Incorporation and Bylaws of the Combined Company" on page 53.

         Classified Board. The Articles of Incorporation of the combined company
will  provide  that the board of  directors  of the  combined  company  shall be
divided into three classes, as nearly equal in number as possible.  One class of
directors  will be elected  each year to hold office for a  three-year  term and
until the  successors  of such class are duly  elected and have  qualified.  The
impact of this  classification of the board of directors on cumulative voting is
that a greater  percentage of the voting shares are necessary in any election to
<PAGE>

obtain  representation on the board of directors,  because only one-third of the
directors are elected each year.  The  classification  of the board of directors
together with cumulative voting may also have the effect of delaying,  deferring
or preventing a change of control of the combined company.

         Certain  Restrictions on Shares Held by Affiliates.  Shares of combined
company  common stock  acquired in the merger will not be restricted  securities
within the meaning of SEC Rule 144. However,  holders of combined company common
stock who are affiliates of the combined company may resell their shares only if
they  register  the sale of shares under the  Securities  Act of 1933 or if they
comply  with the  requirements  of SEC  Rule  144 or Rule  SEC  144A or  another
available exemption, and comply with any applicable state securities laws.

         Listing.  Holdings  common stock and LabOne common stock  currently are
listed for trading on the NASDAQ  national market system,  and combined  company
common stock is expected to be listed for trading on the NASDAQ  national market
system following the merger.

Certain Provisions of Combined Company Articles of Incorporation and Bylaws that
May have an Anti- takeover Effect

         Certain existing  provisions of Holdings' articles of incorporation and
by-laws  that  also will be  included  in the  combined  company's  Articles  of
Incorporation  and  By-Laws  might have the effect of  discouraging  a potential
acquiror from attempting a takeover of the combined  company on terms which some
stockholders  might  favor,  and might reduce the  opportunity  for the combined
company's  stockholders to sell shares at a premium over then-prevailing  market
prices.  These include  provisions  relating to a classified board of directors,
removing and  appointing  directors,  "blank-check  preferred  stock",  business
combinations and charter and by-law amendments, which are described below. Other
new  provisions  that will be included  in the  combined  company's  Articles of
Incorporation  and Bylaws  which could have such an effect are  described  above
under  "The  Proposed  Merger  Certain  Possible  Anti-takeover  Effects  of the
Amendments to the Articles of Incorporation  and Bylaws of the Combined Company"
on page 53.

     Classified Board.  Holdings  presently has a classified board of directors,
and, as noted above, the

                                       102

combined company will have a classified  board of directors.  The purpose of the
classification  of the  board of  directors  is to help  assure  continuity  and
stability in the management of the business and affairs of the combined company.
However,  the  classification  of  directors  has the  effect  of making it more
difficult for  stockholders  to change the composition of the board of directors
of the combined company.  At least two annual meetings of stockholders,  instead
of one  meeting,  will be required to effect a change in a majority of the board
of directors. The existence of cumulative voting may further delay a change in a
majority of the board of directors, if the stockholders attempting to change the
composition  of the board of directors do not own a sufficient  number of shares
to elect a full slate of directors each year.

         "Blank-Check"   Preferred  stock.  The  Articles  of  Incorporation  of
Holdings  authorizes  the  Holdings'  the board of directors to issue  3,000,000
shares of preferred  stock,  in one or more series,  to establish  the number of
shares  in each  series  and to fix the  voting  powers  of the  series  and the
designations,  powers,  preferences,  and relative,  participating,  optional or
<PAGE>

other special rights,  and  qualifications,  limitations or restrictions of each
series.  This provision will be included in the Articles of Incorporation of the
combined company. The ability to issue preferred stock will provide the board of
directors  of the combined  company with  flexibility  in  structuring  possible
future  financings  and  acquisitions,  and in meeting  other  corporate  needs.
However,  the board of  directors  could  issue one or more  series of  combined
company  preferred  stock that might impede the  completion of a future  merger,
tender  offer  or  other  takeover  attempt.   There  currently  are  no  plans,
understandings,  agreements or arrangements concerning the issuance of preferred
stock of the combined company.

         Fair Price  Provisions.  The Articles of  Incorporation of the combined
company  will have a "fair price"  provision  similar to that found in Holdings'
articles of incorporation.  This provision will require stockholder approval, by
affirmative  vote of 80% of all shares  entitled  to vote  thereon,  voting as a
single class, of certain business combinations with related persons beneficially
owning  10% or more of  combined  company  common  stock,  unless  the  business
combination  is  approved  by  two-thirds  or  more  of the  combined  company's
continuing  directors and certain  minimum fair price and procedural  provisions
are satisfied.  This provision makes certain business  combinations with related
persons more difficult  when the requisite  board approval has not been obtained
and may therefore have an anti-takeover effect.

         Amendment  of  Certain  Charter  or By-Law  Provisions.  Certain of the
provisions of the Articles of  Incorporation  and Bylaws of the combined company
may be amended only by the  affirmative  vote of at least 80% of the outstanding
shares of stock  entitled to vote thereon,  unless the  amendments are favorably
recommended  by the  affirmative  vote of a  majority  of the  entire  board  of
directors.  These provisions  include those sections of the Articles relating to
the number of directors,  management of the combined  company and  amendments to
the  Bylaws,  the  right of the  combined  company  to  amend  the  articles  of
incorporation  generally  and the fair price  provisions  relating  to  business
combinations.  They also  include  those  sections  of the  Bylaws  relating  to
meetings of stockholders,  the number and classification of directors and powers
of the board of directors,  indemnification of directors and advance notice. The
purpose  of these  provisions  generally  is to  prevent  holders of less than a
substantial  percentage of  outstanding  shares from amending  provisions of the
articles of incorporation and Bylaws that are designed to promote, or to empower
the board of  directors  to promote,  the  interests  of all  stockholders.  The
super-majority  vote  requirements will have the effect of making more difficult
any  amendment  by  stockholders  of any of such  provisions  of the Articles of
Incorporation  or Bylaws that have not been  approved by a majority of the board
of directors, even if the holders of a majority of the outstanding shares of the
combined  company  believe that such amendment would be in their best interests.
Holdings'  articles  of  incorporation  contain  similar  provisions,  with some
variations.

         Number of  Directors;  Removing  Directors and Filling  Vacancies.  The
Bylaws of the combined  company will permit the Board of Directors to change the
number of  directors,  except that  unless the  Articles  of  Incorporation  are
amended  there may not be fewer  than  three nor more than 15. The Bylaws of the
combined company will provide that directors may be removed by stockholders only
for  cause  by a  majority  vote  of the  stockholders  entitled  to vote on the
election of directors,  provided that,  under The Missouri  General and Business
Corporation Law ("MGBCL"),  because cumulative voting applies, unless the entire
board is being removed a

                                       103
<PAGE>
director  may not be removed  by a  stockholder  vote if the votes cast  against
removal would be sufficient to elect the director if then cumulatively  voted at
an  election  of the  entire  class  of which he is a part.  The  Bylaws  of the
combined  company  also will  provide  that any  vacancies  will be filled by an
affirmative  vote of a  majority  of the  remaining  directors,  or, if they are
unable to do so, by a vote of a  majority  of the  stockholders  at an annual or
special  meeting.  These  provisions  of  the  combined  company's  Articles  of
Incorporation  and  Bylaws,  which  are the  same as those  found  in  Holdings'
articles of  incorporation  and bylaws,  may be amended only by the  affirmative
vote of at  least  80% of the  outstanding  shares  of  stock  entitled  to vote
thereon,  unless the  amendments  are approved or favorably  recommended  by the
affirmative vote of a majority of the entire board of directors. They could have
an  anti-takeover  effect by preventing or delaying a stockholder from enlarging
the board of  directors  or  removing  directors  without  cause and filling the
resulting vacancies or new directorships with such stockholder's new nominees.

         Other  provisions.  Certain other provisions of the combined  company's
Articles of  Incorporation  and Bylaws may have an anti-takeover  effect.  These
include  provisions  requiring  advance  notice of stockholder  nominations  and
proposals and provisions for special meetings of stockholders. See "The Proposed
Merger Certain Possible  Anti-Takeover Effects of the Amendments to the Articles
of Incorporation and Bylaws of the Combined Company" on page 53.

         Stockholder Rights Plan.  Holdings  previously had a stockholder rights
plan,  which  expired  June 1, 1998.  The  stockholder  rights  plan had certain
anti-takeover  effects.  The  rights  plan was  designed  to  cause  substantial
dilution to any person or group that attempted to acquire  Holdings on terms not
approved by the Holdings Board of Directors.  Upon  consummation  of the merger,
the  combined  company  will not  have a  rights  plan.  However,  the  board of
directors  of the  combined  company  will  from time to time  after the  merger
consider the adoption of a stockholder rights plan, and may adopt such a plan in
the future.

                    COMPARATIVE RIGHTS OF LABONE STOCKHOLDERS

         The rights of holders of LabOne common stock are currently  governed by
the Delaware General  Corporation Law and LabOne's  Certificate of Incorporation
and Bylaws  adopted  thereunder.  The rights of those  holders of LabOne  common
stock who  become  stockholders  of the  combined  company  in the  merger  will
thereafter be governed by Missouri law and by the Articles of Incorporation  and
Bylaws of the combined company, as amended in the merger.

         Because  Holdings  owns 80.5% of the  outstanding  stock of  LabOne,  a
potential acquirer desiring to acquire control of LabOne without the approval of
the Board of  Directors  of Holdings  would be  required  to acquire  control of
Holdings. Consequently,  LabOne stockholders are currently indirectly subject to
the  provisions  of the  articles of  incorporation  and by-laws of Holdings and
Missouri law that may have an anti-takeover effect.  Certain existing provisions
of Holdings'  articles of incorporation  and bylaws that will be included in the
combined  company's  Articles of  Incorporation  and Bylaws and that may have an
anti-takeover  effect are  described in  "Description  of the  Combined  Company
Capital Stock - Certain Provisions of Combined Company Articles of Incorporation
and Bylaws That May Have an  Anti-Takeover  Effect."  Certain  amendments to the
combined  company's  Articles of Incorporation and By-Laws are to be effected in
the Merger that may have an  anti-takeover  effect.  These are described in "The
Proposed Merger - Certain  Possible  Anti-takeover  Effects of the Amendments to
the Articles of  Incorporation  and Bylaws of the Combined  Company" on page 53.
The  following  discussion  should be read in  conjunction  with the  discussion
contained in these sections.
<PAGE>

         The following discussion summarizes certain important differences among
the  rights of  holders  of LabOne  common  stock and the  rights of  holders of
combined  company common stock upon  consummation  of the merger.  The following
summary is not intended as a complete statement of all such differences,  and is
qualified  in its  entirety  by  reference  to the  full  text of the  governing
documents of LabOne and the combined company and to Missouri and Delaware law.

                                       104

               Certain  Differences  between LabOne's and the Combined Company's
Charter and By-Laws.

         Authorized Stock. LabOne's Certificate of Incorporation  authorizes the
issuance of 40,000,000  shares of LabOne  common stock and  1,000,000  shares of
preferred  stock,  $.01 par value per share, in one or more series.  As of March
26,  1999,  there  were  13,311,450  shares of LabOne  common  stock  issued and
outstanding,  and 2,837,927  shares of LabOne common stock reserved for issuance
upon exercise of outstanding options and warrants. No shares of LabOne preferred
stock are outstanding.  The combined  company's  Articles of Incorporation  will
authorize the issuance of 40,000,000 shares of combined company common stock and
3,000,000 shares of combined company preferred stock. See "The Proposed Merger -
Certain  Possible  Antitakeover  Effects of the  Amendments  to the  Articles of
Incorporation and Bylaws of the Combined Company" on page 53.

         Cumulative  Voting.  LabOne  stockholders do not have cumulative voting
rights with respect to the election of  directors.  Holders of combined  company
common stock will have cumulative voting rights.  Cumulative voting permits each
stockholder  to cast as many votes as shall  equal the number of shares  held by
such stockholder  multiplied by the number of directors to be elected,  and such
votes  may all be cast for a single  director  or may be  distributed  among the
directors to be elected as the stockholder wishes.

         Classified  Board.  LabOne's  entire  Board  of  Directors  is  elected
annually.  The Articles of  Incorporation  of the combined  company will provide
that the board of directors  of the combined  company will be divided into three
classes,  as nearly equal in number as possible.  One class of directors will be
elected each year to hold office for a three-year  term and until the successors
of such class are duly elected and have qualified.

         Advance Notice of Stockholder  Nominations and Proposals.  The combined
company's  Bylaws  will  contain a  provision  establishing  an  advance  notice
procedure  for  stockholders  wishing to  nominate  candidates  for  election as
directors or bring other business before an annual meeting of stockholders.  The
Bylaws  will  require  stockholders  to  deliver  prior  written  notice  of any
stockholder  proposal or nomination to the Secretary of the combined  company no
later than ninety  days  before the  meeting  date or ten days after the meeting
date is publicly  announced,  whichever is later.  See " The  Proposed  Merger -
Amendments to Holdings' Articles of Incorporation and Bylaws" on page 51. LabOne
has no comparable requirement.

         Fair Price Provision.  A "fair price" provision in LabOne's Certificate
of  Incorporation  requires  compliance  with  certain  minimum  fair  price and
procedural  requirements  and stockholder  approval,  by the affirmative vote of
two-thirds of all shares entitled to vote thereon,  voting as a single class, of
certain business  combinations  with related persons who beneficially own 10% or
more of LabOne's  common stock,  unless the business  combination is approved by
two-thirds  or  more  of  LabOne's   continuing   directors.   The  Articles  of
Incorporation  of the combined  company will have a "fair price"  provision that
<PAGE>

will require  stockholder  approval,  by  affirmative  vote of 80% of all shares
entitled  to vote  thereon,  voting  as a  single  class,  of  certain  business
combinations  with related persons  beneficially  owning 10% or more of combined
company common stock, unless the business  combination is approved by two-thirds
or more of the combined company's  continuing directors and certain minimum fair
price and procedural provisions are satisfied.

         Amendments to Charter and Bylaws. LabOne's Certificate of Incorporation
and  By-Laws  do  not  contain  any  super-majority  approval  requirements  for
amendments by the  stockholders to the Certificate of  Incorporation  or Bylaws,
and do not  limit  the power of the  Board of  Directors  to amend  the  Bylaws.
Certain of the  provisions  of the Articles of  Incorporation  and Bylaws of the
combined  company may be amended only by the affirmative vote of at least 80% of
the outstanding shares of stock entitled to vote thereon,  unless the amendments
are favorably  recommended by the  affirmative  vote of a majority of the entire
board of directors.

         Right to Call Special Meetings of Stockholders. LabOne's By-Laws permit
stockholders  holding a majority of the issued and outstanding  shares of LabOne
common stock to call special meetings of stockholders.
Stockholders of the combined company may not call stockholders' meetings.

                                       105

         Number of Directors; Removing Directors and Filling Vacancies. LabOne's
Bylaws permit its Board of Directors to change the number of directors,  subject
to the  limitation  that there may not be more than 22 nor less than three.  The
Bylaws of the combined  company will permit the Board of Directors to change the
number of  directors,  except that  unless the  Articles  of  Incorporation  are
amended there may not be fewer than three nor more than 15.

           LabOne's  By-Laws and the Delaware  General  Corporation Law ("DGCL")
permit  the  removal  of  directors  without  cause  by a  majority  vote of the
stockholders  entitled to vote on the election of  directors.  The Bylaws of the
combined company will provide that directors may be removed by stockholders only
for  cause  by a  majority  vote  of the  stockholders  entitled  to vote on the
election of directors,  provided that,  under The Missouri  General and Business
Corporation Law ("MGBCL"),  because cumulative voting applies, unless the entire
board is being  removed a director may not be removed by a  stockholder  vote if
the votes cast against removal would be sufficient to elect the director if then
cumulatively voted at an election of the entire class of which he is a part. The
Bylaws of the combined  company also will  provide  that any  vacancies  will be
filled by an affirmative vote of a majority of the remaining  directors,  or, if
they are  unable to do so, by a vote of a  majority  of the  stockholders  at an
annual or special meeting.

         Presiding  Officer  at  Stockholders'  Meetings.  The  By-Laws  of  the
combined company will require that the chairman of the board, the president or a
vice  president  preside at all  stockholder  meetings  and give such  presiding
officer the  authority to adjourn the  stockholder  meeting from time to time on
such presiding officer's own motion. The By-Laws of LabOne designate a presiding
officer at stockholders  meetings but do not authorize the presiding  officer to
unilaterally adjourn the meeting.

         Limitation of Directors'  Liability.  As permitted  under Delaware law,
the Certificate of Incorporation of LabOne provides that a director shall not be
liable to the corporation or its stockholders for monetary damages for breach of
fiduciary duty as a director,  except for (1) any breach of the director's  duty
<PAGE>

or loyalty to the corporation or its stockholders,  (2) acts or omissions not in
good faith or which involve  intentional  misconduct  or a knowing  violation of
law,  (3) the  unlawful  payment  of a  dividend  or the  unlawful  purchase  or
redemption of stock or (4) any  transaction  from which the director  derived an
improper personal benefit.  Missouri law does not expressly  authorize,  and the
Articles of  Incorporation  of the combined  company  will not  contain,  such a
provision.

         Indemnification of Directors and Officers. LabOne's Bylaws provide that
LabOne shall  indemnify  and advance  expenses to the  directors and officers of
LabOne to the fullest  extent  permitted  under the DGCL.  Generally,  under the
DGCL, a  corporation  may  indemnify  any person made or threatened to be made a
party to any action, suit or proceeding,  by reason of the fact that such person
is or was a director,  officer,  employee or agent of the corporation,  or is or
was serving at the request of the corporation in certain capacities with respect
to another enterprise,  against expenses,  judgments,  fines and amounts paid in
settlement  actually and reasonably  incurred by such person in connection  with
such legal  proceeding,  if such person acted in good faith and in a manner such
person reasonably  believed to be in or not opposed to the best interests of the
corporation,  and,  with respect to any criminal  proceeding,  had no reasonable
cause to believe such person's conduct was unlawful.  With respect to any action
by or in the  right of the  corporation,  such  indemnification  is  limited  to
expenses   actually   and   reasonably   incurred   by  such   person  and  such
indemnification  may be made in respect of any claim as to which such  person is
adjudged  to be  liable  to the  corporation  only  to the  extent  that a court
determines  that in view of all the  circumstances  of the case,  such person is
fairly and  reasonably  entitled to indemnity  for such  expenses that the court
deems proper.  The DGCL  provides  that  expenses,  including  attorneys'  fees,
incurred  by an  officer or  director  in  defending  any such  action,  suit or
proceeding may be paid or reimbursed by the  corporation in advance of the final
disposition  of a proceeding  promptly upon receipt by it of an  undertaking  of
such person to repay such expenses if it shall  ultimately  be  determined  that
such person is not entitled to be indemnified by the corporation.

         The combined  company's  Bylaws provide that the combined company shall
indemnify and advance expenses to directors and officers of the combined company
to the fullest  extent  permitted  under the MGBCL.  The provisions of the MGCBL
governing  indemnification and advancement of expenses are substantially similar
to

                                       106

those of the DGCL,  except that the MGBCL permits a Missouri  corporation,  upon
approval of its stockholders, to provide indemnification for conduct that is not
finally adjudged to have been knowingly  fraudulent,  deliberately  dishonest or
willful  misconduct.  The MGBCL provides that expenses may be paid or reimbursed
by the corporation in advance of the final disposition of a proceeding  promptly
upon receipt by it of an  undertaking  by the  indemnitee to repay such expenses
unless it shall  ultimately  be  determined  that such  person is entitled to be
indemnified  by the  corporation.  The  provisions of the Bylaws of the combined
company  governing  indemnification  and advancement of expenses were previously
approved by the stockholders of Holdings.

         The SEC has stated its opinion  that,  insofar as  indemnification  for
liabilities  arising  under the  Securities  Act may be permitted to  directors,
officers  or persons  controlling  an issuer,  such  indemnification  is against
public policy as expressed in the Securities Act and is therefore unenforceable.

<PAGE>

Certain Differences Between Missouri and Delaware Corporation Statutes.

         Stockholder  Approval of Certain Corporate  Transactions.  The Delaware
General  Corporation  Law  ("DGCL")  requires  that  a  merger,   consolidation,
disposition of all or substantially all the assets or voluntary dissolution of a
corporation be approved by the affirmative vote of a majority of the outstanding
shares  entitled to vote  thereon  (except as  indicated  below).  The  Missouri
General and Business  Corporation Law ("MGBCL")  requires that such transactions
be approved  by the  affirmative  vote of  two-thirds  (2/3) of the  outstanding
shares  entitled  to vote  thereon.  Both the DGCL and the  MGBCL  require  that
mergers be approved by the board of directors,  but only the DGCL requires board
of  director  approval  of  dispositions  of  all  or  substantially  all of the
corporation's  assets. Under the DGCL,  stockholder approval is not required for
mergers  in  which  (a)  the  certificate  of  incorporation  of  the  surviving
corporation is not amended, (b) shares of the surviving corporation  outstanding
before the merger are unchanged and (c) new shares to be issued in the merger do
not exceed 20 percent of the shares outstanding before the merger.

         Amendment  of  Charter.  Under the MGBCL,  proposed  amendments  to the
articles of  incorporation  may be submitted  directly to the  stockholders  for
approval without the prior approval of the Board of Directors. Amendments to the
articles of incorporation must be approved by the affirmative vote of a majority
of  the  outstanding   shares   entitled  to  vote  thereon.   The  Articles  of
Incorporation  of the  combined  company  require  that  amendments  to  certain
provisions  of the  Articles  of  Incorporation  or  Bylaws be  approved  by the
affirmative  vote of 80% of the  outstanding  shares  entitled to vote  thereon,
unless a majority of the entire Board of Directors has favorably recommended the
amendment.

         The  DGCL  requires  that  an  amendment  to a  Delaware  corporation's
certificate of  incorporation  first be adopted by the board of directors before
the amendment is submitted to the  stockholders  for approval by the affirmative
vote of a majority of the outstanding shares entitled to vote thereon.  LabOne's
Certificate of Incorporation contain no provisions requiring approval of greater
than a majority of the shares entitled to vote thereon,  with the exception that
amendments  to the "fair price"  provisions  described  above are required to be
approved by the affirmative vote of (a) two-thirds of all the outstanding shares
entitled to vote thereon and (b)  two-thirds  of the  outstanding  shares of any
class of stock entitled to vote separately as a class on the matter.

         Dissenters'  Appraisal  Rights.  The MGBCL grants  appraisal  rights to
dissenting   stockholders  in  connection  with  mergers,   consolidations   and
dispositions of all or substantially  all of the assets of the corporation.  The
DGCL grants appraisal rights only in connection with mergers and consolidations,
and grants no appraisal  rights with respect to mergers in which (a)  dissenting
shares are (i) listed on a  national  securities  exchange  or  designated  as a
national  market  system  security  on an  interdealer  quotation  system by the
National Association of Securities Dealers,  Inc. or (ii) held of record by more
than 2,000  stockholders or (b) the corporation is the surviving  corporation in
the merger and no vote of its  stockholders  is  required  under the DGCL,  with
certain exceptions.

     Anti-takeover  Statutes.  The MGBCL  contains a control  share  acquisition
statute and a business

                                       107


<PAGE>
combination   "moratorium"   statute.  Both  statutes  apply  only  to  Missouri
corporations that meet certain tests with respect to their presence in Missouri.
Because  the  combined  company  will not meet  these  tests,  neither  of these
statutes will apply to the combined company at the Effective Time of the merger.
The DGCL contains a business  combination  "moratorium"  statute that  generally
prohibits a domestic  corporation  from  engaging  in mergers or other  business
combinations with any person who is an "interested  stockholder" for a period of
three years after the person becomes an "interested stockholder," unless certain
conditions are satisfied.

         Other  Constituency  Statute.  The  MGBCL  and the  combined  company's
Articles   of   Incorporation   expressly   authorize   directors   to  consider
"non-monetary  factors" when analyzing  takeover bids. The Board of Directors is
authorized to consider a number of factors in exercising  its business  judgment
concerning an acquisition proposal,  including without limitation the following:
(a) the  adequacy  of the  consideration  offered  in  relation  to the  board's
estimate of the current value of the  corporation in a  freely-negotiated  sale,
the  liquidation  value  of  the  corporation,  and  the  future  value  of  the
corporation  over a period  of years as an  independent  entity,  discounted  to
current value;  (b) existing  political,  economic and other factors  bearing on
security  prices;  (c) whether the acquisition  proposal might violate  federal,
state or local  laws;  (d)  social,  legal and  economic  effects on  employees,
suppliers,   customers  and  others  having  similar   relationships   with  the
corporation,  and on the  communities  in which  the  corporation  conducts  its
business;  (e) the financial condition and earnings prospects of the bidder; and
(f) the  competence,  experience and integrity of the bidder.  The DGCL does not
contain a similar provision.

         Stockholder Action by Written Consent. The DGCL permits stockholders to
act without a meeting,  without  prior notice and without a vote, if consents in
writing  setting  forth  the  action  so taken  are  signed  by the  holders  of
outstanding  stock having the minimum number of votes that would be necessary to
authorize  such  action at a meeting at which all shares  entitled  to vote with
respect to the subject matter thereof were present and voted.  The MGBCL permits
such action without a meeting only if written  consents setting forth the action
so taken are signed by all of the stockholders entitled to vote on the matter.

         Amendment of Bylaws.  Under the MGBCL, the power to make, alter,  amend
or repeal the Bylaws of the  corporation is vested in the  stockholders,  unless
and to the  extent  that such power is vested in the board of  directors  by the
articles of  incorporation.  The combined  company's  Articles of  Incorporation
authorize  the  stockholders  and the board of  directors  to amend the By-Laws,
subject to certain restrictions. Under the DGCL, the stockholders have the power
to adopt,  amend or repeal  Bylaws,  provided  that the  corporation  may in its
certificate  of  incorporation  confer such  authority on the directors as well.
Under the DGCL,  the fact that such power has been  conferred  on the  directors
does not limit the power of the  stockholders to adopt,  amend or repeal Bylaws.
LabOne's  Certificate of  Incorporation  authorizes the Board to amend or repeal
the By-Laws without stockholder approval.

         Inspection  of Books and  Records.  The MGBCL grants  stockholders  the
right to inspect the stockholders'  list and books of the corporation under such
regulations as may be prescribed by the corporation's  By-Laws.  The DGCL allows
any stockowner to inspect the stockowners' list and books of the corporation for
a purpose reasonably related to such person's interest as a stockholder.

         Payment of  Dividends.  Under the MGBCL,  the Board of  Directors  of a
corporation may declare and the corporation may pay dividends so long as the net
assets of the  corporation  are not less than its stated capital and the payment
<PAGE>
of the  dividend  would not reduce the net assets of the  corporation  below its
stated capital. Under the DGCL, a corporation generally may pay dividends out of
the corporation's  surplus or, if the corporation has no available surplus,  out
of net  profits  for the fiscal  year in which the  dividend  is declared or the
preceding fiscal year.

                                       108

                   COMPARATIVE RIGHTS OF HOLDINGS STOCKHOLDERS

         Holdings  is  a  Missouri   corporation  and  will  remain  a  Missouri
corporation  when it becomes the combined  company in the merger.  The rights of
holders of Holdings  common stock will continue to be governed by the MGBCL upon
consummation of the merger.  However,  the Articles of Incorporation and By-Laws
of Holdings will be amended in the following  material  respects when it becomes
the combined company in the merger:

         Change of Name.  Holdings' name will be changed to "LabOne, Inc."

         Common  Stock.  The par value of the common  stock will be reduced from
$1.00  per share to $.01 per  share,  and the  number of shares of common  stock
which the  corporation  shall have the authority to issue will be increased from
24,000,000  shares  to  40,000,000  shares.   There  are  currently  issued  and
outstanding  6,489,103 shares of Holdings common stock. 60,000 additional shares
are reserved for issuance upon exercise of outstanding stock options.

         Required  Vote For  Certain  Amendments  to Articles  and  Bylaws.  The
combined  company's  Articles of  Incorporation  will be amended to require that
amendments  to certain  additional  provisions  of the Bylaws be approved by the
affirmative vote of at least 80% of the outstanding  shares of stock entitled to
vote thereon, unless the amendments are favorably recommended by the affirmative
vote of a majority of the entire board of directors.  These  provisions  include
those relating to who presides at stockholder meetings and the business that may
be conducted at such  meetings  (including  advance  notice  requirements),  the
powers of the board of directors and  indemnification of the board of directors.
The  amendments  also  require  an  80%  vote  to  adopt  provisions  which  are
inconsistent  with  specified  provisions  of the Articles of  Incorporation  or
Bylaws,  unless  favorably  recommended  by a majority  of the  entire  board of
directors.  Holdings'  present  Certificate  of  Incorporation  waives  the  80%
stockholder vote requirement only if amendments are favorably recommended by the
entire board of directors.  See "The  Proposed  Merger - Amendments to Holdings'
Articles of Incorporation and Bylaws" on page 51.

         Fair Price  Provisions.  The fair price  provisions  of the Articles of
Incorporation  of the combined  company will be amended to eliminate the concept
of a "Continuing  Director  Quorum".  This change together with other clarifying
changes  relating to action by Continuing  Directors,  as defined,  eliminates a
possible  ambiguity in these  provisions as to the requisite level of Continuing
Director approval for certain business combinations.

         The fair price  provisions  are also  amended to  include  among  those
business combinations requiring extraordinary stockholder or Continuing Director
approval mergers with subsidiaries in which certain additional by-law provisions
do not  appear  in the  by-laws  of the  surviving  corporation  or in which the
by-laws of the surviving  corporation contain provisions  inconsistent with such
provisions  and other  charter  and by-law  provisions.  The  additional  by-law
provisions  include those relating to who presides at  stockholder  meetings and
the business that may be conducted at such meetings  (including  advance  notice
requirements),  the powers of the board of directors and  indemnification of the
<PAGE>
board of directors.

         Special Stockholders' Meetings. Under Holdings' current Bylaws, holders
of four-fifths  (4/5) of the  outstanding  shares may call a special  meeting of
stockholders.  Under the amended By-Laws of the combined  company,  stockholders
may not call a special meeting.

         Presiding Officer at Stockholders' Meetings. The amended By-Laws of the
combined company require that the chairman of the board, the president or a vice
president  preside at all stockholder  meetings and give such presiding  officer
the  authority  to adjourn  the  stockholder  meeting  from time to time on such
presiding officer's own motion.  Holdings' present By-Laws designate a presiding
officer at stockholders  meetings but do not authorize the presiding  officer to
unilaterally adjourn the meeting.

                                       109
         Advance Notice of Stockholder  Nominations and Proposals.  The combined
company's  By-Laws will contain new  provisions  establishing  an advance notice
procedure  for  stockholders  wishing to  nominate  candidates  for  election as
directors or bring other business before an annual meeting of stockholders.  The
Bylaws  will  require  stockholders  to  deliver  prior  written  notice  of any
stockholder  proposal or nomination to the Secretary of the combined  company no
later than ninety  days  before the  meeting  date or ten days after the meeting
date is publicly announced,  whichever is later. Holdings' Bylaws do not contain
such a provision.

         Classified Board. Under the combined company's bylaws, where the number
of directors is not evenly  divisible by three,  the board of directors  will be
empowered to determine  which class of directors  shall have a number  differing
from the other classes. Holdings' Bylaws do not contain such a provision.

     Director Qualifications. The age limitation on directors will be eliminated
in the combined company's bylaws.

         Special Board Meetings. Under the combined company's Bylaws, a majority
of the board of directors may call a special meeting.  Holdings' Bylaws permit a
single director to call a special meeting of the board.

         For additional  information respecting the changes that will be made to
Holdings  Articles of  Incorporation  and  Bylaws,  See "The  Proposed  Merger -
Amendments to Holdings' Articles of Incorporation and Bylaws" on page 51.


















<PAGE>
<TABLE>
<CAPTION>

                             MANAGEMENT OF HOLDINGS

Directors and Officers

         The directors and executive officers of Holdings are as follows:

Name                                        Age               Position
- ----                                        ---               -------- 
<S>                                      <C>              <C> 
P. Anthony Jacobs, CFA                      57                President, Chief Executive Officer and
                                                              Class C Director
Steven K. Fitzwater                         52                Executive Vice President, Chief Operating
                                                              and Financial Officer, Treasurer,
                                                              Secretary and Class A Director
Linda K. McCoy                              48                Vice President and Chief Accounting
                                                              Officer
John H. Robinson, Jr.                       48                Chairman of the Board and Class B
                                                              Director
Lan C. Bentsen                              51                Class B Director
W.T. Grant II                               48                Chairman of the Board, President and Chief
                                                              Executive Officer of LabOne
</TABLE>

         Mr.  Jacobs has been a director of Holdings  since 1987,  President  of
Holdings since May 1993 and Chief  Executive  Officer since  September 1997. Mr.
Jacobs was Chief  Operating  Officer from 1990 to September  1997 and  Executive
Vice  President  prior to May 1993.  Mr.  Jacobs  also is a director of Trenwick
Group, Inc., Syntroleum Corporation and Response Oncology, Inc.

         Mr. Fitzwater has been a director of Holdings since September 1997, and
Executive Vice President,  Chief Operating and Financial Officer,  Treasurer and
Secretary since May 1998. He was Vice President,  Chief Financial and Accounting
Officer,  Treasurer and Secretary  from  September 1997 to May 1998 and was Vice
President,  Chief  Accounting  Officer and  Secretary  of Holdings  from 1990 to
September 1997.

         Ms. McCoy has been Vice President and Chief Accounting Officer since
May 1998.

                                       110

     Mr . Robinson  has been a director of Holdings  since 1990 and  Chairman of
the Board since  September 1997. Mr. Robinson is Vice Chairman of Black & Veatch
(design  and  construction).  Mr.  Robinson  also  is  a  director  of  Commerce
Bancshares, Inc. and Coeur d'Alene Mines Corporation (gold and silver mining).

         Mr. Bentsen has been a director of Holdings since 1986. He has been the
Executive Vice President of Frontera  Resources  since 1996 (oil and gas).  From
1994 to 1996 he was Managing Partner of Remington Partners (investments) and was
previously   Chairman  and  Chief  Executive   Officer  of  Sovereign   National
Management, Inc.
(property management).

         Mr. Grant has been Chairman,  President and Chief Executive  Officer of
LabOne since November 1995. He was a director of Holdings from 1980 to September
1997,  Chairman  and  Chief  Executive  Officer  of  Holdings  from  May 1993 to
<PAGE>

September 1997, and President of Holdings prior to May 1993. Mr. Grant also is a
director of AMC Entertainment Inc., Commerce Bancshares, Inc., Kansas City Power
& Light Company, and Response Oncology, Inc.

Committees of the Holdings' Board of Directors

     The Holdings Board has established an Audit Committee consisting of Messrs.
Bentsen  (Chairman)  and Robinson and a  Compensation  Committee  consisting  of
Messrs. Robinson (Chairman) and Bentsen.

         During the year ended  December 31, 1998, the Board met seven times and
the  Compensation  Committee met four times. The Audit Committee held a normally
scheduled  December  meeting in January  1999.  The  attendance at Committee and
Board  meetings by all  Directors  in the  aggregate  was 97% and each  Director
attended at least 90% of the meetings of the Board and the  Committees  of which
the Director was a member.

         The  Audit   Committee   recommends  to  the  Board  of  Directors  the
independent  public  accountants  to audit the books and records of Holdings and
its  subsidiaries  for the  year.  It  also  reviews,  to the  extent  it  deems
appropriate, the scope, plan and findings of the independent public accountants'
annual  audit,  recommendations  of the  accountants,  the  adequacy of internal
accounting   controls  and  audit   procedures,   Holdings'   audited  financial
statements,  non-audit services performed by the independent public accountants,
and fees paid to the  independent  public  accountants  for audit and  non-audit
services.

         The  Compensation  Committee  recommends  to the Board of Directors the
compensation  of all officers and administers  Holdings' 1997  Directors'  Stock
Option Plan . It also  recommends to the Board of Directors  the  qualifications
for new Director nominees,  candidates for nomination,  and policies  concerning
director  compensation and length of service.  During 1998 cash compensation for
non-employee  outside  directors  was  passed  on by the  full  Board  upon  the
recommendation of the employee directors.

Compensation of Directors

           Non-employee directors of Holdings receive compensation consisting of
annual cash  retainers and meeting fees.  Each director also receives a one-time
option to purchase 15,000 shares of Holdings' common stock.

           Cash  Compensation.  Directors  who are not employees of Holdings are
paid an annual  retainer  for Board  service of $15,000  and a fee of $2,000 for
each  meeting  of the Board or a Board  committee  attended.  Directors  who are
employees of Holdings,  which presently  consist of Messrs Jacobs and Fitzwater,
are not paid any fee or additional  remuneration  for services as members of the
Holdings Board or any committee thereof.

     Directors'  Stock  Options.  Pursuant to Holdings'  1997  Directors'  Stock
Option  Plan,  each  director  of  Holdings  received on adoption of the plan in
September 1997, a one-time grant of an option to purchase 15,000

                                       111

shares of Holdings'  common stock for a purchase  price equal to the $26.50 fair
market  value of the stock on the date of grant.  The  options  expire ten years
from the date of grant  and  become  exercisable  at the rate of 5,000 per year,
commencing  with the first  anniversary of the date of grant.  Unvested  options
<PAGE>

become  exercisable  immediately in the case of a liquidation or dissolution,  a
merger or consolidation  which contemplates that a director will not continue in
office  following the  transaction  or in the case of certain  change-in-control
events. Upon termination of the director's term of office, options expire (i) on
the earlier of twelve  months  following  death or the end of the option term in
the case of termination in connection with a merger, consolidation, liquidation,
dissolution or certain change-in-control events, (ii) after one year in the case
of termination  due to or followed  within 90 days by death,  and (iii) after 90
days in all other cases.
                                       112

Compensation of  Executive Officers

           The  following  table sets forth  compensation  received by Holdings'
Chief Executive Officer and the only other executive  officers holding office at
December 31, 1998 whose salary and bonus for 1998  aggregated  $100,000 or more,
for services rendered in all capacities to Holdings and its subsidiaries for the
last three years.
<TABLE>
<CAPTION>
                                            Summary Compensation Table


                                                                                Long-Term
                                                                              Compensation
                                                                                 Awards
                                                                               Securities
                                                                               Underlying
                                               Annual Compensation (1)        Options/SARs
                                              -------------------------                         All other Compensation
   Name and Principal Position        Year    Salary ($)       Bonus($)             #                  ($)(2)
   ---------------------------        ----    ----------       --------             --                 ------
<S>                               <C>         <C>             <C>               <C>              <C> 
P0. Anthony Jacobs, President         1998       $   39,583       -0-                     -0-        $     -0-
   and Chief Executive Officer        1997          112,423       -0-               18,000(3)          797,259
   of Holdings                        1996          249,590       -0-                4,000(4)           44,110


W. T. Grant II, Chairman of           1998          164,769      107,261(6)               -0-           21,670
   the Board, President and           1997       232,363(5)      131,173(6)         78,000(7)          900,255
   Chief Executive Officer of         1996          331,000             -0-          4,000(4)           25,227
   LabOne
- ----------
</TABLE>

(1)      Compensation deferred at the election of an executive officer, pursuant
         to Holdings' or its subsidiaries' 401(k) Plans, is included in the year
         earned.










<PAGE>

(2)       Includes  the  following  contributions  paid or  accrued to the named
          executive's accounts in Holdings', or one of its subsidiaries', as the
          case may be, 401(k) Plan  ("401(k)") and Money  Purchase  Pension Plan
          ("MPP"), pursuant to a Supplemental Retirement Agreement ("SERP") with
          said executive and for term life insurance for said executive:
<TABLE>
<CAPTION>

                                                                                                Term Life Ins
                           401(k)                   MPP                     SERP                  Premiums            
                  -----------------------   ----------------------  ----------------------  ---------------------
     Executive      1998     1997   1986    1998     1997   1996     1998    1997    1996    1998   1997    1996
     ---------      ----     ----   ----    ----     ----   -----    ----    ----    ----    ----   ----    ----
     <S>        <C>      <C>    <C>     <C>      <C>    <C>      <C>    <C>      <C>      <C>    <C>    <C>
     Mr. Jacobs    $    0  $    0  $4,750  $     0  $   0  $15,476  $   0  $143,197 $22,309  $   0  $ 656  $1,575
     Mr. Grant      4,526   9,922   4,750   16,421      0   15,476      0    38,201   2,914    723    870   2,087
</TABLE>

                  Holdings'  401(k) Plan and Money  Purchase  Pension  Plan were
         terminated effective as of December 31, 1996. Mr. Grant received $9,922
         pursuant  to  LabOne's  401(k)  Plan in 1997 and  $4,526 in 1998.  Also
         includes (i) severance payments to Messrs. Grant and Jacobs of $809,851
         and $610,802, respectively and (ii) payment of accrued vacation amounts
         upon  termination of employment to Messrs.  Grant and Jacobs of $39,851
         and $37,360, respectively.

(3)  Consists of options to purchase (i) 15,000 shares of Holdings  common stock
     and (ii) 3,000 shares of common stock of LabOne.

(4)  Consists entirely of options to purchase shares of common stock of Response
     Oncology,  Inc.  Numbers  have been  adjusted  to reflect a 1 for 5 reverse
     stock split effective November 1995.

(5)  Since  November  1995,  Mr. Grant has served as President,  Chairman of the
     Board and Chief Executive  Officer of LabOne,  an 80.5% owned subsidiary of
     Holdings; however, Mr. Grant had received cash

                                       113

compensation only from Holdings  until June 1, 1997. At such time his employment
     with  Holdings  was  terminated.  Holdings  paid Mr. Grant a base salary of
     $146,344 from January 1, 1997 to May 31, 1997. LabOne paid Mr. Grant a base
     salary of $86,019 from June 1, 1997 to December 31, 1997.

(6)  Reflects cash bonuses paid to Mr. Grant by LabOne for services  rendered to
     LabOne.

(7)  Consists of options to purchase (i) 75,000 shares of common stock of LabOne
     and (ii) 3,000 shares of Response Oncology, Inc.









<PAGE>

                 AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR
                           AND YEAR-END OPTION VALUES

         The table below provides information on option exercises in 1998 by the
named executive officers and the values of such officers' unexercised options at
December 31, 1998.  No options were granted to any of those  executive  officers
during 1998.

<TABLE>
<CAPTION>

                                                Number of Securities Underlying     Value of Unexercised
                                                       Unexercised Options          In-the-Money Options
                          Shares                        at Year-End (#)                at Year-End ($)        
                        Acquired on    Value     --------------------------------   ---------------------------
        Name            Exercise (#)  Realized   Exercisable   Unexercisable         Exercisable    Unexercisable
        ----            ----------    --------   -----------   -------------        -------------   -----------    
<S>                    <C>          <C>        <C>            <C>              <C>              <C>
P. Anthony Jacobs          -0-          -0-        5,000(1)       10,000           $     -0-        $      -0-
W.T. Grant II              -0-          -0-       42,431(2)       60,000(2)          84,007                -0-
- ------------
</TABLE>

(1)  Consists entirely of shares of Holdings common stock.

(2)  Consists  entirely of options to purchase  shares of common stock of LabOne
     and the value (i.e.  market  value of  underlying  securities  minus option
     exercise price) at December 31, 1998 of such options.

         REPORT OF THE COMPENSATION COMMITTEE ON EXECUTIVE COMPENSATION

         Set forth  below is the  report of the  compensation  committee  of the
Board of Directors of Holdings. The report covers all officers of Holdings other
than Mr. Grant,  who is the Chairman,  President and Chief Executive  Officer of
LabOne.  The  compensation  committee did not, and Holdings'  Board of Directors
also  does  not,  have  responsibility  for  and  in  fact  does  not  establish
compensation policy for officers and employees of LabOne. The Board of Directors
of LabOne has its own compensation  committee,  which  establishes  compensation
policies for the executive officers of LabOne.

                      Report of the Compensation Committee

     Compensation   Committee   Interlocks   and  Insider   Participation.   The
compensation  committee of the Board of Directors of Holdings  consists  John H.
Robinson,  Jr. (Chairman) and Lan C. Bentsen . Mr. Robinson and Bentsen, who are
non-employee  directors  of  Holdings,  have not been  employees  or officers of
Holdings or any of its  subsidiaries and have had no relationship or transaction
with Holdings requiring disclosure under Item 404 of Regulation S-K.

         This report is  provided by the  committee  to assist  stockholders  in
understanding the committee's philosophy in establishing the compensation of the
Chief  Executive  Officer and all other  executive  officers of Holdings for the
year ended December 31, 1998.

         Overview and Compensation Philosophy. During 1996, Holdings initiated a
restructuring  process that  contemplated the distribution of most of its assets
other than LabOne and Response  Oncology to Holdings'  stockholders  through the
SLH Distribution. That distribution was effected on March 3, 1997. In connection
<PAGE>

with SLH's move to new facilities and the termination of a lease between SLH and
Holdings on June 1, 1997, Holdings and SLH entered into an agreement whereby SLH
hired all of Holdings' existing employees and agreed to provide

                                       114

to Holdings management and administrative  services and certain office space for
an annual fee of $75,000.  This  arrangement  was entered  into at the time that
Holdings was effecting a second distribution to Holdings' stockholders of all of
the common  stock of Response  Oncology  owned by  Holdings.  That  distribution
occurred  on  July  25,  1997.  As  a  consequence   of  the  SLH  and  Response
Distributions and the Services Agreement, Holdings had no employees between June
1, 1997,  and August 7, 1998.  On August 7, 1998,  the  Services  Agreement  was
terminated  due to  the  merger  of  SLH  and  Syntroleum  Corporation,  thereby
necessitating a restaffing of Holdings.  In anticipation of the need to restaff,
the compensation  committee engaged McDaniel & Associates,  Inc., a compensation
consultant,  in the  spring of 1998 to assist  the  committee  in  developing  a
compensation  structure  for  Holdings'  executive  officers,  who would  become
Holdings employees.

         In developing a new  compensation  structure  the committee  focused on
tying Holdings'  business strategy to three basic elements of compensation:  (a)
base   compensation,   (b)  severance  pay  and  (c  )  existing   stock  option
arrangements.  The principal business of Holdings is to manage its investment in
LabOne.  Although  negotiations  for the  merger of the two  companies  had been
terminated in 1997,  the committee  recognized  that the long-term  interests of
both  companies and  stockholder  groups was to engage in a combination  or some
other  strategic   transaction.   Accordingly,   the  committee   believed  that
compensation  should  be  structured  to ensure  the  continuity  of  management
necessary to effectively pursue this strategy or to pursue other strategies that
might develop under the circumstances.

         Consistent  with these  goals,  Mr.  Jacobs,  the  President  and Chief
Executive Officer, Mr. Fitzwater, the Executive Vice President,  Chief Operating
and Financial Officer, Treasurer and Secretary and Ms. McCoy, the Vice President
and Chief Accounting  Officer,  were offered employment  agreements that provide
base compensation of $100,000, $100,000 and $70,000, respectively, and severance
pay of two years' base salary for Messrs.  Jacobs and  Fitzwater  and one year's
base pay for Ms. McCoy.

         The committee also concluded that an amendment to the stock option plan
was  necessary to render it effective.  Under the plan,  options would expire 90
days following the  termination of director  status.  Since the $26.50  exercise
price of all options granted under the plan was  significantly  above the market
price of Holdings'  stock,  it was concluded  that benefits under the plan would
have no value  should  Holdings be  successful  in  implementing  its  strategy.
Accordingly,  the committee  recommended  an amendment,  which was  subsequently
adopted by the Board,  that would  permit an  optionee  that was  terminated  in
connection  with a strategic  transaction to exercise the option through the end
of the option term, all of which expire on September 17, 2007.

         Compensation of the Chief  Executive  Officers for 1998. The components
of the 1998 compensation of P. Anthony Jacobs, the President and Chief Executive
Officer  of  Holdings,  were  also  determined  in  accordance  with  the  above
discussion.  Mr. Jacobs base compensation was set at $100,000 under the terms of
an  employment  agreement  as  described  above.  Mr.  Jacobs,  as a director of
Holdings,  is also the holder of options to purchase  15,000 shares of Holdings'
common stock at a price of $26.50 per share. As described above, that option was
<PAGE>

amended in August 1998, to extend the option exercise period upon termination of
his status as a director in connection with a merger, consolidation, liquidation
or certain change in control transactions.

     This report is being made over the names of John H.  Robinson,  Jr. and Lan
C. Bentsen, who are the present members of the committee.

Performance of Holdings' Common Stock

         The following  performance  graph compares the performance of Holdings'
common stock during the period  beginning on January 1, 1994 and ending December
31, 1998, to a NASDAQ Stock Market index (the "NASDAQ  Composite"  consisting of
U.S.  companies),  and a peer group  referred to as the "LabOne Peer Group." The
NASDAQ  Composite  index is one  provided by the Center for Research in Security
Prices of the  University of Chicago.  The LabOne Peer Group is a group of seven
testing laboratories  selected by LabOne  (Bio-References Labs, Laboratory Corp.
Of America, Oncormed, Pharmchem, Psychemedics, Unilab and Universal Standard

                                       115

Medical).  The  performance  graph published by Holdings last year also included
the Russell 2000 Index. This is an index of companies,  the mean of whose market
capitalizations  approximated that of Holdings before its 1997  distributions of
SLH Corporation and Response  Oncology,  Inc. The Russell 2000 Index was deleted
from this year's graph due to the decline in Holdings' market  capitalization as
a result of the SLH and Response distributions.  Holdings' total return for 1998
decreased compared to the return reflected by the Russell 2000 Index.

         The graph assumes a $100  investment  in Holdings'  common stock and in
each of the  indexes  at the  beginning  of the  period  and a  reinvestment  of
dividends paid on those investments  throughout the period.  Since dividends are
included,  the  graph  reflects  the 1997 SLH and  Response  distributions,  the
equivalent cash value of which were $4.78 and $7.31 per share, respectively.

                            VALUE OF $100 INVESTMENTS
        AT DECEMBER 31, 1993 AND AT EACH SUBSEQUENT DECEMBER 31, THROUGH
              DECEMBER 31, 1998, ASSUMING REINVESTMENT OF DIVIDENDS



   [Performance Graph which shows the information provided in the table below]

<TABLE>
<CAPTION>

Year End Data             1993           1994        1995         1996         1997        1998
- -------------             ----           ----        ----         ----         ----        ----
<S>                   <C>           <C>         <C>          <C>          <C>        <C>    
Lab Holdings, Inc.       $100.00       $ 99.67     $102.30      $120.53      $108.45    $ 86.74
NASDAQ Composite Index    100.00         97.75      138.26       170.01       208.58     293.21
LabOne Peer Group         100.00         89.51       67.97        26.49        22.13      20.38
</TABLE>





                                       116
<PAGE>

                    Security Ownership of Holdings Management

         The  following  table and notes  thereto  indicate the shares of common
stock of Holdings and of LabOne,  known to Holdings to be beneficially  owned as
of December 31, 1998, respectively, by each director (including the nominees for
election as a directors) of Holdings,  each of the executive  officers  named in
the Summary  Compensation  Table  beginning on page 90, and by all directors and
executive  officers of Holdings as a group.  The table also reflects  beneficial
ownership in the combined  company as if the merger had occurred at December 31,
1998.
<TABLE>
<CAPTION>


                                                                                           
                                                                                            Shares of
                                                                         Shares of          Combined     
                                                                           Common            Company     
                             Shares of Holdings                        Stock of LabOne     Beneficially 
                                Common Stock             Percentage      Beneficially       owned After  Percentage
   Name                    Beneficially Owned (1)(3     of Class (2)    Owned (1)(4)(5)       Merger        (8)
   ----                        ----------------       ---------------   ---------------       ------     ---------
<S>                            <C>                      <C>               <C>           <C>            <C>    
Lan C. Bentsen                      6,000                    --               -0-             9,000          --
Steven K. Fitzwater                 6,932                    --                5             10,403          --
W. T. Grant II (6)                138,089                    2.1%             81,596(7)     288,729       2.3 -2.6%
P. Anthony Jacobs                   6,780                    --               -0-            10,170          --
John H. Robinson, Jr                6,652                    --               -0-             9,978          --
All directors, nominees           164,453                    2.2%             81,601(7)     328,280        2.6-3.0%
   and executive officers
   as a group of six
- -----------------
</TABLE>

(1)  A  beneficial  owner of a  security  includes  a person  who,  directly  or
     indirectly,  has or shares voting or investment  power with respect to such
     security.  Voting  power is the power to vote or direct  the  voting of the
     security  and  investment  power is the  power to  dispose  or  direct  the
     disposition of the security.  Each person listed has stated that he, either
     alone or with his spouse,  has sole voting power and sole investment  power
     with respect to the shares shown as beneficially owned, except as otherwise
     indicated.

2)   The percentages  represent the total number of shares of common stock shown
     in the  adjacent  column  divided by the  number of issued and  outstanding
     shares  of  common  stock  as of  December  31,  1998  (6,489,103  shares).
     Percentages of less than one percent are omitted.

3)   Shares of Holdings common stock shown as beneficially  owned include shares
     issuable upon the exercise of stock options granted under the Lab Holdings,
     Inc. 1997  Directors'  Stock Option Plan that were  exercisable on December
     31, 1998 or that become exercisable within 60 days thereafter,  as follows:
     5,000 shares for each of Messrs Bentsen, Fitzwater, Jacobs and Robinson and
     20,000 shares for all directors and executive officers as a group.




<PAGE>
4)   Shares of LabOne stock shown as beneficially  owned include shares issuable
     upon the  exercise  of stock  options  granted  under the LabOne  Long-Term
     Incentive  Plan that were  exercisable  on December 31, 1998 or that become
     exercisable within 60 days thereafter,  as follows:  W. T. Grant II, 57,431
     shares; and all directors and executive officers as a group, 57,431 shares.

5)   Percentages of shares beneficially owned are less than 1% for all directors
     and executive  officers,  individually  and as a group; the shares shown as
     beneficially  owned do not  include  10,712,200  shares of LabOne  owned by
     Holdings  as to which each  director  of  Holdings  has  shared  voting and
     investment  power as a member of Holdings'  Board of Directors.  Each Board
     member  disclaims  beneficial  ownership  of the  LabOne  shares  owned  by
     Holdings.

(6)  Includes  22,442  shares  held  by W.  T.  Grant  II as  custodian  for his
     children;  includes  45,000  shares held in a family  trust for which W. T.
     Grant II serves as a  co-trustee  and in that  capacity  shares  voting and
     investment

                                      117

     powers; also includes 12,480 shares owned by the wife of W. T. Grant II, as
     to which he disclaims beneficial ownership.

(7)  Includes the 22,365 shares of LabOne  common stock held in an  individually
     directed account of Mr. Grant under LabOne's 401(k) profit-sharing plan, as
     to which Mr. Grant has sole investment power only.

(8)  Assumes that none of the  beneficial  owners will elect to exchange  LabOne
     shares  for cash.  The two  percentages  for each  beneficial  owner of the
     combined  company  reflect  percentage  of  beneficial  ownership  over  1%
     assuming that LabOne  stockholders other than Holdings elect all stock (the
     lower number) or maximum cash (the higher number).






<PAGE>
Security Ownership of Certain Other Beneficial Owners of Holdings Common Stock

         The  following  table  indicates  the shares of Holdings  common  stock
beneficially  owned by the only  persons  (other  than  persons set forth in the
preceding table) known to Holdings or its management as beneficially owning more
than five percent of Holdings'  common stock as of December 31, 1998.  The table
also reflects beneficial  ownership in the combined company as if the merger had
occurred at December 31, 1998.
<TABLE>
<CAPTION>

                                                                                                     Shares of
                                                                                                     Combined
                                                                                                     Company           After
                                                                                        Percent    Beneficially       Merger
  Name and Address of Beneficial Owner                Amount and Nature                   of       Owned After     Percentage
  ------------------------------------
                                                   of Beneficial Ownership             Class (1)    Merger (3)           (3)
                                                   -----------------------             ---------    ------           -------
<S>                                   <C>                            <C>             <C>       <C>               <C>         
American Century Companies, Inc.         Total -                        682,100(2)       10.5%     1,023,150         8.3-9.3%
4500 Main Street                            sole voting power -         682,100    
P. O. Box 418210                            shared voting power -         -0-
Kansas City, Missouri 64141-9210            sole disposition power -    682,100
                                            shared disposition power -    -0-

Wallace R. Weitz & Company               Total -                         881,454(2)     13.58%      1,322,181      10.7-12.0%
9290 West Dodge Rd., Suite 405              sole voting power -          881,454    
Omaha, Nebraska 68114                        shared voting power -        -0-
                                             sole disposition power -    881,454
                                             shared disposition power -   -0-

The Southern Fiduciary Group, Inc.       Total -                         467,192          7.2%        700,788        5.7-6.3%
2325 Crestmoor road, Suite 202              sole voting power -           76,000 
Nashville, Tennessee                        shared voting power -         -0-
                                            sole disposition power -     391,192
                                            shared disposition power -    -0-

William D. Grant                         Total -                       1,086,616         16.7%      1,668,665      13.5-15.1%
One Ward Parkway, Suite 130                 sole voting power -          500,441
Kansas City, Missouri 64112                 shared voting power -        586,206(3)
                                            sole disposition power -     500,441
                                            shared disposition power -   586,206(3)
- -----------
</TABLE>

(1)  The percentage  represents the total number of shares of common stock shown
     in the  adjacent  column  divided by the  number of issued and  outstanding
     shares of common stock as of December 31, 1998.


                                       118

(2)  As reported in a Schedule 13G filed by the owner as of December 31, 1998.

(3)  Number of shares  reflect  total shares only from prior column and does not
     take into account  shares of LabOne  common stock that may be  beneficially
     owned,  other than 38,695 shares of LabOne common stock  beneficially owned
     by W.D. Grant.  Mr. Grant has represented  that he does not intend to elect
<PAGE>
     cash for any LabOne shares  beneficially  owned by him. The two percentages
     for each beneficial  owner of the combined  company  reflect  percentage of
     beneficial  ownership assuming that LabOne stockholders other than Holdings
     elect all stock (the lower number) or maximum cash (the higher number).

Certain Relationships and Related Transactions

         Employment  Agreements and Termination of Interim  Services  Agreement.
Effective August 7, 1998,  Holdings entered into employment  agreements with Mr.
Jacobs,  Mr.  Fitzwater  and Ms. McCoy,  all of whom are  executive  officers of
Holdings.  Each  employment  agreement  provides for employment of the executive
officer for a term commencing on August 7, 1998, and continuing  until the third
anniversary  of that date (the  second  anniversary  in the case of Ms.  McCoy's
agreement).  The  term is  extended  for  successive  one year  periods  on each
anniversary of the agreement  unless notice of  non-extension is given by either
party to the other prior to that anniversary.

         The initial base compensation  payable under the employment  agreements
is $100,000 for each of Mr. Jacobs and Mr.  Fitzwater and $70,000 for Ms. McCoy.
It is subject to adjustment  annually by the Board of  Directors,  provided that
base salary may not be decreased by more than five percent year to year.

         If the officer is terminated  for cause or  voluntarily  terminates his
employment  with  Holdings,  then,  Holdings  will not be  obligated  to pay the
officer  any  amounts  of  compensation  or  benefits   following  the  date  of
termination.  A voluntary termination does not include a resignation tendered at
the  request  of  the  Board  or  following  or in  connection  with  a  merger,
consolidation,  liquidation, dissolution or certain change in control events. If
the officer is  terminated  without  cause,  Holdings  will  continue to pay the
officer amounts equal to his base compensation,  as in effect at the time of the
termination without cause, for the remaining term of this employment  agreement,
but in no event may the  payments  continue  for a period of more than two years
following the  termination  in the case of Mr. Jacobs and Mr.  Fitzwater and for
more than one year in the case of Ms.  McCoy.  In that case,  Holdings will also
reimburse  the  officer for the cost of the  officer's  health  insurance  as in
effect at the date of termination.  The merger agreement  described elsewhere in
this  report   contemplates   that  each  of  the  officers  will  tender  their
resignations  at the closing of the  merger.  Under the  employment  agreements,
those  resignations  will  effect  terminations  of the  employment  agreements,
without  cause so that each will be entitled  to receive  payments of their base
compensation  and health insurance  benefits as described  above.  Copies of the
employment  agreements are appended to Holdings' Form 10-Q for the quarter ended
September 30, 1998.














                                       119

<PAGE>
                        HOLDINGS ANNUAL MEETING PROPOSALS

                   PROPOSAL TO AMEND ARTICLES OF INCORPORATION
                        Proposal 1 on Holdings Proxy Card

General

         The Holdings Board of Directors recommends to the Holdings stockholders
that they adopt an amendment to paragraph B.4 of Article X of Holdings' Articles
of Incorporation so that, as amended, such paragraph will provide as follows.

                  "Any  action  required  to be taken by vote of the  Continuing
                  Directors  shall be  effective  only if taken at a meeting  at
                  which a "Continuing  Director  Quorum" is present,  which term
                  shall mean two-thirds of the Continuing  Directors  capable of
                  exercising the powers conferred upon them under the provisions
                  of  the  Articles  of  Incorporation  or  the  Bylaws  of  the
                  Corporation or by law."

         The  purpose  of  this   amendment  is  to  change  the  definition  of
"Continuing  Director  Quorum"  from nine  Continuing  Directors,  as defined in
Article X, to two-thirds of the Continuing  Directors.  The affirmative vote, in
person or by proxy,  by the  holders of a majority of the  outstanding  Holdings
common  stock is  required  to adopt the  Articles  Amendment.  If the  Articles
Amendment is approved,  the requisite  affirmative  vote of stockholders for the
merger will be 66 2/3% instead of 80%.  Adoption of the Articles  Amendment is a
condition to the  effectiveness  of the merger agreement and consummation of the
merger.

Background for the Articles Amendment.

         Article X of  Holdings'  Articles of  Incorporation  is a "fair  price"
provision which applies to certain "business  combinations"  involving  "related
persons",  as therein defined. One type of business combination to which Article
X applies is a merger of Holdings  into a subsidiary  that will have the effect,
directly or indirectly, of increasing the proportionate share of Holdings common
stock  owned by any  person  beneficially  owning 10% of  Holdings'  outstanding
common stock.  William D. Grant,  a director of LabOne,  beneficially  owns more
than 10% of Holdings'  outstanding  common stock and also owns ______  shares of
LabOne common stock.  Mr. Grant has  represented to LabOne that he will elect to
receive stock for his shares of LabOne common stock in the merger, and therefore
the  merger  may be deemed to have the effect of  increasing  his  proportionate
interest in  Holdings  relative to other  Holdings  stockholders  who do not own
LabOne common stock.

         If the  merger  is a  business  combination  under  Article  X, then it
generally can only be effected under one of the following conditions:

(a)  if the merger is approved by the affirmative  vote of the holders of 80% of
     the outstanding Holdings common stock;

(b)  if the per share fair  market  value of the  Holdings  shares  retained  by
     Holdings stockholders in the merger equals or exceeds the greater of

               (i) the highest  price per share  offered or paid by Mr. Grant at
          any time after March 8, 1994, which,  based on Form 4s filed by him in
          August of 1994, appears to be $36.80,


<PAGE>

               (ii) a price that  includes the same or greater  premium over the
          market   price  of  Holdings   common  stock   immediately   prior  to
          announcement of the merger as the greatest  premium (if any) paid over
          market price by Mr. Grant at any time after March 8, 1994,

                                       120

                          and

               (iii)  the  value  determined  as fair to  Holdings  stockholders
          (other than Mr.  Grant) by an  investment  banking firm  selected by a
          two-thirds vote of the "Continuing  Directors",  as defined in Article
          X, or by the Missouri Director of Insurance; or

(c)  if  the  merger  is  approved  by a  two-thirds  vote  of  the  "Continuing
     Directors",  taking  into  consideration  various  matters,  including  the
     current  market  price of  Holdings  common  stock,  the  current  value of
     Holdings in a freely  negotiated  transaction and the Continuing  Directors
     estimate of Holdings future value as a independent going concern.

         Holdings  notes that because  historical  market prices exceed  current
values,  the value of the shares to be retained by Holdings  stockholders in the
merger likely will not satisfy the condition described in clause (b) above.

         Although the merger has been approved by a unanimous  vote of Holdings'
Board  of  Directors,  and  although  Holdings  believes  that  each of its four
directors  is a  "Continuing  Director" as defined in Article X, action taken by
such persons in approving a business combination is effective only when taken at
a meeting at which a  "Continuing  Director  Quorum" is  present.  As defined in
Article X, this term means nine Continuing Directors, which is five more persons
than presently  serve on the Holdings Board of Directors.  Because of the manner
in which "Continuing  Director Quorum" is defined, it is not possible to satisfy
the condition described in clause (c) above with the current Board complement.

         Current  management is not certain why  two-thirds  was not  originally
used as a defining term for Continuing  Director Quorum in Holdings' Articles of
Incorporation  instead of the number nine, but believes the reason may have been
that initial  plans for Holdings  called for a 14 member  board,  and the number
nine was selected to avoid  confusion over a resulting  fraction.  In any event,
over the  years  the  size of  Holdings'  Board  has  been  reduced  so that the
Continuing  Director  Quorum  provision of Article X does not work under current
conditions.

         Article XI of Holdings  Articles of Incorporation  permit the amendment
of Article X by the  affirmative  vote of a majority  of  Holdings'  outstanding
common  stock when such  amendment  is  recommended  by a unanimous  vote of the
entire Holdings  Board.  In light of the opinion of its financial  advisor as to
the  fairness of the terms of the merger to Holdings  and its own  deliberations
concerning the merger, the Holdings Board of Directors has unanimously  approved
the Articles Amendment and directed that it be submitted to the stockholders for
their  approval at the annual  meeting.  Holdings  believes that if the Articles
Amendment  is  approved,  the  conditions  of clause  (c)  above  will have been
satisfied.


         The  Board  of  Directors  recommends  that  stockholders  vote FOR the
Articles Amendment.

<PAGE>
                    PROPOSAL TO ELECT TWO HOLDINGS DIRECTORS

         The proposal to elect two  directors is included  only to satisfy legal
requirements  in  connection  with the  Holdings  annual  meeting and to provide
directors in the event the merger is not  consummated.  Upon  completion  of the
merger,  the directors and executive officers of the combined company will be as
described under "Management of LabOne and Management After the Merger."

General

         Two  directors  are to be  elected  at the  annual  meeting  for  terms
expiring on the earlier of the effective  time of the merger or until the annual
meeting of stockholders in 2002. Absent written instructions to the

                                       121

contrary, proxies representing shares of Holdings common stock will be voted FOR
the election of each of the persons  listed below as directors of Holdings for a
term of three years and until their  successors  are duly elected and qualified.
However, if the merger is consummated,  P. Anthony Jacobs,  Steven K. Fitzwater,
Lan C. Bentsen, and John H. Robinson, Jr. will resign as members of the Holdings
Board of Directors and, pursuant to the merger Agreement,  the persons listed as
holding  director  positions  under  "Management  of Combined  Company After the
Merger" on page 96 will become  directors of the combined company to hold office
until their  successors are duly elected and qualified at the applicable  Annual
Meeting  of  Stockholders.   See  "Management  of  Combined  Company  After  the
Merger-Directors and Executive Officers of Combined Company After the Merger" on
page 96.

         If any nominee for director  should be unable or decline to serve,  the
authority  provided in the proxy to vote for the election of  directors  will be
exercised to vote for a substitute or substitutes.  As of the date of this Joint
Proxy  Statement/Prospectus,  Holdings has no knowledge that any of the nominees
will be unable or will  decline to serve.  None of the  nominees  has any family
relationship among themselves or with any executive officer of Holdings.

Information Concerning Nominees to the Holdings Board of Directors

         Set forth below are the names and  descriptions  of the  backgrounds of
the  nominees for  election as  directors  of  Holdings.  Each of Holdings'  two
nominees for election to the Holdings Board of Directors is currently serving as
a director of Holdings and each has agreed to serve if elected.



                Name                      Age               Position
                ----                      ---               --------
John H. Robinson, Jr............           48            Class B Director
Lan C. Bentsen..................           50            Class B Director


     Mr.  Robinson has been a director  since 1990 and has been  Chairman of the
Board since September 1997. He is Managing Partner of Black & Veatch (design and
construction).  Mr. Robinson also is a director of Commerce Bancshares, Inc. and
Coeur d'Alene Mines Corporation (gold and silver mining).

     Mr.  Bentsen has been a director since 1986. He has been the Executive Vice
President of Frontera  Resources  since 1996 (oil and gas). From 1994 to 1996 he
was Managing Partner of Remington Partners  (investments).  Prior to its sale in
<PAGE>

1994, Mr. Bentsen was Chairman and Chief Executive Officer of Sovereign National
Management, Inc. (property management).
         There are no family  relationships,  of first  cousin or closer,  among
Holdings' directors or executive officers, by blood, marriage or adoption.

Vote

         Directors  will be elected by a favorable  vote of a  plurality  of the
shares of voting stock present and entitled to vote,  in person or by proxy,  at
the annual  meeting.  Accordingly,  abstentions  or broker  non-votes  as to the
election of directors will not affect the election of the  candidates  receiving
the plurality of votes.  Shares may be voted  cumulatively  and  therefore  each
Holdings  stockholder may cast two votes for each share owned. Unless instructed
to the  contrary,  the shares  represented  by the proxies will be voted FOR the
election of the two nominees named above as directors.

                                       122

                    PROPOSAL TO APPROVE AND RATIFY HOLDINGS'
                  APPOINTMENT OF INDEPENDENT PUBLIC ACCOUNTANTS

         The Board of Directors of Holdings has  appointed  the firm of KPMG LLP
as Holdings'  independent  public  accountants  for 1998.  KPMG LLP has been the
Holdings'  independent public  accountants since inception.  A representative of
KPMG LLP will be available at the annual  meeting and will have the  opportunity
to make a statement if he or she desires to do so and to respond to  appropriate
questions. If the merger is approved, management of the combined company intends
to review the selection of its independent public accountants for 1999.

         The  Board  of  Directors  recommends  a  vote  FOR  the  approval  and
ratification  of the  appointment  of KPMG LLP as Holdings'  independent  public
accountants for the 1999 fiscal year.

                                     EXPERTS

         The financial  statements and the related financial statement schedules
included in the Holdings  Annual Report on Form 10-K for the year ended December
31, 1998, that are incorporated  herein by reference,  have been audited by KPMG
LLP, independent public accountants,  as stated in their reports included in the
Form 10-K, and have been  incorporated by reference herein in reliance upon such
reports  given upon the  authority  of that firm as experts  in  accounting  and
auditing.

         The audited financial statements of LabOne included in this Joint Proxy
Statement/Prospectus  and  elsewhere  in the  registration  statement  have been
audited by KPMG LLP,  independent  public  accountants,  as  indicated  by their
report with  respect  thereto,  and are  included  herein in  reliance  upon the
authority of said firm as experts in giving said report.

         Representatives  of KPMG LLP are  expected  to be present at the annual
meetings of Holdings and LabOne,  where they will have the opportunity to make a
statement  if  they  desire  to do so  and  will  be  available  to  respond  to
appropriate questions.

                                  LEGAL MATTERS

         The legality of the Holdings  common stock to be issued pursuant to the
merger has been passed upon for  Holdings by Lathrop & Gage L.C.,  Kansas  City,
<PAGE>

Missouri.  Lathrop & Gage L. C. also will pass upon certain  federal  income tax
matters in  connection  with the  Merger.  See "The  Proposed  Merger -- Certain
Federal Income Tax Consequences" on page 45.

                          FUTURE STOCKHOLDER PROPOSALS

         If the merger is not consummated,  it is currently anticipated that the
annual  meeting of  stockholders  of  Holdings  will be held on or about May 11,
2000.  Holdings  stockholders  who wish to present  proposals  for action at the
Holdings  annual meeting should submit their  proposals to Holdings at 5000 West
95th  Street,  Suite 260,  Shawnee  Mission,  Kansas  66207.  Proposals  must be
received by  Holdings no later than  December  13,  2000 for  consideration  for
inclusion  in next  year's  proxy  statement  and proxy.  In  addition,  proxies
solicited by Holdings  management may cover  discretionary  authority to vote on
matters  which are not included in the proxy  statement  but which are raised at
the annual meeting by stockholders  unless Holdings  receives  written notice of
the matters at that address on or before ___________, 2000.

         If the merger is not consummated,  it is currently anticipated that the
annual meeting of stockholders of LabOne will be held on or about _____________,
2000. LabOne stockholders who wish to present proposals for action at the LabOne
annual  meeting  should  submit  their  proposals  to  LabOne  at  10101  Renner
Boulevard,

                                       123

Lenexa,  Kansas  66219.  Proposals  must be  received  by LabOne  no later  than
________,  2000 for  consideration  for inclusion in next year's proxy statement
and  proxy.  In  addition,  proxies  solicited  by LabOne  management  may cover
discretionary  authority to vote on matters  which are not included in the proxy
statement  but which are raised at the annual  meeting  by  stockholders  unless
LabOne  receives  written  notice of the  matters  at that  address on or before
___________, 2000.

         If the merger is  consummated,  it is  currently  anticipated  that the
annual meeting of stockholders of the combined  company will be held on or about
_____________,  2000.  Stockholders who wish to present  proposals for action at
this annual  meeting  should submit their  proposals to the combined  company at
______________________________.   Proposals  must  be  received  no  later  than
________,  2000 for  consideration  for inclusion in next year's proxy statement
and proxy. In addition,  proxies solicited by the combined company's  management
may cover  discretionary  authority to vote on matters which are not included in
the proxy  statement but which are raised at the annual meeting by  stockholders
unless the  combined  company  receives  written  notice of the  matters at that
address on or before ___________, 2000.

                       WHERE YOU CAN FIND MORE INFORMATION

         Holdings  and LabOne each file  annual,  quarterly  and other  reports,
proxy  statements  and  other  information  with  the  Securities  and  Exchange
Commission.  You may read and copy any reports,  statements or other information
we file at the Securities and Exchange  Commission's  public  reference rooms in
Washington,  D.C.,  New York,  New York and Chicago,  Illinois.  Please call the
Securities and Exchange Commission at 1- 900-SEC-0330 for further information on
the public reference rooms. Our Securities and Exchange  Commission  filings are
also available to the public from commercial  document retrieval services and at
the  web  site   maintained  by  the  Securities  and  Exchange   Commission  at
"http://www.sec.gov."
<PAGE>

         Holdings  has filed a  registration  statement  on Form S-4 to register
with the  Securities  and Exchange  Commission  the Holdings  common stock to be
issued to LabOne  stockholders  in the  merger.  This  document is a part of the
registration  statement and  constitutes a prospectus of Holdings in addition to
being a proxy statement of Holdings and LabOne for the Holdings  meeting and the
LabOne meeting.  As allowed by Securities and Exchange  Commission  rules,  this
document does not contain all the information  you can find in the  Registration
Statement or the exhibits to the registration statement.

         The Securities and Exchange  Commission  allows us to  "incorporate  by
reference"  information  into this  document,  which means that we can  disclose
important  information  to  you  by  referring  you to  another  document  filed
separately  with  the  Securities  and  Exchange  Commission.   The  information
incorporated by reference is deemed to be part of this document,  except for any
information   superseded  by  information   in  this  document.   This  document
incorporates  by reference the documents set forth below that we have previously
filed with the  Securities  and Exchange  Commission.  These  documents  contain
important information about Holdings and its finances.

      Holdings SEC Filings (File No.0-16946)         Period or Date of Event 
      -------------------------------------          -----------------------
      Annual Report on Form 10-K,
       filed March 31, 1999                       Year ended December 31, 1998

      Current Report on Form 8-K,
       filed March 8, 1999                               March 7, 1999


        Holdings is also incorporating by reference additional documents that it
files with the Securities  and  Exchange  Commission  between  the  date of this
document and the date of the meetings.

     Holdings  has  supplied  all  information   contained  or  incorporated  by
reference in this document relating to

                                       124

Holdings and LabOne has supplied all such information relating to LabOne.

         If you are a  stockholder,  we may have sent you some of the  documents
incorporated  by  reference,  but you can obtain  any of them  through us or the
Securities and Exchange  Commission.  Documents  incorporated  by referenced are
available  from  us  without  charge,  excluding  all  exhibits  unless  we have
specifically incorporated by reference an exhibit in this document. Stockholders
may obtain  documents  incorporated  by reference in this document by requesting
them in writing or by  telephone  from the  appropriate  party at the  following
addresses:

         Lab Holdings, Inc.                            LabOne, Inc.
         5000 West 95th Street                         10101 Renner Blvd
         Suite 260                                     Lenexa, Kansas 66219
         Shawnee Mission, Kansas 66207                 (913) 888-1770
         (913) 648-3600





<PAGE>

         If you  would  like to  request  documents  from  us,  please  do so by
___________________, 1999 in order to receive them before the meetings.

         You should rely only on the  information  contained or  incorporated by
reference  in this  document  to vote on the  Holdings  proposal  and the LabOne
proposal.  We have not authorized anyone to provide you with information that is
different  from what is  contained  in this  document.  This  document  is dated
__________________________,  1999.  You should not assume  that the  information
contained in this document is accurate as of any date other than such date,  and
neither the mailing of this document to  stockholders of Holdings and LabOne nor
the issuance of Holdings common stock in the merger shall create any implication
to the contrary.











































                                       125


<PAGE>




                      INDEX TO LABONE FINANCIAL STATEMENTS
                                                                            Page

Independent Public Accountants' Report                                       F-2

Consolidated Financial Statements:      

  Consolidated Balance Sheets, December 31, 1998 and 1997                    F-3

  Consolidated Statements of Earnings, Years ended December 31, 1998,
     1997 and 1996                                                           F-5

  Consolidated Statements of Changes in Stockholders' Equity, Years ended
     December 31, 1998, 1997 and 1996                                        F-6

   Consolidated  Statements of Cash Flows,  Years ended  December 31, 1998,
     1997 and 1996                                                           F-7

   Notes to Consolidated Financial Statements                                F-9
































                                      F-1


<PAGE>
                     Independent Auditors' Report


The Board of Directors
LabOne, Inc.:

We have audited the accompanying consolidated balance sheets of LabOne, Inc. and
subsidiaries  as of  December  31,  1998 and 1997 and the  related  consolidated
statements of earnings,  changes in stockholders' equity and cash flows for each
of  the  years  in  the  three-year   period  ended  December  31,  1998.  These
consolidated  financial  statements  are  the  responsibility  of the  Company's
management.  Our  responsibility is to express an opinion on these  consolidated
financial statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable  assurance about whether the  consolidated  financial  statements are
free of material  misstatement.  An audit includes  examining,  on a test basis,
evidence  supporting the amounts and disclosures in the  consolidated  financial
statements.  An audit also includes assessing the accounting principles used and
significant  estimates  made by  management,  as well as evaluating  the overall
consolidated  financial  statement  presentation.  We  believe  that our  audits
provide a reasonable basis for our opinion.

In our opinion, the consolidated  financial statements referred to above present
fairly, in all material  respects,  the financial  position of LabOne,  Inc. and
subsidiaries  as of  December  31,  1998  and  1997  and the  results  of  their
operations and their cash flows for each of the years in the  three-year  period
ended  December 31, 1998,  in  conformity  with  generally  accepted  accounting
principles.

KPMG LLP


s/KPMG LLP
January 29, 1999, except as to
note 12, which is as of March 8, 1999

                                      F-2
<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                           Consolidated Balance Sheets
                           December 31, 1998 and 1997


Assets                                                       1998           1997
- --------------------------------------------------    -----------    -----------
Current assets:
   Cash and cash equivalents                          $10,177,740     18,284,672
   Short-term investments (note 1)                           --        1,204,638
   Accounts receivable, net of allowance
     for doubtful accounts of $2,326,716
     in 1998 and $968,295 in 1997                      18,735,984     12,604,687

   Income taxes receivable                                282,229        508,704
   Inventories                                          1,798,481      2,203,471
   Real estate available-for-sale (note 1)              3,515,000      3,515,000
   Prepaid expenses and other current assets            2,504,768      2,279,619
   Deferred income taxes (note 5)                       3,972,575      3,299,387
                                                       ---------      ---------
     Total current assets                              40,986,777     43,900,178
                                                       ----------     ----------

Property, plant, and equipment:
   Land                                                 2,379,334      2,379,334
   Laboratory equipment                                18,101,286     19,044,329
   Data processing equipment and software              18,878,942     17,130,254
   Office and transportation equipment                  5,787,762      4,909,970
   Leasehold improvements                                 700,842        492,684
   Construction in progress                            27,067,631           --
                                                       ----------      ---------
                                                       72,915,797     43,956,571

Less accumulated depreciation                          35,983,169     33,515,280
                                                       ----------     ----------

   Net property, plant, and equipment                  36,932,628     10,441,291
                                                       ----------     ----------

Other assets:
   Intangible assets, net of accumulated
     amortization (note 2)                              8,469,322      5,229,708
   Bond issue costs, net of accumulated
     amortization of $5,823                               186,324           -- 
   Deferred income taxes-noncurrent (note 5)                 --          321,799
   Deposits and miscellaneous                             206,127         80,497
                                                          -------         ------

          Total assets                                $86,781,178    $59,973,473
                                                       ==========     ==========
See accompanying notes to consolidated financial statements.




                                      F-3

<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                           Consolidated Balance Sheets
                           December 31, 1998 and 1997


Liabilities and Stockholders' Equity                       1998            1997
- ------------------------------------                       ----            ----
Current liabilities:
     Accounts payable                              $  4,353,733         336,451
     Retainage and construction accounts
      payable                                         3,809,193            --
     Accrued payroll and benefits                     4,148,593       4,530,235
     Other accrued expenses                             610,315         423,396
     Other current liabilities                          274,198         194,148
     Current portion of long-term
       debt (note 4)                                  1,860,168            --
                                                      ---------        --------

          Total current liabilities                  15,056,200       8,474,230

Deferred income taxes (note 5)                          446,745            --
Long-term debt (note 4)                              18,097,308            --
                                                     ----------       ---------
          Total liabilities                          33,600,253       8,474,230
                                                     ----------       ---------
Stockholders' equity:
     Preferred stock, $0.01 par value per
       share; 1,000,000 shares authorized,
       none issued
     Common  stock, $0.01 par value per
       share; 40,000,000 shares authorized,
       15,000,000 shares issued (note 7)                150,000         150,000
     Additional paid-in capital                      14,099,066      13,723,250
     Accumulated other comprehensive income            (849,098)       (666,927)
     Retained earnings                               59,988,073      60,259,272
                                                     ----------      ----------
                                                     73,388,041      73,465,595
Less treasury stock of 1,688,550 shares
  in 1998 and 1,874,706 shares in 1997,
  at cost                                            20,207,116      21,966,352
                                                     ----------      ----------
     Total stockholders' equity                      53,180,925      51,499,243
                                                     ----------      ----------
     Commitments and Contingencies                   
                                                     ----------      ----------
     Total liabilities and
       stockholders' equity                        $ 86,781,178    $ 59,973,473
                                                   ============    ============








                                      F-4
<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                       Consolidated Statements of Earnings
                  Years ended December 31, 1998, 1997 and 1996

<TABLE>
<CAPTION>
                                            1998             1997             1996
                                            ----             ----             ----
<S>                              <C>               <C>              <C> 
Sales                              $ 102,227,216       78,926,119       59,431,855
Cost of sales                         56,719,603       42,017,179       32,716,833
                                     -----------       ----------       ---------- 
     Gross profit                     45,507,613       36,908,940       26,715,022

Selling, general, and
  administrative expenses             31,028,323       27,706,822       23,622,545

Provision for loss on disposal
  of assets                                 --          6,553,279             --
                                     -----------       ----------       ----------
     Earnings from operations         14,479,290        2,648,839        3,092,477
                                     -----------       ----------       ----------
Other income (expenses):
     Investment income                   814,343        1,179,947        1,769,182
     Other, net                         (112,277)         (58,245)          14,930
                                     -----------       ----------       ---------- 
          Total other income,
            net                          702,066        1,121,702        1,784,112
                                     -----------       ----------       ----------
          Earnings before
            income taxes              15,181,356        3,770,541        4,876,589
                                     -----------       ----------       ----------
Income taxes (benefit) (note 5):
     Current                           6,057,345        4,392,742        2,485,473
     Deferred                            (95,356)      (2,824,296)        (476,783)
                                     -----------       ----------        ---------
     Total income taxes                5,961,989        1,568,446        2,008,690
                                     -----------       ----------        ---------
     Net earnings                  $   9,219,367        2,202,095        2,867,899
                                   =============       ==========        =========
Basic earnings per share           $        0.70             0.17             0.22
                                   =============       ==========        =========
Diluted earnings per share         $        0.69             0.17             0.22
                                   =============       ==========        =========
</TABLE>
See accompanying notes to consolidated financial statements.









                                      F-5



<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
               Consolidated Statements of Changes in Stockholders'
               Equity Years ended December 31, 1998, 1997 and 1996
<TABLE>
<CAPTION>
                                                          Accumulated
                                                             other
                                                         comprehensive
                                                           income--
                                             Additional     foreign                                                Total
                                    Common     paid-in      currency     Retained    Treasury    Comprehensive  stockholders'
                                     stock     capital     translation   earnings      stock       income         equity
                                     -----     -------     -----------   --------      -----       ------         ------
<S>                           <C>          <C>           <C>         <C>         <C>            <C>         <C>       
Balance at December 31, 1995     $   150,000  13,377,728    (545,818)   74,040,870  (22,158,451)               64,864,329
Comprehensive income:
     Net earnings                       --          --          --       2,867,899         --     2,867,899     2,867,899
     Adjustment from foreign
      currency translation              --          --         1,859          --           --         1,859         1,859
                                                                                                   --------
          Comprehensive income                                                                    2,869,758
                                                                                                  =========
Cash dividends ($.72 per share)         --          --          --      (9,414,332)        --                  (9,414,332)
Net issuance of 30,149 shares
  of treasury stock                     --       168,393        --            --        (38,855)                  129,538
                                 -----------     -------    ---------   ----------      -------               -----------
Balance at December 31, 1996     $   150,000  13,546,121    (543,959)   67,494,437  (22,197,306)               58,449,293
Comprehensive income:
     Net earnings                       --          --          --       2,202,095         --     2,202,095     2,202,095
     Adjustment from foreign
      currency translation              --          --      (122,968)         --           --      (122,968)     (122,968)
                                                                                                  ----------
          Comprehensive income                                                                    2,079,127
                                                                                                  ==========
Cash dividends ($.72 per
  share)                                --          --          --      (9,437,260)        --                  (9,437,260)
Net issuance of 41,129 shares
  of treasury stock                     --       177,129        --            --        230,954                   408,083
                                 -----------     -------    ---------   ----------      -------               -----------
Balance at December 31, 1997         150,000  13,723,250    (666,927)   60,259,272  (31,966,352)               51,499,243
Comprehensive income:
     Net earnings                       --          --          --       9,219,367         --     9,219,367     9,219,367
     Adjustment from foreign
      currency translation              --          --      (182,171)         --           --      (182,171)     (182,171)
                                                                                                 -----------
          Comprehensive income                                                                    9,037,196
                                                                                                 ===========
Cash dividends ($.72 per share)         --          --          --      (9,490,566)        --                  (9,490,566)
     Issuance of 168,885 shares
       of treasury stock related
       to acquisition                   --       275,050        --            --      1,724,950                 2,000,000
                                 -----------     -------    ---------   ----------      -------               -----------
Net Issuance of 17,271 shares
  of treasury stock                     --       100,766        --            --         34,286                   135,052
Balance at December 31, 1998     $   150,000  14,099,066    (849,098)   59,988,073  (20,207,116)               53,180,925
                                 ===========  ==========    =========   ==========  ===========               ===========
</TABLE>
See accompanying notes to consolidated financial statements 
                                      F-6
<PAGE>
<TABLE>
<CAPTION>
                         LABONE, INC. AND SUBSIDIARIES
                      Consolidated Statements of Cash Flows
                  Years ended December 31, 1998, 1997 and 1996
                                                         1998            1997            1996
                                                         ----            ----            ----
<S>                                           <C>               <C>              <C> 
Cash provided by (used for) operations:
   Net earnings                                  $  9,219,367       2,202,095       2,867,899
   Adjustments to reconcile net earnings
     to net cash provided  by operations,
     net of acquisitions:
      Depreciation and intangibles amortization     4,168,638       4,770,415       4,014,304
      Amortization of investment premiums             (36,767)       (251,233)       (103,146)
      Deferred income taxes                           (96,263)     (2,832,976)       (476,783)
      (Gain) loss on disposal of equipment            (18,606)       (120,087)        155,587
      Provision for loss on disposal of assets           --         6,553,279            --
      Directors' stock compensation                    62,619          66,834          62,096
      Changes in:
         Accounts receivable                       (5,274,751)     (3,005,980)     (1,871,421)
         Income tax receivable                        226,475        (271,331)           --
         Inventories                                  404,990        (755,422)        173,093
         Prepaid expenses and other current
           assets                                    (201,551)       (442,454)        808,589
         Accounts payable                             886,932         355,075         863,000
         Income taxes payable                            --              --           (50,560)
         Accrued payroll and benefits                (619,281)      1,727,669         830,091
         Other accrued expenses                       186,919          29,585        (508,486)
         Other current liabilities                     80,050          68,019         (23,668)
                                                       ------          ------         ------- 
           Net cash provided by operations          8,988,771       8,093,488       6,740,595
                                                    ---------       ---------       ---------
Cash provided by (used for) investment
  activities:
   Purchase of investments held-to-
     maturity                                      (5,461,090)    (15,893,902)    (15,752,895)
   Proceeds from maturities of
     investments held-to-maturity                   6,701,893      18,155,062      23,394,571
   Property, plant, and equipment
     additions, net                               (25,485,294)     (6,676,615)     (3,225,956)
   Acquisition of businesses (note 2)              (2,967,883)     (4,815,889)           --
   Deposits and miscellaneous                          (5,147)        (57,295)         17,559
                                                       ------         -------          ------
      Net cash provided by (used for)
        investment activities                     (27,217,521)     (9,288,639)      4,433,279
                                                  -----------      ----------       ---------












<PAGE>
Cash provided by (used for) financing
 activities:
   Issuance of treasury stock, net of
     proceeds from exercise of
     stock options                                     72,433         341,249          67,442
   Proceeds from bond issue                        19,900,000            --              --
   Bond issue costs                                  (192,147)           --              --
   Payments on long-term debt                          (1,937)           --              --
   Cash dividends                                  (9,490,566)     (9,437,260)     (9,414,332)
                                                   ----------      ----------      ---------- 
      Net cash provided by (used
        for) financing activities                  10,287,783      (9,096,011)     (9,346,890)
                                                   ----------      ----------      ---------- 

Effect of foreign currency
  translation on cash                                (165,965)        (71,544)         11,976
                                                     --------         -------          ------
      Net increase (decrease) in
        cash and cash equivalents                  (8,106,932)    (10,362,706)      1,838,960
Cash and cash equivalents at
 beginning of year                                 18,284,672      28,647,378      26,808,419
                                                   ----------      ----------      ----------
Cash and cash equivalents at
 end of year                                     $ 10,177,740      18,284,672      28,647,379
                                                 ============      ==========      ==========
</TABLE>
































                                      F-7
<PAGE>
                         LABONE, INC. AND SUBSIDIARIES
               Consolidated Statements of Cash Flows (continued)
                  Years ended December 31, 1998, 1997 and 1996
<TABLE>
<CAPTION>
                                                         1998            1997            1996
                                                         ----            ----            ----
<S>                                          <C>                <C>             <C> 
Supplemental disclosures of cash flow information:
   Cash paid during the year for:
      Income taxes                              $   6,458,641       4,586,078       2,251,320
                                                =============       =========       =========
      Interest                                  $     240,586           --             --
                                                =============       =========       =========

Supplemental schedule of noncash investing and
  financing activities for the year ended
  December 31, 1998:
   Details of acquisition:
      Fair value of assets acquired             $   6,223,162
      Liabilities assumed                            (645,198)
      Stock issued                                 (2,000,000)
                                                -------------

      Cash paid                                     3,577,964

Less: cash acquired                                   610,081
                                                -------------

      Net cash paid for acquisition            $    2,967,883
                                                =============
</TABLE>
See accompanying notes to consolidated financial statements.























                                      F-8


<PAGE>
                         LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

(1) Summary of Significant Accounting Policies

    Principles of Consolidation and Basis of Presentation

    The accompanying  consolidated  financial statements include the accounts of
    LabOne, Inc. (LabOne or the Company), and its wholly-owned subsidiaries, Lab
    One Canada Inc. and  Systematic  Business  Services,  Inc.  All  significant
    intercompany transactions have been eliminated in consolidation.  LabOne was
    80.5%-owned by Holdings, Inc. (Holdings) at December 31, 1998.

    Cash and Cash Equivalents

    Cash and cash  equivalents  include  demand  deposits  in banks,  marketable
    securities  with original  maturities of three months or less,  money market
    investments  and  overnight  investments  that are  stated  at  cost,  which
    approximates market value.

    Investment Securities

    LabOne  determines  the  appropriate   classification  of  debt  and  equity
    securities  at the time of  purchase.  Debt  securities  are  classified  as
    held-to-maturity  when  LabOne  has the  intent  and  ability  to  hold  the
    securities to maturity.  Held-to-maturity securities are stated at amortized
    cost and investment income is included in earnings.

        Inventories

    Inventories  consist  of  completed  specimen  collection  kits and  various
    materials  used in the  assembly  of  specimen  collection  kits for sale to
    clients.  Inventory is valued at the lower of cost (first-in,  first out) or
    market.

    Property, Plant, and Equipment

    Property, plant, and equipment additions are recorded at cost which includes
    interest capitalized during construction,  when material.  Facilities leased
    pursuant  to  revenue  bond  financing  transactions  are  accounted  for as
    purchases with the cost of the leased property included in property,  plant,
    and equipment and the related obligation included in long-term debt.

    Depreciation and amortization  are computed using the  straight-line  method
    over the estimated useful lives of the assets as follows:

               Buildings                            30 years
               Laboratory equipment              3 - 5 years
               Data processing equipment         3 - 5 years
               Office equipment                      5 years

    Cost of Borrowings

    Expenses directly related to the issuance of debt are deferred and amortized
    over the period the debt is expected to be  outstanding  using the  interest
    method.

                                      F-9
<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

Intangible Assets

Intangible  assets are recorded at their  acquisition cost, net of amortization.
The  patent  process  utilized  in coating  the plates on which  blood and urine
testing is performed  was amortized on a  straightline  basis over the estimated
life of the patent (184 months at date of acquisition).  The excess of cost over
fair value of net assets  acquired is being  amortized on a straight  line basis
over periods of fifteen to twenty years.

Impairment of Long-lived Assets

When facts and circumstances indicate potential impairment, LabOne evaluates the
recoverability of carrying values of long-lived assets,  including  intangibles,
using  estimates of  undiscounted  future cash flows over remaining asset lives.
When  impairment is indicated,  any impairment loss is measured by the excess of
carrying  values over fair  values.  During the fourth  quarter of 1997,  LabOne
decided to dispose of its office and  headquarters  building  and lab  facility,
which,  net of  accumulated  depreciation,  has been  classified  as real estate
available-for-sale  (note 9). An impairment  loss of  $6,553,279  related to the
anticipated  sale was  recorded  in 1997 which  reduced  the  carrying  value to
$3,515,000. At December 31, 1998, the Company has entered into real estate sales
contracts to sell all real estate available-for-sale for $4,530,000.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial  statements in conformity  with generally  accepted
accounting principles requires management to make estimates and assumptions that
affect  the  reported  amounts  of assets  and  liabilities  and  disclosure  of
contingent  assets and  liabilities at the date of the financial  statements and
the  reported  amounts of revenues  and expenses  during the  reporting  period.
Actual results could differ from those estimates.

Fair Value of Financial Instruments

Estimates of fair values are subjective in nature and involve  uncertainties and
matters of  significant  judgment  and,  therefore,  cannot be  determined  with
precision.  Changes in assumptions  could affect the estimates.  The fair market
value  of  LabOne's  financial   instruments  at  December  31,  1998  and  1997
approximates their carrying values.

Income Taxes

Deferred  tax  assets  and   liabilities  are  recognized  for  the  future  tax
consequences   attributable  to  differences  between  the  financial  statement
carrying  amounts of existing assets and  liabilities  and their  respective tax
bases.  Deferred tax assets and liabilities are measured using enacted tax rates
expected  to apply to  taxable  income  in the  years in which  those  temporary
differences are expected to be recovered or settled.  The effect on deferred tax
assets and  liabilities  of a change in tax rates is recognized in income in the
period that includes the enactment date.



                                      F-10

<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

Earnings Per Share

Basic earnings per share is computed using the weighted average number of common
shares and diluted  earnings per share is computed  using the  weighted  average
number of common shares and dilutive stock options.

The following  table  reconciles the weighted  average common shares used in the
basic earnings per share  calculation and the weighted average common shares and
common share equivalents used in the diluted per share calculation:

<TABLE>
<CAPTION>
                                        1998         1997         1996
                                        ----         ----         ----
<S>                             <C>         <C>          <C>                                         
Weighted average common shares
  (basic)                         13,168,394   13,106,383   13,076,103
Employee stock options               135,174      215,655      190,013
                                     -------      -------      -------

Weighted average common shares
  and common shares equivalents
  (diluted)                       13,303,568   13,322,038   13,266,116
                                  ==========   ==========   ==========

</TABLE>
Financial Statement Presentation

In June 1997, the Financial  Accounting  Standards Board (FASB) issued Statement
of  Financial  Accounting  Standards  (SFAS) No.  130,  Reporting  Comprehensive
Income,  which established  standards for reporting and display of comprehensive
income and its  components.  SFAS No. 130  became  effective  for the year ended
December  31, 1998.  The  presentation  of previous  periods has been changed to
reflect the provisions of this statement.

In June 1997,  the FASB issued SFAS No. 131,  Disclosures  About  Segments of an
Enterprise and Related  Information,  which established  standards for reporting
operating  segments.  SFAS No. 131 became  effective for the year ended December
31, 1998. This statement did not affect the presentation of segment information.

In  June  1998,  the  FASB  issued  SFAS  No.  133,  Accounting  for  Derivative
Instruments  and Hedging  Activities,  effective  for  LabOne's  quarter  ending
September 30, 1999.  Retroactive  application will not be required.  The Company
does not expect this  statement to have a  significant  impact on the  Company's
financial position or results of operations.









                                     F-11
<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

(2)  Acquisitions and Intangible Assets

     The cost and accumulated  amortization of intangible assets at December 31,
     1998 and 1997 are as follows:

                                             1998          1997
                                             ----          ----
      Patent                          $ 8,000,000     8,000,000
      Accumulated amortization          8,000,000     7,782,574
                                        ---------     ---------
                                             --         217,426
                                        ---------     ---------
      Excess of cost over fair
        value of net assets
        acquired                       12,587,993     8,598,959
      Accumulated amortization          4,118,671     3,586,677
                                        ---------     ---------
                                        8,469,322     5,012,282
                                        ---------     ---------
         Intangible assets, net of
           accumulated amortization   $ 8,469,322     5,229,708
                                       ==========     =========

     Effective  October  30,  1998,  LabOne  acquired a company  which  provides
     information  support services to insurance  underwriters for  approximately
     $5.7  million.  The purchase was  comprised of $3.7 million of cash and the
     issuance of 168,885 shares of LabOne stock having a fair market value of $2
     million.  The  acquisition  was accounted for using the purchase  method of
     accounting.  The  purchase  price could  increase if the  acquired  company
     achieves  certain  levels of earnings  in 1999 and 2000.  The excess of the
     aggregate  purchase price over the fair market value of net assets acquired
     of approximately $4 million is being amortized over twenty years.

     The  operating  results of the acquired  company have been  included in the
     consolidated  statements  of  earnings  from the date of  acquisition.  The
     following  unaudited  pro forma  consolidated  results of operations of the
     Company  for the  years  ended  December  31,  1998  and 1997  assumes  the
     acquisition occurred as of January 1, 1997:

                                       1998            1997
                                       ----            ----
      Sales                 $   108,239,000      85,032,000
      Net earnings                9,869,000       2,434,000
      Earnings per share:
         Basic                         0.74            0.18
         Diluted                       0.73            0.18

     Pro forma data does not purport to be  indicative of the results that would
     have been obtained had these events  actually  occurred at the beginning of
     the periods  presented  and is not  intended to be a  projection  of future
     results.


                                      F-12

<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

     Effective  January 30, 1997,  LabOne  acquired  certain  assets,  including
     customer  lists,  of GIB  Laboratories,  Inc., a subsidiary  of  Prudential
     Insurance Company of America,  for $4,815,889.  Concurrently,  Prudential's
     Individual  Insurance Group agreed to use LabOne as its exclusive  provider
     of risk assessment  testing  services.  The excess costs over fair value of
     GIB  Laboratories,  Inc.  assets  acquired  was  $4,128,275  and  is  being
     amortized over fifteen years.

(3)  Investment Securities

     LabOne held no  investment  securities  at December  31, 1998. A summary of
     investment  securities  information  relating to quoted  market  values and
     unrealized holding gains and losses at December 31, 1997 is as follows:
<TABLE>
<CAPTION>
                                                                 Amount at
                                                                   which
                                                                 carried in    Unrealized   Unrealized
                                     Amortized    Approximate    the balance    holding      holding
         1997                           cost         market        sheet          gains       losses
         ----                           ----         ------        -----          -----       ------
<S>                               <C>            <C>            <C>           <C>          <C>
Held-to-maturity
  investments, all
  with maturities
  less than one year:
   Canadian government notes         $  702,495      702,495       702,495                       --
   Obligations of states and
    political subdivisions              502,143      501,541       502,143         --            602
                                        -------      -------       -------     --------      -------
      Total short-term investments   $1,204,638    1,204,036     1,204,638         --            602
                                     ==========    =========     =========     ========      =======
</TABLE>
(4)  Long-term Debt
     Long-term debt consists of the following as of December 31, 1998:

     Taxable industrial revenue bonds, Series 1998A,
      principal payable annually through  September 1,
      2009,  interest payable monthly at a rate adjusted
      weekly based on short-term United States treasury
      obligations (5.14% at December 31, 1998),secured
      by the Company's  facility and an irrevocable bank
      letter of credit                                            $ 20,000,000
     Various capital leases, principal and interest payable
      monthly through May 2003, interest ranging from 7%
      to 12%, collateralized by office equipment                        54,446
                                                                   -----------
         Total long-term debt                                       20,054,446
      Less:
         Current portion                                             1,860,168
         Unamortized discount                                           96,970
                                                                   -----------
            Long-term debt, net                                   $ 18,097,308
                                                                   ===========
                                      F-13
<PAGE>
                         LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

     Aggregate  maturities  of  long-term  debt as of  December  31, 1998 are as
     follows:

                      Bonds payable  Capital leases      Total
         1999        $ 1,850,000        10,168        1,860,168
         2000          1,850,000        13,551        1,863,551
         2001          1,850,000        14,933        1,864,933
         2002          1,850,000        11,188        1,861,188
         2003          1,800,000         4,606        1,804,606
   Thereafter         10,800,000          --         10,800,000
                     -----------        ------       ----------
                     $20,000,000        54,446       20,054,446
                     ===========        ======       ==========

     Interest expense in 1998 amounted to approximately $70,000, net of interest
     capitalized as a component of property, plant, and equipment of $314,638.

(5)  Income Taxes

     The components of income taxes and deferred taxes  (benefit)  applicable to
     temporary differences are as follows (for the years ended December 31):

                                 1998           1997           1996
                                ----           ----           ----
   Current:
      Federal             $ 4,853,744      3,452,979      1,878,022
      State                 1,086,479        633,839        347,809
      Foreign                 117,122        305,924        259,642
                            ---------      ---------      ---------
         Total current      6,057,345      4,392,742      2,485,473
                            ---------      ---------      ---------

   Deferred:
      Federal                 (89,408)    (2,339,175)      (490,408)
      State                   (31,125)      (487,993)      (118,293)
      Foreign                  25,177          2,872        131,918
                            ---------      ---------      ---------
         Total deferred       (95,356)    (2,824,296)      (476,783)
                            ---------      ---------      ---------
                          $ 5,961,989      1,568,446      2,008,690
                          ===========      =========      =========













                                      F-14
<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996
Total  income  taxes  differ from the amounts  computed by applying  the federal
statutory  income  tax  rate of 34% to  earnings  before  income  taxes  for the
following reasons (for the years ended December 31):

                                     1998           1997           1996
                                     ----           ----           ----
Application of statutory
   income tax rate            $ 5,161,661      1,281,984      1,658,040
Foreign taxes, net                  7,599         72,062        113,803
State income taxes, net           696,534         99,649        151,481
Tax-exempt interest                (5,788)       (18,730)       (44,708)
Other, net                        101,983        133,481        130,074
                                  -------        -------        -------
                              $ 5,961,989      1,568,446      2,008,690
                              ===========      =========      =========
The tax effects of temporary differences that create significant portions of the
deferred tax assets and deferred tax  liabilities  at December 31, 1998 and 1997
are presented below:
<TABLE>
<CAPTION>
                                                              1998           1997
                                                              ----           ----
<S>                                                 <C>            <C> 
Deferred current income tax assets (liabilities):
   Unrealized loss on real estate available-for-sale   $ 2,541,126      2,606,698
   Accrued vacation                                        303,180        253,832
   Accrued medical claims                                   63,644         79,554
   Bad debts                                               925,635        384,600
   Inventory adjustment                                     40,830         26,673
   Other items                                              98,160        (51,970)
                                                            ------        ------- 
      Total deferred current income tax
        assets, net                                    $ 3,972,575      3,299,387
                                                       ===========      =========
Deferred noncurrent tax assets (liabilities):
   Depreciation and amortization                       $    12,878        321,799
   Acquired subsidiary cash to accrual adjustment         (196,438)          --
   Other items                                            (263,185)          --
                                                          --------      ---------
      Total deferred noncurrent tax assets
        (liabilities), net                             $  (446,745)       321,799
                                                       ===========        =======
</TABLE>
A valuation  allowance for deferred tax assets was not necessary at December 31,
1998 or 1997.

In conjunction with building its new facility, LabOne has applied for the Kansas
High Performance  Incentive  Program (HPIP) credit.  If LabOne qualifies for the
program  as  certified  by the state of  Kansas,  LabOne  will  receive a credit
available  to offset all or a portion of its 1999  Kansas  income tax  liability
related to operations of the new facility.  Any unused portion of the credit can
be carried forward for a period of ten years,  provided LabOne continues to meet
requirements of the program.  HPIP credits which may be available to LabOne over
the next ten years are estimated to aggregate approximately $4,000,000.

                                      F-15
<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

(6)  Benefit Plans

     LabOne  maintains a money purchase  pension plan for all employees who have
     completed  one-half  year of  service  and have  attained  age  twenty  and
     one-half years. The plan is a defined  contribution plan under which LabOne
     contributes a percentage of a participant's annual  compensation.  LabOne's
     contributions  to the plan were  $1,803,000,  $1,422,000 and $1,187,000 for
     the years ended December 31, 1998, 1997 and 1996, respectively.

     LabOne has a profit  sharing plan for all employees who have  completed six
     months of service and a minimum of 500 hours of service  and have  attained
     the age of twenty and one-half years.  LabOne contributes on behalf of each
     participant   an  amount   equal  to  50%  of  the   participant's   annual
     contributions,  but  not  in  excess  of 5%  of  the  participant's  annual
     compensation.  LabOne  contributions  are invested in LabOne  common stock.
     LabOne's  contributions  to the plan for the years ended December 31, 1998,
     1997 and 1996 were $663,000, $558,000 and $509,000, respectively.

(7)  Stock Options and Warrants

     LabOne has a long-term  incentive plan which provides for granting  awards,
     including  stock  options,  for not more  than  3,150,000  shares of LabOne
     common  stock.  LabOne has granted  certain stock options which entitle the
     grantee to purchase  shares for a price  equal to the fair market  value at
     date of grant with option periods up to ten years.

     The Company accounts for stock options in accordance with the provisions of
     Accounting  Principles Board Opinion No. 25, Accounting for Stock Issued to
     Employees,  and related  interpretations  (APB 25).  As such,  compensation
     expense is recorded on the date of grant only if the current  market  price
     of the underlying  stock exceeds the exercise  price. On December 31, 1995,
     the Company adopted  Statement of Financial  Accounting  Standards No. 123,
     Accounting for Stock Based Compensation,  (SFAS 123) which permits entities
     to  recognize  as  expense  over the  vesting  period the fair value of all
     stock-based  awards  on the date of  grant.  Alternately,  SFAS 123  allows
     entities  to  continue  to apply the  provisions  of APB 25 and provide pro
     forma  net  earnings  and pro forma  earnings  per  share  disclosures  for
     employee  stock option grants made in 1995 and  subsequent  years as if the
     fair-value-based  method defined in SFAS 123 had been applied.  The Company
     has elected to continue to apply the  provisions  of APB 25 and provide the
     pro forma disclosure provisions of SFAS 123.












                                      F-16

<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

A summary of the status of the  Company's  stock  option plan as of December 31,
1998, 1997 and 1996 and changes during the years then ended is presented below:
<TABLE>
<CAPTION>
                                              1998                  1997                     1996
                                    ----------------------------------------------------------------------
                                                 Weighted                 Weighted                Weighted
                                                  average                  average                 average
                                     Number       exercise   Number       exercise   Number        exercise
                                    of shares      price    of shares       price   of shares       price
                                    ---------      -----    ---------       -----   ---------       -----
<S>                              <C>          <C>        <C>          <C>        <C>          <C>      
Outstanding at beginning of year    1,614,068    $  14.30   1,459,559    $  13.63   1,572,167    $   13.07
Granted                               330,859       15.02     253,316       17.36     314,297        16.39
Exercised                             (40,300)      10.64     (71,907)      10.84    (120,305)       10.67
Forfeited                             (66,700)      17.87     (26,900)      15.95    (306,600)       14.74
                                      -------       -----     -------       -----    --------        -----
Outstanding at end of year          1,837,927        14.38  1,614,068       14.30   1,459,559        13.63
                                    =========        =====  =========       =====   =========        =====
Options exercisable at year-end       968,683        13.44    820,609       12.94     718,705        12.21
                                    =========        =====  =========       =====   =========        =====
</TABLE>
The following table summarizes  information  about stock options at December 31,
1998.
<TABLE>
<CAPTION>
                              Options outstanding                     Options exercisable
                     --------------------------------------       -------------------------
                                    Weighted
                                     average       Weighted                       Weighted
                                   remaining        average                       average
    Range of          Number       contractual     exercise           Number      exercise
 exercise prices   outstanding     life (years)      price          exercisable     price
 ---------------   -----------     ------------      -----          -----------     -----
<S>              <C>                <C>           <C>              <C>         <C>   
$ 9.88- 9.88         188,583           2.0            9.88            188,583     $  9.88
 11.13-11.63         420,513           5.2           11.44            313,513       11.38
 13.38-14.13         154,397           6.3           13.93             85,618       13.95
 14.38-14.38         205,859           6.7           14.38            120,000       14.38
 14.75-15.22         241,000           9.3           15.04             24,000       14.75
 15.50-16.63         305,885           7.9           16.42            117,877       16.44
 16.69-23.88         321,690           7.4           18.65            119,092       19.96
                   ---------                                          ------- 
$ 9.88-23.88       1,837,927           6.5           14.38            968,683       13.44
============       =========           ===           =====            =======       =====
</TABLE>







<PAGE>

The weighted  average per share fair value of stock options granted during 1998,
1997 and 1996 was  $3.54,  $5.08 and $4.77,  respectively,  on the date of grant
using the Black Scholes option-pricing model with the following weighted average
assumptions:  1998 expected dividend yield of 4.8%,  risk-free  interest rate of
5.0%,  expected  volatility  factor of 33.9% and an expected  life of six years;
1997 expected dividend yield of 4.2%,  risk-free interest rate of 6.3%, expected
volatility  factor of 35.4% and an  expected  life of six years;  1996  expected
dividend yield of 4.4%,  risk-free  interest rate of 6.0%,  expected  volatility
factor of 36.6% and an expected life of six years.













































                                      F-17

<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

     Since  the  Company  applies  APB  25  in  accounting  for  its  plans,  no
     compensation  cost  has  been  recognized  for  its  stock  options  in the
     financial  statements.  Had the Company recorded compensation cost based on
     the fair value of options at the grant date the  Company's net earnings and
     earnings per share would have been reduced by approximately  the following:
     $515,000, or $.04 per share, in 1998; $416,000, or $.03 per share, in 1997;
     and $199,000, or $.02 per share, in 1996.

     Pro forma net earnings reflect only options granted in 1998, 1997 and 1996.
     Therefore,  the full  impact  of  calculating  compensation  cost for stock
     options  under  SFAS 123 is not  reflected  in the pro forma  net  earnings
     amounts presented above because  compensation  costs are reflected over the
     options' vesting period of five years for the 1998, 1997, and 1996 options.
     Compensation  cost for  options  granted  prior to  January  1, 1995 is not
     considered.

     LabOne  entered  marketing  agreements  with two companies  during 1998. In
     conjunction with these agreements, LabOne granted warrants for the purchase
     of 1,000,000  shares of common stock at an exercise price equal to the fair
     value of the stock at the grant date (500,000  shares at $17.00 and 500,000
     shares at  $15.44).  A portion  of the  warrants  become  exercisable  each
     quarter  for five  years  provided  certain  conditions  are met  including
     achievement  of certain levels of revenues.  LabOne has reserved  1,000,000
     shares of  common  stock  for  issuance  of  shares  upon  exercise  of the
     warrants.

(8)  Foreign Operations

     The following  summarizes financial  information for LabOne's  wholly-owned
     Canadian subsidiary, Lab One Canada Inc., for the years ended December 31:

                              1998          1997         1996 
                              ----          ----         ---- 
      Revenues             $6,462,814    6,564,786    6,379,505
      Operating earnings      314,112      644,842      718,567
      Total assets          2,841,854    3,192,854    2,668,434
                            =========    =========    =========
(9)  Business Segment Information

     The Company  operates  principally  in three lines of business:  insurance,
     clinical  testing,  and substance  abuse  testing.  The  insurance  line of
     business  involves   risk-appraisal   laboratory  testing  and  information
     services to the insurance  industry.  The tests  performed and  information
     provided by the Company are  specifically  designed to assist an  insurance
     company in  objectively  evaluating  the risks posed by policy  applicants.
     Clinical  testing  services are provided to the health care industry to aid
     in the  diagnosis  and  treatment  of  patients.  Substance  abuse  testing
     services are provided to both  regulated  and  nonregulated  employers  who
     employ drug screening guidelines.






<PAGE>

     Operating  income (loss) of each line of business is computed as sales less
     identifiable and allocated  expenses.  In computing operating income (loss)
     of lines of  business,  none of the  following  items  have  been  added or
     deducted:  general  corporate  expenses,  investment income or other income
     (expenses).  Identifiable  assets by line of business are those assets that
     are used in the  Company's  operations  in each line of  business.  General
     corporate assets are principally cash and investment securities.















































                                      F-18



<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

    Following is a summary of line of business information as of and for the
years ended December 31, 1998, 1997, and 1996:

<TABLE>
<CAPTION>
                                               1998             1997             1996      
                                               ----             ----             ----      
<S>                                   <C>                 <C>              <C>       
Sales:
  Insurance services                     $  69,149,050       61,997,817       50,800,650
  Clinical services                         18,599,583        7,511,889        3,941,704
  Substance abuse testing                   14,478,583        9,416,413        4,689,501
                                         -------------       ----------       ----------
      Total sales                        $ 102,227,216       78,926,119       59,431,855
                                         =============       ==========       ==========
  Operating income (loss):
    Insurance services                   $  20,630,337       18,507,849       12,610,224
    Clinical services                       (6,187,744)      (8,303,741)      (7,967,348)
    Substance abuse testing                    203,828         (933,832)      (1,235,982)
  General corporate expenses                  (167,131)        (188,245)        (158,830)
  Investment income                            814,343        1,179,947        1,769,182
  Other expense, net                          (112,277)      (6,491,437)        (140,657)
                                         -------------       ----------        ---------
      Earnings before income taxes          15,181,356        3,770,541        4,876,589

  Income tax expense                         5,961,989        1,568,446        2,008,690
                                         -------------       ----------        ---------
      Net earnings                       $   9,219,367        2,202,095        2,867,899
                                         =============       ==========        =========
  Identifiable assets:
    Insurance services                   $  29,295,799       25,020,052       24,327,970
    Clinical services                        5,492,624        3,512,587        4,022,258
    Substance abuse testing                  6,448,663        4,994,104        3,323,245
    General corporate assets                45,544,092       26,446,730       33,069,702
                                         -------------       ----------       ----------
      Total assets                       $  86,781,178       59,973,473       64,743,175
                                         =============       ==========       ==========
  Capital expenditures:
    Insurance services                   $   2,089,869        3,308,320        2,558,275
    Clinical services                          501,380          468,538          162,814
    Substance abuse testing                    423,664          946,268          504,867
    General corporate                       22,470,381        2,553,218             --   
                                         =============       ==========        =========
  Depreciation and amortization:
    Insurance services                   $   2,560,962        3,185,661        2,504,472
    Clinical services                          797,385          940,223        1,141,210
    Substance abuse testing                    810,291          644,531          368,622
                                         =============       ==========        =========
</TABLE>





                                      F-19
<PAGE>
                          LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

(10) Quarterly Financial Data (Unaudited)

     A summary of unaudited quarterly results of operations for 1998 and 1997 is
     as follows (in thousands except per share data):

<TABLE>
<CAPTION>
                                                     Three months ended,
                                    -------------------------------------------------
<S>                               <C>          <C>        <C>         <C>
                                     March 31      June 30  September 30  December 31
1998:
  Sales                               $23,333      25,762      25,834     27,298
  Gross profit                         10,374      11,931      11,305     11,898
  Earnings before income taxes          3,297        4,234      3,630      4,020
  Basic earnings per share                .15          .19        .17        .19
  Diluted earnings per share              .15          .19        .17        .18
  Dividends per share                     .18          .18        .18        .18
                                       ======      =======     ======      =====
1997:
  Sales                               $17,740       20,307     19,728     21,151
  Gross profit                          8,290        9,671      9,064      9,884
  Earnings (loss) before income
     taxes                              2,287        2,853      2,603     (3,972)
  Net earnings (loss)                   1,359        1,687      1,536     (2,380)
  Basic earnings (loss) per share         .10          .13        .12       (.18)
  Diluted earnings (loss) per share       .10          .13        .12       (.18)
  Dividends per share                     .18          .18        .18        .18
                                       ======      =======     ======      =====
</TABLE>

(11) Commitments and Contingencies

     Tax Assessment

     The  Comptroller of the State of Texas has conducted an audit of LabOne for
     sales and use tax  compliance  for the years 1991 through 1997 and contends
     that LabOne's insurance laboratory services are taxable under the Texas tax
     code. The Texas  Comptroller has issued a tax audit  assessment,  including
     interest  and  penalties,  of  approximately  $1,900,000.  The  Company has
     appealed  this  assessment  arguing that its services do not fit within the
     definition of insurance  services  under the Texas code.  The assessment is
     under review by the Texas State Hearing Attorney. At this time, the Company
     is unable to estimate the possible liability,  if any, that may be incurred
     as a result of this assessment.







                                      F-20


<PAGE>
                         LABONE, INC. AND SUBSIDIARIES
                   Notes to Consolidated Financial Statements
                        December 31, 1998, 1997 and 1996

     Leases

     LabOne has several noncancelable  operating leases,  primarily for land and
     buildings,  and other  commitments  that expire  through 2003,  including a
     lease for office space from an entity owned by an employee.  Rental expense
     for  these  operating  leases  during  1998,  1997,  and 1996  amounted  to
     $538,000, $486,000, and $626,000, respectively.

     Future minimum lease payments and other  commitments under these agreements
     as of December 31, 1998 are:

                Year                    Amount  
                ----                    ------  
                1999                  $ 519,880
                2000                    346,912
                2001                    228,510
                2002                    195,192
                2003                    162,660
                                        =======
     Construction Costs

     Management  estimates cost to complete  construction of the new facility to
     house its headquarters and lab approximates $1,500,000.

(12) Subsequent Event - Merger Agreement

     On March 8, 1999,  LabOne and Holdings jointly  announced that the Board of
     Directors  of both  companies  have  approved an agreement to merge the two
     companies. Under the merger agreement, LabOne is to be merged into Holdings
     and the merged entity's name will be changed to LabOne,  Inc.  Stockholders
     of Holdings will have their Holdings  shares split  immediately  before the
     merger into 1.5 shares of the merged entity.  Stockholders of LabOne, other
     than  Holdings,  will be entitled  to elect to have each of their  existing
     LabOne  shares  exchanged  for one share of the merged  entity or $12.75 in
     cash or a combination  of cash and shares up to a limit of $16.6 million in
     cash (approximately 50% of eligible shares).  The combined company will use
     Holdings' existing cash and additional borrowings,  if necessary,  to cover
     the  purchase of shares  from  stockholders  that choose the cash  election
     option.  The merger is subject to approval by the holders of  two-thirds of
     the  outstanding  Holdings  shares  and a majority  of the shares  voted by
     LabOne  stockholders,  other than  Holdings and its  affiliates,  and other
     closing conditions.

                                      F-21
<PAGE>
                                                                    Appendix A













                          AGREEMENT AND PLAN OF MERGER,
                             as amended and restated

                                 BY AND BETWEEN

                               LAB HOLDINGS, INC.

                                       AND

                                  LabOne, INC.

                            DATED AS OF MARCH 7, 1999
































<PAGE>

                                TABLE OF CONTENTS

                                                                          Page

AGREEMENT AND PLAN OF MERGER.................................................1

CERTAIN DEFINITIONS..........................................................2

ARTICLE I....................................................................2

         THE MERGER
          ...................................................................2
                  1.1      The Merger; Effective Time of the Merger..........2
                  1.2      Closing...........................................3

ARTICLE II

         EFFECT OF THE MERGER
          ...................................................................3
                  2.1      Effects of the Merger.............................3
                           (a)      Surviving Corporation....................3
                           (b)      Articles of Incorporation................3
                           (c)      Bylaws...................................3
                           (d)      Directors and Officers...................3
                           (e)      Other....................................4
                  2.2      Effect of the Merger on Capital Stock.............4
                           (a)      LabOne Common Stock .....................4
                           (b)      Payment of Merger Consideration 
                                     for Cash Election Shares................6
                           (c)      LabOne shares held by Holdings
                                     and LabOne..............................9
                           (d)      Holdings Common Stock....................9
                           (e)      Assumption of LabOne Stock Options.......9
                           (f)      Adjustment of Holdings Stock Options....10
                           (g)      Stated Capital..........................10
                  2.3      Dissenting Shares................................11
                  2.4      No Liability.....................................11

ARTICLE III

         REPRESENTATIONS AND WARRANTIES.....................................11
                  3.1      Representations and Warranties of LabOne.........11
                           (a)      Organization, Standing and Power........11
                           (b)      Capital Structure.......................12
                           (c)      Non-Subsidiaries Equity Investment......13
                           (d)      Authority; No Violations; Consents 
                                     and Approvals..........................13
                           (e)      SEC Documents...........................15
                           (f)      Information Supplied....................16
                           (g)      Absence of Certain Changes or Events....16

                                        i
<PAGE>
 
                           (h)      No Undisclosed Material Liabilities.....17
                           (i)      Material Contracts; No Defaults.........17
                           (j)      Compliance with Applicable Laws.........18
                           (k)      Litigation..............................18
                           (l)      Taxes...................................18
                           (m)      Pension and Benefit Plans; ERISA........20
                           (n)      Labor Matters...........................23
                           (o)      Intangible Property.....................23
                           (p)      Environmental Matters...................24
                           (q)      Opinion of Financial Advisor............26
                           (r)      Vote Required...........................27
                           (s)      Insurance...............................27
                           (t)      Brokers.................................27
                           (u)      Title...................................27
                           (v)      Books and Records.......................27
                           (w)      Certain Payments........................28
                           (x)      Transactions with Related Parties.......28
                           (y)      State Takeover Laws.....................28
                           (z)      Nature of Election by Certain 
                                     Affiliates.............................28
                  3.2      Representations and Warranties of Holdings.......29
                           (a)      Organization, Standing and Power........29
                           (b)      Capital Structure.......................29
                           (c)      Non-Subsidiaries Equity Investment......30
                           (d)      Authority; No Violations; Consents 
                                     and Approvals..........................30
                           (e)      SEC Documents...........................32
                           (f)      Information Supplied....................33
                           (g)      Absence of Certain Changes or Events....33
                           (h)      No Undisclosed Material Liabilities.....34
                           (i)      Material Contracts; No Defaults.........34
                           (j)      Compliance with Applicable Laws.........35
                           (k)      Litigation..............................35
                           (l)      Taxes...................................36
                           (m)      Pension and Benefit Plans; ERISA........37
                           (n)      Labor Matters...........................39
                           (o)      Intangible Property.....................40
                           (p)      Environmental Matters...................41
                           (q)      Opinion of Financial Advisor............42
                           (r)      Vote Required...........................42
                           (s)      Insurance...............................42
                           (t)      Brokers.................................42
                           (u)      Title...................................43
                           (v)      Books and Records.......................43
                           (w)      Certain Payments........................43
                           (x)      Transactions with Related Parties.......43
                           (y)      State Takeover Laws.....................44
                           (z)      Nature of Election by Certain 
                                     Affiliates.............................44

                                       ii
<PAGE>

ARTICLE IV

         COVENANTS RELATING TO CONDUCT OF BUSINESS..........................44
                  4.1      Conduct of Business by LabOne Pending 
                            the Merger......................................44
                           (a)      Ordinary Course.........................44
                           (b)      Dividends; Changes in Stock.............44
                           (c)      Issuance of Securities................. 45
                           (d)      Governing Documents.....................45
                           (e)      No Acquisitions.........................45
                           (f)      No Dispositions.........................45
                           (g)      No Dissolution, Etc.....................45
                           (h)      Certain Employee Matters................46
                           (i)      Indebtedness; Leases; Capital
                                     Expenditures...........................46
                           (j)      No Solicitation.........................46
                           (k)      Pooling.................................47
                  4.2      Conduct of Business by Holdings Pending 
                             the Merger.....................................47
                           (a)      Ordinary Course.........................47
                           (b)      Dividends; Changes in Stock.............48
                           (c)      Issuance of Securities..................48
                           (d)      Governing Documents.....................48
                           (e)      No Acquisitions.........................48
                           (f)      No Dispositions.........................48
                           (g)      No Dissolution, Etc.....................49
                           (h)      Certain Employee Matters................49
                           (i)      Indebtedness; Leases; Capital
                                     Expenditures...........................49
                           (j)      No Solicitation.........................49
                           (k)      Pooling.................................50
                           (l)      Stock Split.............................51

ARTICLE V

         ADDITIONAL AGREEMENTS..............................................52
                  5.1      Preparation of S-4 and the Proxy Statement.......52
                  5.2      Letter of LabOne's Accountants...................53
                  5.3      Letter of Holdings's Accountants.................53
                  5.4      Access to Information............................53
                  5.5      Stockholders Meetings............................53
                  5.6      Legal Conditions to Merger.......................54
                  5.7      Agreements of Others.............................54
                  5.8      Listing..........................................55
                  5.9      Board of Directors and Officers..................55
                  5.10     Assumption of Plans and Agreements; 
                            Stock Options; Reservation and
                            Registration of Shares..........................55
                  5.11     Indemnification; Directors' 
                            and Officers' Insurance.........................56
                  5.12     Public Announcements.............................58
                  5.13     Other Actions....................................58
                  5.14     Advice of Changes; SEC Filings...................59

                                       iii
<PAGE>

                  5.15     Tax-Free Transaction.............................59
                  5.16     Employment Agreements............................59

ARTICLE VI
         CONDITIONS PRECEDENT...............................................59
                  6.1      Conditions to Each Party's Obligation 
                             to Effect the Merger...........................59
                           (a)      Stockholder Approval....................60
                           (b)      Listing.................................60
                           (c)      Other Approvals.........................60
                           (d)      S-4.....................................60
                           (e)      No Injunctions or Restraints............60
                           (f)      Dissenters..............................61
                           (g)      Tax Opinion.............................61
                           (h)      Stock Split.............................61
                  6.2      Conditions of Obligations of Holdings............61
                           (a)      Representations and Warranties..........61
                           (b)      Performance of Obligations of LabOne....61
                           (c)      No Vesting of LabOne Stock Options......61
                           (d)      Employment Agreements...................62
                           (e)      Fairness Opinion........................62
                           (f)      Officers' Certificate...................62
                           (g)      Letters from Affiliates.................62
                           (h)      Financing...............................62
                  6.3      Conditions of Obligations of LabOne..............62
                           (a)      Representations and Warranties..........62
                           (b)      Performance of Obligations of Holdings..63
                           (c)      Fairness Opinion........................63
                           (d)      Officers' Certificate...................63
                           (e)      Board of Directors and Officers at 
                                     the Effective Time.....................63
                           (f)        Financing.............................63
ARTICLE VII

TERMINATION AND AMENDMENT...................................................63
                  7.1      Termination......................................63
                  7.2      Effect of Termination............................66
                  7.3      Amendment........................................66
                  7.4      Extension; Waiver................................66

ARTICLE VIII

         GENERAL PROVISIONS.................................................67
                  8.1      Payment of Expenses..............................67
                  8.2      Nonsurvival of Representations, 
                            Warranties and Agreements.......................67
                  8.3      Notices..........................................67
                  8.4      Interpretation...................................69
                  8.5      Counterparts.....................................69
                  8.6      Entire Agreement; No Third Party Beneficiaries...69

                                       iv
<PAGE>
 
                  8.7      Governing Law................................... 69
                  8.8      Severability.....................................70
                  8.9      Assignment.......................................70

















































                                        v
<PAGE>

                  EXHIBITS TO THE AGREEMENT AND PLAN OF MERGER


Exhibit                    Description

Exhibit A-1       CForm of Certificate of Merger
Exhibit A-2       --Form of Articles of Merger
Exhibit B         CAmended Articles of Incorporation
Exhibit C         CAmended Bylaws
Exhibit D         CList of Directors and Officers of Surviving Corporation
Exhibit E         --Articles Amendment


GLOSSARY OF DEFINED TERMS

Defined Term                                                Defined in Section

Affiliates................................................................5.7
Agreement............................................................Preamble
Amended Articles of Incorporation......................................2.1(b)
Amended Bylaws.........................................................2.1(c)
Articles Amendment .................................................3.2(d)(i)
Articles of Merger........................................................1.1
Cash Election......................................................2.2(a)(ii)
Cash Election Shares..............................................2.2(a)(iii)
Cash Fraction...................................................2.2(a)(iv)(A)
Cash Price Per Share.................................................Recitals
CERCLA..............................................................3.1(p)(A)
Certificate of Merger.....................................................1.1
Closing...................................................................1.1
Closing Date..............................................................1.2
Code.................................................................Recitals
Constituent Corporations...............................................2.1(a)
Delaware Law........................................................ Recitals
Disbursing Agent....................................................2.2(b)(i)
Dissenting Shares.........................................................2.3
Distribution Agent............................................... 4.2(d)(iii)
Distribution Fund ................................................4.2(d)(iii)
Effective Time............................................................1.1
Environmental Law...................................................3.1(p)(A)
ERISA............................................................3.1(m)(i)(l)
Excess Shares.....................................................4.2(l)(iii)
Exchange Act...........................................................3.1(b)
Existing Articles of Incorporation.....................................2.1(b)
Existing Bylaws........................................................2.1(c)
Form of Election...................................................2.2(a)(ii)
GAAP...................................................................3.1(e)


                                       vi
<PAGE>

Governmental Entity................................................3.1(d)(iii)
Hazardous Material...................................................3.1(p)(B)
Holdings..............................................................Preamble
Holdings Acquisition Proposal...........................................4.2(j)
Holdings Benefit Programs.........................................3.2(m)(i)(2)
Holdings Common Stock.................................................Recitals
Holdings Common Stock Trust.........................................4.2(d)(iv)
Holdings Commonly Controlled Equity..............................3.2(m)(ii)(8)
Holdings Intangible Property............................................3.2(o)
Holdings Letter.........................................................3.2(a)
Holdings Litigation.....................................................3.2(k)
Holdings Material Adverse Change........................................3.2(a)
Holdings Material Adverse Effect........................................3.2(a)
Holdings Order..........................................................3.2(k)
Holdings Permits........................................................3.2(j)
Holdings Plans....................................................3.2(m)(i)(1)
Holdings Representatives................................................4.2(j)
Holdings Preferred Stock................................................3.2(b)
Holdings SEC Documents..................................................3.2(e)
Holdings Stock Option...................................................2.2(f)
Holdings Stock Option Plan..............................................2.2(f)
Holdings Stockholder Meeting...............................................5.5
Holdings Voting Debt....................................................3.2(b)
Indemnified Liabilities...................................................5.11
Indemnified Parties.......................................................5.11
Injunction..............................................................6.1(e)
IRS..............................................................3.1(m)(ii)(5)
LabOne................................................................Preamble
LabOne Acquisition Proposal.............................................4.1(j)
LabOne Benefit Programs...........................................3.1(m)(i)(2)
LabOne Common Stock...................................................Recitals
LabOne Commonly Controlled Entity................................3.1(m)(ii)(8)
LabOne Intangible Property..............................................3.1(o)
LabOne Letter...........................................................3.1(a)
LabOne Litigation.......................................................3.1(k)
LabOne Material Adverse Change..........................................3.1(a)
LabOne Material Adverse Effect..........................................3.1(a)
LabOne Order............................................................3.1(k)
LabOne Permits..........................................................3.1(j)
LabOne Plans......................................................3.1(m)(i)(1)
LabOne Preferred Stock..................................................3.1(b)
LabOne Representatives .................................................4.1(j)
LabOne SEC Documents....................................................3.1(e)
LabOne Stock Option.......................................................5.10
LabOne Stock Option Plans...............................................3.1(b)
LabOne Stockholder Meeting.................................................5.5
LabOne Voting Debt.......................................................3.1(b)

                                       vii
<PAGE>

Letter of Transmittal............................................ 2.2(b)(i)(A)
Maximum Cash Payment Amount........................................2.2(a)(iii)
Merger................................................................Recitals
Merger Consideration.................................................2.2(a)(i)
Missouri Law...............................................................1.1
Partial Cash Election...............................................2.2(a)(ii)
OSHA.................................................................3.1(p)(A)
PBGC.............................................................3.1(m)(ii)(5)
Proxy Statement.........................................................3.1(f)
Related Person..........................................................3.1(x)
Release..............................................................3.1(p)(C)
Remedial Action......................................................3.1(p)(D)
Returns..............................................................3.1(l)(i)
S-4.....................................................................3.1(f)
SEC.....................................................................3.1(d)
Securities Act..........................................................3.1(f)
SLH Tax Sharing Agreement...........................................3.2(l)(iv)
Special Committee.....................................................Recitals
Stock Election......................................................2.2(a)(ii)
Stockholder Meetings.......................................................5.5
Stock Split.............................................................3.2(g)
Subsidiary or Subsidiaries..............................................3.1(a)
Surviving Corporation...................................................2.1(a)
Surviving Corporation Common Stock....................................Recitals
Surviving Corporation Material Adverse Effect...........................6.1(c)
Taxes...................................................................3.1(l)
Tax Sharing Agreement...............................................3.1(l)(iv)
Transfer Agent.......................................................2.2(a)(i)
Unaffiliated LabOne Stockholders........................................3.1(q)
Warrant.................................................................3.1(b)

                                      viii
<PAGE>


                          AGREEMENT AND PLAN OF MERGER,
                             as amended and restated

     AGREEMENT AND PLAN OF MERGER, as amended and restated, dated March as of 7,
1999  (the  "Agreement"),   by  and  between  Lab  Holdings,  Inc.,  a  Missouri
corporation ("Holdings"), and LabOne, Inc., a Delaware corporation ("LabOne").

     WHEREAS,  (i) the  Board of  Directors  of  LabOne  established  a  special
committee of independent directors (the "Special Committee") to represent solely
the interests of LabOne and the Unaffiliated  LabOne Stockholders (as defined in
Section  3.1 (q))  with  respect  to any  merger or other  acquisition  proposal
concerning  LabOne,  (ii) the Special  Committee is  authorized  to exercise all
lawfully  delegable  powers of the LabOne Board of Directors with respect to any
such merger or  acquisition  proposal and pursuant  thereto has  negotiated  the
terms and conditions of the Agreement  with the assistance of independent  legal
and  financial  advisers to the  Special  Committee,  (iii) the LabOne  Board of
Directors is required by Section 252 of the  Delaware  General  Corporation  Law
("Delaware  Law") to adopt and approve a resolution  approving the Agreement and
has done so in accordance with a recommendation by the Special Committee;

     WHEREAS,  the Special Committee has determined that it is in furtherance of
and consistent with the long-term  business  strategies of LabOne and is fair to
and in the best interests of the Unaffiliated  LabOne Stockholders for LabOne to
merge with and into  Holdings  upon the terms and subject to the  conditions  in
this Agreement (the "Merger"), pursuant to which each share of common stock, par
value $0.01 per share,  of LabOne ("LabOne Common Stock") issued and outstanding
immediately  prior to the  Effective  Time (other  than shares of LabOne  Common
Stock held by Holdings), subject to the Maximum Cash Payment Amount specified in
Section  2.2(a)(iii) and subject to prior  effectiveness  of the Stock Split (as
defined in Section 3.2(g), shall be converted, at the option of the holder, into
either,  or a combination of (a) the right to receive an amount in cash equal to
$12.75 (the "Cash Price Per Share") or (b) the right to receive one (1) share of
Surviving Corporation Common Stock; provided, however, that immediately prior to
the  Effective  Time (as defined in Section 1.1)  Holdings  shall effect a Stock
Split (as defined in Section 3.2(g)) (payable as a dividend),  pursuant to which
each issued and  outstanding  share of common stock , par value $1.00 per share,
of Holdings  ("Holdings  Common  Stock") shall be converted  into  (assuming the
effectiveness of the Merger) 1.50 shares of Surviving Corporation Common Stock;

     WHEREAS,  the  Boards  of  Directors  of  Holdings  and  LabOne  each  have
determined  that the  Merger is in  furtherance  of and  consistent  with  their
respective  long-term  business  strategies  and is  fair  to  and  in the  best
interests of their respective stockholders;

                                        1
<PAGE>

     WHEREAS,  for federal  income tax purposes,  it is intended that the Merger
shall qualify as a tax free transaction under the United States Internal Revenue
Code of 1986, as amended (the "Code"); and

     WHEREAS,  Holdings  and  LabOne  desire  to make  certain  representations,
warranties,  covenants and agreements in connection  with the Merger and also to
prescribe various conditions to the Merger;

     NOW, THEREFORE,  in consideration of the foregoing and the representations,
warranties,  covenants and  agreements  herein  contained,  the parties agree as
follows:

                               CERTAIN DEFINITIONS

     As used in this  Agreement,  "Subsidiary"  or  "Subsidiaries"  means,  with
respect  to  any  party,   any  corporation  or  other   organization,   whether
incorporated or unincorporated, of which: (i) such party or any other Subsidiary
of such party is a general partner (excluding partnerships,  the general partner
interests of which are held by such party or any  Subsidiary  of such party that
do not have a majority of the voting interest in such  partnership);  or (ii) at
least a majority  of the  securities  or other  interests  having by their terms
ordinary  voting  power to elect a majority of the Board of  Directors or others
performing   similar  functions  with  respect  to  such  corporation  or  other
organization is, directly or indirectly, owned or controlled by such party or by
any one or more of its Subsidiaries, or by such party and any one or more of its
Subsidiaries;  provided,  that LabOne and its  Subsidiaries  shall not be deemed
Subsidiaries of Holdings.

                                    ARTICLE I

                                   THE MERGER

     1.1 The Merger; Effective Time of the Merger. Upon the terms and conditions
of this  Agreement and in  accordance  with the Delaware Law and The General and
Business  Corporation  Law of Missouri  (the  "Missouri  Law"),  LabOne shall be
merged with and into Holdings at the Effective Time (as hereinafter defined). As
soon  as  practicable  after  the  closing  of the  Merger  (the  "Closing"),  a
certificate of merger in  substantially  the form attached hereto as Exhibit A-1
(the  "Certificate  of Merger"),  prepared and executed in  accordance  with the
relevant  provisions of the Delaware  Law,  shall be filed with the Secretary of
State of Delaware,  and articles of merger,  in substantially  the form attached
hereto as Exhibit A-2 (the  "Articles  of  Merger"),  prepared  and  executed in
accordance with the relevant provisions of the Missouri Law, shall be filed with
the  Secretary  of State of Missouri.  The Merger shall become  effective at the
time (the  "Effective  Time") when the  Secretary of State of Missouri  issues a
certificate of merger attaching to it the Articles of Merger.


                                        2
<PAGE>

     1.2  Closing.  Unless this  Agreement  shall have been  terminated  and the
transactions  herein  contemplated shall have been abandoned pursuant to Section
7.1,  the  Closing  shall take place at 10:00 a.m. on the same  business  day on
which there is satisfaction (or waiver in accordance with this Agreement) of the
latest to occur of the  conditions  (other than  deliveries of instruments to be
made at Closing) set forth in Article VI (the "Closing Date"), at the offices of
Lathrop & Gage L.C., 2345 Grand  Boulevard,  Kansas City,  Missouri 64108 unless
another date, time or place is agreed to in writing by the parties hereto.

                                   ARTICLE II

                              EFFECT OF THE MERGER

     2.1      Effects of the Merger.

     (a) Surviving  Corporation.  At the Effective Time,  LabOne shall be merged
with and into  Holdings,  the  separate  existence  of  LabOne  shall  cease and
Holdings  shall continue as the surviving  corporation  (Holdings and LabOne are
sometimes  referred to herein as the "Constituent  Corporations" and Holdings is
sometimes referred to herein as the "Surviving Corporation").

     (b) Articles of Incorporation. The Articles of Incorporation of Holdings as
in effect  immediately  prior to the Effective Time (the  "Existing  Articles of
Incorporation") shall be amended to read as set forth in Exhibit B (the "Amended
Articles of Incorporation")  and the Amended Articles of Incorporation  shall be
the Articles of Incorporation of the Surviving Corporation.

     (c) Bylaws.  The Bylaws of Holdings as in effect  immediately  prior to the
Effective Time (the "Existing  Bylaws") shall be amended to read as set forth in
Exhibit  C (the  "Amended  Bylaws")  and shall be the  Bylaws  of the  Surviving
Corporation.

     (d)  Directors  and  Officers.  The  individuals  named on Exhibit D hereto
shall,  from and after the Effective  Time, be the directors and officers of the
Surviving  Corporation.  The initial  terms of such  directors  are set forth on
Exhibit D. Prior to the Effective Time, one additional  person with  significant
experience  in the clinical  laboratories  industry will be named as a director,
and such person's  initial term shall be set, by mutual agreement of the Special
Committee and Holdings. All such persons shall serve until their successors have
been duly  elected or appointed  and  qualified  or until their  earlier  death,
resignation or removal in accordance with the Amended  Articles of Incorporation
and Amended  Bylaws.  If any such person  becomes  unable or  unwilling to serve
prior to the  Effective  Time for any reason,  such  vacancy  shall be filled as
provided in Section 5.9. Directors and officers of Holdings immediately prior to
the

                                        3
<PAGE>
Effective  Time who are not so named shall cease to be directors and officers of
the Surviving Corporation from and after the Effective Time.

     (e) Other.  The Merger  shall have such other  effects as  specified in the
Delaware Law and the Missouri Law.

     2.2 Effect of the Merger on Capital Stock. At the Effective Time, by virtue
of the Merger and without any action on the part of the Constituent Corporations
or their respective stockholders:

     (a)      LabOne Common Stock.

     (i)  Subject  to the  provisions  of this  Section  2.2(a) and to the prior
          effectiveness  of the Stock Split,  each share of LabOne  Common Stock
          issued and outstanding  immediately prior to the Effective Time (other
          than  shares  of  LabOne  Common  Stock  held by  Holdings)  shall  be
          converted into, at the option of the holder, either, or a combination,
          of the following (the "Merger Consideration"):

                       (A)      the right to receive an amount in cash equal  to
                  the Cash Price Per Share; or

                       (B) the  right to  receive  one (1)  share  of  Surviving
                  Corporation Common Stock.

     All such shares of LabOne Common Stock, when so converted,  shall no longer
be outstanding and shall  automatically  be canceled and retired and shall cease
to exist,  and each holder of a certificate  representing  any such shares shall
cease to have any rights with respect  thereto,  except that, from and after the
Effective Time, certificates representing LabOne Common Stock (other than shares
to be canceled in accordance with Section 2.2(c) and other than shares converted
into the right to receive  cash as  provided  herein)  immediately  prior to the
Effective  Time  shall be deemed for all  purposes  to  represent  the number of
shares of  Surviving  Corporation  Common  Stock into which they were  converted
pursuant to this  subparagraph (a) (provided that if an exchange of certificates
formerly   representing  LabOne  Common  Stock  for  certificates   representing
Surviving  Corporation  Common  Stock is required by law or  applicable  rule or
regulation, the parties will cause the Surviving Corporation to arrange for such
exchange on a one  share-for-one  share basis).  Following  the Effective  Time,
holders  of such  certificates  converted  into the right to  receive  stock may
obtain  new  certificates  that bear the name  "LabOne,  Inc." and that  reflect
Missouri  as the  state of  incorporation  and a par value of $0.01 per share by
delivering the old certificates to American Stock Transfer and Trust Company, or
such other institution as may be the transfer agent of the Surviving

                                        4
<PAGE>
Corporation  (the  "Transfer  Agent"),  together  with  properly  completed  and
executed transmittal documents specified by the Transfer Agent.

     (ii) Subject to the  provisions  of this  Section  2.2 (a) and to the prior
          effectiveness  of the Stock  Split,  each  record  holder of shares of
          LabOne Common Stock  immediately  prior to the Effective  Time will be
          entitled  at his or her  election,  (i) to receive  the Cash Price Per
          Share  for all of such  holder's  shares  ("Cash  Election");  (ii) to
          receive the Cash Price Per Share for a stated  number of such holder's
          shares  and to  receive  Surviving  Corporation  Common  Stock for the
          balance of such holder's shares ("Partial Cash Election"); or (iii) to
          receive  Surviving  Corporation  Common Stock for all of such holder's
          shares  ("Stock  Election").  All  Cash  Elections  and  Partial  Cash
          Elections shall be unconditional  and made on a form designed for that
          purpose  and  mutually  agreeable  to LabOne and  Holdings (a "Form of
          Election").  The Form of Election shall be mailed to holders of record
          of shares of LabOne Common Stock as of the record date for the meeting
          of LabOne  stockholders  referred to in Section 5.5. At the  Effective
          Time, all shares of LabOne Common Stock,  except shares held by LabOne
          or Holdings and shares which are  converted  into the right to receive
          cash  pursuant to a Cash  Election or Partial Cash  Election  that has
          been  properly and timely  made,  shall be  converted  into  Surviving
          Corporation  Common Stock. Any holder of shares of LabOne Common Stock
          who fails to properly  make a Cash  Election or Partial Cash  Election
          and any holder who fails to submit to the Disbursing Agent referred to
          below  a  properly  completed  and  signed  and  properly  and  timely
          submitted  Form of  Election  shall  be  deemed  to have  made a Stock
          Election and will receive Surviving Corporation Common Stock as Merger
          Consideration.

     (iii) Notwithstanding anything contained herein to the contrary, the amount
payable in cash with  respect to the number of shares of LabOne  Common Stock to
be converted pursuant to this Agreement into the right to receive cash shall not
be more than  $16,600,000 in the aggregate (the "Maximum Cash Payment  Amount").
If the  amount  payable  in cash with  respect to the number of shares of LabOne
Common  Stock for which a Cash  Election  or a Partial  Cash  Election  was made
(collectively,  the "Cash  Election  Shares")  exceeds the Maximum  Cash Payment
Amount, then the consideration to be received by stockholders of LabOne who have
made a Cash Election or a Partial Cash Election  shall be adjusted in the manner
provided below.

     (iv) If the cash  otherwise  payable with respect to Cash  Election  Shares
exceeds the Maximum  Cash  Payment  Amount,  the Cash  Election  Shares shall be
converted into the right to receive Surviving  Corporation Common Stock and cash
in the following  manner,  so that each Cash  Election  Share shall be converted
into the right to receive:

                                        5
<PAGE>

                       (A) an amount in cash  (rounded to the  nearest  cent and
                  subject to adjustment,  as provided in clause (iv)(B)  below),
                  without  interest,  equal to the product of (A) the Cash Price
                  Per Share and (B) a fraction ("Cash Fraction"),  the numerator
                  of which  shall be the  Maximum  Cash  Payment  Amount and the
                  denominator  of which shall be the  aggregate  amount  payable
                  (except for clause (iii) of this  paragraph  (a)) with respect
                  to all Cash Election Shares; and

                       (B) a number of shares of  Surviving  Corporation  Common
                  Stock equal to the product of (I) one (1) multiplied by (II) a
                  fraction  equal to one ( 1) minus  the Cash  Fraction.  If the
                  product of clause  (iv)(B)(I)  and (II) result in a fractional
                  share (taking into account all Cash Election  Shares held by a
                  holder),  then th number of  shares to be issued  such  holder
                  shall be rounded up to the nearest  whole number of shares and
                  the amount of cash payable  such holder  under clause  (iv)(A)
                  shall be reduced by $12.75  less the value of such  fractional
                  share.

     (v) If the  aggregate  amount  payable  with  respect to all Cash  Election
Shares is less than the Maximum Cash  Payment  Amount,  then each Cash  Election
Share shall be converted into the right to receive the Cash Price Per Share.

(b)      Payment of Merger Consideration for Cash Election Shares.

     (i) Deposit of Cash and Shares. Prior to the Effective Time, Holdings shall
appoint American Stock Transfer &Trust Company,  or such other institution as it
may select, to act as disbursing agent (the "Disbursing  Agent") for the payment
of Merger  Consideration  with respect to Cash Election Shares upon surrender of
certificates representing the shares of LabOne Common Stock. Holdings will enter
into a  disbursing  agent  agreement  with  the  Disbursing  Agent,  in form and
substance  reasonably  acceptable to LabOne.  At the Effective  Time,  Surviving
Corporation  shall deposit or cause to be deposited with the Disbursing Agent in
trust for the  benefit of  LabOne's  stockholders  cash in an  aggregate  amount
necessary to make the cash payments  pursuant to Section  2.2(a) and such number
of shares of Surviving Corporation Common Stock necessary to exchange the LabOne
Common Stock for Surviving Corporation Stock pursuant to Section 2.2(a).

     (ii)     Election and Payment Procedures.

                       (A)  Holdings  shall  prepare and mail a Form of Election
                  contained in a letter of transmittal ("Letter of Transmittal")
                  with  the  Joint  Proxy  Statement/Prospectus  to  the  record
                  holders of LabOne  Common  Stock as of the record date for the
                  LabOne meeting of stockholders referred to in

                                        6

<PAGE>

                  Section 5.5. The Form of Election  shall specify that delivery
                  shall be  effected,  and risk of loss and title to the  LabOne
                  certificates  shall  pass,  only upon  proper  delivery of the
                  LabOne  certificates  to the Disbursing  Agent,  shall contain
                  instructions  for use in  effecting  the  surrender  of LabOne
                  certificates  in  exchange  for  payment of the Cash Price Per
                  Share to  stockholders  who wish to make a Cash  Election or a
                  Partial Cash Election,  and shall be subject to the reasonable
                  approval  of LabOne.  Such Form of  Election  shall be used by
                  each record holder of shares of LabOne Common Stock who wishes
                  to elect to  receive  the Cash  Price Per Share for any or all
                  any or all  such  shares  held by such  holder.  Holdings  and
                  LabOne  shall  use  reasonable  efforts  to make  the  Form of
                  Election and related Letter of Transmittal and the Joint Proxy
                  Statement/Prospectus  available  to  all  persons  who  become
                  record holders of LabOne Common Stock during the period period
                  between  such record date and the  Election  Date  referred to
                  below.

                       (B) Any stockholder's  election to receive the Cash Price
                  Per Share shall have been properly made only if the Disbursing
                  Agent shall have received at its designated  office,  by 10:00
                  a.m.,   New  York  City  time,  on  the  date  of  the  LabOne
                  Stockholders Meeting (the "Election Date"), a Form of Election
                  and related  Letter of  Transmittal,  properly  completed  and
                  signed,  and  accompanied  by  certificates  for the shares of
                  LabOne  Common  Stock to which such Form of Election  relates,
                  properly endorsed or otherwise in proper form for transfer (or
                  accompanied  by an  appropriate  guarantee of delivery of such
                  certificates as set forth in such Letter of Transmittal from a
                  firm  which is a member of a  registered  national  securities
                  exchange or of the National Association of Securities Dealers,
                  Inc. or a commercial bank or trust company having an office or
                  correspondent in the United States, provided such certificates
                  are in fact  delivered  to the  Disbursing  Agent within three
                  trading days after the date of execution of such  guarantee of
                  delivery).  Failure  to  deliver  certificates  covered  by  a
                  guarantee of delivery within three trading days after the date
                  of execution of such  guarantee of delivery shall be deemed to
                  invalidate  any  otherwise  properly  made  Cash  Election  or
                  Partial Cash Election.

                       (C) The  stockholder  who submitted it to the  Disbursing
                  Agent may revoke any Form of Election  only by written  notice
                  received by the Disbursing Agent prior to 10:00 a.m., New York
                  City time,  on the Election  Date.  In addition,  all Forms of
                  Election  shall  automatically  be revoked  if the  Disbursing
                  Agent is notified  in writing by Holdings  and LabOne that the
                  Merger has been  abandoned.  If a Form of Election is revoked,
                  the certificate or certificates (or guarantees of delivery, as
                  appropriate)  for the shares of LabOne  Common  Stock to which
                  such Form of Election relates

                                        7
<PAGE>
                  shall  be  promptly returned to the stockholder submitting the
                  same to the Disbursing Agent.

                       (D) Promptly  after the  Effective  Time,  the  Surviving
                  Corporation shall cause the Disbursing Agent to pay the Merger
                  Consideration  elected  by  such  holder  in  accordance  with
                  Section 2.2(a) to each stockholder who has timely and properly
                  submitted his or her LabOne certificates  together with a duly
                  executed Letter of Transmittal and such other documents as may
                  be  reasonably  required  by the  Disbursing  Agent,  and such
                  LabOne  certificate  shall forthwith be canceled.  No interest
                  will be paid or accrued on the  Merger  Consideration  payable
                  upon the surrender of the LabOne  certificates.  If payment is
                  to be made to a person other than the person in whose name the
                  LabOne  certificate  surrendered is registered,  it shall be a
                  condition   of  payment   that  the  LabOne   certificate   so
                  surrendered  be properly  endorsed or  otherwise  be in proper
                  form for transfer and that the person  requesting such payment
                  pay any  transfer  or other  taxes  required  by reason of the
                  payment to a person  other than the  registered  holder of the
                  LabOne   certificate   surrendered   or   establish   to   the
                  satisfaction  of the Surviving  Corporation  that such tax has
                  been paid or is not applicable.

                       (E)  Surviving  Corporation  shall  have the  discretion,
                  which it may  delegate  in whole or in part to the  Disbursing
                  Agent,  to  determine  whether  Forms of  Election  have  been
                  properly completed,  signed and submitted and to disregard any
                  defects  it  determines  are   immaterial.   The  decision  of
                  Surviving  Corporation or the Disbursing Agent on such matters
                  shall be conclusive  and binding.  Neither  LabOne,  Holdings,
                  Surviving  Corporation nor the Disbursing Agent shall be under
                  any  obligation to notify any person of any defect in a Letter
                  of Transmittal submitted to the Disbursing Agent. If Surviving
                  Corporation  or  Disbursing  Agent  shall  determine  that any
                  purported  Cash  Election or Partial Cash Election was not not
                  properly made,  such purported  election shall be deemed to be
                  of no  force  and  effect  and  any  stockholder  making  such
                  purported  Cash  Election or Partial Cash  Election  shall for
                  purposes hereof be deemed to have made a Stock Election.

                       (F) The Disbursing  Agent shall make all  computations as
                  to the proration  contemplated by Section  2.2(a)(v),  and any
                  such  computation  shall  be  conclusive  and  binding  on the
                  holders of shares of LabOne Common Stock. The Disbursing Agent
                  may,  with the mutual  agreement of Holdings and LabOne,  make
                  such rules as are  consistent  with this  Section  2.2 for the
                  implementation  of the elections  provided for herein as shall
                  be necessary or desirable fully to effect such elections.

                                        8
<PAGE>

     (iii) All cash paid upon the  surrender  of LabOne  certificates  including
Cash Election  Shares in accordance  with the terms of this Section 2.2 shall be
deemed to have been paid in full  satisfaction  of all rights  pertaining to the
shares  of  LabOne   Common  Stock   previously   represented   by  such  LabOne
certificates.

     (iv) At any time more than 180 days after the Effective Time, the Surviving
Corporation  shall be entitled to require the Disbursing  Agent to deliver to it
any funds or shares of  Surviving  Corporation  Common Stock which had been made
available  to the  Disbursing  Agent and not  disbursed  in exchange  for LabOne
certificates (including,  without limitation, all interest,  dividends and other
income  received  by the  Disbursing  Agent in  respect  of all such  funds  and
shares). Thereafter, holders of shares of LabOne Common Stock shall look only to
the Surviving  Corporation  (subject to the terms of this  Agreement,  abandoned
property,  escheat and other  similar  laws) as general  creditors  thereof with
respect to any Merger Consideration that may be payable,  without interest, upon
due surrender of the LabOne certificates held by them.

     (v) No dividends or other  distributions  declared after the Effective Time
with  respect  to  Surviving  Corporation  Common  Stock  which are  payable  to
shareholders of record of Surviving  Corporation  after the Effective Time shall
be paid to a stockholder of LabOne with respect to Cash Election Shares.

          (c)  LabOne  shares held by Holdings and LabOne.  Each share of LabOne
               Common Stock held by Holdings or LabOne  shall,  by virtue of the
               Merger, and without any action on the part of Holdings or LabOne,
               cease to be outstanding  and be cancelled  without payment of any
               consideration therefor and shall cease to exist.

          (d)  Holdings  Common Stock.  Subject to the provisions of Section 2.3
               hereof,   each  share  of  Holdings   Common   Stock  issued  and
               outstanding  immediately  prior to the Effective Time (other than
               Dissenting  Shares (as  hereinafter  defined))  and each treasury
               share, assuming the prior effectiveness of the Stock Split, shall
               be converted into a share of Surviving  Corporation  Common Stock
               (provided   that  if  an   exchange  of   certificates   formerly
               representing Holdings Common Stock for certificates  representing
               Surviving   Corporation  Common  Stock  is  required  by  law  or
               applicable  rule  or  regulation,  the  parties  will  cause  the
               Surviving  Corporation  to  arrange  for such  exchange  on a one
               share-for-one share basis).  Following the Effective Time holders
               of such  shares may obtain  new  certificates  that bear the name
               "LabOne,  Inc."  and  that  reflect  Missouri  as  the  state  of
               incorporation  and a par value of $0.01  per share by  delivering
               the old  certificates  to the  Transfer  Agent  of the  Surviving
               Corporation   together  with  properly   completed  and  executed
               transmittal documents specified by the Transfer Agent.

          (e)  Assumption of LabOne Stock Options. Each outstanding LabOne Stock
               Option  (as  defined  in  Section  5.10)  shall be assumed by the
               Surviving Corporation as

                                        9

<PAGE>

provided  in  Section  5.10.  No  LabOne  Stock  Options  shall  vest or  become
exercisable  as a  result  of  the  Merger  or  change  in  stock  ownership  or
composition of the Board of Directors of the Surviving Corporation.

          (f)  Adjustment  of  Holdings   Stock   Options.   The  Holdings  1997
               Directors'  Stock Option Plan,  as amended (the  "Holdings  Stock
               Option  Plan") and stock  options  issued  thereunder  ("Holdings
               Stock  Options")  shall be adjusted and amended in the  following
               manner, subject to the prior effectiveness of the Stock Split, at
               the Effective Time:

               (i)  The number of shares authorized for issuance under Section 4
                    of the  Holdings  Stock  Option Plan shall be adjusted to an
                    amount equal to the product of 90,000 times 1.50.

               (ii) The first sentence of Section 5 of the Holdings Stock Option
                    Plan  shall  be  amended  at the  Effective  Time to add the
                    following proviso:  "provided,  however, no options shall be
                    granted under the Plan from and after the Effective  Time of
                    any merger of LabOne into Holdings."

               (iii)The  amendments  to  the  Holdings  Stock  Option  Plan  and
                    Holdings  Stock  Options  outstanding  thereunder  that were
                    adopted by the Board of  Directors of Holdings on August 27,
                    1998  extending  the period during which such options may be
                    exercised following termination of director status, shall be
                    deemed ratified, confirmed and approved.

               (iv) Holdings  Stock  Options  granted  under the Holdings  Stock
                    Option Plan that are  outstanding  immediately  prior to the
                    Effective  Time  shall be  adjusted  such that the number of
                    shares  subject  to each  option  immediately  prior  to the
                    Effective Time shall be increased to an amount equal to such
                    number  times  1.50 and the  price to be paid for each  such
                    share upon exercise shall be reduced to a price equal to the
                    exercise  price  immediately  prior  to the  Effective  Time
                    divided by 1.50.

               (v)  The  foregoing  shall be  deemed  to  adjust  and  otherwise
                    supersede  any  conflicting   provisions  contained  in  the
                    Holdings Stock Option Plan or the option agreements covering
                    the Holdings  Stock  Options,  including  the  provisions of
                    Section 3 of each such option agreements.

          (g)  Stated Capital.  Immediately after the Effective Time, the stated
               capital  of  the  Surviving   Corporation  shall  be  reduced  by
               transferring  from stated capital to paid-in- surplus all amounts
               in excess  of the  aggregate  par  value of  shares of  Surviving
               Corporation  Common  Stock  issued  after  giving  effect  to the
               Merger.

                                       10
<PAGE>

         2.3 Dissenting  Shares.  Notwithstanding  anything in this Agreement to
the contrary,  shares of Holdings  Common Stock that are issued and  outstanding
immediately  prior to the Effective Time and which are held by shareholders  who
have properly  exercised  dissenters'  rights with respect thereto under Section
351.455 of the Missouri Law (the "Dissenting  Shares") shall not be converted as
provided  in Section  2.2(d),  but the  holders of  Dissenting  Shares  shall be
entitled to receive  such  payment of the fair value of such shares held by them
from the Surviving  Corporation as shall be determined in a judicial  proceeding
pursuant to the Missouri Law; provided,  however,  that if any such holder shall
have  failed to perfect or shall  withdraw  or lose the right to  appraisal  and
payment under the Missouri Law,  each such  holder's  shares shall  thereupon be
deemed to have been  converted  as of the  Effective  Time  without any interest
thereon,  as provided  in Section  2.2(d),  and such  shares  shall no longer be
Dissenting Shares.

         2.4 No  Liability.  Neither  Holdings nor LabOne shall be liable to any
holder of shares of LabOne Common Stock or Holdings  Common  Stock,  as the case
may be, for such shares (or dividends or  distributions  with respect  thereto),
any  Merger  Consideration  or cash in lieu of  fractional  shares of  Surviving
Corporation  Common  Stock  delivered  to a  public  official  pursuant  to  any
applicable  abandoned  property,  escheat or similar law. Any amounts  remaining
unclaimed by holders of any such shares on the day immediately preceding the day
on which such  amounts  would  otherwise  escheat to or become  property  of any
governmental entity shall, to the extent permitted by applicable law, become the
property of  Surviving  Corporation  free and clear of any claims or interest of
any such  holders  or their  successors,  assigns  or  personal  representatives
previously entitled thereto.

                                   ARTICLE III

                         REPRESENTATIONS AND WARRANTIES

         3.1  Representations  and Warranties of LabOne.  LabOne  represents and
warrants to Holdings as follows:

         (a)   Organization,   Standing  and  Power.  Each  of  LabOne  and  its
Subsidiaries  is a corporation,  partnership or limited  liability  company duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction of its  incorporation or organization,  has all requisite power and
authority to own,  lease and operate its properties and to carry on its business
as now  being  conducted,  and is  duly  qualified  and in good  standing  to do
business in each  jurisdiction  in which the business it is  conducting,  or the
operation,  ownership  or leasing of its  properties,  makes such  qualification
necessary,  other than in such jurisdictions  where the failure to qualify would
not have a LabOne  Material  Adverse  Effect  (as  defined  below).  LabOne  has
heretofore  delivered to Holdings complete and correct copies of its Certificate
of  Incorporation  and Bylaws and the  organizational  documents  of each of its
Subsidiaries.  All Subsidiaries of LabOne,  the percentage of LabOne's ownership
of such Subsidiaries, the identity and percentage ownership of all

                                       11

<PAGE>

other persons with equity  interests in such  Subsidiaries  and their respective
jurisdictions of incorporation or organization are identified on Schedule 3.1(a)
of the letter  dated and  delivered  to Holdings on the date hereof (the "LabOne
Letter"),  which relates to this  Agreement  and is designated  therein as being
LabOne Letter. As used in this Agreement,  a "LabOne Material Adverse Effect" or
"LabOne  Material  Adverse  Change"  shall  mean any  effect or change  that is,
individually  or  in  the  aggregate,   materially   adverse  to  the  business,
operations,  assets,  condition (financial or otherwise) or results of operation
of LabOne and its  Subsidiaries  taken as a whole  except for  general  economic
changes  and  changes  that may  affect the  industries  of LabOne or any of its
Subsidiaries generally.

         (b) Capital  Structure.  As of the date hereof,  the authorized capital
stock of LabOne consists of 40,000,000  shares of LabOne Common Stock, par value
$0.01 per share,  and 1,000,000  shares of preferred  stock, par value $0.01 per
share ("LabOne Preferred  Stock").  At the close of business on the date hereof,
(i) 13,311,450  shares of LabOne Common Stock are issued and  outstanding,  (ii)
2,150,000  shares are reserved for issuance  pursuant to LabOne's 1987 Long Term
Incentive  Plan,  1,000,000  shares of LabOne  Common  Stock  are  reserved  for
issuance  pursuant to LabOne's 1997  Incentive  Plan , 100,000  shares of LabOne
Common  Stock are  reserved  for  issuance  pursuant to LabOne's  Stock Plan for
Non-Employee  Directors and 1,000,000 shares of LabOne Common Stock are reserved
for issuance  pursuant to warrants  issued to National  Support  Services,  Inc,
dated  February 23, 1998 and USA Managed Care  Organization,  dated November 13,
1998 (the  "Warrants")  (LabOne's 1987 Long Term Incentive  Plan, 1997 Incentive
Plan, Plan for Non-Employee  Directors and Warrant are collectively  referred to
as the "LabOne Stock Option Plans"), (iii) 869,244 shares of LabOne Common Stock
are issuable  pursuant to outstanding and unvested stock options or other rights
granted  pursuant to LabOne Stock  Option  Plans,  and 968,683  shares of LabOne
Common Stock are issuable  pursuant to  outstanding  and vested stock options or
other rights  granted  pursuant to LabOne Stock Option Plans;  (iv) no shares of
LabOne Preferred Stock are issued and outstanding; and (v) no bonds, debentures,
notes or other  indebtedness  having  the  right  to vote (or  convertible  into
securities having the right to vote) on any matters on which LabOne stockholders
may vote  ("LabOne  Voting  Debt") are issued or  outstanding.  All  outstanding
shares of LabOne  Common Stock have been duly  authorized,  are validly  issued,
fully paid and nonassessable and are not subject to preemptive rights. Except as
set forth on Schedule  3.1(b) of the LabOne Letter,  all  outstanding  shares of
capital stock of the Subsidiaries of LabOne are owned by LabOne,  or a direct or
indirect  wholly  owned  Subsidiary  of  LabOne,  free and  clear of all  liens,
charges, encumbrances,  claims and options of any nature. Except as set forth in
this  Section  3.1(b) or on  Schedule  3.1(b) of LabOne  Letter  and  except for
changes  resulting  from the exercise of employee  stock  options (or  Warrants)
outstanding on the date hereof granted pursuant to LabOne Stock Option Plans, or
as  contemplated  by this  Agreement,  there are  outstanding:  (i) no shares of
capital stock,  LabOne Voting Debt or other voting securities of LabOne; (ii) no
securities  of  LabOne  or  any  Subsidiary  of  LabOne   convertible   into  or
exchangeable  for shares of capital  stock,  LabOne  Voting Debt or other voting
securities of LabOne or any

                                       12

<PAGE>

Subsidiary of LabOne; and (iii) no options,  warrants,  calls, rights (including
preemptive rights),  commitments or agreements to which LabOne or any Subsidiary
of  LabOne is a party or by which it is bound in any case  obligating  LabOne or
any Subsidiary of LabOne to issue, deliver,  sell, purchase,  redeem or acquire,
or cause  to be  issued,  delivered,  sold,  purchased,  redeemed  or  acquired,
additional  shares of capital  stock or any LabOne  Voting Debt or other  voting
securities of LabOne or of any Subsidiary of LabOne, or obligating LabOne or any
Subsidiary  of LabOne to grant,  extend or enter into any such option,  warrant,
call, right, commitment or agreement.  Except as set forth on Schedule 3.1(b) of
LabOne Letter, there are no stockholder agreements,  registration rights, voting
trusts or other similar  agreements or understandings to which LabOne is a party
or by which it is bound.  Except as set forth on  Schedule  3.1(b) of the LabOne
Letter,  there are no restrictions on LabOne's ability to vote the stock held by
LabOne of any of its Subsidiaries. To the knowledge of LabOne, as of the date of
this Agreement,  except for W. D. Grant,  Wallace R. Weitz & Company and a group
consisting of American Century Investment Management,  Inc. and American Century
Capital Portfolios, Inc., no stockholder of LabOne or "group" within the meaning
of Section  13(d)(3) of the  Securities  Exchange  Act of 1934,  as amended (the
"Exchange  Act"),  will be  immediately  after the Effective Time the beneficial
owner of more  than 10% of the then  outstanding  Surviving  Corporation  Common
Stock.

         (c)  Non-Subsidiaries  Equity  Investment.  Schedule  3.1(c)  of LabOne
Letter  sets  forth the book  value of each  investment  by LabOne or any of its
Subsidiaries  in the voting  securities,  partnership  interests or other equity
interests  of  any  corporation,  partnership  or  other  entity  (other  than a
Subsidiary  of  LabOne)  and  the  nature  and  percentage  of  LabOne's  or its
Subsidiaries'  ownership  interests in such  investment.  Except as set forth in
Schedule 3.1(c) of LabOne Letter, the voting securities,  partnership  interests
or other equity  interests of LabOne or its Subsidiaries in such investments are
owned free and clear of all liens, charges and encumbrances.

         (d)      Authority; No Violations; Consents and Approvals.

                  (i)  Upon  the  recommendation  of the  Special  Committee  of
         independent outside directors of the Board of Directors of LabOne, (the
         "Special Committee"), the Board of Directors of LabOne has approved the
         Merger and this Agreement,  by unanimous vote of the directors  (except
         for those  directors who  abstained),  and declared the Merger and this
         Agreement to be advisable and in the best interests of the stockholders
         of LabOne.  LabOne has all requisite  corporate  power and authority to
         enter into this Agreement and, subject, with respect to consummation of
         the  Merger,  to  approval  of this  Agreement  and the  Merger  by the
         stockholders  of  LabOne  in  accordance  with  the  Delaware  Law,  to
         consummate  the  transactions  contemplated  hereby.  The execution and
         delivery of this  Agreement and the  consummation  of the  transactions
         contemplated   hereby  have  been  duly  authorized  by  all  necessary
         corporate action on the part of LabOne, subject, with respect to

                                       13

<PAGE>

         consummation  of the  Merger,  to approval  of this  Agreement  and the
         Merger by the  stockholders  of LabOne in accordance  with the Delaware
         Law. This Agreement has been duly executed and delivered by LabOne and,
         subject,  with respect to  consummation  of the Merger,  to approval of
         this  Agreement  and  the  Merger  by the  stockholders  of  LabOne  in
         accordance   with  the  Delaware  Law,  and  assuming  this   Agreement
         constitutes the valid and binding obligation of Holdings, constitutes a
         valid and binding  obligation of LabOne  enforceable in accordance with
         its terms except to the extent that the  enforcement  of this Agreement
         may  be  limited  by  (i)   bankruptcy,   insolvency,   reorganization,
         moratorium or other similar laws now or hereafter in effect relating to
         creditors'  rights  generally,  and (ii) general  principles  of equity
         regardless of whether  enforceability  is considered in a proceeding in
         equity or at law.

                  (ii)  Except as set  forth on  Schedule  3.1(d) of the  LabOne
         Letter,  the execution and delivery of this Agreement does not, and the
         consummation  of the  transactions  contemplated  hereby and compliance
         with the  provisions  hereof will not,  conflict with, or result in any
         violation of, or default  (with or without  notice or lapse of time, or
         both) under,  or give rise to a right of  termination,  cancellation or
         acceleration  of any  obligation  or to the loss of a material  benefit
         under, or result in the creation of any lien, security interest, charge
         or encumbrance upon any of the properties or assets of LabOne or any of
         its  Subsidiaries  under,  any  provision  of (i)  the  Certificate  of
         Incorporation  or Bylaws of LabOne or any  provision of the  comparable
         charter or organizational  documents of any of its  Subsidiaries,  (ii)
         any loan or  credit  agreement,  note,  bond,  mortgage,  or  indenture
         applicable  to  LabOne  or any of its  Subsidiaries,  (iii)  any  other
         agreement,   instrument,  permit,  concession,   franchise  or  license
         applicable  to LabOne or any of its  Subsidiaries  or (iv) assuming the
         consents,   approvals,   authorizations   or  permits  and  filings  or
         notifications  referred to in Section  3.1(d)(iii)  are duly and timely
         obtained or made and the  approval of the Merger and this  Agreement by
         the  stockholders  of  LabOne  has been  obtained  in  accordance  with
         Delaware Law, any judgment,  order,  decree,  statute,  law, ordinance,
         rule or regulation  applicable to LabOne or any of its  Subsidiaries or
         any of their respective  properties or assets,  other than, in the case
         of clause (iii),  any such  conflicts,  violations,  defaults,  rights,
         liens, security interests,  charges or encumbrances that,  individually
         or in the aggregate,  would not have a LabOne Material  Adverse Effect,
         materially  impair the  ability of LabOne to  perform  its  obligations
         hereunder  or  prevent  the  consummation  of any  of the  transactions
         contemplated hereby.

                  (iii) No  consent,  approval,  order or  authorization  of, or
         registration,  declaration  or filing  with,  or permit from any court,
         administrative agency or commission or other governmental  authority or
         instrumentality,  domestic  or foreign (a  "Governmental  Entity"),  is
         required  by or with  respect to LabOne or any of its  Subsidiaries  in
         connection with the execution and delivery of this Agreement by

                                       14

<PAGE>

         LabOne or the consummation by LabOne of the  transactions  contemplated
         hereby,  as to which the  failure to obtain or make would have a LabOne
         Material Adverse Effect, except for: (A) the filing with the Securities
         and Exchange Commission (the "SEC") of a proxy statement in preliminary
         and definitive form relating to the meeting of LabOne's stockholders to
         be held in  connection  with the  approval  of this  Agreement  and the
         Merger by stockholders  of LabOne,  such reports under Section 13(a) of
         the Exchange Act and such other  compliance with the Securities Act and
         the Exchange  Act and the rules and  regulations  thereunder  as may be
         required  in  connection  with  this  Agreement  and  the  transactions
         contemplated  hereby,  and the obtaining from the SEC of such orders as
         may be so required; (B) filings with, and approval of, the Nasdaq Stock
         Market;  (C) such  filings  and  approvals  as may be  required  by any
         applicable   state   securities,   "blue  sky"  or  takeover  laws,  or
         environmental  laws;  and (D) the filing of the Articles of Merger with
         the Secretary of State of the State of Missouri and the  Certificate of
         Merger with the Secretary of State of the State of Delaware.

         (e) SEC  Documents.  LabOne has made  available  to Holdings a true and
complete copy of each quarterly,  annual or current report on Form 10-Q, 10-K or
8-K, registration  statement and definitive proxy statement filed by LabOne with
the  SEC  since  January  1,  1994,  which  are all the  documents  (other  than
preliminary  material)  that  LabOne  was  required  to file  with the SEC since
January 1, 1994.  LabOne will make  available to  Holdings,  a true and complete
copy of each  quarterly,  annual or current  report on Form  10-Q,  10-K or 8-K,
registration  statement and definitive  proxy statement filed by LabOne with the
SEC  subsequent to the date of this  Agreement and prior to the Effective  Time.
All of such reports and statements filed prior to the date of this Agreement are
hereinafter  referred to as the "LabOne SEC  Documents." As of their  respective
filing dates (or if amended or  superseded by a filing prior to the date hereof,
then on the date of such  filing),  the LabOne  SEC  Documents  complied  in all
material  respects with the  requirements  of the Securities Act or the Exchange
Act,  as the case may be, and the rules and  regulations  of the SEC  thereunder
applicable  to such LabOne SEC  Documents,  and none of the LabOne SEC Documents
contained any untrue statement of a material fact or omitted to state a material
fact required to be stated therein or necessary to make the statements  therein,
in light of the circumstances under which they were made, not misleading.  As of
their respective  filing dates (or if amended or superseded by a filing prior to
the date hereof, then on the date of such filing),  the financial  statements of
LabOne included in the LabOne SEC Documents  complied as to form in all material
respects  with the  published  rules  and  regulations  of the SEC with  respect
thereto,   were  prepared  in  accordance  with  generally  accepted  accounting
principles in effect in the United States ("GAAP") applied on a consistent basis
during  the  periods  involved  (except  (i) as may be  indicated  in the  notes
thereto,  (ii)  in  the  case  of  the  unaudited  financial  statements,   such
differences  in  presentation  or  omissions  as  permitted  by  Rule  10-01  of
Regulation  S-X of the SEC and (iii) the unaudited  financial  statements do not
contain  all notes  required  by GAAP) and  fairly  present in  accordance  with
applicable requirements of GAAP (subject,

                                       15

<PAGE>

in  the  case  of  the  unaudited  financial  statements,   to  normal  year-end
adjustments on a basis comparable with past periods) the consolidated  financial
position  of LabOne and its  consolidated  Subsidiaries  as of their  respective
dates and the consolidated results of operations and the consolidated cash flows
of LabOne and its consolidated Subsidiaries for the periods presented therein.

         (f) Information  Supplied.  None of the  information  supplied or to be
supplied by LabOne for  inclusion or  incorporation  by reference in  Holdings's
1998 Form 10-Ks,  Form 10-Qs or Form 8-Ks or the Registration  Statement on Form
S-4 to be filed with the SEC by  Holdings  in  connection  with the  issuance of
shares of Surviving  Corporation Common Stock in the Merger (the "S-4") will, at
the time the S-4 becomes  effective  under the Securities Act, and the rules and
regulations  thereunder or at the  Effective  Time (or in the case of Holdings's
Form 10-K, upon filing thereof), contain any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary to
make the statements therein not misleading, and none of the information supplied
or to be supplied by LabOne and  included or  incorporated  by  reference in the
related  joint proxy  statement  (the "Proxy  Statement")  will,  at the time of
mailing  thereof or at the time of the meetings of the  stockholders of Holdings
or LabOne to be held in  connection  with the Merger or at the  Effective  Time,
contain any untrue  statement  of a material  fact or omit to state any material
fact required to be stated  therein or necessary in order to make the statements
therein,  in  light  of  the  circumstances  under  which  they  are  made,  not
misleading. If at any time prior to the Effective Time any event with respect to
LabOne or any of its Subsidiaries, or with respect to other information supplied
by LabOne for  inclusion  in the Proxy  Statement  or S-4,  shall occur which is
required to be  described  in an  amendment  of, or a  supplement  to, the Proxy
Statement or the S-4,  such event shall be so described,  and such  amendment or
supplement  shall  be  promptly  filed  with the SEC and,  as  required  by law,
disseminated to the  stockholders of Holdings and LabOne.  The S-4 and the Proxy
Statement,  insofar  as they  relate  to  LabOne  or its  Subsidiaries  or other
information supplied by LabOne for inclusion therein,  will comply as to form in
all material respects with the provisions of the Securities Act and the Exchange
Act, and the rules and regulations thereunder.

         (g) Absence of Certain  Changes or Events.  Except as disclosed  in, or
reflected in the financial statements included in the LabOne SEC Documents or on
Schedule  3.1(g)  of the  LabOne  Letter,  or  except  as  contemplated  by this
Agreement,  since  September  30,  1998,  LabOne  has in all  material  respects
conducted its business only in the ordinary  course and there has not been:  (i)
any declaration,  setting aside or payment of any dividend or other distribution
(whether in cash,  stock or property)  with  respect to any of LabOne's  capital
stock other than regular quarterly cash dividends consistent with past practice;
(ii) any amendment of any material term of any  outstanding  equity  security of
LabOne or any Subsidiary; (iii) any repurchase,  redemption or other acquisition
by LabOne or any Subsidiary of any outstanding  shares of capital stock or other
equity securities of, or other ownership interests in, LabOne or any Subsidiary;
(iv) any material change in any method

                                       16

<PAGE>

of accounting or accounting practice, or in any tax method, principle,  election
or practice by LabOne or any  Subsidiary;  (v) if the covenants  and  agreements
with  respect to LabOne and its  Subsidiaries  set forth in Section 4.1 had been
applicable to LabOne and its  Subsidiaries  during the period from September 30,
1998 to the date of this  Agreement,  any  action,  transaction,  commitment  or
failure to act that would cause LabOne or any such  Subsidiary to fail to comply
with such  covenants  and  agreements;  or (vi) any other  action,  transaction,
commitment,  dispute or other event or condition (financial or otherwise) of any
character  (whether or not in the ordinary  course of business) that has had, or
may reasonably be expected to have, a LabOne Material Adverse Effect.

         (h) No Undisclosed Material  Liabilities.  Except as fully reflected or
reserved against in financial  statements  included in the LabOne SEC Documents,
or  disclosed in the  footnotes  thereto,  or referred to in Schedule  3.1(h) or
elsewhere in LabOne  Letter,  as of the date hereof LabOne and its  Subsidiaries
have no  liabilities,  absolute or  contingent,  other than  liabilities  which,
individually or in the aggregate,  are reasonably  expected not to have a LabOne
Material Adverse Effect. Except as so reflected,  reserved or disclosed,  LabOne
and  its  Subsidiaries  have  no  commitments  which,  individually  or  in  the
aggregate, are reasonably expected to have a LabOne Material Adverse Effect.

         (i) Material Contracts;  No Defaults.  All of the material contracts of
LabOne and its Subsidiaries  that are required to be described in the LabOne SEC
Documents  or to be filed as exhibits  thereto,  or that would be required to be
described or filed if a Form 10-K with respect to the LabOne were required to be
filed on the date  hereof,  have  been  described  or  filed in the  LabOne  SEC
Documents  except as disclosed on Schedule 3.1(i) of the LabOne Letter.  Neither
LabOne nor any of its  Subsidiaries  is in violation of or in default under (and
no event has  occurred  which,  with notice or the lapse of time or both,  would
constitute a default or violation) of any term, condition or provision of (i) in
the  case of  LabOne  and its  Subsidiaries,  their  respective  certificate  or
articles of  incorporation  and bylaws or comparable  organizational  documents,
(ii) except as  disclosed  in Schedule  3.1(i) of the LabOne  Letter,  any note,
bond, mortgage,  indenture, license, agreement or other instrument or obligation
to which LabOne or any of its  Subsidiaries is now a party or by which LabOne or
any of its Subsidiaries or any of their  respective  properties or assets may be
bound or (iii) any order, writ, injunction,  decree, statute, rule or regulation
applicable to LabOne or any of its Subsidiaries,  except in the case of (ii) and
(iii) for defaults or violations  which in the aggregate would not have a LabOne
Material  Adverse  Effect.  Schedule  3.1(i) of the  LabOne  Letter  lists  each
contract (a) containing  covenants which in any way purport to limit the freedom
of LabOne or any of its Subsidiaries to engage in any line of business or engage
in business in any  geographic  area or to compete with any person,  or (b) that
imposes a material obligation (contingent or otherwise) that is not reflected in
LabOne's  audited GAAP financial  statements  and notes thereto  included in its
most recently filed Annual Report on Form 10-K.  Except as disclosed on Schedule
3.1(i) of the LabOne  Letter,  to the  knowledge  of  LabOne,  none of the other
parties to material  contracts of LabOne or its Subsidiaries are in violation of
or in default under (nor

                                       17

<PAGE>

does there exist any  condition  which upon the passage of time or the giving of
notice would cause such a violation  of or default  under) any  contract,  other
than such  violations  or defaults as would not have a LabOne  Material  Adverse
Effect.

         (j) Compliance with Applicable Laws.  LabOne and its Subsidiaries  hold
all permits, licenses, variances,  exemptions,  orders, franchises and approvals
of  all  Governmental  Entities  necessary  for  the  lawful  conduct  of  their
respective  businesses  (the "LabOne  Permits"),  except where the failure so to
hold  would  not  have  a  LabOne  Material  Adverse  Effect.   LabOne  and  its
Subsidiaries  are in compliance with the terms of LabOne  Permits,  except where
the failure so to comply would not have a LabOne Material Adverse Effect. Except
as disclosed or as set forth on Schedule 3.1(j),  3.1(k), 3.1(l), 3.1(m), 3.1(n)
or 3.1(o) of LabOne Letter,  the businesses of LabOne and its  Subsidiaries  are
not being conducted in violation of any law, ordinance,  regulation, judgment or
decree of any Governmental  Entity,  except for possible  violations which would
not have a LabOne  Material  Adverse  Effect.  Except as set  forth on  Schedule
3.1(j) of LabOne Letter,  as of the date of this Agreement,  no investigation or
review  by  any  Governmental  Entity  with  respect  to  LabOne  or  any of its
Subsidiaries is, to the best knowledge of LabOne,  pending or threatened,  other
than those the outcome of which would not have a LabOne Material Adverse Effect.

         (k) Litigation.  Schedule 3.1(k) of LabOne Letter  discloses all suits,
actions or proceedings pending, or, to, the best knowledge of LabOne, threatened
against LabOne or any Subsidiary of LabOne ("LabOne  Litigation") on the date of
this Agreement and all judgments, decrees,  injunctions,  rules or orders of any
Governmental  Entity or arbitrator  outstanding against LabOne or any Subsidiary
of LabOne ("LabOne Order") on the date of this Agreement,  in each case in which
the amount claimed or that could be involved is in excess of $100,000. Except as
disclosed on Schedule  3.1(k) of LabOne  Letter,  there is no LabOne  Litigation
that,  individually  or in the aggregate  with all other LabOne  Litigation,  is
reasonably  likely to have a LabOne Material  Adverse  Effect,  nor is there any
LabOne  Order  that,  individually  or in the  aggregate  with all other  LabOne
Litigation,  is reasonably  likely to have a LabOne Material Adverse Effect or a
material adverse effect on LabOne's ability to perform its obligations hereunder
or to consummate the transactions contemplated by this Agreement.

         (l) Taxes. With respect to any period and with respect to any action as
to which the applicable  statute of  limitations  has not expired as of the date
hereof,  and except as set forth on  Schedule  3.1(l) of the  LabOne  Letter and
except for  exceptions to the following that would not,  individually  or in the
aggregate, have a LabOne Material Adverse Effect:

                  (i)  LabOne  and  each of its  Subsidiaries  has (A)  duly and
         timely (taking into account any extensions)  filed all federal,  state,
         local,  foreign and other returns,  declarations,  reports,  estimates,
         information returns and statements

                                       18

<PAGE>

         ("Returns")  required  to be filed or sent by or with  respect to it in
         respect of any Taxes (as hereinafter defined),  other than consolidated
         or combined Returns that are required to be filed by Holdings  pursuant
         to the Tax Sharing Agreement (as hereinafter defined), (B) duly paid or
         deposited on a timely basis all Taxes (including  estimated Taxes) that
         are due and payable  (except for audit  adjustments not material in the
         aggregate or to the extent that  liability  therefor is reserved for in
         LabOne's most recent audited financial  statements) for which LabOne or
         any of its  Subsidiaries  may be liable,  except with  respect to Taxes
         covered by the Tax Sharing Agreement, (C) established reserves that are
         required  by GAAP for the  payment of all Taxes not yet due and payable
         with  respect  to  the  results  of   operations   of  LabOne  and  its
         Subsidiaries  through the date hereof, and (D) complied in all material
         respects with all applicable  laws,  rules and regulations  relating to
         the  withholding  of  Taxes  and has in all  material  respects  timely
         withheld from employee  wages and paid over to the proper  governmental
         authorities all amounts required to be so withheld and paid over.

                  (ii) Except as listed in Schedule 3.1(l) of the LabOne Letter,
         and except with  respect to Returns  files by Holdings  pursuant to the
         Tax  Sharing  Agreement,  (A)  there is no audit or  examination  being
         conducted by any tax authority  with respect to any Return of LabOne or
         any of its  Subsidiaries and (B) no extension or waiver of a statute of
         limitation  regarding  liability  for Taxes or the filing of any Return
         has been given or agreed to by LabOne or any of its  Subsidiaries  that
         has the effect of keeping  open a  statutory  limitations  period  that
         would otherwise now be closed.  Except to the extent being contested in
         good  faith  and  as   disclosed   in  Schedule   3.1(l),all   material
         deficiencies  for Taxes asserted as a result of an audit or examination
         conducted by any taxing  authority with respect to any Return of LabOne
         or  any of  its  Subsidiaries  have  been  paid  or  provided  for,  in
         accordance  with  GAAP,  in  LabOne's  most  recent  audited  financial
         statements  included  in the LabOne SEC  documents.  Except as provided
         for, in accordance with GAAP, in LabOne's most recent audited financial
         statements  included in the LabOne SEC  documents  and as  disclosed in
         Schedule  3.1(l) and except with  respect to Returns  filed by Holdings
         pursuant to the Tax Sharing Agreement,  no material  deficiency for any
         such Taxes has been proposed,  asserted,  or assessed against LabOne or
         any of its Subsidiaries by any federal,  state, local, foreign or other
         taxing authority with respect to any period.  Neither LabOne nor any of
         its  Subsidiaries  is a party to an  agreement  that  provides  for the
         payment  of any  amount  that would  constitute  an  "excess  parachute
         payment" within the meaning of Section 280G of the Code.

                  (iii) Neither  LabOne nor any of its  Subsidiaries  is a party
         to,  is  bound  by or has  any  obligation  under  any tax  sharing  or
         allocation  agreement or similar  agreement or arrangement,  except for
         that certain Tax Sharing Agreement among

                                       19

<PAGE>

         Holdings,  LabOne and certain  other  parties dated August 1, 1990 (the
         "Tax Sharing  Agreement").  All of the information  that has heretofore
         been  furnished  by  LabOne  or  any of its  Subsidiaries  to  Holdings
         relating to Taxes, in connection with the preparation of a consolidated
         tax return of the  consolidated  group  composed  of  Holdings  and its
         subsidiaries,  was when delivered true, accurate,  and complete, in all
         material respects,  (and, to the extent that such information reflected
         liability  for Taxes or any  component of such  liability  (such as the
         amount of income or deductions for a taxable period),  such information
         was prepared in  accordance  with the  applicable  law relating to such
         Taxes  or  other  items),  and  each  item of such  information  is now
         believed by LabOne to have been true,  accurate,  and complete,  in all
         material  respects,  as of the  date  thereof.  All  payments  that are
         required to have been made prior to the date hereof by LabOne or any of
         its Subsidiaries to Holdings pursuant to the Tax Sharing Agreement have
         been made,  and any payments  that are required to be made with respect
         to  periods  prior  to the  date  hereof,  but  not  due  until  a date
         subsequent  to the date hereof,  are  disclosed in Schedule  3.1(l) and
         LabOne  and  each of its  Subsidiaries  has  complied  in all  material
         respects  with all  provisions  of the Tax Sharing  Agreement  that are
         applicable to it.

         For  purposes of this  Agreement,  "Taxes"  means all  federal,  state,
local, foreign and other taxes, charges, fees, levies, imposts, duties, licenses
or  other  governmental  assessments,  together  with any  interest,  penalties,
additions to tax or  additional  amounts  imposed by any taxing  authority  with
respect thereto.

         (m)      Pension and Benefit Plans; ERISA.

                  (i) LabOne has made available to Holdings true,  correct,  and
         complete copies of each of the following which is sponsored, maintained
         or contributed to by LabOne or any of its  Subsidiaries for the benefit
         of the employees of LabOne or such Subsidiary:

                           (1) each  "employee  benefit  plan,"  as such term is
                  defined  in  Section  3(3)  of  the  United  States   Employee
                  Retirement  Income Security Act of 1974, as amended  ("ERISA")
                  (including,  but not limited to, employee benefit plans,  such
                  as foreign  plans,  which are not subject to the provisions of
                  ERISA) ("LabOne Plans"); and

                           (2)  each  personnel   policy,   stock  option  plan,
                  collective  bargaining  agreement,  bonus plan or arrangement,
                  incentive   award  plan  or  arrangement,   vacation   policy,
                  severance pay plan, policy or agreement, deferred compensation
                  agreement   or   arrangement,    executive   compensation   or
                  supplemental   income   arrangement,   consulting   agreement,
                  employment

                                       20

<PAGE>

                  agreement and each other  employee  benefit  plan,  agreement,
                  arrangement,  program,  practice or understanding which is not
                  described in Section 3.1(m)(i)(1) ("LabOne Benefit Programs").

                  (ii)  Except as  disclosed  in Schedule  3.1(m)(ii)  of LabOne
                        Letter:

                           (1) LabOne and its  Subsidiaries do not contribute to
                  or have an obligation  to  contribute  to, and have not at any
                  time within six years prior to the Effective Time  contributed
                  to or had an  obligation to  contribute  to, a multi  employer
                  plan within the meaning of Section 3(37) of ERISA;

                           (2) LabOne and its  Subsidiaries  have  substantially
                  performed  all  material   obligations,   whether  arising  by
                  operation of law or by  contract,  required to be performed by
                  them in  connection  with  LabOne  Plans  and  LabOne  Benefit
                  Programs,  and to the  knowledge  of LabOne there have been no
                  defaults  or  violations  by any other  party under the LabOne
                  Plans or LabOne  Benefit  Programs  that  would  have a LabOne
                  Material Adverse Effect;

                           (3) All  reports and  disclosures  relating to LabOne
                  Plans  required to be filed with or furnished to  governmental
                  agencies,  LabOne Plan participants or beneficiaries have been
                  filed or furnished substantially in accordance with applicable
                  law in a timely  manner,  except  where the  failure  to do so
                  would not have a LabOne Material Adverse Effect;

                           (4) Each LabOne Plan  intended to be qualified  under
                  Section 401 of the Code  satisfies  the  requirements  of such
                  Section and has received a favorable determination letter from
                  the Internal  Revenue Service  regarding such qualified status
                  and has  not,  since  receipt  of the  most  recent  favorable
                  determination  letter,  been  amended or, to the  knowledge of
                  LabOne,  operated, in a way which would reasonably be expected
                  to materially  adversely affect such qualified  status.  As to
                  any LabOne Plan intended to be qualified  under Section 401 of
                  the Code, there has been no termination or partial termination
                  of such LabOne Plan within the meaning of Section 411(d)(3) of
                  the Code;

                           (5) There  are no  actions,  suits or claims  pending
                  (other than routine  claims for benefits) or, to the knowledge
                  of LabOne,  threatened against, or with respect to, any of the
                  LabOne Plans or LabOne  Benefit  Programs or their assets that
                  could  reasonably  be  expected  to  have a  Material  Adverse
                  Effect. To the knowledge of LabOne, there is no matter pending
                  (other than routine qualification  determination filings) with
                  respect to any of the LabOne Plans before the Internal Revenue
                  Service ("IRS"),

                                       21

<PAGE>

                  the  United  States Department of Labor or the Pension Benefit
                  Guaranty Corporation ("PBGC");

                           (6) There are no LabOne Plans  subject to Title IV of
                  ERISA.;

                           (7) No act,  omission  or  transaction  has  occurred
                  which  would  result  in  imposition  on  LabOne or any of its
                  Subsidiaries  of (A) liability for a breach of fiduciary  duty
                  under  Section  409 of  ERISA,  (B) a civil  penalty  assessed
                  pursuant to subsection (c), (i) or (1) of Section 502 of ERISA
                  or (C) a tax  imposed  pursuant to Chapter 43 of Subtitle D of
                  the Code that, in any such case,  could reasonably be expected
                  to have a LabOne Material Adverse Effect;

                           (8) With respect to any employee benefit plan, within
                  the  meaning of Section  3(3) of ERISA,  which is not a LabOne
                  Plan but which is sponsored,  maintained or contributed to, or
                  has been  sponsored,  maintained or  contributed to within six
                  years prior to the Effective Time, by any corporation,  trade,
                  business  or entity  that is a  Subsidiary  of LabOne,  (A) no
                  withdrawal  liability,  within the meaning of Section  4201 of
                  ERISA, has been incurred,  which withdrawal  liability has not
                  been satisfied, (B) no liability to the PBGC has been incurred
                  by any  Subsidiary  of LabOne,  which  liability  has not been
                  satisfied,  (C) no accumulated funding deficiency,  whether or
                  not  waived,  within the  meaning  of Section  302 of ERISA or
                  Section  412 of the  Code  has  been  incurred,  and  (D)  all
                  contributions  (including  installments) to such plan required
                  by Section  302 of ERISA and Section 412 of the Code have been
                  timely made; and

                           (9) After taking into  account all consents  obtained
                  from  participants in LabOne Plans and LabOne Benefit Programs
                  referred to in Schedule 3.1(m),  the execution and delivery of
                  this  Agreement  and  the  consummation  of  the  transactions
                  contemplated  hereby will not (A) require LabOne or any of its
                  Subsidiaries to make a larger  contribution to, or pay greater
                  benefits under, any LabOne Plan or LabOne Benefit Program than
                  it otherwise  would, (B) create or give rise to any additional
                  or  accelerated  vested  rights or service  credits  under any
                  LabOne Plan or LabOne Benefit  Program,  or (C) accelerate the
                  vesting,  accrual or  exercisability of any benefits or rights
                  under any LabOne Plan or LabOne  Benefit  Program,  including,
                  without  limitation,  acceleration  of the date on  which  any
                  stock option(s) may first be exercised.


                  (iii) Except as disclosed  on Schedule  3.1(m)(iii)  of LabOne
         Letter,  there are no severance  agreements  or  employment  agreements
         between LabOne or any

                                       22

<PAGE>

         of its Subsidiaries and any employee of LabOne or such Subsidiary. True
         and correct copies of all such severance and employment agreements have
         been provided to Holdings.  Except as disclosed on Schedule 3.1(m)(iii)
         of LabOne Letter,  (A) neither LabOne nor any of its  Subsidiaries  has
         any  consulting  agreement  or  arrangement  with any person  involving
         annual  compensation  in excess of $100,000,  except as are  terminable
         without  penalty upon one month's  notice or less,  and (B) no stock or
         other security issued by LabOne or any of its Subsidiaries forms or has
         formed a  material  part of the  assets  of any  LabOne  Plan or LabOne
         Benefit Program.

         (n)      Labor Matters.

                  (i)  Except  as set  forth in  Schedule  3.1(n)(i)  of  LabOne
         Letter, as of the date of this Agreement, (1) no employees of LabOne or
         any of its Subsidiaries are represented by any labor organization;  (2)
         no labor  organization  or group of  employees  of LabOne or any of its
         Subsidiaries  has  made  a  pending  written  demand  or,  to  LabOne's
         knowledge, other form of demand, for recognition or certification,  and
         there are no representation  or certification  proceedings or petitions
         seeking a representation  proceeding presently pending or threatened in
         writing to be brought or filed with the National Labor  Relations Board
         or any other  labor  relations  tribunal or  authority;  and (3) to the
         knowledge  of  LabOne,  there are no  organizing  activities  involving
         LabOne or any of its Subsidiaries  pending with any labor  organization
         or group of employees of LabOne or any of its Subsidiaries.

                  (ii)  Except as set  forth on  Schedule  3.1(n)(ii)  of LabOne
         Letter,  LabOne and each of its  Subsidiaries is in compliance with all
         applicable  employment and labor laws and  regulations  relating to the
         employment  of labor,  including  all such laws and orders  relating to
         wages,  hours,  collective  bargaining,  discrimination,  civil rights,
         safety and health workers'  compensation and the collection and payment
         of withholding  and/or Social Security Taxes and similar Taxes,  except
         where the failure to comply  would not have a LabOne  Material  Adverse
         Effect.

         (o)  Intangible  Property.  To  LabOne's  knowledge,   LabOne  and  its
Subsidiaries  possess or have  adequate  rights to use all material  trademarks,
trade  names,  patents,  service  marks,  brand  marks,  brand  names,  computer
programs,   database,   industrial  designs,  trade  secrets,   technology,  and
copyrights  necessary for the operation of the  businesses of each of LabOne and
its Subsidiaries (collectively,  the "LabOne Intangible Property"), except where
the failure to possess or have adequate rights to use such properties  would not
reasonably be expected to have a LabOne Material Adverse Effect. Schedule 3.1(o)
of LabOne  Letter lists all material  patents and trademark  registrations  (and
applications for patents and trademark  registrations)  or licensing  agreements
that are  applicable  to a  material  portion of the  business  of LabOne or its
Subsidiaries. To the knowledge of LabOne, except as set forth on Schedule 3.1(o)
of LabOne Letter, all of

                                       23

<PAGE>

LabOne  Intangible  Property is owned or used by LabOne or its Subsidiaries free
and clear of any and all liens,  claims or  encumbrances,  except those that are
not reasonably  likely to have a LabOne  Material  Adverse  Effect,  and neither
LabOne nor any such  Subsidiary  has  forfeited  or otherwise  relinquished  any
LabOne  Intangible  Property which  forfeiture would result in a LabOne Material
Adverse  Effect.  To the  knowledge  of  LabOne,  the use of  LabOne  Intangible
Property  by  LabOne or its  Subsidiaries  does not,  in any  material  respect,
conflict  with,  infringe  upon,  violate or  interfere  with or  constitute  an
appropriation  of any valid  right,  title,  interest  or  goodwill,  including,
without  limitation,  any intellectual  property right,  trademark,  trade name,
patent,  service  mark,  brand mark,  brand name,  computer  program,  database,
industrial design,  copyright or any pending  application  therefor of any other
person and there have been no claims  made,  and  neither  LabOne nor any of its
Subsidiaries has received any notice of any claim or otherwise  knows,  that any
of LabOne  Intangible  Property is invalid or conflicts with the asserted rights
of any other  person or has not been used or  enforced  or has been failed to be
used or enforced in a manner that would result in the abandonment,  cancellation
or  unenforceability of any of LabOne Intangible  Property,  except for any such
conflict, infringement, violation, interference, claim, invalidity, abandonment,
cancellation or unenforceability that would not reasonably be expected to have a
LabOne Material Adverse Effect.

         (p)      Environmental Matters.

                  For purposes of this Agreement:

                           (A)  "Environmental  Law"  means any  applicable  law
                  regulating  or  prohibiting  Releases  into  any  part  of the
                  natural  environment,  or  pertaining  to  the  protection  of
                  natural  resources,  the  environment  and public and employee
                  health  and  safety   including,   without   limitation,   the
                  Comprehensive   Environmental  Response,   Compensation,   and
                  Liability Act ("CERCLA") (42 U.S.C. Section 9601 et seq.), the
                  Hazardous  Materials  Transportation  Act (49 U. S. C. Section
                  1801 et seq.), the Resource  Conservation and Recovery Act (42
                  U.S.C.  Section 6901 et seq.),  the Clean Water Act (33 U.S.C.
                  Section  1251 et seq.),  the Clean Air Act (33 U.S.C.  Section
                  7401 et seq.),  the Toxic  Substances  Control  Act (15 U.S.C.
                  Section 7401 et seq.), the Federal Insecticide, Fungicide, and
                  Rodenticide  Act (7  U.S.C.  Section  136 et  seq.),  and  the
                  Occupational  Safety and Health Act (29 U.S.C.  Section 651 et
                  seq.)  ("OSHA")  and  the  regulations   promulgated  pursuant
                  thereto, and any such applicable state or local statutes,  and
                  the regulations  promulgated  pursuant  thereto,  as such laws
                  have  been and may be  amended  or  supplemented  through  the
                  Closing Date;

                           (B)   "Hazardous   Material"   means  any  substance,
                  material  or waste which is  regulated,  or which could be the
                  subject of Remedial Action,  pursuant to any Environmental Law
                  by any public or governmental

                                       24

<PAGE>

                  authority in the  jurisdictions  in which the applicable party
                  or its Subsidiaries  conducts business,  or the United States,
                  including, without limitation, any material or substance which
                  is  defined  as a  "hazardous  waste,"  "hazardous  material,"
                  "hazardous   substance,"   ("extremely   hazardous  waste"  or
                  "restricted  hazardous  waste,"  "pollutant,"  "contaminants,"
                  "toxic  waste" or "toxic  substance"  under any  provision  of
                  Environmental Law;

                           (C)  "Release"  means any release,  spill,  effluent,
                  emission,  leaking,  pumping,  injection,  deposit,  disposal,
                  discharge,  dispersal,  leaching or  migration  of a regulated
                  quantity of Hazardous  Material into the outdoor  environment,
                  or into or out of any  property  owned,  operated or leased by
                  the applicable party or its Subsidiaries; and

                           (D) "Remedial  Action" means all actions with respect
                  to a regulated  quantity of  Hazardous  Materials,  including,
                  without limitation,  any capital  expenditures,  required by a
                  governmental  entity or required under any Environmental  Law,
                  or voluntarily  undertaken to (I) clean up, remove,  treat, or
                  in any other  way  ameliorate  the  Release  of any  Hazardous
                  Materials in the outdoor environment; (II) prevent the Release
                  or threat of Release,  or minimize the further  Release of any
                  Hazardous  Material  so it does not  endanger  or  threaten to
                  endanger the public health or welfare of the indoor or outdoor
                  environment;    (III)   perform   pre-remedial   studies   and
                  investigations or post-remedial monitoring and care pertaining
                  or relating to a Release;  or (IV) bring the applicable  party
                  into compliance with any Environmental Law.

                  (i) Except as disclosed on Schedule  3.1(p) of LabOne  Letter,
         the  operations  of  LabOne  and its  Subsidiaries  have  been  and are
         currently in compliance with all  Environmental  Laws, except where the
         failure to so comply would not  reasonably be expected to have a LabOne
         Material Adverse Effect.

                  (ii) Except as disclosed on Schedule  3.1(p) of LabOne Letter,
         LabOne and its  Subsidiaries  have obtained and  maintained all permits
         required  under  applicable   Environmental   Laws  for  the  continued
         operations of their respective businesses, except such permits the lack
         of which would not  reasonably  be  expected to have a LabOne  Material
         Adverse Effect.

                  (iii) Except as disclosed on Schedule 3.1(p) of LabOne Letter,
         as of the date hereof  LabOne and its  Subsidiaries  are not subject to
         any material  (individually  or in the aggregate)  outstanding  written
         orders or  material  contracts  with any  Governmental  Entity or other
         person respecting (A) Environmental Laws,

                                       25

<PAGE>

         (B)  Remedial  Action or (C) any  Release  or  threatened  Release of a
         Hazardous Material.

                  (iv) Except as disclosed on Schedule  3.1(p) of LabOne Letter,
         LabOne and its Subsidiaries have not received any written communication
         alleging,  with respect to any such party,  and has no knowledge of the
         violation of or liability under any Environmental  Law, which violation
         or liability  would  reasonably  be expected to have a LabOne  Material
         Adverse Effect.

                  (v) Except as disclosed on Schedule  3.1(p) of LabOne  Letter,
         neither LabOne nor any of its Subsidiaries has any contingent liability
         in  connection  with any Release of any Hazardous  Material  including,
         without  limitation,  in connection  with the exposure of any person or
         property to Hazardous  Material  that would  reasonably  be expected to
         have a LabOne Material Adverse Effect.

                  (vi) Except as disclosed on Schedule  3.1(p) of LabOne Letter,
         the operations of LabOne or its Subsidiaries  involving the generation,
         transportation,  treatment,  storage or disposal of hazardous waste, as
         defined and  regulated  under 40 C.F.R.  Parts 260-270 (in effect as of
         the date of this  Agreement)  or any  state  equivalent,  or any  other
         Hazardous  Material are in  compliance  with  applicable  Environmental
         Laws,  except  where the failure to so comply would not  reasonably  be
         expected to have a LabOne Material Adverse Effect.

                  (vii) Except as disclosed on Schedule 3.1(p) of LabOne Letter,
         to the  knowledge of LabOne as of the date hereof,  there is not now on
         or in any property of LabOne or its  Subsidiaries any of the following:
         (A) any  underground  storage  tanks or surface  impoundments,  (B) any
         asbestos-containing  materials,  or (C) any polychlorinated  biphenyls,
         any of which ((A), (B) or (C) preceding)  could  reasonably be expected
         to have a LabOne Material Adverse Effect. To the knowledge of LabOne as
         of the date hereof,  none of the properties owned or operated by LabOne
         are restricted as to use or as to transfer of title,  or the subject of
         any special recorded notice, under any Environmental Law.

                  (viii)  LabOne has made  available  to Holdings for review all
         written reports of  environmental  audits and assessments  prepared for
         LabOne or any of its Subsidiaries  within the last three years by third
         party consultants or internal environmental, safety or health personnel
         which are in the  possession  or control of LabOne and which  relate to
         the assets or operations of LabOne or any of its Subsidiaries.

         (q) Opinion of Financial  Advisor.  The Special  Committee has received
the  opinion  of U.S.  Bancorp  Piper  Jaffray  Inc.  (a copy of  which  will be
delivered  to  Holdings),  to the  effect  that,  as of  the  date  hereof,  the
consideration to be received by the

                                       26

<PAGE>

holders of LabOne Common Stock,  other than Holdings,  officers and directors of
Holdings  and  beneficial  owners  of 10% or more of the  outstanding  shares of
Holdings  Common Stock (such  holders after such  exclusions  are referred to as
"Unaffiliated  LabOne  Stockholders)  pursuant to this  Agreement is fair from a
financial point of view to the Unaffiliated LabOne Stockholders.

         (r) Vote Required. Except as provided in the second sentence of Section
6.1(a)(i) of this Agreement,  the affirmative  vote of the holders of a majority
of the shares of LabOne Common Stock outstanding is the only vote of the holders
of any class or series  of  LabOne  capital  stock  necessary  to  approve  this
Agreement and the transactions contemplated hereby.

         (s) Insurance.  LabOne has delivered to Holdings an insurance  schedule
of LabOne's and each of its Subsidiaries' (i) directors' and officers' liability
insurance,  and (ii) primary and excess casualty insurance  policies,  providing
coverage  for bodily  injury and  property  damage to third  parties,  including
products liability and completed operations coverage, and worker's compensation,
in each  case in  effect  as of the  date  hereof.  LabOne  maintains  insurance
coverage  reasonably  adequate  for the  operation of the business of LabOne and
each of its Subsidiaries  (taking into account the cost and availability of such
insurance),  and  the  transactions  contemplated  hereby  will  not  materially
adversely affect such coverage.

         (t) Brokers.  Except as disclosed on Schedule  3.1(t) of LabOne Letter,
no broker,  investment  banker,  or other  person is entitled  to any  broker's,
finder's or other similar fee or commission in connection with the  transactions
contemplated by this Agreement based upon  arrangements  made by or on behalf of
LabOne.

         (u) Title. Except as disclosed in financial  statements included in the
LabOne SEC Documents or on Schedule 3.1(u) of LabOne Letter,  LabOne and each of
its  Subsidiaries  have good and marketable  title to all real property and good
title to all personal property owned by them, in each case free and clear of all
liens,  pledges or encumbrances  securing money borrowed,  the deferred purchase
price of property in excess of $300,000 or capital  leases and free and clear of
all other liens, pledges, encumbrances or defects that could affect the value or
use thereof,  except for any such other liens, pledges,  encumbrances or defects
that would not have a LabOne Material Adverse Effect.

         (v) Books and Records.  LabOne and its  Subsidiaries  (i) make and keep
accurate books and records and (ii) maintain internal  accounting controls which
provide  reasonable  assurance that (A)  transactions are executed in accordance
with management's  authorization,  (B) transactions are recorded as necessary to
permit preparation of their financial statements and to maintain  accountability
for their  assets,  (C) access to their assets is permitted  only in  accordance
with management's  authorization and (D) the reported  accountability  for their
assets is compared with existing assets at reasonable

                                       27

<PAGE>

intervals,  except for any  inaccuracy  or inadequacy of controls that would not
reasonably be expected to have a LabOne Material Adverse Effect.

         (w) Certain Payments.  Neither LabOne nor any of its Subsidiaries,  nor
any director, officer, agent, employee or other person associated with or acting
on behalf of the LabOne or any of its Subsidiaries, has used any corporate funds
for any unlawful  contribution,  gift,  entertainment  or other unlawful expense
relating to political activity;  made any direct or indirect unlawful payment to
any foreign or domestic  governmental official or employee from corporate funds;
violated  or is in  violation  of any  provision  of the United  States  Foreign
Corrupt  Practices  Act of 1977;  nor made any illegal  bribe,  rebate,  payoff,
influence  payment,  kickback  or other  unlawful  payment,  except for any such
expenses, payments or violations that would not reasonably be expected to have a
LabOne Material Adverse Effect.

         (x) Transactions with Related Parties.  Except as set forth in Schedule
3.1(x) of LabOne Letter or in the LabOne SEC Documents, there are no agreements,
contracts or other  arrangements  between (i) LabOne or any of its Subsidiaries,
on the one hand, and (ii) any Related  Person (as defined  below) of LabOne,  on
the other  hand.  Except as set forth in  Schedule  3.1(x) of LabOne  Letter and
except for the  ownership  of the  Surviving  Corporation  Common  Stock  issued
hereunder,  as of the  Closing  Date no Related  Person of LabOne and no present
officer or director of any Related  Person of LabOne  shall have any interest in
any property  (real or personal,  tangible or intangible) or contract used in or
pertaining  to the  business of LabOne and its  Subsidiaries  (or the  Surviving
Corporation and its Subsidiaries) and no Related Person of LabOne shall have any
direct or indirect ownership interest (excluding immaterial passive investments)
in any person (other than through LabOne or any of its Subsidiaries)  with which
LabOne or any of its  Subsidiaries  competes  in any  material  respect or has a
material  business  relationship.  Other than those  services  described  in the
LabOne SEC Documents, Schedule 3.1(x) of LabOne letter sets forth as of the date
of this Agreement a description  of all services  provided by any Related Person
of LabOne or LabOne  and any of its  Subsidiaries.  A  "Related  Person"  of any
person shall mean any holder of in excess of 5% of the equity securities of such
person and any  affiliates  or  associates  (as  defined in Rule 12b-2 under the
Exchange  Act)  of  such  holder  (other  than  such  original   person  or  its
Subsidiaries).

         (y) State  Takeover  Laws.  LabOne  has taken all  necessary  action to
exempt the  transactions  contemplated  by this Agreement from the provisions of
Section 203 of the Delaware Law.

         (z) Nature of Election by Certain Affiliates.  Each of William D. Grant
and W. Thomas Grant II has represented to LabOne that he intends to make a Stock
Election  with respect to any shares of LabOne  Common Stock that he owns at the
Effective Time.

                                       28

<PAGE>

         3.2 Representations and Warranties of Holdings. Holdings represents and
warrants to LabOne as follows:

         (a)  Organization,  Standing and Power.  Holdings is a corporation duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction of the State of Missouri,  has all requisite power and authority to
own,  lease and operate its properties and to carry on its business as now being
conducted,  and is duly  qualified  and in good  standing to do business in each
jurisdiction in which the business it is conducting, or the operation, ownership
or leasing of its properties,  makes such qualification necessary, other than in
such  jurisdictions  where the  failure  to  qualify  would not have a  Holdings
Material Adverse Effect (as defined below). Holdings has heretofore delivered to
LabOne complete and correct copies of Holdings's  Articles of Incorporation  and
Bylaws.  As  used  in this  Agreement  "Holdings  Material  Adverse  Effect"  or
"Holdings  Material  Adverse  Change"  shall mean any effect or change  that is,
individually  or  in  the  aggregate,   materially   adverse  to  the  business,
operations,  assets,  condition (financial or otherwise) or results of operation
of Holdings except for general  economic changes and changes that may affect the
industries of Holdings generally.

         (b) Capital  Structure.  As of the date hereof,  the authorized capital
stock of Holdings  consists of 24,000,000  shares of Holdings Common Stock,  par
value $1.00 per share,  and 3,000,000 shares of preferred stock, par value $1.00
per share  ("Holdings  Preferred  Stock").  At the close of business on the date
hereof:   (i)  6,489,103   shares  of  Holdings  Common  Stock  are  issued  and
outstanding, an aggregate of 90,000 shares of Holdings Common Stock are reserved
for issuance  pursuant to the  Holdings  Stock  Option  Plan,  40,000  shares of
Holdings  Common Stock are issuable  pursuant to outstanding  and unvested stock
options granted  pursuant to the Holdings Stock Option Plan and 20,000 shares of
Holdings  Common Stock are  issuable  pursuant to  outstanding  and vested stock
options  granted  pursuant to the Holdings Stock Option Plan;  (ii) no shares of
Holdings  Preferred  Stock  are  issued  and  outstanding;  and  (iii) no bonds,
debentures, notes or other indebtedness having the right to vote (or convertible
into  securities  having  the right to vote) on any  matters  on which  Holdings
stockholders may vote ("Holdings  Voting Debt") are issued or outstanding.  From
the date hereof until the  Effective  Time,  no  additional  shares,  options or
similar  rights  will be  issued  or  authorized  other  than  shares  issued in
connection  with  options  which were  outstanding  and vested (or which vest in
accordance  with their  original  terms as in effect on the close of business on
the date hereof ) pursuant to the Holdings Stock Option Plan as in effect on the
close of business on the date hereof.  Assuming the  Effective  Date is prior to
July 31, 1999, no options or similar rights that were not vested at the close of
business on the date hereof will vest prior to the Effective Time (other than in
the case of the death of a holder of such option or as otherwise provided in the
Holdings Stock Option Plan).  All  outstanding  shares of Holdings  Common Stock
have been duly authorized,  are validly issued, fully paid and nonassessable and
are not  subject to  preemptive  rights,  and,  subject to the  approval of this
Agreement  and the Merger,  all shares of  Surviving  Corporation  Common  Stock
issuable in the Merger will

                                       29

<PAGE>

be duly  authorized  and, when issued,  will be validly  issued,  fully paid and
non-assessable  and free of preemptive  rights.  Except as set forth on Schedule
3.2(b) of the  letter  dated and  delivered  to LabOne on the date  hereof  (the
"Holdings Letter"), which relates to this Agreement and is designated therein as
being the Holdings  Letter,  all  outstanding  shares of capital stock of LabOne
that  are  owned  by  Holdings  are  free  and  clear  of  all  liens,  charges,
encumbrances,  claims  and  options of any  nature.  Except as set forth in this
Section  3.2(b) or on  Schedule  3.2(b) of the  Holdings  Letter  and except for
changes resulting from the exercise of employee stock options outstanding on the
date  hereof  granted  pursuant  to  the  Holdings  Stock  Option  Plan,  or  as
contemplated by this Agreement there are  outstanding:  (i) no shares of capital
stock,  Holdings  Voting Debt or other voting  securities  of Holdings;  (ii) no
securities of Holdings  convertible  into or exchangeable  for shares of capital
stock, Holdings Voting Debt or other voting securities of Holdings; and (iii) no
options,  warrants, calls, rights (including preemptive rights),  commitments or
agreements  to  which  Holdings  is a party  or by which it is bound in any case
obligating Holdings to issue,  deliver,  sell,  purchase,  redeem or acquire, or
cause to be issued, delivered, sold, purchased, redeemed or acquired, additional
shares of capital stock or any Holdings  Voting Debt or other voting  securities
of  Holdings,  or  obligating  Holdings to grant,  extend or enter into any such
option,  warrant, call, right,  commitment or agreement.  Except as set forth on
Schedule  3.2(b) of the Holdings  Letter,  there are no stockholder  agreements,
registration rights, voting trusts or other similar agreements or understandings
to which  Holdings  is a party or by which it is  bound.  Except as set forth on
Schedule 3.2(b) of the Holdings Letter,  there are no restrictions on Holdings's
ability  to vote the stock of  LabOne  held by  Holdings.  To the  knowledge  of
Holdings, as of the date of this Agreement, except for William D. Grant, Wallace
R.  Weitz &  Company  and a group  consisting  of  American  Century  Investment
Management,  Inc. and American Century Capital Portfolios,  Inc., no stockholder
of Holdings or "group"  within the meaning of Section  13(d)(3) of the  Exchange
Act will be immediately  after the Effective  Time the beneficial  owner of more
than 10% of the then outstanding Surviving Corporation Common Stock.

         (c) Non-Subsidiaries  Equity Investment.  Holdings has no Subsidiaries.
Schedule  3.2(c)  of the  Holdings  Letter  sets  forth  the book  value of each
investment by Holdings in the voting securities,  partnership interests or other
equity  interests of any  corporation,  partnership  or other entity (other than
LabOne  and its  Subsidiaries)  and the  nature  and  percentage  of  Holdings's
ownership  interests in such investment.  Except as set forth in Schedule 3.2(c)
of the Holdings Letter,  the voting securities,  partnership  interests or other
equity interests of Holdings in such investments are owned free and clear of all
liens,  charges and  encumbrances  and none of such  entities is a Subsidiary of
Holdings.

         (d)      Authority; No Violations; Consents and Approvals.

                  (i) The Board of Directors of Holdings has, by unanimous  vote
         of the directors,  approved and declared to be in the best interests of
         the stockholders of

                                       30

<PAGE>

         Holdings the Articles  Amendment (as defined below),  the Merger,  this
         Agreement and the amendments to the Existing  Articles of Incorporation
         and Existing Bylaws of Holdings  provided in the Certificate of Merger.
         Holdings has all requisite  corporate power and authority to enter into
         this  Agreement  and,  subject,  with  respect to  consummation  of the
         Merger,  to  approval  of  the  amendment  to  Holdings's  Articles  of
         Incorporation set forth in Exhibit E (the "Articles  Amendment") and to
         approval  of this  Agreement  and the  Merger  by the  stockholders  of
         Holdings  in  accordance  with the  Missouri  Law,  to  consummate  the
         transactions  contemplated  hereby.  The execution and delivery of this
         Agreement and the consummation of the transactions  contemplated hereby
         have been duly authorized by all necessary corporate action on the part
         of Holdings,  subject to approval of this  Agreement  and the Merger by
         the  stockholders of Holdings in accordance with the Missouri Law. This
         Agreement  has been  duly  executed  and  delivered  by  Holdings  and,
         subject, with respect to consummation of the Merger, to approval of the
         Articles  Amendment and to approval of this Agreement and the Merger by
         the  stockholders of Holdings in accordance with the Missouri Law, and,
         assuming this Agreement constitutes the valid and binding obligation of
         LabOne,   constitutes  a  valid  and  binding  obligation  of  Holdings
         enforceable in accordance with its terms, except to the extent that the
         enforcement  of  this  Agreement  may be  limited  by  (i)  bankruptcy,
         insolvency,  reorganization,  moratorium  or other  similar laws now or
         hereafter in effect relating to creditors' rights  generally,  and (ii)
         general  principles of equity  regardless of whether  enforceability is
         considered in a proceeding in equity or at law.

                  (ii)  Except as set forth on Schedule  3.2(d) of the  Holdings
         Letter,  the execution and delivery of this Agreement does not, and the
         consummation  of the  transactions  contemplated  hereby and compliance
         with the  provisions  hereof will not,  conflict with, or result in any
         violation of, or default  (with or without  notice or lapse of time, or
         both) under,  or give rise to a right of  termination,  cancellation or
         acceleration  of any  obligation  or to the loss of a material  benefit
         under, or result in the creation of any lien, security interest, charge
         or encumbrance  upon any of the properties or assets of Holdings under,
         any  provision  of (i) the  Articles  of  Incorporation  or  Bylaws  of
         Holdings,  (ii) any loan or credit agreement,  note, bond, mortgage, or
         indenture   applicable   to  Holdings,   (iii)  any  other   agreement,
         instrument,  permit,  concession,  franchise or license  applicable  to
         Holdings or (iv) assuming the consents,  approvals,  authorizations  or
         permits and filings or notifications referred to in Section 3.2(d)(iii)
         are duly and timely obtained or made and the approval of this Agreement
         and the Merger by the  stockholders  of Holdings  has been  obtained in
         accordance  with Missouri Law, any judgment,  order,  decree,  statute,
         law, ordinance, rule or regulation applicable to Holdings or any of its
         properties or assets, other than, in the case of clause (iii), any such
         conflicts,  violations,  defaults,  rights,  liens, security interests,
         charges or encumbrances that,  individually or in the aggregate,  would
         not have a Holdings Material Adverse

                                       31

<PAGE>

         Effect,  materially  impair the  ability  of  Holdings  to perform  its
         obligations  hereunder  or  prevent  the  consummation  of  any  of the
         transactions contemplated hereby.

                  (iii) No  consent,  approval,  order or  authorization  of, or
         registration,   declaration   or  filing  with,   or  permit  from  any
         Governmental  Entity is  required  by or with  respect to  Holdings  in
         connection  with  the  execution  and  delivery  of this  Agreement  by
         Holdings  or  the   consummation   by  Holdings  of  the   transactions
         contemplated  hereby,  as to which the  failure to obtain or make would
         have a Holdings  Material  Adverse  Effect,  except for: (A) the filing
         with the SEC of a proxy  statement in preliminary  and definitive  form
         relating  to the  meeting  of  Holdings's  stockholders  to be  held in
         connection  with the  approval  of this  Agreement  and the  Merger  by
         stockholders of Holdings,  the S-4, such reports under Section 13(a) of
         the Exchange Act and such other  compliance with the Securities Act and
         the Exchange  Act and the rules and  regulations  thereunder  as may be
         required  in  connection  with  this  Agreement  and  the  transactions
         contemplated  hereby,  and the obtaining from the SEC of such orders as
         may be so required; (B) filings with, and approval of, the Nasdaq Stock
         Market;  (C) such  filings  and  approvals  as may be  required  by any
         applicable   state   securities,   "blue  sky"  or  takeover  laws,  or
         environmental  laws; and (D) the filing of the  Certificate or Articles
         of Merger with the  Secretary  of State of the States of  Delaware  and
         Missouri.

         (e) SEC  Documents.  Holdings  has made  available to LabOne a true and
complete copy of each quarterly,  annual or current report on Form 10-Q, 10-K or
8-K,  registration  statement and definitive  proxy  statement filed by Holdings
with the SEC since  January 1, 1994,  which are all the  documents  (other  than
preliminary  material)  that  Holdings  was  required to file with the SEC since
January 1, 1994.  Holdings  will make  available to LabOne,  a true and complete
copy of each  quarterly,  annual or current  report on Form  10-Q,  10-K or 8-K,
registration statement and definitive proxy statement filed by Holdings with the
SEC  subsequent to the date of this  Agreement and prior to the Effective  Time.
All of such reports and statements filed prior to the date of this Agreement are
hereinafter  referred to as the "Holdings SEC Documents." As of their respective
filing dates (or if amended or  superseded by a filing prior to the date hereof,
then on the date of such  filing),  the Holdings SEC  Documents  complied in all
material  respects with the  requirements  of the Securities Act or the Exchange
Act,  as the case may be, and the rules and  regulations  of the SEC  thereunder
applicable  to such  Holdings  SEC  Documents,  and,  assuming  the  accuracy of
information  supplied by LabOne for inclusion therein,  none of the Holdings SEC
Documents  contained any untrue statement of a material fact or omitted to state
a  material  fact  required  to be  stated  therein  or  necessary  to make  the
statements  therein,  in light of the circumstances  under which they were made,
not misleading. As of their respective filing dates (or if amended or superseded
by a filing  prior to the date  hereof,  then on the date of such  filing),  the
financial statements of Holdings included in

                                       32

<PAGE>

the Holdings SEC Documents complied as to form in all material respects with the
published rules and regulations of the SEC with respect  thereto,  were prepared
in  accordance  with GAAP  applied on a  consistent  basis  during  the  periods
involved (except (i) as may be indicated in the notes thereto,  (ii) in the case
of the unaudited  statements,  such  differences in presentation or omissions as
permitted  by Rule 10-01 of  Regulation  S-X of the SEC and (iii) the  unaudited
financial  statements  do not  contain  all notes  required  by GAAP) and fairly
presented in accordance  with applicable  requirements of GAAP (subject,  in the
case of the unaudited  statements,  to normal  year-end  adjustments  on a basis
comparable with past periods) the  consolidated  financial  position of Holdings
and  its  consolidated  subsidiaries  as  of  their  respective  dates  and  the
consolidated  results of operations and the consolidated  cash flows of Holdings
and its consolidated subsidiaries for the periods presented therein.

         (f) Information Supplied. Assuming the accuracy of information supplied
by LabOne for  inclusion  therein,  none of the  information  supplied  or to be
supplied by Holdings  for  inclusion  or  incorporation  by reference in the S-4
will, at the time the S-4 becomes  effective  under the Securities Act or at the
Effective Time, contain any untrue statement of a material fact or omit to state
any  material  fact  required  to be stated  therein  or  necessary  to make the
statements therein not misleading, and none of the information supplied or to be
supplied by Holdings  and  included or  incorporated  by  reference in the Proxy
Statement will, at the time of mailing thereof or at the time of the meetings of
the  stockholders of Holdings or LabOne to be held in connection with the Merger
or at the  Effective  Time,  contain any untrue  statement of a material fact or
omit to state any material  fact  required to be stated  therein or necessary in
order to make the statements  therein, in light of the circumstances under which
they are made,  not  misleading.  If at any time prior to the Effective Time any
event with respect to Holdings, or with respect to other information supplied by
Holdings  for  inclusion  in the Proxy  Statement  or S-4,  shall occur which is
required to be  described  in an  amendment  of, or a  supplement  to, the Proxy
Statement or the S-4,  such event shall be so described,  and such  amendment or
supplement  shall  be  promptly  filed  with the SEC and,  as  required  by law,
disseminated to the  stockholders of Holdings and LabOne.  The S-4 and the Proxy
Statement,  insofar as they relate to Holdings or other information  supplied by
Holdings for inclusion therein,  will comply as to form in all material respects
with  the  provisions  of  the  Exchange  Act  and  the  rules  and  regulations
thereunder.

         (g) Absence of Certain  Changes or Events.  Except as disclosed  in, or
reflected in the financial  statements included in the Holdings SEC Documents or
on Schedule  3.2(g) of the Holdings  Letter,  or except as  contemplated by this
Agreement,  since  September 30, 1998,  Holdings has, in all material  respects,
conducted its business only in the ordinary  course and there has not been:  (i)
any declaration,  setting aside or payment of any dividend or other distribution
(whether in cash,  stock or property) with respect to any of Holdings's  capital
stock,  other than  regularly  quarterly  cash  dividends  consistent  with past
practice and except that, in connection with its approval of this Agreement, the
Board of Directors

                                       33

<PAGE>

of  Holdings  has  declared  a  stock  split  payable  as a  dividend  so  that,
immediately  prior to the Effective Time,  each issued and outstanding  share of
Holdings  Common  Stock shall be  automatically  converted  into  (assuming  the
effectiveness  of the Merger) 1.50 shares (the "Stock Split") of validly issued,
fully paid and nonassessable shares of Holdings Common Stock (with the resulting
number of shares  of each  registered  holder of  Holdings  Common  Stock  being
rounded down to the nearest  whole number and with each such  registered  holder
being  entitled  to  receive  in lieu of any  fractional  shares  prior  to such
rounding down an amount in cash (without interest) equal to an amount determined
in a manner provided in Section 4.2(l);  (ii) any amendment of any material term
of any outstanding equity security of Holdings; (iii) any repurchase, redemption
or other  acquisition by Holdings of any outstanding  shares of capital stock or
other equity securities of, or other ownership interests in, Holdings;  (iv) any
material  change in any method of accounting or accounting  practice,  or in any
tax method,  principle,  election or practice by Holdings;  (v) if the covenants
and  agreements  with  respect to the Holdings set forth in Section 4.2 had been
applicable to Holdings  during the period from September 30, 1998 to the date of
this Agreement, any action, transaction, commitment or failure to act that would
cause Holdings to fail to comply with such covenants and agreements; or (vi) any
other  action,  transaction,  commitment,  dispute or other  event or  condition
(financial or otherwise) of any character (whether or not in the ordinary course
of  business)  that has had, or may  reasonably  be expected to have, a Holdings
Material Adverse Effect.

         (h) No Undisclosed Material  Liabilities.  Except as fully reflected or
reserved  against in the  financial  statements  included  in the  Holdings  SEC
Documents,  or disclosed in the  footnotes  thereto,  or referred to in Schedule
3.2(h) or elsewhere in the Holdings  Letter,  as of the date hereof Holdings has
no  liabilities,   absolute  or  contingent   other  than   liabilities   which,
individually or in the aggregate, are reasonably expected not to have a Holdings
Material Adverse Effect. Except as so reflected, reserved or disclosed, Holdings
has no  commitments  which,  individually  or in the  aggregate,  are reasonably
expected to have a Holdings Material Adverse Effect.

         (i) Material Contracts;  No Defaults.  All of the material contracts of
Holdings  that are required to be described in the Holdings SEC  Documents or to
be filed as exhibits thereto, or that would be required to be described or filed
if a Form 10-K with  respect to Holdings  were  required to be filed on the date
hereof,  have been  described or filed in the Holdings SEC  Documents  except as
disclosed  on  Schedule  3.2(i)  of  the  Holdings  Letter.  Holdings  is not in
violation nor in default under (and no event has occurred which,  with notice or
the lapse of time or both, would constitute a default or violation) of any term,
condition  or  provision  of (i) its  Articles  of  Incorporation  and Bylaws or
comparable organizational documents, (ii) except as disclosed in Schedule 3.2(i)
of the Holdings Letter, any note, bond, mortgage,  indenture, license, agreement
or other  instrument or obligation to which  Holdings is now a party or by which
Holdings  or any of its  properties  or assets  may be bound or (iii) any order,
writ,  injunction,  decree,  statute, rule or regulation applicable to Holdings,
except in the case of (ii) and (iii) for defaults or

                                       34

<PAGE>

violations  which in the aggregate  would not have a Holdings  Material  Adverse
Effect.  Schedule  3.2(i)  of  the  Holdings  Letter  lists  each  contract  (a)
containing  covenants  which in any way purport to limit the freedom of Holdings
to engage in any line of business or engage in business in any  geographic  area
or to  compete  with  any  person  or (b) that  imposes  a  material  obligation
(contingent  or  otherwise)  that is not  reflected in  Holdings's  audited GAAP
financial  statements  and notes  thereto  included in its most  recently  filed
Annual  Report on Form  10-K.  Except as  disclosed  on  Schedule  3.2(i) of the
Holdings  Letter,  to the  knowledge of Holdings,  none of the other  parties to
material contracts of Holdings are in violation of or in default under (nor does
there exist any condition which upon the passage of time or the giving of notice
would cause such a violation of or default under) any contract,  other than such
violations or defaults as would not have a Holdings Material Adverse Effect.

         (j)  Compliance  with  Applicable  Laws.  Holdings  holds all  permits,
licenses,  variances,  exemptions,  orders,  franchises  and  approvals  of  all
Governmental  Entities  necessary  for the lawful  conduct of its business  (the
"Holdings  Permits"),  except  where  the  failure  so to hold  would not have a
Holdings  Material  Adverse Effect.  Holdings is in compliance with the terms of
the  Holdings  Permits,  except  where the failure so to comply would not have a
Holdings  Material  Adverse  Effect.  Except  as  disclosed  or as set  forth on
Schedule 3.2(j), 3.2(k), 3.2(l), 3.2(m), 3.2(n) or 3.2(p) of the Holdings Letter
the  business  of  Holdings  is not being  conducted  in  violation  of any law,
ordinance, regulation, judgment or decree of any Governmental Entity, except for
possible  violations  which would not have a Holdings  Material  Adverse Effect.
Except as set forth on Schedule 3.2(j) of the Holdings Letter, as of the date of
this  Agreement,  no  investigation  or review by any  Governmental  Entity with
respect  to  Holdings  is,  to  the  best  knowledge  of  Holdings,  pending  or
threatened,  other  than those the  outcome  of which  would not have a Holdings
Material Adverse Effect.

         (k) Litigation.  Schedule  3.2(k) of the Holdings Letter  discloses all
suits,  actions or proceedings  pending, or, to, the best knowledge of Holdings,
threatened  against  Holdings  ("Holdings  Litigation")  on  the  date  of  this
Agreement  and all  judgments,  decrees,  injunctions,  rules or  orders  of any
Governmental  Entity  or  arbitrator  outstanding  against  Holdings  ("Holdings
Order") on the date of this Agreement,  in each case in which the amount claimed
or that could be  involved  is in excess of  $100,000.  Except as  disclosed  on
Schedule 3.2(k) of the Holdings  Letter,  there is no Holdings  Litigation that,
individually  or in  the  aggregate  with  all  other  Holdings  Litigation,  is
reasonably likely to have a Holdings  Material Adverse Effect,  nor is there any
Holdings  Order that,  individually  or in the aggregate with all other Holdings
Litigation, is reasonably likely to have a Holdings Material Adverse Effect or a
material  adverse  effect on  Holdings's  ability  to  perform  its  obligations
hereunder or to consummate the transactions contemplated by this Agreement.


                                       35

<PAGE>

         (l) Taxes. With respect to any period and with respect to any action as
to which the applicable  statute of  limitations  has not expired as of the date
hereof,  and except as set forth on Schedule  3.2(1) of the Holdings  Letter and
except for  exceptions to the following that would not,  individually  or in the
aggregate, have a Holdings Material Adverse Effect:

                  (i) Holdings has (A) duly and timely  (taking into account any
         extensions) filed all federal,  state, local, foreign and other Returns
         required to be filed or sent by or with respect to it in respect of any
         Taxes,  including  the  consolidated  and  combined  Returns that it is
         required to file pursuant to the Tax Sharing  Agreement,  (B) duly paid
         or deposited on a timely basis all Taxes  (including  estimated  Taxes)
         that are due and payable (except for audit  adjustments not material in
         the aggregate or to the extent that liability  therefor is reserved for
         in  Holdings's  most recent  audited  financial  statements)  for which
         Holdings may be liable,  (C) established  reserves that are required by
         GAAP for the payment of all Taxes not yet due and payable  with respect
         to the results of operations of Holdings  through the date hereof,  and
         (D) complied in all material  respects with all applicable  laws, rules
         and  regulations  relating to the  withholding  of Taxes and has in all
         material  respects timely withheld from employee wages and paid over to
         the proper  governmental  authorities  all  amounts  required  to be so
         withheld and paid over;  provided,  all of the representations  made in
         this  paragraph  are  conditioned,  to the extent based on  information
         provided  by  LabOne or any of its  Subsidiaries  to  Holdings,  on the
         assumption that all such information is true,  accurate and complete in
         all material respects.

                  (ii)  Except  as  listed in  Schedule  3.2(l) of the  Holdings
         Letter, (A) there is no audit or examination being conducted by any tax
         authority  with  respect to any Return of Holdings and (B) no extension
         or waiver of a statute of limitation  regarding  liability for Taxes or
         the filing of any Return has been given or agreed to by  Holdings  that
         has the effect of keeping  open a  statutory  limitations  period  that
         would otherwise now be closed.  Except to the extent being contested in
         good  faith  and  as  disclosed  in  Schedule   3.2(l),   all  material
         deficiencies  for Taxes asserted as a result of an audit or examination
         conducted  by any  taxing  authority  with  respect  to any  Return  of
         Holdings have been paid or provided  for, in  accordance  with GAAP, in
         Holdings's  most recent audited  financial  statements  included in the
         Holdings SEC  Documents.  Except as provided  for, in  accordance  with
         GAAP, in Holdings's most recent audited financial  statements  included
         in the Holdings SEC Documents and as disclosed in Schedule  3.2(l),  no
         material deficiency for any such Taxes has been proposed,  asserted, or
         assessed  against  Holdings by any federal,  state,  local,  foreign or
         other taxing  authority  with respect to any period.  Holdings is not a
         party to an agreement that provides for the

                                       36

<PAGE>

         payment  of any  amount  that would  constitute  an  "excess  parachute
         payment" within the meaning of Section 280G of the Code.

                  (iii)  Holdings  is not a  party  to,  bound  by or in any way
         obligated  under any tax  sharing or  allocation  agreement  or similar
         agreement or arrangement,  except for the Tax Sharing Agreement and the
         tax  sharing  agreement  dated  as  of  February  28,  1997,  with  SLH
         Corporation (now named  "Syntroleum  Corporation," the "SLH Tax Sharing
         Agreement").  All payments that are required to have been made prior to
         the date hereof by Holdings  pursuant to the Tax Sharing  Agreement and
         the SLH Tax Sharing Agreement have been made, and any payments that are
         required to be made with  respect to periods  prior to the date hereof,
         but not due until a date  subsequent to the date hereof,  are disclosed
         on Schedule 3.2(l), Holdings has complied in all material respects with
         all  provisions  of the Tax Sharing  Agreement  and the SLH Tax Sharing
         Agreement that are applicable to it.

         (m)      Pension and Benefit Plans; ERISA.

                  (i) Holdings has made available to LabOne true,  correct,  and
         complete copies of each of the following which is sponsored, maintained
         or  contributed  to by  Holdings  for the benefit of the  employees  of
         Holdings:

                           (1) each  "employee  benefit  plan,"  as such term is
                  defined in Section 3(3) of ERISA,  including,  but not limited
                  to, employee benefit plans,  such as foreign plans,  which are
                  not subject to the provisions of ERISA ("Holdings Plans"); and

                           (2)  each  personnel   policy,   stock  option  plan,
                  collective  bargaining  agreement,  bonus plan or arrangement,
                  incentive   award  plan  or  arrangement,   vacation   policy,
                  severance pay plan, policy or agreement, deferred compensation
                  agreement   or   arrangement,    executive   compensation   or
                  supplemental   income   arrangement,   consulting   agreement,
                  employment  agreement  and each other  employee  benefit plan,
                  agreement,  arrangement,  program,  practice or  understanding
                  which is not  described  in  Section  3.2(m)(i)(l)  ("Holdings
                  Benefit Programs").

                  (ii)  Except  as  disclosed  in  Schedule  3.2(m)(ii)  of  the
         Holdings Letter:

                           (1)  Holdings  does  not  contribute  to or  have  an
                  obligation to  contribute  to, and have not at any time within
                  six years prior to the Effective Time contributed to or had an
                  obligation to contribute  to, a multi employer plan within the
                  meaning of Section 3(37) of ERISA;

                                       37

<PAGE>

                           (2) Holdings has substantially performed all material
                  obligations,  whether  arising  by  operation  of  law  or  by
                  contract,  required to be performed by it in  connection  with
                  the Holdings Plans and the Holdings Benefit  Programs,  and to
                  the  knowledge  of  Holdings  there have been no  defaults  or
                  violations  by any  other  party  to  the  Holdings  Plans  or
                  Holdings Benefit Programs that would have a Holdings  Material
                  Adverse Effect;

                           (3)  All  reports  and  disclosures  relating  to the
                  Holdings  Plans  required  to be filed  with or  furnished  to
                  governmental   agencies,   Holdings   Plan   participants   or
                  beneficiaries  have been filed or furnished  substantially  in
                  accordance  with  applicable  law in a timely  manner,  except
                  where the failure to do so would not have a Holdings  Material
                  Adverse Effect;

                           (4) Each Holdings Plan intended to be qualified under
                  Section 401 of the Code  satisfies  the  requirements  of such
                  Section and has received a favorable determination letter from
                  the Internal  Revenue Service  regarding such qualified status
                  and has  not,  since  receipt  of the  most  recent  favorable
                  determination  letter,  been  amended or, to the  knowledge of
                  Holdings, operated in a way which would reasonably be expected
                  to materially  adversely affect such qualified  status.  As to
                  any Holdings Plan  intended to be qualified  under Section 401
                  of  the  Code,  there  has  been  no  termination  or  partial
                  termination of the Holdings Plan within the meaning of Section
                  411(d)(3) of the Code;

                           (5) There  are no  actions,  suits or claims  pending
                  (other than routine  claims for benefits) or, to the knowledge
                  of Holdings,  threatened  against,  or with respect to, any of
                  the  Holdings  Plans or  Holdings  Benefit  Programs  or their
                  assets  that would  reasonably  be expected to have a Holdings
                  Material Adverse Effect.  To the knowledge of Holdings,  there
                  is  no  matter  pending  (other  than  routine   qualification
                  determination  filings)  with  respect to any of the  Holdings
                  Plans before the IRS, the United States Department of Labor or
                  the PBGC;

                           (6) There are  no Holdings Plans  subject to Title IV
                  of ERISA;

                           (7) No act,  omission  or  transaction  has  occurred
                  which would result in  imposition on Holdings of (A) liability
                  for a breach of fiduciary duty under Section 409 of ERISA, (B)
                  a civil penalty  assessed  pursuant to subsections (c), (i) or
                  (1) of Section 502 of ERISA or (C) a tax  imposed  pursuant to
                  Chapter 43 of  Subtitle D of the Code that,  in any such case,
                  could  reasonably  be  expected  to have a  Holdings  Material
                  Adverse Effect;

                                       38

<PAGE>

                           (8) With respect to any employee benefit plan, within
                  the meaning of Section 3(3) of ERISA,  which is not a Holdings
                  Plan but which is sponsored,  maintained or contributed to, or
                  has been  sponsored,  maintained or  contributed to within six
                  years prior to the Effective Time, by any corporation,  trade,
                  business or entity under common control with Holdings,  within
                  the  meaning  of  Section  414(b),  (c) or (m) of the  Code or
                  Section 4001 of ERISA ("Holdings Commonly Controlled Entity"),
                  (A) no  withdrawal  liability,  within the  meaning of Section
                  4201 of ERISA, has been incurred,  which withdrawal  liability
                  has not been satisfied,  (B) no liability to the PBGC has been
                  incurred by any Holdings  Commonly  Controlled  Entity,  which
                  liability has not been satisfied,  (C) no accumulated  funding
                  deficiency,  whether  or not  waived,  within  the  meaning of
                  Section  302 of  ERISA  or  Section  412 of the  Code has been
                  incurred, and (D) all contributions  (including  installments)
                  to such plan  required by Section 302 of ERISA and Section 412
                  of the Code have been timely made; and

                           (9) After taking into  account all consents  obtained
                  from  participants  in  Holdings  Plans and  Holdings  Benefit
                  Programs, the execution and delivery of this Agreement and the
                  consummation of the transactions  contemplated hereby will not
                  (A) require Holdings to make a larger  contribution to, or pay
                  greater  benefits under, any Holdings Plan or Holdings Benefit
                  Program than it otherwise would (B) create or give rise to any
                  additional or  accelerated  vested  rights or service  credits
                  under any Holdings Plan or Holdings  Benefit  Program,  or (C)
                  accelerate  the  vesting,  accrual  or  exercisability  of any
                  benefits or rights under any Holdings Plan or Holdings Benefit
                  Program,  including,  without limitation,  acceleration of the
                  date on which any  stock  option(s)  may  first be  exercised,
                  other than the options referred to in Schedule 3.2(m)(ii).

                  (iii)  Except as  disclosed  on  Schedule  3.2(m)(iii)  of the
         Holdings  Letter,  there  are no  severance  agreements  or  employment
         agreements  between  Holdings and any  employee of  Holdings.  True and
         correct  copies of all such severance and  employment  agreements  have
         been provided to LabOne. Except as disclosed on Schedule 3.2(m)(iii) of
         the  Holdings  Letter,  (A)  Holdings  has no  consulting  agreement or
         arrangement with any person involving annual  compensation in excess of
         $100,000,  except as are  terminable  without  penalty upon one month's
         notice or less, and (B) no stock or other  security  issued by Holdings
         forms a material  part of the assets of any  Holdings  Plan or Holdings
         Benefit Program.

         (n)      Labor Matters.

                  (i) Except as set forth in Schedule  3.2(n)(i) of the Holdings
         Letter, as of the date of this Agreement,  (1) no employees of Holdings
         are represented by any

                                       39

<PAGE>

         labor organization;  (2) no labor organization or group of employees of
         Holdings has made a written, or, to Holdings's knowledge, other form of
         demand pending demand for recognition or  certification,  and there are
         no representation  or certification  proceedings or petitions seeking a
         representation proceeding presently pending or threatened in writing to
         be brought  or filed with the  National  Labor  Relations  Board or any
         other labor relations  tribunal or authority;  and (3) to the knowledge
         of Holdings,  there are no  organizing  activities  involving  Holdings
         pending with any labor  organization or group of employees of Holdings;
         or

                  (ii)  Except  as  set  forth  on  Schedule  3.2(n)(ii)  of the
         Holdings  Letter,   Holdings  is  in  compliance  with  all  applicable
         employment and labor laws and regulations relating to the employment of
         labor,  including  all such laws and orders  relating to wages,  hours,
         collective bargaining,  discrimination, civil rights, safety and health
         workers'  compensation  and the  collection  and payment of withholding
         and/or  Social  Security  Taxes and  similar  Taxes,  except  where the
         failure to comply would not have a Holdings Material Adverse Effect.

         (o) Intangible Property. To Holdings's knowledge, Holdings possesses or
has  adequate  rights to use all  material  trademarks,  trade  names,  patents,
service marks, brand marks, brand names, computer programs, database, industrial
designs, trade secrets, technology and copyrights necessary for the operation of
its business  (collectively,  the "Holdings Intangible Property"),  except where
the failure to possess or have adequate rights to use such properties  would not
reasonably  be expected to have a Holdings  Material  Adverse  Effect.  Schedule
3.2(o) lists all material patents and trademark  registrations (and applications
for  patents  and  trademark  applications)  or  licensing  agreements  that are
applicable to a material  portion of the business of Holdings and the failure to
possess  would not  reasonably be expected to have a Holdings  Material  Adverse
Effect. To the knowledge of Holdings,  except as set forth on Schedule 3.2(o) of
the Holdings Letter, all of the Holdings Intangible Property is owned or used by
Holdings  free and clear of any and all liens,  claims or  encumbrances,  except
those that are not reasonably likely to have a Holdings Material Adverse Effect,
and Holdings has not forfeited or otherwise relinquished any Holdings Intangible
Property which forfeiture would result in a Holdings Material Adverse Effect. To
the knowledge of Holdings,  the use of Holdings  Intangible Property by Holdings
does not, in any material  respect,  conflict with,  infringe  upon,  violate or
interfere  with or  constitute  an  appropriation  of any  valid  right,  title,
interest or goodwill,  including,  without limitation, any intellectual property
right,  trademark,  trade name,  patent,  service mark,  brand mark, brand name,
computer  program,  database,   industrial  design,  copyright  or  any  pending
application  therefor of any other person and there have been no claims made and
Holdings has not received any notice of any claim or otherwise knows that any of
Holdings Intangible Property is invalid or conflicts with the asserted rights of
any other  person or has not been used or enforced or has been failed to be used
or enforced in a manner that would result in the  abandonment,  cancellation  or
unenforceability  of any of Holdings  Intangible  Property,  except for any such
conflict,

                                       40

<PAGE>

infringement,   violation,   interference,   claim,   invalidity,   abandonment,
cancellation or unenforceability that would not reasonably be expected to have a
Holdings Material Adverse Effect.

         (p)      Environmental Matters.

                  (i) Except as  disclosed  on Schedule  3.2(p) of the  Holdings
         Letter,  the  operations  of Holdings  have been and are  currently  in
         compliance with all Environmental  Laws, except where the failure to so
         comply  would not  reasonably  be expected to have a Holdings  Material
         Adverse Effect.

                  (ii) Except as  disclosed  on Schedule  3.2(p) of the Holdings
         Letter, Holdings has obtained and maintained all permits required under
         applicable  Environmental  Laws for the  continued  operations of their
         respective businesses,  except such permits the lack of which would not
         reasonably be expected to have a Holdings Material Adverse Effect.

                  (iii) Except as  disclosed on Schedule  3.2(p) of the Holdings
         Letter,  as of the date hereof  Holdings is not subject to any material
         (individually  or in  the  aggregate)  outstanding  written  orders  or
         material  contracts  with  any  Governmental  Entity  or  other  person
         respecting  (A)  Environmental  Laws,  (B)  Remedial  Action or (C) any
         Release or threatened Release of a Hazardous Material.

                  (iv) Except as  disclosed  on Schedule  3.2(p) of the Holdings
         Letter,  Holdings has not received any written communication  alleging,
         with respect to any such party,  and has no knowledge of, the violation
         of or  liability  under  any  Environmental  Law,  which  violation  or
         liability  would  reasonably  be expected  to have a Holdings  Material
         Adverse Effect.

                  (v) Except as  disclosed  on Schedule  3.2(p) of the  Holdings
         Letter,  Holdings has no contingent  liability in  connection  with any
         Release of any Hazardous Material  including,  without  limitation,  in
         connection  with the  exposure of any person or  property to  Hazardous
         Material that would reasonably be expected to have a Holdings  Material
         Adverse Effect.

                  (vi) Except as  disclosed  on Schedule  3.2(p) of the Holdings
         Letter,   the   operations  of  Holdings   involving  the   generation,
         transportation,  treatment,  storage or disposal of hazardous waste, as
         defined and  regulated  under 40 C.F.R.  Parts 260-270 (in effect as of
         the date of this  Agreement)  or any  state  equivalent,  or any  other
         Hazardous  Material are in  compliance  with  applicable  Environmental
         Laws,  except  where the failure to so comply would not  reasonably  be
         expected to have a Holdings Material Adverse Effect.


                                       41

<PAGE>

                  (vii) Except as  disclosed on Schedule  3.2(p) of the Holdings
         Letter,  to the  knowledge of Holdings as of the date hereof,  there is
         not now on or in any property of Holdings any of the following: (A) any
         underground   storage   tanks   or   surface   impoundments,   (B)  any
         asbestos-containing  materials,  or (C) any polychlorinated  biphenyls,
         any of which ((A), (B) or (C) preceding)  could  reasonably be expected
         to  have a  Holdings  Material  Adverse  Effect.  To the  knowledge  of
         Holdings  as of the  date  hereof,  none  of the  properties  owned  or
         operated  by  Holdings  are  restricted  as to use or as to transfer of
         title,  or the  subject  of any  special  recorded  notice,  under  any
         Environmental Law.

                  (viii)  Holdings  has made  available to LabOne for review all
         written reports of  environmental  audits and assessments  prepared for
         Holdings  within the last three  years by third  party  consultants  or
         internal  environmental,  safety or health  personnel  which are in the
         possession  or control of  Holdings  and which  relate to the assets or
         operations of Holdings.

         (q) Opinion of  Financial  Advisor.  The Board of Directors of Holdings
has received  the opinion of Salomon  Smith Barney Inc. (a copy of which will be
delivered to LabOne),  dated the date of this Agreement,  to the effect that, as
of  such  date,   after  taking  into  account  the  Stock  Split,   the  Merger
Consideration is fair to Holdings from a financial point of view.

         (r) Vote  Required.  Assuming that the Articles  Amendment is approved,
the affirmative  vote of the holders of two-thirds of the outstanding  shares of
Holdings  Common Stock is the only vote of the holders of any class or series of
Holdings  capital stock  necessary to approve this  Agreement and the Merger and
the transactions contemplated hereby.

         (s) Insurance.  Holdings has delivered to LabOne an insurance  schedule
of Holdings's (i) directors' and officers' liability insurance, and (ii) primary
and excess casualty insurance policies, providing coverage for bodily injury and
property  damage to third parties,  including  products  liability and completed
operations coverage, and worker's compensation, in each case in effect as of the
date hereof.  Holdings maintains  insurance coverage reasonably adequate for the
operation  of the  business  of  Holdings  (taking  into  account  the  cost and
availability of such insurance),  and the transactions  contemplated hereby will
not materially adversely affect such coverage.

         (t) Brokers.  Except as  disclosed  on Schedule  3.2(t) of the Holdings
Letter,  no  broker,  investment  banker,  or other  person is  entitled  to any
broker's,  finder's or other similar fee or  commission  in connection  with the
transactions  contemplated by this Agreement based upon  arrangements made by or
on behalf of Holdings.

                                       42

<PAGE>

         (u) Title. Except as disclosed in the Holdings Financial  Statements or
on Schedule  3.2(u) of the Holdings  Letter,  Holdings  has good and  marketable
title to all real property and good title to all personal  property owned by it,
in each case free and clear of all liens, pledges or encumbrances securing money
borrowed,  the  deferred  purchase  price of  property  in excess of $300,000 or
capital leases and free and clear of all other liens,  pledges,  encumbrances or
defects  that could  affect the value or use  thereof  except for any such other
liens, pledges,  encumbrances or defects that would not have a Holdings Material
Adverse Effect.

         (v) Books and Records.  Holdings (i) makes and keeps accurate books and
records and (ii) maintains internal accounting controls which provide reasonable
assurance that (A)  transactions  are executed in accordance  with  management's
authorization,  (B) transactions are recorded as necessary to permit preparation
of their financial  statements and to maintain  accountability for their assets,
(C) access to its  assets is  permitted  only in  accordance  with  management's
authorization  and (D) the  reported  accountability  for its assets is compared
with  existing  assets at  reasonable  intervals,  except for any  inaccuracy or
inadequacy of controls that would not  reasonably be expected to have a Holdings
Material Adverse Effect.

         (w) Certain  Payments.  Neither  Holdings,  nor any director,  officer,
agent,  employee  or other  person  associated  with or  acting on behalf of the
Holdings,  has used any  corporate  funds for any unlawful  contribution,  gift,
entertainment or other unlawful expense relating to political activity; made any
direct or indirect  unlawful  payment to any  foreign or  domestic  governmental
official or employee from  corporate  funds;  violated or is in violation of any
provision of the Foreign  Corrupt  Practices  Act of 1977;  nor made any illegal
bribe, rebate,  payoff,  influence payment,  kickback or other unlawful payment,
except for any such expenses,  payments or violations  that would not reasonably
be expected to have a Holdings Material Adverse Effect.

         (x) Transactions with Related Parties.  Except as set forth in Schedule
3.2(x) of the Holdings  Letter or in the Holdings  SEC  Documents,  there are no
agreements,  contracts or other  arrangements  between (i) Holdings,  on the one
hand, and (ii) any Related Person of Holdings,  on the other hand. Except as set
forth in Schedule  3.2(x) of the  Holdings  Letter,  as of the  Closing  Date no
Related  Person of  Holdings  and no present  officer or director of any Related
Person of Holdings  shall have any interest in any  property  (real or personal,
tangible or  intangible)  or contract  used in or  pertaining to the business of
Holdings  and no Related  Person of  Holdings  shall have any direct or indirect
ownership  interest  (excluding  immaterial  passive  investments) in any person
(other than  through  Holdings)  with which  Holdings  competes in any  material
respect  or has a material  business  relationship.  Other  than those  services
described in the Holdings SEC Documents,  Schedule 3.2(x) of the Holdings Letter
sets  forth as of the  date of this  Agreement  a  description  of all  services
provided by any Related Person of Holdings to Holdings.

                                       43

<PAGE>

         (y)  State  Takeover  Laws.  The  transactions   contemplated  by  this
Agreement are exempt from the provisions of Sections  351.407 and 351.459 of the
Missouri Law.

         (z) Nature of Election by Certain Affiliates. Each of the Directors and
executive  officers of Holdings  has  represented  to Holdings  that such person
intends to make a Stock  Election  with  respect to any shares of LabOne  Common
Stock that such person owns at the Effective Time.





                                   ARTICLE IV

                    COVENANTS RELATING TO CONDUCT OF BUSINESS

         4.1 Conduct of Business by LabOne Pending the Merger. During the period
from the date of this Agreement and continuing until the Effective Time,  LabOne
agrees as to itself and its Subsidiaries that (except as expressly  contemplated
or permitted by this  Agreement,  or to the extent that Holdings shall otherwise
consent in writing):

         (a) Ordinary  Course.  Except as provided on Schedule  4.1(a) of LabOne
Letter  and  except as  contemplated  by  Section  5.16,  each of LabOne and its
Subsidiaries  shall  carry on its  businesses  only in the  usual,  regular  and
ordinary  course in  substantially  the same manner as heretofore  conducted and
shall use all  commercially  reasonable  efforts to preserve  intact its present
business organizations,  keep available the services of its current officers and
employees, and endeavor to preserve its relationships with customers,  suppliers
and others  having  business  dealings  with it to the end that its goodwill and
ongoing  business shall not result in any LabOne  Material  Adverse Effect as of
the Effective Time.

         (b) Dividends;  Changes in Stock. Except as provided on Schedule 4.1(b)
of LabOne Letter and except for quarterly  cash  dividends  consistent  with the
current  practice of the LabOne Board,  LabOne shall not and it shall not permit
any of its  Subsidiaries  to: (i) declare or pay any  dividends on or make other
distributions in respect of any of its capital stock, except for the declaration
and  payment  of  dividends  from a  Subsidiary  of LabOne to LabOne or  another
Subsidiary of LabOne and except for cash dividends or  distributions  paid on or
with respect to the capital stock of a Subsidiary of LabOne; (ii) split, combine
or  reclassify  any of its capital  stock or issue or  authorize  or propose the
issuance of any other  securities  in respect of, in lieu of or in  substitution
for  shares of its  capital  stock;  or (iii)  repurchase,  redeem or  otherwise
acquire,  or permit any of its  Subsidiaries  to  purchase,  redeem or otherwise
acquire, any shares of its capital stock,

                                       44

<PAGE>

except  as  required  by the  terms of its  securities  outstanding  on the date
hereof, as contemplated by any LabOne Plan or LabOne Benefit Program or pursuant
to the  terms of any  existing  agreements  with  employees  of  LabOne  and its
Subsidiaries upon the termination of employment of any such employee.

         (c)  Issuance of  Securities.  LabOne shall not and it shall not permit
any of its Subsidiaries  to, issue,  deliver or sell, or authorize or propose to
issue, deliver or sell, any shares of its capital stock of any class, any Voting
Debt or any securities  convertible into, or any rights,  warrants or options to
acquire, any such shares, Voting Debt or convertible securities, other than: (i)
the issuance of LabOne  Common Stock upon the exercise of stock options or other
rights granted under LabOne Stock Option Plans that are  outstanding on the date
hereof,  or in  satisfaction of stock grants or stock based awards made prior to
the date hereof  pursuant to LabOne  Stock  Option  Plans or the exercise of any
other rights by  participants  under any LabOne Plan or LabOne Benefit  Program;
and (ii)  issuances by a wholly  owned  Subsidiary  of its capital  stock to its
parent.

         (d) Governing Documents. Except as contemplated hereby or in connection
herewith,  LabOne  shall  not  amend  or  propose to  amend  its  Certificate of
Incorporation or Bylaws.

         (e) No Acquisitions.  Other than acquisitions listed on Schedule 4.1(e)
of  LabOne  Letter,  LabOne  shall  not  and  it  shall  not  permit  any of its
Subsidiaries to, acquire or agree to acquire by merging or,  consolidating with,
or by purchasing a substantial  equity  interest in or a substantial  portion of
the  assets  of,  or by any  other  manner,  any  business  or any  corporation,
partnership, association or other business organization or division thereof.

         (f)  No   Dispositions.   Other  than:  (i)  dispositions  or  proposed
dispositions  listed on Schedule 4.1(f) of LabOne Letter;  (ii)  dispositions as
may be necessary or required by law to consummate the transactions  contemplated
hereby;   or  (iii)   dispositions  of  other  assets  that  are  not  material,
individually  or in the  aggregate,  to LabOne and its  Subsidiaries  taken as a
whole, LabOne shall not and it shall not permit any of its Subsidiaries to sell,
lease,  encumber or otherwise  dispose of, or agree to sell, lease (whether such
lease is an operating or capital lease),  encumber or otherwise  dispose of, any
of  its  assets.   Notwithstanding  the  foregoing,   none  of  LabOne  nor  its
Subsidiaries  shall sell,  lease,  encumber or otherwise dispose of, or agree to
dispose of, any of its assets to any Related  Person  other than in the ordinary
course of business on an arms length basis.

         (g) No Dissolution,  Etc. Except as otherwise permitted or contemplated
by this Agreement, LabOne shall not authorize, recommend, propose or announce an
intention to adopt a plan of complete or partial  liquidation  or dissolution of
LabOne or any of its Subsidiaries.


                                       45

<PAGE>

         (h) Certain Employee Matters. Except as set forth on Schedule 4.1(h) of
LabOne Letter,  LabOne shall not and it shall not permit any of its Subsidiaries
to:  (i)  grant  any  increases  in the  compensation  of any of its  directors,
officers or employees,  except  increases in the ordinary course of business and
in  accordance  with  past  practice;  (ii)  pay or  agree  to pay any  pension,
retirement  allowance or other employee  benefit not required or contemplated by
any of the existing LabOne Benefit  Programs or LabOne Plans as in effect on the
date hereof to any such director,  officer or employee, whether past or present;
(iii) enter into any new, or amend any  existing,  employment  or  severance  or
termination  agreement with any such director,  officer or key employee; or (iv)
become  obligated under any new LabOne Benefit Program or LabOne Plan, which was
not in  existence or approved by the Board of Directors of LabOne prior to or on
the date hereof,  or amend any such plan or arrangement in existence on the date
hereof if such  amendment  would  have the  effect of  materially  enhancing  or
accelerating any benefits thereunder.

         (i) Indebtedness;  Leases; Capital Expenditures. Except as set forth on
Schedule 4.1(i) of LabOne Letter,  LabOne shall not, nor shall LabOne permit any
of its Subsidiaries to, (i) except in the ordinary course of business, incur any
indebtedness  for borrowed money or guarantee any such  indebtedness or issue or
sell any debt securities or warrants or rights to acquire any debt securities of
such  party or any of its  Subsidiaries  or  guarantee  any debt  securities  of
others,  (ii) except in the ordinary  course of  business,  enter into any lease
(whether such lease is an operating or capital  lease) or create any  mortgages,
liens, security interests or other encumbrances on the property of LabOne or any
of its  Subsidiaries in connection  with any  indebtedness  thereof,  except for
those securing purchase money  indebtedness or (iii) commit to aggregate capital
expenditures in excess of $100,000  outside the capital  budget,  as approved by
LabOne prior to the date hereof.

         (j)  No   Solicitation.   Until  the  Effective  Time  or  the  earlier
termination of this Agreement, LabOne will not, and will not authorize or permit
any of its officers,  directors,  employees, agents and other representatives or
those of any of its Subsidiaries  (collectively,  "LabOne  Representatives") to,
directly or indirectly,  solicit or initiate any prospective buyer or the making
of any proposal that  constitutes,  or may  reasonably be expected to lead to, a
LabOne  Acquisition  Proposal  (as defined  herein)  from any person;  provided,
however, that, notwithstanding any other provision of this Agreement, (i) LabOne
may engage in  discussions or  negotiations  with a third party who (without any
solicitation  or initiation,  directly or  indirectly,  by or with LabOne or any
LabOne  Representatives after the date of this Agreement) seeks to initiate such
discussions  or  negotiations  and may  furnish  such  third  party  information
concerning LabOne and its business,  properties and assets,  (ii) LabOne's Board
of  Directors  may  take  and  disclose  to  LabOne's  stockholders  a  position
contemplated  by Rule  14e-2(a)  promulgated  under the  Exchange  Act and (iii)
following receipt of a LabOne Acquisition  Proposal that is financially superior
to the Merger and  reasonably  capable of being  financed (as determined in each
case  in good  faith  by the  Special  Committee  after  consultation  with  the
financial advisors to the Special  Committee),  the Board of Directors of LabOne
may withdraw,

                                       46

<PAGE>

modify or change its  recommendation  referred to in Section  5.5,  based on the
recommendation  by  the  Special  Committee,  or  terminate  this  Agreement  in
accordance  with  Section  7.1(b),  based on the  recommendation  by the Special
Committee,  but in each case  referred to in the  foregoing  clauses (i) through
(iii)  only to the  extent  that (A) the  Board of  Directors  of  LabOne in the
exercise  of its good faith  judgment as to its  fiduciary  duties to all LabOne
Stockholders, as advised by outside counsel, or (B) the Special Committee in the
exercise  of  its  good  faith  judgment  as to  its  fiduciary  duties  to  the
unaffiliated LabOne  Stockholders,  as advised by outside counsel to the Special
Committee,   shall  conclude  that  such  action  is  necessary.   LabOne  shall
immediately  cease  and  cause  to  be  terminated  any  existing  solicitation,
initiation, encouragement,  activity, discussion or negotiation with any parties
conducted heretofore by LabOne or any LabOne Representatives with respect to any
LabOne  Acquisition  Proposal existing on the date hereof.  LabOne will promptly
notify Holdings of any such requests for such  information or the receipt of any
LabOne  Acquisition  Proposal,  including  the  identity  of the person or group
engaging in such  discussions or  negotiations,  requesting such  information or
making such LabOne Acquisition Proposal,  and (unless (i) the Board of Directors
of  LabOne  concludes  such  disclosure  is  inconsistent   with  its  fiduciary
obligations to all LabOne  Stockholders,  as advised by outside counsel, or (ii)
the Special  Committee  concludes that such disclosure is inconsistent  with its
fiduciary obligations to Unaffiliated LabOne Stockholders, as advised by outside
counsel to the Special  Committee)  the  material  terms and  conditions  of any
LabOne  Acquisition  Proposal.  As used in this Agreement,  "LabOne  Acquisition
Proposal"  shall mean any  proposal or offer,  other than a proposal or offer by
Holdings or any of its  affiliates,  for a tender or exchange  offer,  a merger,
consolidation or other business  combination  involving LabOne or any Subsidiary
of LabOne or any proposal to acquire in any manner a substantial equity interest
in, or substantially all of the assets of, LabOne or any of its Subsidiaries.

         (k)  Pooling.  LabOne  shall not,  nor shall  LabOne  permit any of its
Subsidiaries  to, enter into any agreement,  effect any  transaction,  incur any
obligation  or  commitment  or take any other  action that could  reasonably  be
expected to prevent any merger,  consolidation or acquisition of stock or assets
of any entity by the Surviving  Corporation  to be accounted for as a pooling of
interests under  applicable SEC  requirements  and GAAP,  assuming that the sole
consideration from the Surviving  Corporation therefor is Surviving  Corporation
Common Stock.

         4.2  Conduct of Business  by  Holdings  Pending the Merger.  During the
period from the date of this Agreement and continuing  until the Effective Time,
Holdings  agrees that  (except as  expressly  contemplated  or permitted by this
Agreement, or to the extent that LabOne shall otherwise consent in writing):

         (a)  Ordinary  Course.  Except as provided  on  Schedule  4.2(a) of the
Holdings  Letter,  Holdings  shall  carry on its  businesses  only in the usual,
regular and  ordinary  course in  substantially  the same  manner as  heretofore
conducted and shall use all commercially

                                       47

<PAGE>

reasonable efforts to preserve intact its present business  organizations,  keep
available the services of its current  officers and  employees,  and endeavor to
preserve its relationships with customers,  suppliers and others having business
dealings  with it to the end that its  goodwill and ongoing  business  shall not
result in any Holdings Material Adverse Effect as of the Effective Time.

         (b) Dividends;  Changes in Stock. Except as provided on Schedule 4.2(b)
of the Holdings Letter,  Holdings shall not: (i) declare or pay any dividends on
or make other  distributions  in respect of any of its capital  stock other than
regular  quarterly cash  dividends  consistent  with past practice;  (ii) split,
combine or reclassify  any of its capital stock or issue or authorize or propose
the  issuance  of  any  other  securities  in  respect  of,  in  lieu  of  or in
substitution  for shares of its capital stock;  or (iii)  repurchase,  redeem or
otherwise  acquire,  or permit any of its  Subsidiaries  to purchase,  redeem or
otherwise acquire,  any shares of its capital stock,  except for the Stock Split
or as required by the terms of its securities outstanding on the date hereof, as
contemplated by any Holdings Plan or Holdings Benefit Program or pursuant to the
terms of any existing agreements with employees of Holdings upon the termination
of employment of any such employee.

         (c) Issuance of  Securities.  Except  pursuant to the Stock Split or as
provided on Schedule 4.2(c) of the Holdings  Letter,  Holdings shall not, issue,
deliver or sell, or authorize or propose to issue,  deliver or sell,  any shares
of its capital stock of any class, any Voting Debt or any securities convertible
into,  or any rights,  warrants or options to acquire,  any such shares,  Voting
Debt or convertible securities, other than the issuance of Holdings Common Stock
upon the exercise of stock options granted under Holdings Stock Option Plan that
are  outstanding  on the date  hereof  or the  exercise  of any  other  right by
participants under any Holdings Plan or Holdings Benefit Program.

         (d) Governing Documents. Except as contemplated hereby or in connection
herewith,  Holdings  shall  not  amend  or propose  to  amend  its  Articles  of
Incorporation or Bylaws.

         (e) No Acquisitions.  Other than acquisitions listed on Schedule 4.2(e)
of the Holdings  Letter,  Holdings  shall not and it shall not permit any of its
Subsidiaries to, acquire or agree to acquire by merging or  consolidating  with,
or by purchasing a substantial  equity  interest in or a substantial  portion of
the  assets  of,  or by any  other  manner,  any  business  or any  corporation,
partnership, association or other business organization or division thereof.

         (f) No Dispositions.  Other than: (i)  dispositions  listed on Schedule
4.2(f) of the Holdings Letter (ii)  dispositions as may be necessary or required
by law to consummate the transactions contemplated hereby; or (iii) dispositions
of other assets that are not  material,  individually  or in the  aggregate,  to
Holdings,  Holdings shall not sell, lease,  encumber or otherwise dispose of, or
agree to sell, lease (whether such lease is an

                                       48

<PAGE>

operating  or capital  lease),  encumber  or  otherwise  dispose  of, any of its
assets.  Notwithstanding the foregoing, Holdings shall not sell, lease, encumber
or  otherwise  dispose  of, or agree to dispose of, (A) any of its assets to any
Related  Person other than in the ordinary  course of business on an arms length
basis or (B) any shares of LabOne Common Stock.

         (g) No Dissolution,  Etc. Except as otherwise permitted or contemplated
by this Agreement, Holdings shall not authorize,  recommend, propose or announce
an intention to adopt a plan of complete or partial  liquidation  or dissolution
of Holdings.

         (h) Certain Employee Matters. Except as set forth on Schedule 4.2(h) of
the  Holdings  Letter,  Holdings  shall  not : (i) grant  any  increases  in the
compensation of any of its directors, officers or employees, except increases in
the ordinary course of business and in accordance  with past practice;  (ii) pay
or agree to pay any pension,  retirement allowance or other employee benefit not
required or contemplated  by any of the existing  Holdings  Benefit  Programs or
Holdings Plans as in effect on the date hereof to any such director,  officer or
employee,  whether  past or  present;  (iii)  enter  into any new,  or amend any
existing,  employment  or  severance  or  termination  agreement  with  any such
director,  officer  or key  employee;  or (iv)  become  obligated  under any new
Holdings  Benefit  Program  or  Holdings  Plan,  which was not in  existence  or
approved by the Board of Directors  of Holdings  prior to or on the date hereof,
or amend any such plan or  arrangement  in  existence on the date hereof if such
amendment  would have the effect of  materially  enhancing or  accelerating  any
benefits thereunder.

         (i) Indebtedness;  Leases; Capital Expenditures. Except as set forth on
Schedule  4.2(i) of the  Holdings  Letter or as  contemplated  by Section  5.13,
Holdings  shall not,  (i) except in the ordinary  course of business,  incur any
indebtedness  for borrowed  money (except for working  capital under  Holdings's
existing  credit  facilities,  and  refinancings  of  existing  debt that permit
prepayment of such debt without  penalty) or guarantee any such  indebtedness or
issue or sell any debt  securities  or  warrants  or rights to acquire  any debt
securities  or  guarantee  any debt  securities  of others,  (ii)  except in the
ordinary  course of  business,  enter into any lease  (whether  such lease is an
operating or capital lease) or create any mortgages,  liens,  security interests
or other  encumbrances  on the  property  of  Holdings  in  connection  with any
indebtedness  thereof,  except for those securing purchase money indebtedness or
(iii) commit to aggregate capital expenditures in excess of $100,000 outside the
capital budget, as approved by Holdings prior to the date hereof.

         (j)  No   Solicitation:   Until  the  Effective  Time  or  the  earlier
termination  of this  Agreement,  Holdings  will not, and will not  authorize or
permit   any  of  its   officers,   directors,   employees,   agents  and  other
representatives  (collectively,  "Holdings  Representatives")  to,  directly  or
indirectly,  solicit  or  initiate  any  prospective  buyer or the making of any
proposal that constitutes, or may reasonably be expected to lead to, a

                                       49

<PAGE>

Holdings  Acquisition  Proposal (as defined  herein) from any person;  provided,
however,  that,  notwithstanding  any other  provision  of this  Agreement,  (i)
Holdings  may  engage in  discussions  or  negotiations  with a third  party who
(without any  solicitation  or initiation,  directly or  indirectly,  by or with
Holdings or any Holdings Representatives after the date of this Agreement) seeks
to initiate such  discussions or  negotiations  and may furnish such third party
information  concerning  Holdings and its business,  properties and assets, (ii)
Holdings's Board of Directors may take and disclose to Holdings's stockholders a
position  contemplated by Rule 14e-2(a)  promulgated  under the Exchange Act and
(iii) following receipt of a Holdings  Acquisition  Proposal that is financially
superior to the Merger and  reasonably  capable of being financed (as determined
in each case in good faith by Holdings's  Board of Directors after  consultation
with  Holdings's  financial  advisors),  the Board of  Directors of Holdings may
withdraw,  modify or change its  recommendation  referred  to in Section  5.5 or
terminate this  Agreement in accordance  with Section  7.1(b),  but in each case
referred to in the  foregoing  clauses (i) through (iii) only to the extent that
the Board of Directors of Holdings shall  conclude,  in the exercise of its good
faith judgment as to its fiduciary duties to its stockholders imposed by law, as
advised  by outside  counsel,  that such  action is  necessary.  Holdings  shall
immediately  cease  and  cause  to  be  terminated  any  existing  solicitation,
initiation, encouragement,  activity, discussion or negotiation with any parties
conducted heretofore by Holdings or any Holdings representatives with respect to
any Holdings  Acquisition  Proposal  existing on the date hereof.  Holdings will
promptly notify LabOne of any such requests for such  information or the receipt
of any Holdings  Acquisition  Proposal,  including the identity of the person or
group engaging in such discussions or negotiations,  requesting such information
or making such Holdings Acquisition Proposal, and (unless the Board of Directors
of  Holdings  concludes  such  disclosure  is  inconsistent  with its  fiduciary
obligations  under  applicable law, as advised by outside  counsel) the material
terms and  conditions  of any  Holdings  Acquisition  Proposal.  As used in this
Agreement,  "Holdings  Acquisition  Proposal"  shall mean any proposal or offer,
other than a proposal or offer by LabOne or any of its affiliates,  for a tender
or  exchange  offer,  a  merger,  consolidation  or other  business  combination
involving  Holdings  or  LabOne  or any  proposal  to  acquire  in any  manner a
substantial  equity interest in, or substantially all of the assets of, Holdings
or LabOne.

         (k)  Pooling.  Except for stock  purchases  required  to  maintain  the
ability to file  consolidated  tax reports with LabOne on a consolidated  basis,
Holdings shall not enter into any agreement,  effect any transaction,  incur any
obligation  or  commitment  or take any other  action that could  reasonably  be
expected to prevent any merger,  consolidation or acquisition of stock or assets
of any entity by the Surviving  Corporation  to be accounted for as a pooling of
interests under  applicable SEC  requirements  and GAAP,  assuming that the sole
consideration from the Surviving  Corporation therefor is Surviving  Corporation
Common Stock.

                                       50

<PAGE>

         (l)      Stock Split.

                  (i) Holdings  shall take all actions  reasonably  necessary to
cause the Stock Split (to be effected as a stock  dividend) to become  effective
immediately prior to the Effective Time (provided that Holdings's  obligation to
cause  the  Stock  Split to  become  effective  shall be  subject  to the  prior
satisfaction  or  waiver,  as  applicable,  of  each  of the  conditions  to the
respective obligation of each party to effect the Merger set forth in Article VI
(other than Section 6.1(h)) shall have been satisfied or waived).

                  (ii) In  connection  with  the  Stock  Split,  there  shall be
transferred on the books of Holdings from retained  earnings to the common stock
capital account of Holdings,  immediately prior to the Effective Time, an amount
equal to the  product  of $1.00  times the  number of whole  shares of  Holdings
Common Stock issuable in connection with such dividend.

                  (iii) In connection with the Stock Split, Holdings may deposit
with American Stock Transfer & Trust Company or such other institution as it may
select  (the  "Distribution  Agent") for the benefit of the holders of shares of
Holdings Common Stock, for distribution  through the Distribution Agent, cash or
shares in an amount  sufficient to satisfy the obligations of Holdings to make a
distribution  in  connection  with the  Stock  Split  and to make  payments  for
fractional  shares  (such cash or shares  being  hereinafter  referred to as the
"Distribution  Fund").  In such event, as promptly as practicable  following the
Effective  Time,  the  Distribution  Agent will  determine the excess of (A) the
number  of  whole  shares  delivered  to the  Distribution  Agent  over  (B) the
aggregate  number of whole shares payable to holders of Holdings Common Stock in
connection  with the Stock Split (such excess  being  herein  called the "Excess
Shares").  Following the Effective  Time, the  Distribution  Agent will sell the
Excess Shares at  then-prevailing  prices on the Nasdaq Stock Market, all in the
manner provided in clause (iv) below.

                  (iv) Any sale of the Excess Shares by the  Distribution  Agent
will be executed  through one or more  brokers or dealers,  as the  Distribution
Agent shall determine, in round lots to the extent practicable. The Distribution
Agent will use  reasonable  efforts to complete the sale of the Excess Shares as
promptly  following  the  Effective  Time as, in the  Distribution  Agent's sole
judgment,  is practicable  consistent  with obtaining the best execution of such
sales in light of prevailing market  conditions.  Until the net proceeds of such
sale or sales have been  distributed  to the prior  holders of  Holdings  Common
Stock, the Distribution  Agent will hold such proceeds in trust for such holders
entitled thereto (the "Holdings Common Stock Trust"). All commissions,  transfer
taxes and other  out-of-pocket  transaction  costs,  including  the expenses and
compensation of the Distribution  Agent incurred in connection with such sale of
the  Excess  Shares  will be paid from the  Holdings  Common  Stock  Trust.  The
Distribution Agent will determine the portion of the Holdings Common Stock Trust
to which each holder is entitled, if any, by

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<PAGE>

multiplying  the amount of the  aggregate net proceeds  comprising  the Holdings
Common  Stock Trust by a fraction,  the  numerator of which is the amount of the
fractional  share  interest to which such holder is entitled  (after taking into
account all Holdings Common Stock held at the Effective Time by such holder) and
the denominator of which is the aggregate  amount of fractional  share interests
to  which  all  holders  of  Holdings  Common  Stock at the  Effective  Time are
entitled.

         (v)  Notwithstanding  the  provisions of clauses (iii) and (iv) of this
Section  4.2(l)  Holdings  may  elect  at its  option,  exercised  prior  to the
Effective Time, in lieu of the issuance and sale of Excess Shares and the making
of the payments hereinabove contemplated,  to pay each holder of Holdings Common
Stock an amount in cash (without  interest)  equal to the value of such fraction
of a share based upon the closing price of Surviving Corporation Common Stock on
the Nasdaq Stock Market on the date on which the Effective  Time shall occur (or
if the  Surviving  Corporation  Common Stock shall not trade on the Nasdaq Stock
Market on such date, the first day that Surviving Corporation Common Stock shall
trade on the Nasdaq Stock Market  thereafter)  and, in such case, all references
herein  to the  cash  proceeds  of the sale of the  Excess  Shares  and  similar
references  will be deemed to mean and refer to the payments  calculated  as set
forth in this Section 4.2(v).


                                    ARTICLE V

                              ADDITIONAL AGREEMENTS

         5.1 Preparation of S-4 and the Proxy Statement.  LabOne, acting through
the Special Committee,  and Holdings shall promptly prepare the Proxy Statement.
Holdings  shall file with the SEC the S-4, in which the Proxy  Statement will be
included as a prospectus. Holdings shall use its commercially reasonable efforts
to have the S-4  declared  effective  under the  Securities  Act as  promptly as
practicable  after such filing.  Holdings shall use its commercially  reasonable
efforts  to cause  the  Proxy  Statement  and any  supplement  to be  mailed  to
stockholders  of Holdings  at the  earliest  practicable  date.  LabOne,  acting
through the Special Committee,  shall use its commercially reasonable efforts to
cause  the  Proxy  Statement  and  any  supplement   thereto  to  be  mailed  to
stockholders of LabOne at the earliest  practicable date. Holdings shall use its
commercially reasonable efforts to obtain all necessary state securities laws or
"blue sky" permits,  approvals and registrations in connection with the issuance
of Surviving Corporation Common Stock in the Merger.  LabOne, acting through the
Special  Committee,  shall  furnish all  information  concerning  LabOne and the
holders of LabOne Common Stock,  including financial statements required by Form
S-4 and the proxy rules under the Exchange Act, as may be  reasonably  requested
in connection  with obtaining  such permits,  approvals and  registrations.  The
parties  acknowledge that any withdrawal or material  modification of a fairness
opinion rendered in connection with the approval of this

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<PAGE>

Agreement  by the Board of Directors  of Holdings or the Special  Committee  and
Board of Directors of LabOne would be an event requiring mailing of a supplement
to the stockholders of the affected company.

         5.2 Letter of LabOne's Accountants.  LabOne, acting through the Special
Committee,  shall  use  its  commercially  reasonable  efforts  to  cause  to be
delivered  to  Holdings  a  letter  of KPMG  LLP,  LabOne's  independent  public
accountants,  dated a date within two business days before the date on which the
S-4 shall become  effective and  addressed to LabOne and  Holdings,  in form and
substance  reasonably  satisfactory  to  Holdings  and  customary  in scope  and
substance for letters delivered by independent  public accountants in connection
with registration statements similar to the S-4.

         5.3  Letter  of  Holdings's   Accountants.   Holdings   shall  use  its
commercially  reasonable  efforts to cause to be delivered to LabOne a letter of
KPMG LLP,  Holdings's  independent public  accountants,  dated a date within two
business  days  before  the date on which the S-4  shall  become  effective  and
addressed to Holdings and LabOne, in form and substance reasonably  satisfactory
to  Holdings  and  LabOne  and  customary  in scope and  substance  for  letters
delivered by  independent  public  accountants in connection  with  registration
statements similar to the S-4.

         5.4 Access to  Information.  Upon  reasonable  notice,  LabOne,  acting
through the Special Committee,  and Holdings shall each (and shall cause each of
their   respective   Subsidiaries   to)  afford  to  the  officers,   employees,
accountants,  counsel and other  representatives  of the other,  access,  during
normal  business hours during the period prior to the Effective Time, to all its
properties,  books, contracts,  commitments and records and, during such period,
each of LabOne and  Holdings  shall (and  shall  cause each of their  respective
Subsidiaries  to) furnish  promptly  to the other (a) a copy of each  quarterly,
annual or  current  report on Form  10-Q,  10-K or 8-K,  schedule,  registration
statement and other document filed or received by it during such period pursuant
to SEC  requirements  and (b) all other  information  concerning  its  business,
properties and personnel as such other party may reasonably request,  excluding,
however,  information covered by confidentiality  agreements with third parties.
Each of LabOne,  and  Holdings  agrees that (i) it will not,  and will cause its
respective representatives not to, use any information obtained pursuant to this
Section 5.4 for any purpose  unrelated to the  consummation of the  transactions
contemplated by this Agreement or Holdings's  ownership of LabOne capital stock,
and (ii) will maintain the  confidentiality  of such information,  except to the
extent  required  to be  disclosed  in the  S-4 or the  Proxy  Statement  or any
supplement thereto or as otherwise required by law or legal process.

         5.5  Stockholders  Meetings.  LabOne  and  Holdings  shall  each call a
meeting of its stockholders (respectively,  the "LabOne Stockholder Meeting" and
the  "Holdings   Stockholder  Meeting"  and,   collectively,   the  "Stockholder
Meetings") to be held as promptly as  practicable  after the date hereof for the
purpose of voting upon this Agreement

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<PAGE>

and the Merger.  Subject to the proviso of the first sentence of Section 4.1(j),
LabOne  will,  through  its  Board  of  Directors  and in  accordance  with  any
recommendation by the Special Committee,  recommend to its stockholders approval
of  such  matters  and  not  rescind  such  recommendation  and  shall  use  its
commercially  reasonable  efforts  to  obtain  approval  and  adoption  of  this
Agreement and the Merger by its stockholders;  provided, however, that the Board
of Directors of LabOne may also  withdraw,  modify or change its  recommendation
based  on a  recommendation  to do so  by  the  Special  Committee  following  a
withdrawal or material  modification of the opinion described in Section 3.1(q).
Subject to the proviso of the first sentence of Section  4.2(j),  Holdings will,
through its Board of Directors,  recommend to its stockholders  approval of such
matters  and not  rescind  such  recommendation  and shall use its  commercially
reasonable  efforts to obtain  approval and adoption of this  Agreement  and the
Merger by its stockholders;  provided,  however,  that the Board of Directors of
Holdings  may also  withdraw,  modify or change its  recommendation  following a
withdrawal or material  modification of the opinion described in Section 3.2(q).
LabOne and Holdings shall coordinate and cooperate with respect to the timing of
such meetings and shall use their  commercially  reasonable efforts to hold such
meetings on the same day.

         5.6 Legal  Conditions  to  Merger.  LabOne and  Holdings  will take all
commercially  reasonable  actions  necessary to comply  promptly  with all legal
requirements  that may be  imposed  on such  party  with  respect  to the Merger
(including,  without  limitation,  furnishing all information in connection with
approvals  of or  filings  with  any  Governmental  Entity)  and  will  promptly
cooperate with and furnish information to each other in connection with any such
requirements imposed upon any of them or any of their Subsidiaries in connection
with the Merger.  LabOne will, and will cause its  Subsidiaries to, and Holdings
will, take all  commercially  reasonable  actions  necessary to obtain (and will
cooperate   with  each   other  in   obtaining)   any   consent,   acquiescence,
authorization,  order or approval of, or any exemption or nonopposition  by, any
Governmental  Entity, court or other person or entity required to be obtained or
made by LabOne,  any of its  Subsidiaries  or  Holdings in  connection  with the
Merger or the taking of any action contemplated thereby or by this Agreement.

         5.7  Agreements of Others.  Prior to the Effective  Time,  LabOne shall
cause to be prepared and  delivered to Holdings a list  identifying  all persons
who, at the time of LabOne Stockholder  Meeting may be deemed to be "affiliates"
of LabOne as that term is used in  paragraphs  (c) and (d) of Rule 145 under the
Securities Act (the "Affiliates").  LabOne shall use its commercially reasonable
efforts to cause each person who is  identified as an Affiliate and who will not
be an  Affiliate  of the  Surviving  Corporation  in  such  list to  deliver  to
Holdings,  at or prior to the  Effective  Time, a written  agreement,  in a form
mutually agreeable to LabOne and Holdings whereby each such person  acknowledges
that such person is subject to the provisions of Rule 145(d)  promulgated  under
the Securities Act.

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<PAGE>

         5.8 Listing.  Holdings shall use its commercially reasonable efforts to
cause  the  shares of  Surviving  Corporation  Common  Stock to be issued in the
Merger, the shares of Surviving  Corporation Common Stock issuable upon exercise
of LabOne  Stock  Options and  issuable  under  LabOne  Stock Option Plans to be
approved for trading on the Nasdaq Stock Market,  subject to official  notice of
issuance, prior to the Closing Date.

         5.9 Board of Directors and Officers. Holdings and LabOne shall take all
necessary action so that as of the Effective Time the directors of the Surviving
Corporation  shall  only be those  individuals  identified  on Exhibit D hereto,
except to the extent any such individual is unwilling or unable to serve in such
capacity,  and except that prior to the Effective  Time, one  additional  person
with significant  experience in the clinical laboratories industry will be named
as a director by mutual  agreement of the Special  Committee  and  Holdings.  If
prior to the Effective  Time an  individual  identified on Exhibit D hereto as a
director or officer is unwilling or unable to serve in such capacity, any person
proposed to fill such  vacancy  shall be subject to the approval of Holdings and
the Special Committee.

         5.10 Assumption of Plans and Agreements; Stock Options; Reservation and
Registration  of Shares.  (a) Holdings  and LabOne agree that they shall,  at or
prior to the  Effective  Time,  execute  and  deliver  an  assumption  agreement
pursuant  to which  Holdings  will,  from  and  after  the  Effective  Time,  be
substituted for, assume and agree to perform, all obligations of LabOne pursuant
to any LabOne Plans and LabOne  Benefit  Programs  established  or maintained by
LabOne  immediately  prior to the  Effective  Time, in each case as Holdings and
LabOne  may  provide  in such  assumption  agreement.  In  connection  with such
assumption  and without  further action by  shareholders  of LabOne or Holdings,
such plans shall be amended such that all references to LabOne and LabOne Common
Stock  shall  become  references  to the  Surviving  Corporation  and  Surviving
Corporation Common Stock, if provided in the assumption agreement referred to in
the preceding sentence.

         (b) At the  Effective  Time,  each  outstanding  option or  Warrant  to
purchase LabOne Common Stock and any stock  appreciation  rights related thereto
that have been granted  pursuant to LabOne  Stock Option Plans (a "LabOne  Stock
Option"), whether vested or unvested, shall be deemed to constitute an option or
warrant to acquire,  on the same terms and conditions as were  applicable  under
such LabOne Stock Option or Warrants,  as the case may be, a number of shares of
Surviving  Corporation  Common  Stock  equal to the  number  of shares of LabOne
Common Stock  purchasable  pursuant to such LabOne Stock Option or Warrants,  as
the case may be, at a price  per share of  Holdings  Common  Stock  equal to the
per-share  exercise  price for the  shares of LabOne  Common  Stock  purchasable
pursuant to such LabOne Stock Option or Warrants,  as the case may be, provided,
however, that in the case of any option to which Section 421 of the Code applies
by reason of its  qualification  under any of Sections  422-424 of the Code, the
option price, the number

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<PAGE>

of shares  purchasable  pursuant to such option and the terms and  conditions of
exercise  of such option  shall be  determined  in order to comply with  Section
424(a) of the Code.

         (c) Holdings shall take all corporate  action  necessary to reserve for
issuance a sufficient number of shares of Surviving Corporation Common Stock for
delivery upon exercise of LabOne Stock Options or Warrants,  as the case may be.
As soon as practicable  after the Effective  Time,  Holdings shall file with the
SEC a  registration  statement  on Form S-8 (or any  successor  form) or another
appropriate  form with  respect to the shares of  Surviving  Corporation  Common
Stock subject to LabOne Stock Options and shall use its commercially  reasonable
efforts  to  maintain  the  effectiveness  of  such  registration  statement  or
registration  statements  (and maintain the current  status of the prospectus or
prospectuses  contained  therein)  for so long as LabOne  Stock  Options  remain
outstanding.

         5.11 Indemnification;  Directors' and Officers' Insurance. (a) From and
after the Effective Time, the Surviving Corporation shall indemnify,  defend and
hold  harmless each person who is now, or has been at any time prior to the date
hereof or who becomes  prior to the  Effective  Time,  an officer or director of
Holdings  or LabOne or any of their  subsidiaries  or an employee of Holdings or
LabOne or any of their  subsidiaries  who acts as a  fiduciary  under any of the
Holdings Benefit Programs, the Holdings Plans, LabOne Benefit Programs or LabOne
Plans,  together  with the  beneficiaries  of such persons upon their death (the
"Indemnified  Parties") against all losses,  claims,  damages,  costs,  expenses
(including  attorneys'  fees  ),  liabilities,  judgments,  penalties  or  fines
(including  excise taxes assessed with respect to an employee  benefit plan), as
well  as  amounts  that  are  paid  in  settlement  with  the  approval  of  the
indemnifying party (which approval shall not be unreasonably withheld),  and all
interest,  assessments and other charges paid or payable in connection  with, or
in  respect  of , any  such  judgments,  fines,  penalties  or  amounts  paid in
settlement,  of or in connection  with any  threatened or actual claim,  action,
suit,  proceeding  or  investigation  based in whole or in part on or arising in
whole or in part out of the fact that such person is or was a director, officer,
or such  employee  of Holdings  or LabOne or any of their  subsidiaries  or as a
fiduciary under any of the Holdings Benefit Programs, the Holdings Plans, LabOne
Benefit Programs or LabOne Plans,  whether  pertaining to any matter existing or
occurring  at or prior to the  Effective  Time and  whether  asserted or claimed
prior  to, or at or  after,  the  Effective  Time  ("Indemnified  Liabilities"),
including all Indemnified  Liabilities  based in whole or in part on, or arising
in whole or in part out of, or pertaining to this Agreement or the  transactions
contemplated hereby. Such indemnification  shall be made to an Indemnified Party
no later than thirty (30) days after receipt by the Surviving Corporation of the
written request of an Indemnified Party,  unless the conduct of such Indemnified
Party resulting in such  Indemnified  Liabilities has been finally adjudged in a
judicial proceeding to have been knowingly fraudulent, deliberately dishonest or
wilful misconduct.

          (b) The Surviving  Corporation  also will pay expenses on an unsecured
basis in advance of the final  disposition  of any such action or proceedings to
each Indemnified

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<PAGE>

Party upon receipt of a written  undertaking by the  Indemnified  Party to repay
such amount if it is finally  adjudged in the judicial  proceeding  in which the
Indemnified  Liabilities are imposed that the Indemnified  Party is not entitled
to indemnification. Without limiting the foregoing, in the event any such claim,
action,  suit,  proceeding or  investigation  is brought against any Indemnified
Parties   (whether  arising  before  or  after  the  Effective  Time),  (i)  the
Indemnified  Parties  may  retain  counsel  of  their  choice  (subject  to  the
limitations   below)   reasonably   satisfactory   to  them  and  the  Surviving
Corporation,  and the Surviving  Corporation  shall pay all fees and expenses of
such counsel for the  Indemnified  Parties  promptly as statements  therefor are
received;   and  (ii)  the  Surviving  Corporation  will  use  all  commercially
reasonable  efforts  to  assist  in the  vigorous  defense  of any such  matter,
provided that the Surviving  Corporation  shall not be liable for any settlement
effected  without its written  consent,  which  consent,  however,  shall not be
unreasonably withheld.

         (c) Any Indemnified Party wishing to claim  indemnification  under this
Section  5.11,  upon  learning of any such claim,  action,  suit,  proceeding or
investigation,  shall notify the  Surviving  Corporation,  but the failure so to
notify  shall not  relieve  the  Surviving  Corporation  from any  liability  to
indemnify  that it may have under this Section  5.11,  except to the extent such
failure materially  increases the amount of indemnification  which the Surviving
Corporation  is  obligated  to pay  hereunder,  in  which  case  the  amount  of
indemnification  the  Indemnified  Party shall be  entitled to receive  shall be
reduced  to an  amount  which the  Surviving  Corporation  proves in a  judicial
proceeding  the  Indemnified  Party would have been entitled to receive had such
notice been timely given. The Indemnified Parties as a group may retain only one
law firm to  represent  them with  respect to each such matter  unless there is,
under  applicable   standards  of  professional   conduct,  a  conflict  on  any
significant issue between the positions of any two or more Indemnified Parties.

         (d) In addition to the indemnification and advances provided for above,
the Surviving  Corporation  shall indemnify an Indemnified Party against any and
all expenses  (including  attorneys'  fees) and, if requested by an  Indemnified
Party, shall (within two business days of such request) advance such expenses to
an Indemnified  Party which are reasonably  incurred by the Indemnified Party in
connection with any claim asserted or action brought by an Indemnified Party for
(i) indemnification or advance payment of expenses by the Surviving  Corporation
under  this  Agreement  or any  other  agreement  or  By-law  of  the  Surviving
Corporation  now or  hereafter  in effect  relating to  Indemnified  Liabilities
and/or (ii) recovery  under any  directors'  and officers'  liability  insurance
policies maintained by Holdings, LabOne or the Surviving Corporation, regardless
of whether an Indemnified  Party ultimately is determined to be entitled to such
indemnification,  advance expense payment or insurance recovery, as the case may
be.

         (e) Holdings and LabOne agree that (i) the rights to indemnification or
advances provided in this agreement shall be enforceable by an Indemnified Party
in any court of

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<PAGE>

competent  jurisdiction  and (ii) in any such  proceeding in which the Surviving
Corporation is contesting an  Indemnified  Party's right to  indemnification  or
advances, the Surviving Corporation shall bear the burden of proof.

         (f)  LabOne  and  Holdings  agree  that  the  rights  afforded  in this
Agreement  are in  addition  to,  and not in  substitution  for,  all  rights to
indemnification,  including provisions relating to advances of expenses incurred
in defense of any action or suit,  existing in favor of the Indemnified  Parties
(including in the Articles of Incorporation or Bylaws or in the  indemnification
agreements previously provided by Holdings or LabOne to the Indemnified Parties)
with  respect to matters  occurring  through the  Effective  Time,  and all such
rights shall survive the Merger and shall  continue in full force and effect for
a period of six years  from the  Effective  Time;  provided,  however,  that all
rights to indemnification in respect of any Indemnified  Liabilities asserted or
made within such period shall continue until the disposition of such Indemnified
Liabilities.

         (g) After the Effective Time,  Surviving  Corporation shall cause to be
maintained in effect the current policies of directors' and officers'  liability
insurance  maintained  by  Holdings  and  LabOne and its  Subsidiaries  or other
policies of  comparable  coverage and amounts  with  respect to matters  arising
before the  Effective  Time  covering  Indemnified  Parties who are directors or
officers  of  Holdings  or  LabOne  as of the date  hereof  and who  cease to be
employed as a director or officer of the  Surviving  Corporation  after the date
hereof and within six years after the  Effective  Time,  such that if a claim is
made against any such  Indemnified  Person  during the six years  following  the
Effective Time with respect to occurrences  arising prior to the Effective Time,
the Indemnified Person would be covered as if (a) the Indemnified Person has not
ceased to be so employed  or serving as a director,  as the case may be, and (b)
such insurance was still in effect.

         5.12 Public  Announcements.  Prior to the Effective  Time or the sooner
termination of this  Agreement,  Holdings and LabOne (acting through the Special
Committee)  will  consult with each other  before  issuing any press  release or
otherwise  making  any  public  statements  with  respect  to  the  transactions
contemplated  by this Agreement and the contents of such press release or public
statement,  and shall not issue any such press  release or make any such  public
statement  prior to such  consultation,  except as may be required by applicable
law or by  obligations  pursuant  to any  listing  agreement  with any  national
securities exchange or transaction reporting system or legal process.

         5.13 Other Actions.  Except as contemplated by this Agreement,  neither
Holdings nor LabOne shall, and shall not permit any of its Subsidiaries to, take
or agree or commit to take any action that is reasonably likely to result in any
of its respective  representations  or warranties  hereunder being untrue in any
material  respect or in any of the conditions to the Merger set forth in Article
VI not being satisfied. Except as contemplated by this Agreement, upon the terms
and subject to the conditions set forth in this  Agreement,  each of the parties
hereto agrees to use its commercially reasonable efforts to take, or cause to

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<PAGE>

be  taken,  all  actions,  and to do,  or cause to be done,  and to  assist  and
cooperate  with the other  parties  in doing,  all things  necessary,  proper or
advisable,  to consummate and make  effective,  in the most  expeditious  manner
practicable,  the  Merger  and  the  other  transactions  contemplated  by  this
Agreement.  In this regard,  Holdings and LabOne  acknowledge  that Holdings may
require  financing to consummate the transaction  contemplated by this Agreement
and LabOne and  Holdings  agree to use their  respective  best efforts to obtain
such financing and to cooperate with one another in procuring such financing.

         5.14 Advice of Changes; SEC Filings. Prior to the Effective Time or the
sooner  termination  of this  Agreement,  Holdings  and LabOne shall confer on a
regular basis with each other, report on operational matters and promptly advise
each  other  orally and in  writing  of any  change or event  having,  or which,
insofar as can reasonably be foreseen,  could have, a Holdings  Material Adverse
Effect or LabOne  Material  Adverse  Effect.  LabOne and Holdings shall promptly
provide each other (or their  respective  counsel) copies of all filings made by
such party with the SEC or any other  state or  federal  Governmental  Entity in
connection with this Agreement and the transactions contemplated hereby.

         5.15 Tax-Free  Transaction.  It is the intention of Holdings and LabOne
that the Merger will qualify as a tax-free transaction described in Sections 332
and 368(a) of the Code (and any  comparable  provisions of  applicable  state or
local  law).   Neither   Holdings  nor  LabOne  (nor  any  of  their  respective
Subsidiaries)  will take or omit to take any action (whether before, on or after
the Closing Date) that would cause the Merger not to be so treated.  The parties
will  characterize  the Merger as such a transaction for purposes of all Returns
and other filings.

         5.16 Employment  Agreements.  Prior to the Effective Time,  LabOne will
use its best commercially  reasonable efforts to amend the employment agreements
of the  persons  in  Schedule  3.1(m)(iii)  of the  LabOne  Letter  so that  the
transactions  contemplated  by this  Agreement  do not  constitute  a "change in
control" under such employment agreements.




                                   ARTICLE VI

                              CONDITIONS PRECEDENT

         6.1  Conditions to Each Party's  Obligation  to Effect the Merger.  The
respective obligation of each party to effect the Merger shall be subject to the
satisfaction prior to the Closing Date of the following conditions:




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         (a)      Stockholder Approval.

                  (i) This Agreement and the Merger shall have been approved and
         adopted by the  affirmative  vote of the  holders of a majority  of the
         outstanding  shares of LabOne Common Stock  entitled to vote thereon at
         LabOne Stockholder  Meeting and shall have been approved and adopted by
         the holders of two-thirds of the outstanding  shares of Holdings Common
         Stock entitled to vote thereon at the Holdings  Stockholder Meeting. In
         addition, this Agreement and the Merger shall have been approved by the
         holders of a majority of the outstanding  shares of LabOne Common Stock
         owned by LabOne  Unaffiliated  Stockholders  present  and voting at the
         LabOne Stockholder Meeting in favor of or against the Agreement and the
         Merger.

                  (ii) The Articles Amendment shall have been adopted, and until
         so adopted this Agreement shall not be effective  except for the second
         sentence of Section 5.4 and except for Section 8.1.

         (b) Listing. The shares of Surviving  Corporation Common Stock issuable
to LabOne  stockholders  pursuant  to this  Agreement  and such other  shares of
Surviving  Corporation  Common  Stock  required to be reserved  for  issuance in
connection  with the Merger and LabOne Plans and LabOne  Benefit  Programs shall
have been  authorized  for trading on the Nasdaq  Stock  Market,  upon  official
notice of issuance.

         (c) Other  Approvals.  All  filings  required  to be made  prior to the
Effective Time with,  and all consents,  approvals,  permits and  authorizations
required to be obtained prior to the Effective Time from any Governmental Entity
or other third  party in  connection  with the  execution  and  delivery of this
Agreement and the consummation of the transactions contemplated hereby by LabOne
and Holdings shall have been made or obtained (as the case may be), except where
the failure to obtain such  consents,  approvals,  permits,  and  authorizations
would not be  reasonably  likely to result in a material  adverse  effect to the
business,  operations,  assets, condition (financial or otherwise) or results of
operation of the Surviving  Corporation  and its  Subsidiaries  taken as a whole
(assuming the Merger has taken place) (a "Surviving Corporation Material Adverse
Effect") or to materially adversely affect the consummation of the Merger.

         (d) S-4. The S-4 shall have become  effective  under the Securities Act
and shall not be the  subject  of any stop order or  proceedings  seeking a stop
order.

         (e) No  Injunctions  or  Restraints.  No temporary  restraining  order,
preliminary  or  permanent  injunction  or other  order  issued  by any court of
competent jurisdiction or other legal restraint or prohibition (an "Injunction")
preventing  the  consummation  of  the  Merger,  or  imposing   conditions  that
compliance  with  which  would  reasonably  be  expected  to  have  a  Surviving
Corporation Material Adverse Effect, shall be in effect.

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<PAGE>

         (f)  Dissenters.  The  aggregate  number of shares  held by  holders of
Holdings Common Stock who have made demands for appraisal in accordance with the
Missouri  Law shall not  exceed  5.0% of the  shares of  Holdings  Common  Stock
outstanding and entitled to vote at the Holdings Stockholders Meeting.

         (g) Tax Opinion.  LabOne and Holdings  shall have  received an opinion,
reasonably satisfactory to both LabOne and Holdings,  dated on or about the date
that is two days  prior  to the date the  Proxy  Statement  is first  mailed  to
stockholders of Holdings,  of Lathrop & Gage L.C.,  counsel to Holdings,  to the
effect that, if the Merger is consummated  in accordance  with the terms of this
Agreement,  no gain or loss will be recognized  for United States federal income
tax  purposes by Holdings,  LabOne,  a  stockholder  of LabOne who makes a Stock
Election  or a  shareholder  of  Holdings  as a result of the Merger or upon the
conversion  of shares of LabOne  Common  Stock and  Holdings  Common  Stock into
shares of Surviving  Corporation  Common Stock,  except with respect to cash, if
any, which is received in lieu of fractional  shares of Holdings Common Stock or
by  shareholders of Holdings who might exercise their  dissenters'  rights under
Missouri  Law,  and that a  stockholder  of LabOne who makes a Cash  Election or
Partial Cash Election will  recognize  taxable income equal to the lesser of the
cash received by such holder and his overall gain on the exchange.

         (h) Stock Split. The Stock Split shall have become effective.

         6.2 Conditions of Obligations of Holdings.  The obligations of Holdings
to  effect  the  Merger  are  subject  to  the  satisfaction  of  the  following
conditions, any or all of which may be waived in whole or in part by Holdings.

         (a)  Representations  and Warranties.  Each of the  representations and
warranties of LabOne set forth in this Agreement shall be true and correct as of
the date of this  Agreement and (except to the extent such  representations  and
warranties  speak as of an  earlier  date) as of the time of the  Closing on the
Closing Date as though made on and as of the time of Closing on the Closing Date
except for such failures to be so true and correct (without giving effect to the
individual  materiality  thresholds  otherwise  contained in Section 3.1 hereof)
which would not,  individually  or in the  aggregate,  reasonably be expected to
have a LabOne Material Adverse Effect.

         (b)  Performance of Obligations of LabOne.  LabOne shall have performed
in all material  respects all  obligations  required to be performed by it under
this Agreement at or prior to the time of Closing on the Closing Date.

         (c) No Vesting of LabOne Stock Options.  LabOne Stock Options shall not
vest, and the  exercisability  thereof shall not accelerate,  as a result of the
Merger and will

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<PAGE>

maintain the same vesting period, and the time at which they become exercisable,
as if the Merger had not occurred.

         (d) Employment Agreements.  The employees identified in Schedule 6.2 of
the  LabOne  Letter  shall  have  agreed  to  amendments  to  their   employment
agreements,   satisfactory   to  Holdings,   providing  that  the   transactions
contemplated  by this  Agreement do not  constitute a "change in control"  under
such agreements.

         (e) Fairness Opinion. The opinion described in Section 3.2(q) shall not
have been  withdrawn or  materially  modified in an adverse  manner prior to the
date of mailing of the Proxy Statement or any supplement thereto.

         (f)  Officers'   Certificate.   Holdings  shall  have  received  (i)  a
certificate  dated as of the Closing  Date and signed on behalf of LabOne by its
chief executive officer or president and by its chief financial officer,  to the
effect  that the  conditions  set forth in Section  6.1 hereof as they relate to
LabOne and in  Section  6.2(a) and (b) have been  satisfied  and (ii)  certified
copies  of  resolutions   duly  adopted  by  LabOne's  Board  of  Directors  and
stockholders  evidencing  the  taking  of  all  corporate  action  necessary  to
authorize the  execution,  delivery and  performance  of this  Agreement and the
consummation of the  transactions  contemplated  hereby,  all in such reasonable
detail as Holdings and its counsel shall reasonably request.

         (g) Letters from  Affiliates.  Holdings  shall have  received from each
person  named in the letter  referred to in Section  5.7 an executed  copy of an
agreement as provided in Section 5.7.

         (h) Financing.  Holdings shall have obtained the financing necessary to
consummate the Merger and other transactions contemplated by this Agreement.

         6.3 Conditions of  Obligations  of LabOne.  The obligation of LabOne to
effect the Merger is subject to the  satisfaction  of the following  conditions,
any or all of which may be waived in whole or in part by LabOne:

         (a)  Representations  and Warranties.  Each of the  representations and
warranties of Holdings set forth in this Agreement  shall be true and correct as
of the date of this Agreement and (except to the extent such representations and
warranties speak as of an earlier date) as of the time of closing on the Closing
Date as though made on and as of the time of closing on the Closing  Date except
for such failures to be so true and correct which (without  giving effect to the
individual  materiality  thresholds  otherwise  contained in Section 3.2 hereof)
would not,  individually  or in the aggregate,  reasonably be expected to have a
Holdings Material Adverse Effect.

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<PAGE>

         (b)  Performance  of  Obligations  of  Holdings.  Holdings  shall  have
performed in all material  respects all obligations  required to be performed by
it under this Agreement at or prior to the time of Closing on the Closing Date.

         (c) Fairness Opinion. The opinion described in Section 3.1(q) shall not
have been  withdrawn or  materially  modified in an adverse  manner prior to the
date of mailing of the Proxy Statement or any supplement thereto.

         (d) Officers' Certificate. LabOne shall have received (i) a certificate
dated as of the  Closing  Date and  signed on behalf  of  Holdings  by its chief
executive  officer and by its chief  financial  officer,  to the effect that the
conditions  set forth in Section 6.1 hereof as they  relate to  Holdings  and in
Section  6.3(a)  and (b) have  been  satisfied  and  (ii)  certified  copies  of
resolutions  duly  adopted by  Holdings's  Board of Directors  and  stockholders
evidencing  the  taking of all  corporate  action  necessary  to  authorize  the
execution,  delivery and  performance of this Agreement and the  consummation of
the transactions  contemplated  hereby,  all in such reasonable detail as LabOne
and its counsel shall reasonably request.

         (e) Board of Directors  and Officers at the  Effective  Time. As of the
closing date,  Holdings  shall have delivered to LabOne  irrevocable  letters of
resignation effective as of the Effective Time from all of the current directors
and  officers of  Holdings.  The  delivery of such  resignations  by officers of
Holdings  shall be deemed to be a  termination  without cause under any existing
employment agreements.

         (f) Financing.  Holdings shall have obtained the financing necessary to
consummate the Merger and other transactions contemplated by this Agreement.




                                   ARTICLE VII

                            TERMINATION AND AMENDMENT

         7.1 Termination. This Agreement may be terminated and the Merger may be
abandoned  at any time  prior to the  Effective  Time,  whether  before or after
approval  of  the  matters  presented  in  connection  with  the  Merger  by the
stockholders of LabOne or Holdings:

         (a) by mutual  written  consent  of LabOne and  Holdings,  or by mutual
action of their  respective  Boards of Directors  which,  in the case of LabOne,
shall  require  the  LabOne  Board of  Directors  to act  consistently  with the
recommendation of the Special Committee;

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<PAGE>

         (b) by either  LabOne or Holdings if (i) the Merger shall not have been
consummated  by October  31, 1999  (provided  that the right to  terminate  this
Agreement under this clause (i) shall not be available to any party whose breach
of any representation or warranty or failure to fulfill any covenant,  agreement
or  condition  under this  Agreement  has been the cause of or  resulted  in the
failure  of the  Merger  to occur on or  before  such  date);  (ii) any court of
competent jurisdiction,  or some other governmental body or regulatory authority
shall  have  issued  an order,  decree  or  ruling  or taken  any  other  action
permanently restraining,  enjoining or otherwise prohibiting the Merger and such
order, decree, ruling or other action shall have become final and nonappealable;
(iii) the  stockholders of Holdings shall not approve the Articles  Amendment or
this  Agreement  and the Merger at the  Holdings  Stockholder  Meeting or at any
adjournment thereof in accordance with Section 6.1(a) ; (iv) the stockholders of
LabOne or the Unaffiliated  LabOne Stockholders shall not approve this Agreement
and the Merger at LabOne  Stockholders  Meeting or at any adjournment thereof in
accordance with Section  6.1(a);  (v) in the exercise of its good faith judgment
pursuant  to  Section  4.2(j),  as  advised  by  outside  counsel,  the Board of
Directors of Holdings  determines that such termination is required by reason of
a Holdings  Acquisition  Proposal  having been made , provided that Holdings may
not  terminate  this  Agreement  pursuant to this clause (v) unless two business
days shall have elapsed after  delivery to LabOne of a written  notification  of
Holdings's   intention  to  terminate   this   Agreement  and  during  such  two
business-day period Holdings shall have fully cooperated with LabOne; including,
without  limitation,  informing  LabOne  of the  terms  and  conditions  of such
Holdings  Acquisition  Proposal  and the  identity of the person or group making
such Holdings Acquisition Proposal,  with the intent of enabling LabOne to agree
to a  modification  of the terms and  conditions  of this  Agreement so that the
transactions  contemplated hereby may be effected,  except that such cooperation
and  information  shall not be provided to the extent that the Holdings Board of
Directors  concludes,  in the  exercise  of its good faith  judgment,  that such
action would be inconsistent with its fiduciary duties to Holdings Stockholders,
as advised by outside  counsel to Holdings;  or (vi) in the exercise of its good
faith  judgment  pursuant to Section 4.1(j) as advised by outside  counsel,  the
Board of Directors of LabOne  determines  that such  termination  is required by
reason of a LabOne Acquisition  Proposal having been made,  provided that LabOne
may not  terminate  this  Agreement  pursuant  to this  clause  (vi)  unless two
business  days  shall have  elapsed  after  delivery  to  Holdings  of a written
notification  of LabOne's  intention to terminate this Agreement and during such
two  business-day  period  LabOne  shall have fully  cooperated  with  Holdings;
including, without limitation, informing Holdings of the terms and conditions of
such LabOne Acquisition  Proposal and the identity of the person or group making
such LabOne Acquisition Proposal,  with the intent of enabling Holdings to agree
to a  modification  of the terms and  conditions  of this  Agreement so that the
transactions  contemplated hereby may be effected,  except that such cooperation
and information  shall not be provided to the extent that the Special  Committee
concludes, in the exercise of its good faith judgment, that such action would be
inconsistent with its fiduciary duties to the Unaffiliated LabOne  Stockholders,
as advised by outside counsel to the Special Committee.

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<PAGE>

         (c) by  Holdings  if (i)  LabOne  shall  have  failed  to comply in any
material respect with any of the covenants,  agreements or conditions  contained
in this Agreement to be complied with or performed by LabOne at or prior to such
date of  termination  (provided  such  breach has not been cured  within 30 days
following  receipt by LabOne of written  notice from Holdings of such breach and
is  existing  at  the  time  of  termination  of  this   Agreement);   (ii)  any
representation  or warranty of LabOne  contained in this Agreement  shall not be
true in all material respects when made (provided such breach has not been cured
within 30 days  following  receipt by LabOne of written  notice from Holdings of
such breach and is existing at the time of termination of this  Agreement) or on
and as of the Effective  Time as if made on and as of the Effective Time (except
to the extent it relates to a particular  date),  except for such failures to be
so true  and  correct  (without  giving  effect  to the  individual  materiality
thresholds   otherwise   contained  in  Section  3.1  hereof)  which  would  not
individually  or in the  aggregate,  reasonably  be  expected  to have a  LabOne
Material  Adverse  Effect,  (iii) the  opinion  described  in Section  3.2(q) is
withdrawn  or  materially  modified in an adverse  manner,  or (iv) the Board of
Directors of LabOne (acting in accordance with a  recommendation  by the Special
Committee),  in the  exercise  of its good faith  judgment  as to its  fiduciary
duties to its  stockholders  imposed by law,  as  advised  by  outside  counsel,
withdraws,  modifies  or changes its  recommendation  of this  Agreement  or the
Merger in a manner  adverse to Holdings or shall have  resolved to do any of the
foregoing; or

         (d) by  LabOne  if (i)  Holdings  shall  have  failed  to comply in any
material respect with any of the covenants,  agreements or conditions  contained
in this  Agreement  to be complied  with or  performed by it at or prior to such
date of  termination  (provided  such  breach has not been cured  within 30 days
following  receipt by Holdings of written  notice from LabOne of such breach and
is  existing  at  the  time  of  termination  of  this   Agreement);   (ii)  any
representation or warranty of Holdings  contained in this Agreement shall not be
true in all material respects when made (provided such breach has not been cured
within 30 days  following  receipt by Holdings of written  notice from LabOne of
such breach and is existing at the time of termination of this  Agreement) or on
and as of the Effective  Time as if made on and as of the Effective Time (except
to the extent it relates to a particular  date),  except for such failures to be
so true  and  correct  (without  giving  effect  to the  individual  materiality
thresholds   otherwise   contained  in  Section  3.2  hereof)  which  would  not
individually  or in the  aggregate,  reasonably  be  expected to have a Holdings
Material  Adverse  Effect,  (iii) the opinion  described in Section 3.1(q) shall
have been  withdrawn or materially  modified or changed in an adverse  manner or
(iv) the Board of  Directors  of  Holdings,  in the  exercise  of its good faith
judgment  as to its  fiduciary  duties to its  stockholders  imposed by law,  as
advised by outside counsel, withdraws, modifies or changes its recommendation of
this  Agreement  or the  Merger in a manner  adverse  to  LabOne  or shall  have
resolved to do any of the foregoing.

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<PAGE>

         7.2  Effect of  Termination.  (a) In the event of  termination  of this
Agreement  by either  LabOne or  Holdings  as  provided  in  Section  7.1,  this
Agreement  shall  forthwith  become  void and  there  shall be no  liability  or
obligation  on the part of Holdings or LabOne except (i) with respect to Section
7.2(b) , the second  sentence of Section 5.4 and Section  8.1, and (ii) and such
termination shall not relieve any party hereto for any intentional  breach prior
to  such  termination  by a  party  hereto  of  any of  its  representations  or
warranties or of any of its covenants or agreements set forth in this Agreement.

         (b) If this Agreement is terminated by Holdings pursuant to Section 7.1
(c)(i) or (ii) or by LabOne under Section 7.1(b)(vi),  and if Holdings is not in
material breach of this Agreement at the time of such  termination,  then LabOne
shall  pay  the  reasonable  out-of-pocket  expenses  incurred  by  Holdings  in
connection with preparing for, entering into and carrying out this Agreement and
the consummation of the transactions  contemplated  hereby. If this Agreement is
terminated by LabOne pursuant to Section  7.1(d)(i) or (ii) or by Holdings under
Section  7.1(b)(v) and if LabOne is not in material  breach of this Agreement at
the  time  of  such   termination,   then  Holdings  shall  pay  the  reasonable
out-of-pocket  expenses  incurred by LabOne in connection  with  preparing  for,
entering  into and  carrying  out this  Agreement  and the  consummation  of the
transactions contemplated hereby.

         7.3 Amendment.  This Agreement may be amended by the parties hereto, by
action taken or authorized by their  respective  Boards of Directors,  which, in
the  case of  LabOne,  shall  require  the  LabOne  Board  of  Directors  to act
consistently  with the  recommendation  of the  Special  Committee,  at any time
before or after approval of the matters  presented in connection with the Merger
by the  stockholders  of LabOne or Holdings,  but, after any such  approval,  no
amendment  shall be made which alters or changes the amount or kind of shares or
other Merger  Consideration to be received by shareholders of LabOne or Holdings
or the  Unaffiliated  LabOne  Stockholders or otherwise alters or changes any of
the terms  and  conditions  of this  Agreement  so as to  adversely  affect  the
shareholders of LabOne or Holdings or the Unaffiliated LabOne Stockholders.
  This Agreement may not be amended except by an instrument in writing signed on
behalf of each of the parties hereto.

         7.4  Extension;  Waiver.  At any time prior to the Effective  Time, the
parties  hereto,  by action taken or  authorized by their  respective  Boards of
Directors  (which,  in the case of LabOne,  shall  require  the LabOne  Board of
Directors to act consistently with the recommendation of the Special Committee),
may, to the extent legally  allowed:  (i) extend the time for the performance of
any of the obligations or other acts of the other parties hereto; (ii) waive any
inaccuracies in the  representations  and warranties  contained herein or in any
document  delivered  pursuant hereto; and (iii) waive compliance with any of the
agreements or conditions  contained herein. Any agreement on the part of a party
hereto to any such  extension  or waiver  shall be valid  only if set forth in a
written instrument signed on behalf of such party.

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<PAGE>


                                  ARTICLE VIII

                               GENERAL PROVISIONS

         8.1 Payment of Expenses.  Except as provided in Section 7.2, each party
hereto shall pay its own expenses  incident to preparing for,  entering into and
carrying  out  this  Agreement  and  the   consummation   of  the   transactions
contemplated hereby,  provided, that immediately prior to the Effective Time and
after  satisfaction  or waiver of all the  conditions set forth in Article VI of
this Agreement to consummation of the Merger, Holdings will reimburse LabOne for
all of its expenses incurred in connection the transactions contemplated by this
Agreement.


         8.2 Nonsurvival of Representations,  Warranties and Agreements. None of
the  representations,  warranties  and  agreements  in this  Agreement or in any
instrument delivered pursuant to this Agreement shall survive the Effective Time
and any liability for breach or violation thereof shall terminate absolutely and
be of no further  force and effect at and as of the Effective  Time,  except for
the  agreements  contained in Article II,  Sections  5.8,  5.10 through 5.12 and
Article VIII, and the agreements delivered pursuant to Section 5.7.

         8.3  Notices.  Any  notice  or  communication   required  or  permitted
hereunder shall be in writing and either  delivered  personally,  telegraphed or
telecopied or sent by certified or registered mail,  postage prepaid,  and shall
be  deemed  to be  given,  dated  and  received  when so  delivered  personally,
telegraphed  or telecopied  or, if mailed,  five business days after the date of
mailing to the following address or telecopy number, or to such other address or
addresses as such person may subsequently designate by notice given hereunder:

         (a)      if to Holdings:

                  P. Anthony Jacobs
                  President and Chief Executive Officer
                  Lab Holdings, Inc.
                  5000 West 95th Street
                  Suite 260, P.O. Box 7568
                  Shawnee Mission, Kansas 66207
                  Phone:  (913) 648-3600
                  Fax:      (913) 648-0037






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<PAGE>

                  with a copy to:

                  John H. Calvert, Esq.
                  Lathrop & Gage L.C.
                  2345 Grand Blvd.
                  Kansas City, Missouri 64108
                  Phone:  (816) 460-5807
                  Fax:     (816) 292-2001

      (b)         if to LabOne, to:

                  Richard S. Schweiker
                  Chairman
                  Special Committee
                  LabOne, Inc.
                  10101 Renner Blvd.
                  Lenexa, Kansas 66219
                  Phone (913) 888-1770
                  Fax (913) 888-8343

                  W. Thomas Grant II
                  President and Chief Executive Officer
                  LabOne, Inc.
                  10101 Renner Blvd.
                  Lenexa, Kansas 66219
                  Phone (913) 888-1770 ext. 1250
                  Fax (913) 888-8343

                  John A. Granda
                  Stinson, Mag & Fizzell, P.C.
                  1201 Walnut
                  Suite 2800
                  P.O. Box 419251
                  Kansas City, Missouri 64141
                  Phone: 816-842-8600
                  Fax: 816-691-3495

                  and with a copy to:








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<PAGE>

                  Whitney F. Miller, Esq.
                  Morrison & Hecker L.L.P.
                  2600 Grand Avenue
                  Kansas City, Missouri 64108-4606
                  Phone: (816) 691-2763
                  Fax:    (816) 474-4208

      8.4  Interpretation.  When a  reference  is  made  in  this  Agreement  to
Sections,  such  reference  shall  be to a  Section  of  this  Agreement  unless
otherwise  indicated.  The table of  contents,  glossary  of  defined  terms and
headings  contained in this Agreement are for reference  purposes only and shall
not affect in any way the meaning or interpretation of this Agreement.  Whenever
the word "include,"  "includes" or "including" are used in this Agreement,  they
shall be deemed to be followed  by the words  "without  limitation."  The phrase
"made  available" in this Agreement shall mean that the information  referred to
has been made available if requested by the party to whom such information is to
be made available.  Unless the context otherwise  requires,  "or" is disjunctive
but not necessarily exclusive,  and words in the singular include the plural and
in the plural include the singular. Any representations and warranties of LabOne
that are  qualified  by the phrase "to the  knowledge of LabOne" or phrases with
similar  wording shall be  interpreted  to refer to the actual  knowledge of the
individuals set forth on Schedule 8.4 of the LabOne Letter. Any  representations
and warranties of Holdings that are qualified by the phrase "to the knowledge of
Holdings" or phrases with similar  wording shall be  interpreted to refer to the
actual  knowledge of the  individuals  set forth on Schedule 8.4 of the Holdings
Letter.

      8.5  Counterparts.   This  Agreement  may  be  executed  in  two  or  more
counterparts,  all of which shall be considered  one and the same  agreement and
shall become effective when two or more counterparts have been signed by each of
the parties and delivered to the other  parties,  it being  understood  that all
parties need not sign the same counterpart.

      8.6  Entire  Agreement;  No  Third  Party  Beneficiaries.  This  Agreement
(together  with any other  documents  and  instruments  referred  to herein) (a)
constitutes  the  entire  agreement  and  supersedes  all prior  agreements  and
understandings,  both  written and oral,  among the parties  with respect to the
subject  matter  hereto and (b) except as provided in Sections 5.7 and 5.11,  is
not intended to confer upon any person other than the parties  hereto any rights
or remedies hereunder.

      8.7  Governing  Law.  Except to the  extent  that the laws of the State of
Delaware are mandatorily applicable to the Merger or the internal affairs of any
of the parties,  this  Agreement  shall be governed and  construed in accordance
with the laws of the State of Missouri,  without giving effect to the principles
of conflicts of law thereof.

                                       69

<PAGE>

      8.8  Severability.  Each  party  agrees  that,  should  any court or other
competent  authority  hold any provision of this  Agreement or part hereof to be
null, void or unenforceable,  or order any party to take any action inconsistent
herewith or not to take an action  consistent  herewith or required hereby,  the
validity,   legality  and   enforceability  of  the  remaining   provisions  and
obligations  contained  or set forth  herein shall not in any way be affected or
impaired  thereby,  unless the foregoing  inconsistent  action or the failure to
take an action  constitutes  a material  breach of this  Agreement  or makes the
Agreement  impossible to perform in which case this Agreement shall terminate as
if the parties mutually agreed under Section 7.1(a).

      8.9 Assignment. Neither this Agreement nor any of the rights, interests or
obligations hereunder shall be assigned by any of the parties hereto (whether by
operation of law or otherwise)  without the prior  written  consent of the other
parties. Subject to the preceding sentence, this Agreement will be binding upon,
inure to the benefit of and be enforceable  by the parties and their  respective
successors and assigns.

      IN WITNESS  WHEREOF,  each party has caused this Agreement to be signed by
its  respective  officers  thereunto duly  authorized,  all as of the date first
written above.

                                LAB HOLDINGS, INC.


                                By:
                                Name:     P. Anthony Jacobs
                                Title:    President and Chief Executive Officer



                                LABONE, INC.


                                By:
                                Name:     W. Thomas Grant II
                                Title:    Chairman of the Board, President and
                                          Chief Executive Officer











                                       70

<PAGE>
                                                                     Exhibit B
   
                              AMENDED AND RESTATED

                            ARTICLES OF INCORPORATION

                                       OF

                                  LABONE, INC.
    
                                    ARTICLE I
   
         The name of the Corporation is: LabOne, Inc.
    
                                   ARTICLE II

         The address,  including street and number, of the Corporation's initial
registered  office  in this  state  and  the  name of its  initial  agent  is CT
Corporation System located at 906 Olive Street,  St. Louis,  Missouri 63101. The
principal office of the Corporation shall be located in Kansas City, Missouri.

                                   ARTICLE III
   
         The aggregate  number of shares of capital stock which the  Corporation
is authorized to issue is 43,000,000 divided into the following classes

         3,000,000  shares  of  Preferred  Stock of the par  value of $0.01  per
         share, which is hereinafter referred to as "Preferred Stock," and

         40,000,000  shares of Common Stock of the par value of $0.01 per share,
         which is hereinafter referred to as "Common Stock."

         The designations,  preferences and relative, participating, optional or
other special rights of each class of stock and the qualifications,  limitations
or restrictions of such  preferences  and/or rights are, or shall be determined,
as follows:
    

         A.       Provisions Applicable to Preferred Stock.

                  1.       Issuance of Shares.

                           (a)      Shares of Preferred Stock may be issued
                                    from time to time in one or more series as
                                    provided herein.  Each such series
<PAGE>
                                    shall be designated so as to distinguish the
                                    shares  thereof from the shares of all other
                                    series,  and shall have such voting  powers,
                                    full,  special  or  limited,  or  no  voting
                                    powers, and such  designations,  preferences
                                    and  relative,  participating,  optional  or
                                    other special  rights,  and  qualifications,
                                    limitations  or  restrictions   thereof,  as
                                    shall  be  stated  and   expressed   in  the
                                    Articles of  Incorporation  or any amendment
                                    thereto or in the  resolution or resolutions
                                    providing   for  the  issue  of  such  stock
                                    adopted by the Board of  Directors  pursuant
                                    to authority  expressly  vested in it by the
                                    provisions    of    these     Articles    of
                                    Incorporation. The shares of Preferred Stock
                                    of all series  shall be of equal  rank,  and
                                    all  shares  of  any  particular  series  of
                                    Preferred  Stock shall be identical,  except
                                    that,   if   the   dividends   thereon   are
                                    cumulative,  the  date or dates  from  which
                                    they shall be  cumulative  may  differ.  The
                                    terms of any series of  Preferred  Stock may
                                    vary from the  terms of any other  series of
                                    Preferred  Stock to the full  extent  now or
                                    hereafter permitted by Missouri law, and the
                                    terms of each series  shall be fixed,  prior
                                    to  the  issuance  thereof,  in  the  manner
                                    provided   in   subparagraph   (b)  of  this
                                    Paragraph 1. Without limiting the generality
                                    of the foregoing,  shares of Preferred Stock
                                    of  different  series  may,  subject  to any
                                    applicable  provisions  of  law,  vary  with
                                    respect to the following terms:

                           (1)      The distinctive designation of such series
                           and the number or shares of such series;

                           (2) The rate or rates at which  shares of such series
                           shall  be   entitled   to  receive   dividends,   the
                           conditions  upon,  and the times of payment  of, such
                           dividends,  the relationship and preference,  if any,
                           of such  dividends to dividends  payable on any other
                           class or  classes or any other  series of stock,  and
                           whether  such   dividends   shall  be  cumulative  or
                           noncumulative,  and, if cumulative, the date or dates
                           from which such dividends shall be cumulative;

                           (3) The right,  if any,  to  exchange  or convert the
                           shares of such  series into shares of any other class
                           or classes, or of any other series of the same or any
                           other  class or classes of stock of the  Corporation,
                           and if so convertible or exchangeable, the conversion
                           price or prices,  or the rates of  exchange,  and the
                           adjustments,  if any,  at which  such  conversion  or
                           exchange may be made;

                                        2
<PAGE>
                           (4)  If  shares  of  such   series  are   subject  to
                           redemption, the time or times and the price or prices
                           at which, at the terms and conditions on which,  such
                           shares shall be redeemable;

                           (5) The preference of the shares of such series as to
                           both  dividends  and  assets  in  the  event  of  any
                           voluntary or  involuntary  liquidation or dissolution
                           or  winding  up or  distribution  of  assets  of  the
                           Corporation;

                           (6) The  obligation,  if any, of the  Corporation  to
                           purchase,  redeem  or retire  shares  of such  series
                           and/or  maintain  a fund for such  purposes,  and the
                           amount or amounts to be payable from time to time for
                           such purpose or into such fund,  the number of shares
                           to be purchased,  redeemed or retired,  and the other
                           terms and conditions of any such obligation;

                           (7) The  voting  rights,  if any,  full,  special  or
                           limited,  to be  given  the  shares  of such  series,
                           including  without  limiting  the  generality  of the
                           foregoing,  the  right,  if any,  as a  series  or in
                           conjunction  with other  series or classes,  to elect
                           one or more members of the Board of Directors  either
                           generally  or at  certain  specified  times  or under
                           certain circumstances,  and restrictions,  if any, on
                           particular corporate acts without a specified vote or
                           consent  of holders of such  shares  (such as,  among
                           others,  restrictions  on modifying the terms of such
                           series of  Preferred  Stock,  authorizing  or issuing
                           additional  shares of Preferred Stock or creating any
                           additional  shares of Preferred Stock or creating any
                           class of stock  ranking  prior to or on a parity with
                           the Preferred Stock as to dividends or assets); and

                           (8)   Any   other    preferences,    and    relative,
                           participating, optional, or other special rights, and
                           qualifications, limitations or restrictions thereof.

                           (b)      Authority is hereby expressly granted to and
                                    vested in the Board of Directors at any time
                                    or from  time to time to issue the Preferred
                                    Stock as Preferred Stock of any series,  and
                                    in connection with the creation of each such
                                    series, so far as not inconsistent  with the
                                    provisions of this Article III applicable to
                                    all series of Preferred Stock, to fix, prior
                                    to  the issuance thereof, by  resolution  or
                                    resolutions  providing  for   the  issue  of
                                    shares  thereof,  the  authorized  number of
                                    shares of such  series, which number  may be
                                    increased, unless  otherwise   provided   by
                                    the   Board   of   Directors   in   creating
 

                                        3
<PAGE>
                                    such series, or decreased, but not below the
                                    number of shares  thereof then  outstanding,
                                    from  time to time  by  like action  of  the
                                    Board  of Directors, the voting powers of 
                                    such series and  the  designations, rights,
                                    preferences,  and  relative,  participating,
                                    optional or other  special  rights, and  the
                                    qualifications, limitations or  restrictions
                                    thereof, of such series.

         B.       Provisions Applicable to Common Stock.

                  1. Dividends.  Subject to the provisions of law and the rights
of the  Preferred  Stock  and any  other  class  or  series  of  stock  having a
preference as to dividends over the Common Stock then  outstanding,  the holders
of Common Stock shall be entitled to receive dividends at such times and in such
amounts as the Board of Directors shall determine.

                  2.  Liquidation  Rights.  In the  event  of any  voluntary  or
involuntary  dissolution,  liquidation  or  winding up of the  Corporation,  the
holders  of Common  Stock,  after  payment in full to the  holders of  Preferred
Stock,  or after  provision  for such  payment  shall  have  been  made,  all in
accordance with the terms governing such Preferred  Stock,  shall be entitled to
payment and distribution of the assets of the Corporation  ratably in accordance
with the number of shares held by them respectively.

         C.       General Provisions.

                  1.  Voting  Rights.  Except  as may be  provided  pursuant  to
Paragraph 1 of Section A. of this Article  III,  the holders of the  outstanding
stock, regardless of class, shall be entitled to one vote for each share held on
each matter submitted to a vote at a meeting of shareholders.

                  2.  Preemptive  Rights.  No holder of any of the shares of any
class or series of stock or of  options,  warrants  or other  rights to purchase
shares of any class or series of stock or of other securities of the Corporation
shall have any preemptive  right to purchase or subscribe for any unissued stock
of any  class or series  or any  additional  shares of any class or series to be
issued  by  reason  of any  increase  in the  authorized  capital  stock  of the
Corporation  of any class or series,  or bonds,  certificates  of  indebtedness,
debentures or other securities convertible into or exchangeable for stock of the
Corporation  of any class or series,  or carrying any right to purchase stock of
any class or series, but any such unissued stock, additional authorized issue or
shares  of any  class  or  series  of stock or  securities  convertible  into or
exchangeable  for stock, or carrying any right to purchase stock,  may be issued
and  disposed  of  pursuant  to  resolution  of the Board of  Directors  to such
persons,  firms,  corporations or associations,  whether such holders or others,
and 

                                        4
<PAGE>
upon  such  terms as  may  be  deemed  advisable  by the Board of  Directors  in
the exercise of its sole discretion.

                  3. Relative  Powers of Preferred  Stock  Series.  The relative
powers,  preferences and rights of each series of Preferred Stock in relation to
the  powers,  preferences  and rights of each other  series of  Preferred  Stock
shall,  in each case, be as fixed from time to time by the Board of Directors in
the  resolution  or  resolutions   adopted  pursuant  to  authority  granted  in
subparagraph  (b) of  Paragraph  1,  Section  A. of this  Article  III,  and the
consent,  by class or series  vote or  otherwise,  of the holders of such of the
series  of  Preferred  Stock as are from time to time  outstanding  shall not be
required  for the  issuance  by the Board of  Directors  of any other  series of
Preferred Stock whether or not the powers,  preferences and rights of such other
series shall be fixed by the Board  Directors as senior to, or on a parity with,
the powers,  preferences and rights of such outstanding  series, or any of them;
provided,  however, that the Board of Directors may provide in the resolution or
resolutions as to any series of Preferred Stock adopted pursuant to subparagraph
(b) of  paragraph  1 of Section A. of this  Article  III that the consent of the
holders of a majority (or such greater  proportion as shall be therein fixed) of
the  outstanding  shares of such series voting thereon shall be required for the
issuance of any or all other series of Preferred Stock.

                  4. Issuance of Preferred Shares.  Subject to the provisions of
Paragraph 3 of this Section C.,  shares of any series of Preferred  Stock may be
issued  from time to time as the Board of  Directors  of the  Corporation  shall
determine, and on such terms and for such consideration as shall be fixed by the
Board of Directors.

                                   ARTICLE IV

         The name and place of residence of each incorporator is as follows:

         W.R. Mullens          9304 Buena Vista          Prairie Village, Kansas
         V.W. Voorhees, II     3816 W. 58th St.          Fairway, Kansas
         Robert L. Meeker      12601 Pawnee Lane         Leawood, Kansas

                                    ARTICLE V

         The number of directors to constitute the present Board of Directors of
the  Corporation  is  fifteen.   Hereafter,  the  number  of  directors  of  the
Corporation  shall be fixed by, or in the manner provided in, and elected in the
manner provided in, the Bylaws of the Corporation,  the applicable provisions of
which shall be  consistent  with those  provisions  of The General and  Business
Corporation Law of Missouri relating to election of directors.  Vacancies in the
Board of Directors shall be filled in the manner provided in the Bylaws.

                                        5

<PAGE>
Directors need not be shareholders  unless the Bylaws of the Corporation require
them to be shareholders.

                                   ARTICLE VI

         The duration of the Corporation is perpetual.

                                   ARTICLE VII

         The Corporation is formed for the following purposes:

         A. To buy, lease,  rent or otherwise  acquire,  own, hold, use, divide,
partition,  develop,  improve,  operate and sell,  lease,  mortgage or otherwise
dispose of, deal in and turn to account,  real estate,  leaseholds,  and any and
all  interests or estates  therein or  appertaining  thereto;  and to construct,
acquire,  manage,  operate,  improve,  maintain,  own, sell,  lease or otherwise
dispose of or deal in buildings,  structures and improvements  situated or to be
situated  on any real  estate or  leasehold,  and to enter into  joint  venture,
partnership  or any other type business  relationships  with other  individuals,
firms,  partnerships and corporations to acquire,  lease,  rent and develop real
estate.

         B. To purchase,  acquire, own, hold, pledge, sell, exchange and dispose
of any stock,  bonds and other  securities and evidences of  indebtedness of any
corporation,  association  or other  entity or  enterprise,  either  domestic or
foreign,  without limit as to the nature or type of business  activity  thereof,
and while owner of any  thereof,  to exercise  all of the  rights,  powers,  and
privileges of ownership.

         C. To enter into any lawful contract or contracts with persons,  firms,
corporations,  other  entities,  governments  or any  agencies  or  subdivisions
thereof,   including  guaranteeing  the  performance  of  any  contract  or  any
obligation of any person, firm, corporation or other entity.

         D. To purchase and acquire,  as a going  concern or  otherwise,  and to
carry on,  maintain  and operate all or any part of the  property or business of
any corporation,  firm,  association,  entity,  syndicate or person  whatsoever,
deemed  to be of  benefit  to  the  Corporation,  or of use  in  any  manner  in
connection  with any of its purposes;  and to dispose thereof upon such terms as
may be advisable to the Corporation.

         E. To  purchase or  otherwise  acquire,  hold,  sell  pledge,  reissue,
transfer or otherwise deal in, shares of the Corporation's  own stock,  provided
that it shall not use its funds or property  for the  purchase of its own shares
of  stock  when  such  use  would  be  prohibited  by law,  by the  Articles  of
Incorporation or by the Bylaws of the Corporation;  and provided,  further, that
shares of its own stock  belonging  to it shall not be voted  upon  directly  or
indirectly.

                                        6

<PAGE>
         F. To  invest,  lend and deal  with  monies of the  Corporation  in any
lawful  manner,  and to acquire by  purchase,  by the exchange of stock or other
securities of the Corporation,  by subscription or otherwise,  and to invest in,
to hold for  investment or for any other purpose,  and to use,  sell,  pledge or
otherwise dispose of, and in general to deal in any interest concerning or enter
into any transaction with respect to (including "long" and "short" sales of) any
stocks, bonds, notes,  debentures,  certificates,  receipts and other securities
and obligations of any government, state, municipality, corporation, association
or other  entity,  including  individuals  and  partnerships  and,  while  owner
thereof,  to exercise all of the rights,  powers and  privileges  of  ownership,
including,  among  other  things,  the  right  to vote  thereon  for any and all
purposes, and to give consents with respect thereto.

         G. To borrow or raise money for any purpose of the  Corporation  and to
secure any loan, indebtedness or obligation of the Corporation, and the interest
accruing  thereon,  and for that or any  other  purpose,  to  mortgage,  pledge,
hypothecate  or charge  all or any part of the  present  or  hereafter  acquired
property, rights and franchises of the Corporation,  real, personal, mixed or of
any character whatever, subject only to limitations specifically imposed by law.

         H. To do any or all of the things hereinabove  enumerated alone for its
own  account,  or for the account of others,  or as the agent for others,  or in
association  with others or by or through  others,  and to enter into all lawful
contracts and undertakings in respect thereof.

         I. To have one or more offices,  to conduct its business,  carry on its
operations and promote its objects within and without the state of Missouri,  in
other  states,  the  District  of  Columbia,   the  territories,   colonies  and
dependencies  of the United  States,  in foreign  countries  and anywhere in the
world,  without  restriction as to place,  manner or amount,  but subject to the
laws applicable thereto;  and to do any or all of the things herein set forth to
the same  extent  as a natural  person  might or could do and in any part of the
world, either alone or in company with others.

         J. In general,  to carry on any other business in connection  with each
and all of the foregoing or incidental  thereto,  and to carry on,  transact and
engage in any and every lawful  business or other lawful thing  calculated to be
of gain,  profit or benefit to the  Corporation as fully and freely as a natural
person  might do, to the  extent  and in the  manner,  and  anywhere  within and
without the state of  Missouri,  as it may from time to time  determine;  and to
have and exercise  each and all of the powers and  privileges,  either direct or
incidental,  which are given and provided by or are available  under the laws of
the state of Missouri in respect of general and business corporations  organized
for profit thereunder,  provided, however, that the Corporation shall not engage
in any activity for which a corporation  may not be formed under the laws of the
state of Missouri.


                                        7
<PAGE>
         K. To advise and counsel others, and to act for and on behalf of others
concerning the  acquisition,  organization,  promotion,  development  financing,
operation,   management,    disposition   and   termination   of   corporations,
associations,  partnerships,  firms and investments of all kinds, and to perform
any and all services relating to the foregoing and otherwise,  and to enter into
and perform contracts, agreements and undertakings in connection therewith.

         None of the purposes and powers  specified in any of the  paragraphs of
this  Article VII shall be in any way limited or  restricted  by reference to or
inference  from the terms of any other  paragraph,  and the  purposes and powers
specified  in each of the  paragraphs  of this  Article VII shall be regarded as
independent purposes and powers. The enumeration of specific purposes and powers
in this Article VII shall not be construed to restrict in any manner the general
purposes and powers of this  Corporation,  nor shall the expression of one thing
be deemed to exclude another,  although it be of like nature. The enumeration of
purposes or powers  herein shall not be deemed to exclude or in any way limit by
inference any purposes or powers which this  Corporation  has power to exercise,
whether expressly by laws of the state of Missouri,  now or hereafter in effect,
or impliedly by any reasonable construction of such laws.

                                  ARTICLE VIII

         A. Except as may be otherwise  specifically provided by statute, or the
Articles of Incorporation or the Bylaws of the Corporation, as from time to time
amended,  all powers of  management,  direction  and control of the  Corporation
shall  be,  and  hereby  are,  vested in the  Board of  Directors,  and shall be
exercised by them and by such  officers and agents as they may from time to time
appoint and empower.  The Board shall have the power to make such Bylaws,  rules
and  regulations  for the  transaction of the business of the Corporation as are
not inconsistent with these Articles or the laws of the state of Missouri.
   
         B. Subject  always to the provisions of Article XI of these Articles of
Incorporation,  the Bylaws of the  Corporation may from time to time be altered,
amended,  suspended or repealed,  or new Bylaws may be adopted, in either of the
following ways: (i) by the affirmative vote, at any annual or special meeting of
the  shareholders,  of the  holders of a majority of the  outstanding  shares of
stock  of  the  Corporation  entitled  to  vote  generally  in the  election  of
directors,  or (ii) by  resolution  adopted by a  majority  of the full Board of
Directors;  provided,  however, that the power of the Directors to alter, amend,
suspend  or repeal  the Bylaws or any  portion  thereof  may be denied as to any
Bylaws or portion  thereof  enacted by the  shareholders  if at the time of such
enactment the shareholders shall so expressly provide.
    




                                        8

<PAGE>
                                   ARTICLE IX

         The Corporation  reserves the right at any annual or special meeting of
shareholders to alter,  amend or repeal any provision  contained in its Articles
of  Incorporation  in the manner now or hereafter  prescribed by the statutes of
Missouri, and all rights and powers conferred herein are granted subject to this
reservation.

                                    ARTICLE X

         A.  No  "Business   Combination"  (as  hereinafter  defined)  shall  be
consummated  or  effected  unless  such  Business  Combination  shall  have been
approved by the affirmative  vote of the holders of not less than eighty percent
(80%) of the total voting power of all outstanding shares of voting stock of the
Corporation,   voting  as  a  single   class.   Such  vote  shall  be   required
notwithstanding  the fact that no vote for such a transaction may be required by
law or that approval by some lesser  percentage of shareholders may be specified
by law or in any agreement with any national  securities  exchange or otherwise;
provided,  however,  that such eighty  percent (80%) vote shall not be required,
and the provisions of Missouri law relating to the vote required for shareholder
approval, if any, shall apply to any such Business Combination if:

                  1.       Both of the following conditions are satisfied:
   
                           (a)      The Aggregate amount of the cash and the
                                    "Fair Market Value" (as hereinafter defined)
                                    of   the   property,   securities  or  other
                                    other consideration to be received per share
                                    of capital stock of the Corporation incident
                                    to   the   consummation  of  such   Business
                                    Combination  by  any  holder  of such stock,
                                    other   than   the    Related   Person   (as
                                    hereinafter   defined)   involved  in   such
                                    Business  Combination, is  not less than the
                                    highest of (i) the "Highest Per Share Price"
                                    or  the "Highest Equivalent Price" (as those
                                    terms are hereinafter defined), paid by such
                                    Related  Person  in  acquiring  any  of  its
                                    holdings of  the Corporation's capital stock
                                    during  the five-year  period preceding  the
                                    announcement  of such  Business Combination;
                                    (ii)  a  price  that includes  the same or a
                                    greater  premium over  the  market  price of
                                    such capital stock immediately prior to  the
                                    announcement of such Business Combination as
                                    the greatest  premium over market price paid
                                    by  such  Related Person  in the purchase of
                                    any    shares   of   any   class   of    the
                                    Corporation's   capital  stock   during  the
                                    five-year period  preceding the announcement
                                    of  such  Business  Combination;  (iii)  the
                                    Highest  Per  Share  Price  or  the  Highest
                                    Equivalent  Price  that  such Related Person
                                    shall,     during     the          five-year

                                                    9
<PAGE>
                                    period  preceding the  announcement  of such
                                    Business  Combination,  have  offered to the
                                    shareholders  of  the  Corporation  for  any
                                    shares of the Corporation's capital stock or
                                    indicated   in  writing  that  it  would  be
                                    prepared    to   offer    under    specified
                                    conditions;  or (iv) the value determined by
                                    an investment  banking or appraisal  firm to
                                    be a fair  price,  for such  shares from the
                                    point  of  view of all  shareholders  of the
                                    Corporation  other than any  Related  Person
                                    (such firm to be engaged solely on behalf of
                                    such  shareholders,  to be paid a reasonable
                                    fee for its  services  upon  receipt  of its
                                    determination,   which   fee  shall  not  be
                                    contingent  upon  the  consummation  of  the
                                    action or  transaction,  and to be  selected
                                    (a) by the affirmative vote of not less than
                                    two-thirds   of  all   of  the   "Continuing
                                    Directors" (as hereinafter  defined) or, (b)
                                    if   such   selection   by  the   Continuing
                                    Directors cannot be effected for any reason,
                                    by the  Secretary  of State of the  State of
                                    Missouri); and
    
                           (b)      A proxy statement complying with the 
                                    requirements of the Securities Exchange Act
                                    of 1934, as amended, shall have been mailed
                                    to all shareholders of the Corporation for
                                    the purpose of soliciting shareholder 
                                    approval of such Business Combination.  Such
                                    proxy statement shall contain at the front
                                    thereof, in a prominent place, a statement 
                                    by the Continuing Directors of their 
                                    position on the advisability (or inadvis-
                                    ability) of the proposed Business 
                                    Combination and an opinion of the investment
                                    banking or appraisal firm described in 
                                    Subsection 1(a)(iv) of this Section A. as to
                                    the fairness of the terms of the proposed
                                    Business Combination from the point of view
                                    of all shareholders of the Corporation other
                                    than any Related Person; or
   
                  2. The Continuing Directors shall have expressly approved such
Business  Combination by the affirmative vote of not less than two-thirds of all
of  the  Continuing  Directors  either  in  advance  of  or  subsequent  to  the
acquisition  of  outstanding  shares of capital  stock of the  Corporation  that
caused the Related Person  involved to become a Related  Person.  In determining
whether  or not  to  approve  any  such  Business  Combination,  the  Continuing
Directors shall give due consideration to all factors they may consider relevant
including without limitation (i) the social,  legal,  environmental and economic
effects on the Corporation's and/or its subsidiaries' policyholders,  employees,
sales  representatives  and clients,  on the communities and geographic areas in
which the Corporation and its subsidiaries operate or are located, and on any of
the   business   and   properties   of   the  Corporation and its  subsidiaries,
and (ii) the adequacy of the consideration
    
                                       10
<PAGE>
offered in relation not only to the current  market  price of the  Corporation's
outstanding  securities,  but also to the current value of the  Corporation in a
freely  negotiated  transaction  and the Continuing  Directors'  estimate of the
Corporation's future value (including the unrealized value of its properties and
assets) as an independent going concern.

         B. For the purpose of this Article X:
   
                  1. The term "Business  Combination" shall mean (i) any merger,
consolidation  or share exchange of the  Corporation or any of its  subsidiaries
with or into a Related Person, in each case irrespective of which corporation or
company is to be the surviving entity; (ii) any sale, lease, exchange, mortgage,
pledge,  transfer or other  disposition to or with a Related Person (in a single
transaction or a series of related transactions) of all or a substantial part of
the assets of the Corporation  (including without limitation any securities of a
subsidiary of the Corporation) or all or a substantial part of the assets of any
of its subsidiaries; (iii) any sale, lease, exchange, mortgage, pledge, transfer
or  other  disposition  to or with  the  Corporation,  or to or with  any of its
subsidiaries (in a single transaction or series of related  transactions) of all
or a substantial  part of the assets of a Related  Person;  (iv) the issuance or
transfer by the Corporation or any of its  subsidiaries of any securities of the
Corporation  or any of its  subsidiaries  to a  Related  Person  (other  than an
issuance or transfer of securities  which is effected on a pro-rata basis to all
shareholders of the Corporation);  (v) the acquisition by the Corporation or any
of  its   subsidiaries  of  any  securities  of  a  Related  Person;   (vi)  any
recapitalization  or  reclassification of shares of any class of voting stock of
the Corporation or any merger or  consolidation  of the Corporation  with any of
its  subsidiaries  which  would have the  effect,  directly  or  indirectly,  of
increasing the  proportionate  share of the  outstanding  shares of any class of
capital stock of the Corporation (or any securities  convertible  into any class
of such  capital  stock)  owned by any  Related  Person;  (vii)  any  merger  or
consolidation of the Corporation  with any of its  subsidiaries  after which the
provisions of this Article X or Articles V, VIII, IX, or XI of these Articles of
Incorporation  shall not appear (or in which  provisions  inconsistent  with any
such provisions  shall appear) in the Articles of Incorporation of the surviving
entity or after which Article I, Sections 3, 5, 6 and 7, Article II, Sections 1,
2 and 4,  Article IV and Article VI of the Bylaws of the  Corporation  shall not
appear  (or in which  provisions  inconsistent  with any such  provisions  shall
appear) in the Bylaws of the surviving  entity;  (viii) any plan or proposal for
the  liquidation  or  dissolution  of the  Corporation;  and (ix) any agreement,
contract or other arrangement providing for any of the transactions described in
this definition of Business Combination.
    
                  2. The  term  "Related  Person"  shall  mean  any  individual,
corporation,  partnership or other person or entity which, as of the record date
for the  determination of shareholders  entitled to notice of and to vote on any
Business  Combination,  or  immediately  prior to the  consummation  of any such
Business  Combination,  is a "Beneficial Owner" (as defined in Rule 13d-3 of the
General Rules and  Regulations  under the Securities  Exchange Act of 1934 as in
effect  at  the date  of  the  adoption of this Article X by the shareholders of

                                       11
<PAGE>
the  Corporation)  (collectively  and as so in effect,  the  "Exchange  Act") of
shares of any class or series of capital stock of the  Corporation  which,  when
combined  with the  shares  of such  class  or  series  of  stock  of which  any
"Affiliates" or  "Associates"  (as defined in Rule 12b-2 of the Exchange Act) of
such  individual,  corporation,  partnership  or  other  person  or  entity  are
Beneficial Owners, amount to ten percent (10%) or more of the outstanding shares
of such class or series of stock,  and any  Affiliate  or  Associate of any such
Related Person.
   
                  3. The term  "Continuing  Director" shall mean any director of
the Corporation elected to a term of office on or whose term of office continued
as of the effective time of the merger of Lab Holdings,  Inc. and LabOne,  Inc.,
and any other director that a majority of Continuing  Directors  shall designate
as a  Continuing  Director  or  shall  recommend  or  approve  for  election  or
nomination for election as a director of the Corporation.

                  4.  Whether  or  not  any  proposed  sale,  lease,   exchange,
mortgage,  pledge,  transfer or other  disposition  of part of the assets of any
entity  involves  a  "substantial  part" of the assets of such  entity  shall be
conclusively  determined by the affirmative  vote of not less than two-thirds of
all of the Continuing Directors;  provided, however, that assets involved in any
single  transaction or series of related  transactions  having an aggregate Fair
Market Value of more than fifteen percent (15%) of the total consolidated assets
of an  entity  and its  subsidiaries  as at the end of such  entity's  last full
fiscal year prior to such  determination  shall always be deemed to constitute a
"substantial part."
    
                  5. For the purposes of Subsection (1)(a) of Section A. of this
Article X, the term "other consideration to be received" shall include,  without
limitation,  Common Stock or other capital stock of the Corporation  retained by
shareholders  of the  Corporation  other than Related Persons or parties to such
Business  Combination  in the  event of a  Business  Combination  in  which  the
Corporation is the surviving corporation.

                  6. A "Related Person" shall be deemed to have acquired a share
of the capital  stock of the  Corporation  at the time when such Related  Person
became the Beneficial  Owner thereof.  With respect to shares owned of record by
Affiliates or Associates of a Related Person or other persons whose ownership is
attributed to a Related Person under the foregoing definition of Related Person,
for purposes of  Subsection  7 of this Section B., such Related  Person shall be
deemed to have  purchased  such  shares at the higher of (a) the price paid upon
the  acquisition  thereof by the  Affiliate,  Associate or other person who owns
such shares of record,  or (b) the market price of the shares in question at the
time when the Related Person became the Beneficial Owner thereof.

                  7. The terms "Highest Per Share Price" and "Highest Equivalent
Price" shall mean the following:  If there is only one class of capital stock of
the

                                       12
<PAGE>
Corporation  issued and outstanding,  the Highest Per Share Price shall mean the
highest  price  that can be  determined  to have been paid or offered to be paid
during the preceding five years by the Related Person  involved for any share or
shares  of that  class of  capital  stock.  If there is more  than one  class of
capital stock of the Corporation issued and outstanding,  the Highest Equivalent
Price shall mean with  respect to each class and series of capital  stock of the
Corporation, the amount determined by two-thirds of the Continuing Directors, on
whatever basis they believe to be appropriate, to be the highest per share price
equivalent  to the  highest  price that can be  determined  to have been paid or
offered  to be paid  during  the  preceding  five  years by the  Related  Person
involved or any  Affiliate or Associate of such Related  Person for any share or
shares of any other  class or series of  capital  stock of the  Corporation.  In
determining  the  Highest  Per Share Price and  Highest  Equivalent  Price,  all
purchases by such  Related  Person or any such  Affiliate or Associate  shall be
taken into account  regardless  of whether the shares were  purchased  before or
after such Related Person became a Related  Person.  The Highest Per Share Price
and the Highest  Equivalent  Price  shall  include  any  brokerage  commissions,
transfer taxes and  soliciting  dealers' fees paid by such Related Person or any
such  Affiliate or Associate  with respect to the shares of capital stock of the
Corporation  acquired by such Related Person or such Affiliate or Associate.  In
the event any Business Combination involving a Related Person shall be proposed,
the Continuing  Directors shall determine the Highest  Equivalent Price for each
class and series of the  capital  stock of the  Corporation  of which  there are
shares issued and outstanding.
   
                  8. The term "Fair Market  Value" shall mean (i) in the case of
stock,  the highest closing sale price during the thirty day period  immediately
preceding  the date in question of a share of such stock on the  Composite  Tape
for New York Stock Exchange-  Listed Stocks,  or, if such stock is not quoted on
the  Composite  Tape, on the New York Stock  Exchange,  or, if such stock is not
listed on the New York Stock Exchange, on the principal United States securities
exchange registered under the Exchange Act on which such stock is listed, or, if
such stock is not listed on any such exchange, the highest closing sale price of
such stock  during the thirty day period  preceding  the date in question on the
National Association of Securities Dealers,  Inc. Automated Quotations System or
any  system  then in use,  or,  if such  stock is not the  subject  of last sale
reporting,  the highest closing bid quotation with respect to a share, or, if no
such quotations are available,  the fair market value on the date in question of
a share of such stock as  determined  by the  affirmative  vote of not less than
two-thirds of all of the Continuing Directors,  and (ii) in the case of property
other than cash or stock,  the fair market value of such property on the date in
question as determined by the  affirmative  vote of not less than  two-thirds of
all the Continuing Directors.
    
                                   ARTICLE XI
   
         Notwithstanding  any other provision of these Articles of Incorporation
or the Bylaws of the Corporation (and  notwithstanding the fact that some lesser
percentage may

                                       13
<PAGE>
be  specified  by law,  these  Articles  of  Incorporation  or the Bylaws of the
Corporation),  the  affirmative  vote by holders of not less than eighty percent
(80%) of the outstanding shares of capital stock of the Corporation  entitled to
vote generally in the election of directors shall be required to amend,  modify,
alter or repeal Article I, Sections 3, 5, 6 and 7, Article II, Sections 1, 2 and
4, Article IV and Article VI of the Bylaws of the  Corporation  (or to adopt any
provision of the Articles of  Incorporation  inconsistent  with any provision of
such Bylaw  provisions) or Articles V, VIII, IX or X or this Article XI of these
Articles  of  Incorporation  (or to  adopt  any  provision  of the  Articles  of
Incorporation  inconsistent  therewith);  provided,  however, that the favorable
vote of a majority of the votes  entitled to vote  generally  in the election of
directors  shall be  sufficient  to approve  any such  amendment,  modification,
alteration  or repeal of the  foregoing  provisions of the Bylaws or Articles of
Incorporation  (or  adoption  of  any  inconsistent  provision)  that  has  been
favorably  recommended  to  the  shareholders  by  resolution  of the  Board  of
Directors  adopted by the  affirmative  vote of not less than a majority  of the
entire Board of Directors.
    
                                   ARTICLE XII

         The Board of Directors of the Corporation, when evaluating any offer or
proposal  of  another  party  to make a tender  offering  or  exchange  offer or
comparable  offer  for any  equity  security  of the  Corporation,  to  merge or
consolidate the Corporation with another corporation or to purchase or otherwise
acquire all or a substantial  part of the assets of the  Corporation or to enter
into any similar type of transaction,  shall, in connection with the exercise of
its judgment in determining what is in the best interests of the Corporation and
its shareholders,  give due consideration to the effect of such a transaction on
all relevant factors,  including without limitation (a) the consideration  being
offered in relation to the Board of Directors' estimate of (i) the current value
of the  Corporation  in a freely  negotiated  sale of either the  Corporation by
merger,  consolidation  or  otherwise,  or  all  or  substantially  all  of  the
Corporation's  assets,  (ii) the  current  value of the  Corporation  if orderly
liquidated, and (iii) the future value of the Corporation over a period of years
as an  independent  entity  discounted  to  current  value;  (b)  then  existing
political,  economic and other factors bearing on security  prices  generally or
the current  market value of the  Corporation's  securities in  particular,  (c)
whether the offer or proposal  might violate  federal,  state or local laws; (d)
social, legal and economic effects on the Corporation and its subsidiaries,  and
on policyholders,  employees,  suppliers,  customers,  and others having similar
relationships  with  them,  and the  communities  in which  they  conduct  their
businesses;  (e) the  financial  condition  and earning  prospects  of the party
making the offer or proposal, including such party's ability to service its debt
and  other  existing  or  likely  financial  obligations;  (f)  the  competence,
experience and integrity of the party making the offer or proposal; (g) the form
of the  consideration  offered,  as well as such other  factors as the Directors
deem  relevant.  Nothing  contained  in  this  Article  XII  shall  require  the
Corporation  or any  Director or officer to respond to any  particular  offer or
proposal.


                                       14



<PAGE>
                                                                       Exhibit C
                              AMENDED AND RESTATED

                                     BYLAWS

                                       OF
   
                                  LABONE, INC.
    
                            ARTICLE I - SHAREHOLDERS

     Section 1 - Place of Meetings.  All meetings of the  shareholders  shall be
held at the  principal  office  of the  corporation  in  Missouri,  except  such
meetings as the Board of Directors,  to the extent permissible by law, expressly
determines  shall be held  elsewhere,  in which case such meetings may, be held,
upon  notice  thereof as  hereinafter  provided,  at such other place or places,
within or without the State of Missouri,  as the Board of  Directors  shall have
determined,  and as shall be stated in such notice,  and,  unless  specifically,
prohibited  by law,  any meeting may be held at any place and time,  and for any
purpose,  if  consented to in writing by all the  shareholders  entitled to vote
thereat.

     Section 2 - Annual Meetings. An annual meeting of the shareholders to elect
directors and to transact such other  business as may properly be brought before
the meeting  shall be held each year on a date to be  determined by the Board of
Directors at its meeting to be held in February of each year.
   
     Section 3 - Special  Meetings.  Special meetings of the shareholders may be
called by the chairman of the board, by the president,  by the secretary, by the
Board  of  Directors,  or by  any  officer  directed  to do so by the  Board  of
Directors.  Shareholders' requests for a special meeting shall be in writing and
shall state the nature of the business desired to be transacted and shall comply
with Article VI of these Bylaws. The "call"and the "notice" of any such meeting
shall be deemed to be synonymous.
    
     Section 4 - Notice.  Written  or  printed  notice  of each  meeting  of the
shareholders,  whether annual or special, stating the place, day and hour of the
meeting  and, in case of a special  meeting,  the  purpose or purposes  thereof,
shall be delivered or given to each shareholder entitled to vote thereat, either
personally or by mail,  not less than ten (10) days or more than fifty (50) days
prior to the meeting unless, as to a particular matter,  other or further notice
shall be given. In addition to such written or printed notice,  published notice
shall be given if (and in the manner) then required by law.

     Any notice of a  shareholders'  meeting  sent by mail shall be deemed to be
delivered when deposited in the United States mail with postage  thereon prepaid
addressed to the  shareholder at his address as it appears on the records of the
corporation.


<PAGE>
   
     Section 5 - Presiding  Officials.  Every meeting of the  shareholders,  for
whatever  object,  shall be convened and presided over by either the  president,
the  chairman  of the board or, in their  absence,  by any vice  president.  The
officer  presiding  over any such  meeting  shall have the  authority on his own
motion to adjourn the meeting from time to time.

     Section 6 - Business at Annual  Meetings.  No business may be transacted at
an annual  meeting  of  shareholders,  other  than  business  that is either (i)
specified in the notice of meeting (or any  supplement  thereto)  given by or at
the  direction  of the  Board of  Directors  (or any duly  authorized  committee
thereof), (ii) otherwise properly brought before the annual meeting by or at the
direction of the Board of Directors (or any duly authorized  committee  thereof)
or (iii) otherwise properly brought before the annual meeting by any shareholder
of record of the  corporation  who is entitled  to vote at such  meeting and who
complies with the notice procedures set forth in Article VI of these Bylaws. Any
business to be brought before the annual meeting by any shareholder must also be
a proper matter for shareholder action.

     Section 7 - Business which may be Transacted at Special Meetings.  Business
transacted at all special  meetings shall be confined to the purposes  stated in
the notice of such meeting.
    
     Section 8 - Quorum of Shareholders.  Except as otherwise provided by law or
by the Articles of Incorporation,  a majority of the outstanding shares entitled
to vote at any  meeting  represented  in person or by proxy shall  constitute  a
quorum at a meeting of the  shareholders,  but less than a quorum shall have the
right  successively  to adjourn the meeting to a specified  date not longer than
ninety  (90) days after such  adjournment,  and no notice  need be given of such
adjournment to shareholders not present at the meeting.
   
     Section 9 - Voting of Shareholders. Subject to the right to elect directors
by cumulative voting, each shareholder shall be entitled to as many votes on any
proposition as he has shares of stock in the  corporation,  and he may vote them
in  person  or by  proxy.  Such  proxy  shall be in  writing,  or in such  other
transmitted form as may be acceptable to the Secretary, and shall state the name
of the person  authorized to cast such vote and the date of the meeting at which
such vote shall be cast,  and no such proxy shall be valid unless the same shall
have been given  within  sixty (60) days prior to the meeting at which such vote
is to be cast and shall be filed with the  Secretary  at or previous to the time
of the meeting and before the votes are cast.
    
     If the Board of Directors does not close the transfer books or set a record
date for the  determination  of the  shareholders  entitled to notice of, and to
vote at, a meeting of shareholders, only the shareholders of record at the close
of business on the  twentieth  day  preceding  the date of the meeting  shall be
entitled to notice of, and to vote at, the meeting  and any  adjournment  of the
meeting.

                                        2
<PAGE>

     Section  10 -  Registered  Shareholders  -  Exceptions  -  Stock  Ownership
Presumed.  The corporation  shall be entitled to treat the holders of the shares
of stock of the  corporation,  as recorded in the stock record or transfer books
of the  corporation,  as the  holders of record and as the holders and owners in
fact  thereof  and,  accordingly,  the  corporation  shall  not be  required  to
recognize  any equitable or other claim to or interest in any such shares on the
part of any other person, firm, partnership, corporation or association, whether
or not the corporation shall have express or other notice thereof,  except as is
otherwise  expressly  required by law, and the term shareholder as used in these
Bylaws means one who is a holder of record of shares of the corporation.

                             ARTICLE II - DIRECTORS
 
     Section 1 - Directors - Number and  Vacancies.  Unless and until changed by
the Board of  Directors  as  hereinafter  provided,  the number of  directors to
constitute  the Board of Directors  shall be the same number as that provided in
the Articles of Incorporation.  The Board of Directors,  to the extent permitted
by law, shall have the power to change the number of directors from time to time
provided  that any  notice  required  by law of any such  change is duly  given.
Directors need not be shareholders  unless the Articles of  Incorporation at any
time so provide.

     Vacancies on the Board of Directors  shall be filled for the unexpired term
by a majority of the  remaining  directors,  or, if they are unable to do so, by
vote of a majority of shareholders at an annual or special meeting.

     No director shall be removed from his office as a director by vote or other
action of shareholders  or otherwise  unless the director to be removed has been
convicted of a felony by a court of competent  jurisdiction  and such conviction
is no longer  subject to direct  appeal or unless the director to be removed has
been adjudged to be liable for  negligence or misconduct in the  performance  of
his  duty to the  corporation  by a court  of  competent  jurisdiction  and such
adjudication is no longer subject to direct appeal.
   
     Section 2 - Directors -  Classification.  The Board of  Directors  shall be
divided  into three  classes so that there shall be an annual  election for such
number or  proportion  of  directors  as may be found upon  dividing  the entire
number of directors by the number of years composing a term; provided,  however,
that at the first meeting of the  shareholders of the corporation  following the
adoption of this amended bylaw,  approximately one-third of the directors, to be
known as "Class  A",  shall be elected  for a term of office,  such term of such
Class  expiring  at the  next  following  annual  meeting  of the  shareholders;
approximately  one-third  of the  directors,  to be known as "Class B", shall be
elected  for a term of office,  such term of such Class  expiring  at the second
following annual meeting of the shareholders; and approximately one-third of the
directors, to be known as "Class C", shall be elected for a term of office, such
term of such Class expiring at the third following annual meeting. If the number
of    directors   is   not    evenly   divisible    into   three  classes,   the

                                        3
<PAGE>

     Board of Directors  shall determine which of the three classes shall have a
number of  members  differing  from the other two  classes.  At each  subsequent
annual meeting of  shareholders,  the successors to the Class of directors whose
terms shall  expire at that  meeting  shall be elected to hold office for a term
expiring at the third succeeding  annual meeting of shareholders.  If the number
of  directors  is changed,  any newly  created  directorship  or any decrease in
directorships  shall be apportioned  among the classes so as to make all classes
as nearly equal in number as possible;  provided,  that no decrease in the Board
shall shorten the term of any incumbent director.
    
     A director elected by the Board to fill a vacancy shall hold office for the
unexpired portion of the term of the director whose place he has been elected to
fill,  which  term may  extend  beyond  the next  succeeding  annual  meeting of
shareholders following the election of such director.
   
     Section 3 - Directors - Employment Qualifications.  "Inside director" shall
be  defined  as any  director  who is  also  at that  time  an  employee  of the
corporation, or any subsidiary thereof. The term of office of any person serving
as an "inside  director" shall cease  immediately upon termination of employment
with the corporation and all subsidiaries thereof for any reason.
    
     Section  4 -  Powers  of  the  Board.  The  property  and  business  of the
corporation shall be controlled and managed by the directors, acting as a Board.
The  Board  shall  have  and  is  vested  with  all  and  unlimited  powers  and
authorities,  except  as may be  expressly  limited  by  law,  the  Articles  of
Incorporation  or these  Bylaws,  to do or  cause to be done any and all  lawful
things  for and in  behalf  of the  corporation,  to  exercise  or  cause  to be
exercised any or all of its powers,  privileges, and franchises, and to seek the
effectuation of its objects and purposes.
   
     Section 5 - Regular  Meetings.  Regular  meetings of the Board of Directors
shall  be  held  following  the   adjournment  of  the  Annual  Meeting  of  the
Shareholders on the same date and in the months of February, August and November
of each year; provided, however, that at any regular meeting, special meeting or
by action taken by written consent of all Directors,  severally or collectively,
without a meeting, the Board of Directors may set a date in some other month for
the next succeeding regular meeting. The regular meetings shall be at a time set
by notice  mailed  or  telegraphed  to each  director  at least  two days  prior
thereto.  Notice of any regular  meeting of the Board of Directors may be waived
in  writing or by  telegram  before or after the  meeting  and  attendance  of a
director at a meeting shall be deemed a waiver of notice except where a director
attends a meeting for the express purpose of objecting to the transaction of any
business  because the meeting is not lawfully  called or  convened.  Neither the
business to be  transacted  at, nor the  purpose of, any regular  meeting of the
Board of  Directors  need be  specified  in the  notice or waiver of notice of a
meeting. Any business may be transacted at a regular meeting.
    

                                        4

<PAGE>
   
     Section 6 - Special  Meetings.  Special  meetings of the Board of Directors
shall be held at such  time and  place as is  specified  in the  notice  of such
meeting and shall be called by the  chairman of the board,  the  president,  the
secretary,  any vice president,  or a majority of the entire Board of Directors.
Notice of any such meeting  shall be given  personally or by mail or telegram to
each member of the Board at least two hours prior to the  scheduled  time of the
meeting,  but such notice may be waived in writing or by telegram  either before
or after the meeting,  and  attendance  at the meeting by any director  shall be
deemed a waiver of such notice.
    
     Special  meetings  of the  Board  of  Directors  may be  held by  means  of
telephone  conferences or equipment of similar  communications by means of which
all directors participating in the meeting can hear each other. Participating in
a meeting by  telephone or similar  communications  equipment  shall  constitute
presence in person at the special meeting,  except where a director participates
in a  meeting  for the sole  purpose  of  objecting  to the  transaction  of any
business  on the ground  that the special  meeting is not  lawfully  convened or
called.

     Section  7 -  Quorum.  A  majority  of the full  Board of  Directors  shall
constitute a quorum for the transaction of business,  but less than a quorum may
adjourn from time to time until a quorum is obtained. The act of the majority of
the directors present at a meeting at which a quorum is present shall be the act
of the Board of Directors.

     Section 8 - Action  without a Meeting.  If all the  directors  severally or
collectively consent in writing to any action to be taken by the directors, such
consents  shall  have the same  force  and  effect  as a  unanimous  vote of the
directors at a meeting duly held.  The  secretary  shall file such consents with
the minutes of the meetings of the Board of Directors.

     Section 9 - Consulting Directors. The Board of Directors may appoint to the
office of  consulting  director any person whose  abilities  and interest in the
corporation,  in the opinion of the Board,  qualify him to render service to the
Board.  Such  consulting  directors may receive notice of and attend meetings of
the Board of Directors, shall have no vote in the affairs of the corporation and
shall not be counted for the purposes of determining a quorum or majority of the
Board for any  purpose.  Such  consulting  directors  shall serve in an advisory
capacity  to the Board of  Directors  only and no  action of the Board  shall be
invalid because of the failure of any such consulting director to receive notice
of or to attend any  meeting of the Board or to be  informed of or to approve of
any action taken by the Board of Directors.

     Section 10 - Executive Committee. The Board of Directors may, by resolution
or resolutions adopted by a majority of the whole Board of Directors,  designate
an executive  committee,  such  committee to consist of two or more directors of
the corporation,  which committee,  to the extent provided in said resolution or
resolutions,  shall have and may exercise  all of the  authority of the Board of
Directors in the management of the corporation;

                                        5
<PAGE>

provided,   however,   that   the   designation   of  such  committee   and  the
delegation  thereto of  authority  shall not  operate  to  relieve  the Board of
Directors,  or any member thereof, of any responsibility  imposed upon it or him
by law.

     The  executive  committee  shall keep regular  minutes of its  proceedings,
which minutes shall be recorded in the minutes of the corporation. The secretary
or an  assistant  secretary  of the  corporation  may act as  secretary  for the
committee if the committee so requests.

     Section 11 - Other  Committees.  The Board of  Directors  shall  appoint an
Audit  Committee  and fix its duties,  and may from time to time appoint and fix
the duties of such  additional  committees as they, in their  discretion,  shall
deem  necessary  or  advisable  for the  proper  operation  of the  corporation,
including a  committee  or  committees  which  shall have  authority  to approve
salaries and increases in salaries for elected officers of the corporation.

     Section  12  -  Compensation  of  Directors  and  Committee  Members.  Each
director, as such, shall be entitled to receive reimbursement for his reasonable
expenses  incurred  in  attending  meetings  of the  Board of  Directors  or any
committee  thereof or otherwise in connection  with his attention to the affairs
of the  corporation.  In  addition,  each  director,  who  is not at the  time a
regularly  compensated  officer or  employee  of the  corporation  or any of its
subsidiaries,  shall be entitled to such fee for his services as a director (and
if a  member  of any  committee  of the  Board  of  Directors,  such fee for his
services  as such  member)  as may be fixed  from  time to time by the  Board of
Directors.  Such fees may be fixed both for  meetings  attended and on an annual
basis,  or either  thereof,  and may be payable  currently or deferred.  Nothing
herein contained shall be construed to preclude any director or committee member
from serving the  corporation or any of its  subsidiaries  in any other capacity
and receiving compensation therefor.

                             ARTICLE III - OFFICERS
   
     Section  1  -  Officers  -  Who  shall  Constitute.  The  officers  of  the
corporation  shall be a chairman  of the board,  a  president,  one or more vice
presidents,  a  secretary  and a  treasurer.  The Board shall elect or appoint a
president and secretary at its annual  meeting held after each annual meeting of
the  shareholders.  The  Board  then,  or from time to time,  may also  elect or
appoint one or more of the other prescribed officers or any other officers as it
shall deem  advisable,  but need not elect or appoint any officers  other than a
president  and a secretary.  The Board may, if it desires,  further  identify or
describe any one or more of such officers.
    
     The  officers  of the  corporation  need  not be  members  of the  Board of
Directors.  Any two or more offices may be held by the same  person,  except the
office of president and secretary.

                                        6
<PAGE>

     An officer shall be deemed  qualified when he enters upon the duties of the
office to which he has been elected or appointed and furnishes any bond required
by the  Board;  but the  Board  may also  require  of such  person  his  written
acceptance and promise faithfully to discharge the duties of such office.

     Section 2 - Term of Office.  Each officer of the corporation shall hold his
office at the pleasure of the Board of Directors or for such other period as the
Board may specify at the time of his election or appointment or until his death,
resignation or removal by the Board,  whichever first occurs.  In any event, the
term of office of each  officer  of the  corporation  holding  his office at the
pleasure of the Board shall  terminate  at the annual  meeting of the Board next
succeeding  his  election  or  appointment  and  at  which  any  officer  of the
corporation is elected or appointed,  unless the Board provides otherwise at the
time of his election or appointment.

     Section 3 - Removal. Any officer or agent elected or appointed by the Board
of  Directors,  and any  employee,  may be  removed or  discharged  by the Board
whenever in its judgment the best interests of the  corporation  would be served
thereby,  but such removal shall be without prejudice to the contract rights, if
any, of the person so removed.

     Section 4 - Salaries and  Compensation.  Salaries and  compensation  of all
elected or appointed  officers and of all employees of the corporation  shall be
fixed, increased or decreased by the Board of Directors,  but this power (except
as to the salary or compensation of the chairman of the board and the president)
may, unless  prohibited by law, be delegated by the Board to the chairman of the
board, the president, a committee or such other officer or officers as the Board
may find convenient to so empower.

     Section 5 -  Delegation  of  Authority  to Hire,  Discharge  and  Designate
Duties. The Board may, from time to time, delegate to the chairman of the board,
the  president  or other  officer or  executive  employees  of the  corporation,
authority  to hire,  discharge  and fix and modify the  duties,  salary or other
compensation of employees of the corporation under their  jurisdiction,  and the
Board may delegate to such officer or executive  employee similar authority with
respect  to  obtaining  and  retaining  for  the  corporation  the  services  of
attorneys, accountants and other experts.

     Section  6 - The  Chairman  of the  Board.  If a  chairman  of the board be
elected  or  appointed,  he shall,  except as  otherwise  provided  for in these
Bylaws,  preside at all meetings of the directors at which he may be present and
shall  have  such  other  duties,  powers  and  authority  as may be  prescribed
elsewhere  in these  Bylaws.  The Board of  Directors  may  delegate  such other
authority and assign such additional duties to the chairman of the board,  other
than those conferred by law  exclusively  upon the president as it may from time
to time  determine,  and,  to the  extent  permissible  by law,  the  Board  may
designate  the  chairman  of the board as the  chief  executive  officer  of the
corporation  under  these  Bylaws,  or it may,  from  time to time,  divide  the
responsibilities,   duties  and    authority  for   the   general  control   and

                                        7
<PAGE>

management   of   the  corporation's  business and affairs  between the chairman
of the board and the president.

     Section  7 - The  President.  Unless  the  Board  otherwise  provides,  the
president  shall be the chief  executive  officer of the  corporation  with such
general executive powers and duties of supervision and management as are usually
vested in the  office of the chief  executive  officer of a  corporation  and he
shall carry into effect all directions and  resolutions of the Board.  Except as
otherwise  provided for in these  Bylaws,  the  president  shall  preside at all
meetings of the shareholders. In the absence of the chairman of the board, or if
there be no  chairman  of the board,  the  president  also shall  preside at all
meetings of the Board of Directors.

     The  president may execute all bonds,  notes,  debentures,  mortgages,  and
other contracts  requiring a seal,  under the seal of the  corporation,  and may
cause the seal to be affixed  thereto,  and may also  execute  any and all other
instruments for and in the name of the corporation.

     Unless  the  Board  otherwise  provides,  the  president,   or  any  person
designated in writing by him, may (i) attend  meetings of  shareholders of other
corporations  to represent this  corporation  thereat and to vote or take action
with respect to the shares of any such corporation  owned by this corporation in
such manner as he or his  designee may  determine,  and (ii) execute and deliver
waivers  of  notice  and  proxies  for and in the name of the  corporation  with
respect to any such shares owned by this corporation.

     He shall,  unless the Board otherwise  provides,  be ex officio a member of
all standing committees.

     If a chairman of the board be elected or appointed  and  designated  as the
chief executive  officer of the  corporation,  as provided in these Bylaws,  the
president shall perform such duties as may be  specifically  delegated to him by
the Board of Directors and as are conferred by law exclusively  upon him, and in
the absence,  disability  or inability to act of the chairman of the board,  the
president  shall  perform the duties and  exercise the powers of the chairman of
the board.

     Section  8 - Vice  Presidents.  The vice  presidents  in the order of their
seniority,  as determined  by the Board,  shall,  in the absence,  disability or
inability to act of the president, perform the duties and exercise the powers of
the  president,  and shall  perform  such other duties as the Board of Directors
shall from time to time prescribe.

     Section 9 - The Secretary and Assistant  Secretaries.  The secretary  shall
attend  all  meetings  of the  shareholders,  and  shall  record  or cause to be
recorded all votes taken and the minutes of all  proceedings in a minute book of
the corporation to be kept for that

                                        8
<PAGE>

     purpose.  He shall perform like duties for the executive and other standing
committees  when  purpose.  He shall  perform like duties for the  executive and
other standing  committees  when requested by the Board or any such committee to
do so.

     He shall see that all books, records, lists and information,  or duplicates
required to be  maintained at the principal  office for the  transaction  of the
business of the corporation in Missouri, or elsewhere, are so maintained.

     He shall keep in safe  custody the seal of the  corporation,  and when duly
authorized  to do so, shall affix the same to any  instrument  requiring it, and
when so affixed, he shall attest the same by his signature.

     He shall perform such other duties and have such other  authority as may be
prescribed  elsewhere  in  these  Bylaws  or from  time to time by the  Board of
Directors or the chief executive officer of the corporation,  under whose direct
supervision he shall be.

     He  shall  have  the  general  duties,  powers  and  responsibilities  of a
secretary of the corporation.

     Any assistant secretary, in the absence,  disability or inability to act of
the secretary,  may perform the duties and exercise the powers of the secretary,
and shall  perform such other duties and have such other  authority as the Board
of Directors may, from time to time, prescribe.

     Section 10 - The Treasurer and Assistant  Treasurers.  The treasurer  shall
have  responsibility  for the  safekeeping  of the funds and  securities  of the
corporation,  shall keep or cause response to be kept full and accurate accounts
of receipts and  disbursements  in books  belonging to the corporation and shall
keep, or cause to be kept, all other books of account and accounting  records of
the corporation.  He shall deposit or cause to be deposited all moneys and other
valuable  effects  in the  name and to the  credit  of the  corporation  in such
depositories  as may be  designated by the board of directors or by any officers
of the  corporation  to whom such  authority  has been  granted  by the Board of
Directors,

     He shall disburse, or permit to be disbursed,  the funds of the corporation
as may be ordered,  or authorized  generally,  by the Board, and shall render to
the chief executive  officer of the corporation and the directors  whenever they
may require it, an account of all his  transactions  as  treasurer  and of those
under his jurisdiction, and of the financial condition of the corporation.

     He shall perform such other duties and shall have such other responsibility
and  authority  as may be  prescribed  elsewhere in these Bylaws or from time to
time by the Board of Directors.

                                        9
<PAGE>

     He shall have the general duties,  powers and responsibility of a treasurer
of a corporation,  and shall,  unless  otherwise  provided by the Board,  be the
chief financial and accounting officer of the corporation.

     Any assistant treasurer, in the absence,  disability or inability to act of
the treasurer,  may perform the duties and exercise the powers of the treasurer,
and shall  perform such other duties and have such other  authority as the Board
of Directors may, from time to time, prescribe.

     Section 11 - Duties of  Officers  may be  Delegated.  If any officer of the
corporation  be absent or unable to act, or for any other  reason that the Board
may deem sufficient,  the Board may delegate, for the time being, some or all of
the functions,  duties,  powers and responsibilities of any officer to any other
officer,  or to any  other  agent  or  employee  of  the  corporation  or  other
responsible person,  provided a majority of the whole Board of Directors concurs
therein.

                                   ARTICLE IV

                        INDEMNIFICATION AND LIABILITY OF
                        DIRECTORS, OFFICERS AND EMPLOYEES

     Section 1 -  Indemnification.  A.  Each  person  who is or was a  director,
officer or  employee of the  corporation  or is or was serving at the request of
the  corporation  as a director,  officer or  employee  of another  corporation,
partnership,  joint  venture,  trust or other  enterprise  (including the heirs,
executors,  administrators or estate of such person) shall be indemnified by the
corporation  as of right to the full extent  permitted or authorized by the laws
of the State of Missouri, as now in effect and as hereafter amended, against any
liability, judgment fine, amount paid in settlement, cost and expense (including
attorneys'  fees) asserted or threatened  against and incurred by such person in
his capacity as or arising out of his status as a director, officer, or employee
of the  corporation  or, if serving  at the  request  of the  corporation,  as a
director,  officer  or  employee  of  another  corporation,  partnership,  joint
venture, trust or other enterprise.  The indemnification  provided by this Bylaw
provision shall not be exclusive of any other rights to which those  indemnified
may be  entitled  under  any  other  bylaw  or  under  any  agreement,  vote  of
shareholders or disinterested directors or otherwise, and shall not limit in any
way any right  which  the  corporation  may have to make  different  or  further
indemnifications  with  respect to the same or  different  persons or classes of
persons.

     B. Without  limiting the foregoing,  the corporation is authorized to enter
into an agreement with any person who is a director,  officer or employee of the
corporation,  or is serving at the request of the  corporation as a non-employee
director of another  corporation,  partnership,  joint  venture,  trust or other
enterprise,   providing   indemnification  for  such  person  against  expenses,
including     attorneys'     fees,     judgments,     fines     and      amounts

                                       10
<PAGE>

paid   in   settlement  that result from  any  threatened,  pending or completed
action,  suit  or  proceeding,   whether  civil,  criminal,   administrative  or
investigative,  including any action by or in the right of the corporation, that
arises by reason of the fact that such person is or was a  director,  officer or
employee of the corporation,  or, if not a director,  officer or employee of the
corporation,  is or was serving at the request of the corporation as a director,
officer or employee of another corporation, partnership, joint venture, trust or
other  enterprise,  or  as  a  non-employee  director  of  another  corporation,
partnership,  joint  venture,  trust or  other  enterprise,  to the full  extent
allowed by law, whether or not such indemnification  would otherwise be provided
for in this Bylaw, except that no such agreement shall indemnify any person from
or on account of such person's  conduct which was finally  adjudged to have been
knowingly fraudulent deliberately dishonest or willful misconduct.

     C. For the  purposes  of  Section  1B of  Article  IV,  any person who is a
director,  officer or employee of the corporation who shall serve as a director,
officer or employee of another corporation,  partnership joint venture, trust or
other  enterprise,  more than 50% of the  voting  stock of which is owned by the
corporation, and any other person who shall serve as a non-employee director of.
another corporation, partnership, joint venture, trust or other enterprise, more
than 50% of the voting of stock of which is owned by the  corporation,  shall be
deemed to be serving in such capacity at the request of the corporation,  unless
the Board of Directors of the  corporation  shall  determine  otherwise.  In all
other instances where any person shall serve as a director or officer of another
corporation,  joint venture,  trust or other enterprise of which the corporation
is or  was a  shareholder  or  creditor,  or in  which  it is or  was  otherwise
interested,  if it is not  otherwise  established  that  such  person  is or was
serving as such director or officer at the request of the corporation, the Board
of Directors of the corporation may determine  whether such service is or was at
the request of the corporation, and it shall not be necessary to show any actual
or prior request for such service.  A person is a  "non-employee  director" of a
corporation,  partnership, joint venture, trust or other enterprise if he or she
is a  director,  but not an  employee of such  corporation,  partnership,  joint
venture, trust or other enterprise.

     Section 2 - Insurance.  The corporation may purchase and maintain insurance
on behalf of any person who is or was a  director,  officer or  employee  of the
corporation,  or is or was  serving  at the  request  of  the  corporation  as a
director,  officer  or  employee  of  another  corporation,  partnership,  joint
venture,  trust or other enterprise,  against any liability asserted against him
and incurred by him in any such capacity,  or arising out of his status as such,
whether or not the  corporation  would have the power to  indemnify  him against
such liability under the provisions of these Bylaws.

     Section 3 - Liability. No person shall be liable to the corporation for any
loss, damage, liability or expense suffered by it on account of any action taken
or  omitted  to be  taken  by him as a  director,  officer  or  employee  of the
corporation or of any other corporation  which he serves as a director,  officer
or employee at the request of the corporation,  if such person (i) exercised the
same   degree   of   care   and   skill   as a  prudent man would have exercised

                                       11
<PAGE>

under  the  circumstances  in  the conduct of his  own affairs,  or (ii) took or
omitted  to take  such  action  in  reliance  upon  advice  of  counsel  for the
corporation,  or  for  such  other  corporation,  or  upon  statements  made  or
information  furnished  by  directors,  officers,  employees,  or  agents of the
corporation.  or of such other corporation which he had no reasonable grounds to
disbelieve.

                            ARTICLE V - CAPITAL STOCK

     Section 1 - Issuance of  Certificates.  Shares of the capital  stock of the
corporation may be represented by entry on the stock record or transfer books of
the  corporation  and need not be  represented by  certificates.  When shares of
stock of the  corporation  are represented by  certificates,  such  certificates
shall be numbered,  shall be in such form as may be  prescribed  by the Board of
Directors in conformity with law, and shall be entered in the stock books of the
corporation as they are issued.  Such entries shall show the name and address of
the  person,  firm,  partnership,   corporation  or  association  to  whom  each
certificate is issued.  Each  certificate  shall have printed,  typed or written
thereon the name of the person, firm, partnership, corporation or association to
whom it is issued  and the  number of shares  represented  thereby.  It shall be
signed by at least one of either the Chairman of the Board,  the  President or a
Vice President and also by one of either the Secretary or an Assistant Secretary
or the  Treasurer or an Assistant  Treasurer  of the  corporation,  and shall be
sealed with the seal of the corporation,  which seal may be facsimile,  engraved
or printed.  If the  corporation  has a transfer  agent or a transfer  clerk who
signs such  certificates,  the signatures of the Chairman of the Board or any of
the officers above mentioned may be facsimile,  engraved or printed. In case the
Chairman of the Board or any officer who has signed or whose facsimile signature
has been placed upon any such certificate shall have ceased to hold the position
or office specified on the certificate  before such certificate is issued,  such
certificate may  nevertheless be issued by the corporation  with the same effect
as if the individual held the position or office at the date of its issue.

     Section 2 - Transfers of Shares - Transfer Agent  -Registrar.  Transfers of
shares of stock  shall be made on the  stock  record  or  transfer  books of the
corporation  only  by the  person  named  in the  stock  certificate,  or by his
attorney lawfully  constituted in writing, and upon surrender of the certificate
therefor.  The stock  record  book and other  transfer  records  shall be in the
possession  of the  secretary or of a transfer  agent or transfer  clerk for the
corporation. The corporation, by resolution of the Board, may from time to time,
appoint a transfer agent or transfer clerk, and, if desired, a registrar,  under
such  arrangements  and upon  such  terms  and  conditions  as the  Board  deems
advisable,  but until and unless the Board  appoints some other person,  firm or
corporation  as its transfer agent or transfer clerk (and upon the revocation of
any such appointment, thereafter until a new appointment is similarly made), the
secretary of the  corporation  shall be the transfer  agent or transfer clerk of
the corporation without the necessity of any formal action of the Board, and the
secretary,  or any person  designated  by him,  shall  perform all of the duties
thereof.

                                       12
<PAGE>

     Section 3 - Lost  Certificates.  In case of the loss or  destruction of any
certificate for shares of stock of the corporation, another may be issued in its
place  upon  proof  of  such  loss or  destruction  and  upon  the  giving  of a
satisfactory  bond of indemnity to the  corporation  and the transfer  agent and
registrar  of such  stock,  if any,  in such sum as the Board of  Directors  may
provide;  provided,  however,  that  a new  certificate  may be  issued  without
requiring a bond when, in the judgment of the Board, it is proper so to do.

     Section  4 -  Regulations.  The Board of  Directors  shall  have  power and
authority  to make all  such  rules  and  regulations  as it may deem  expedient
concerning the issue,  transfer,  conversion and  registration  of and all other
rights  pertaining to certificates for shares of stock of the  corporation,  not
inconsistent  with the laws of Missouri,  the Articles of Incorporation or these
Bylaws.
   
                                   ARTICLE VI
                    ADVANCE NOTICE OF SHAREHOLDER NOMINATIONS
                            AND SHAREHOLDER PROPOSALS

     Section 1 - Who May Nominate.  Only persons who are nominated in accordance
with the following procedures shall be eligible for election as directors of the
corporation at any meeting of shareholders at which directors are to be elected.
Nominations of persons for election to the Board of Directors may be made at any
such meeting of shareholders (i) by or at the direction of the Board of Director
(or any duly authorized  committee thereof) or (ii) by any shareholder of record
of the corporation who would be entitled to vote in the election of directors at
such meeting held on the date of such shareholder's  nomination and who complies
with the notice procedures set forth in Section 2. If such shareholder ceases to
be a shareholder entitled to vote for elections of directors prior to the record
date for the meeting at which the nomination  would arise,  the nomination shall
be deemed to be withdrawn.

     Section 2 - Shareholder Nominations.  If a shareholder proposes to nominate
one or more candidates for election as directors at a meeting of shareholders at
which  directors  are to be elected,  the  shareholder  must give timely  notice
thereof in proper written form to the Secretary of the corporation,  in addition
to  complying  with  any  other  applicable  requirements.  To  be  timely,  the
shareholder's  notice  must  be  delivered  to the  Secretary  at the  principal
executive offices of the corporation not less than ninety days prior to the date
scheduled  for  such  meeting;  provided,  however,  that if  notice  or  public
announcement  of the scheduled date of the meeting is not given or made at least
one  hundred  (100)  days  prior to the date  scheduled  for the  meeting,  such
shareholder's  notice must be so  delivered to the  Secretary  not more than ten
(10) days  following  the day on which such notice of meeting was mailed or such
public  announcement  was made,  whichever  is  earlier.  In no event  shall the
postponement,  deferral or adjournment of a shareholders' meeting commence a new
time period for the giving of notice by a shareholder  as described  above.  For
purposes of this Section, "public announcement" shall mean disclosure in a press
release  reported by the Dow Jones News Service,  Associated Press or comparable
national   news  service   or  in  a document

                                       13
<PAGE>

publicly  filed   by   the  corporation   with   the   Securities  and  Exchange
Commission pursuant to Section 13, 14 or 15(d) of the Exchange Act.

     To be in proper written form, a shareholder's  notice to the Secretary must
set forth (i) as to each person whom the  shareholder  proposes to nominate  for
election as a director (A) the name, age, business address and residence address
of the person, (B) the principal occupation or employment of the person, (C) the
class and number of shares of capital  stock of the  corporation  that are owned
beneficially  and owned of record by the  person  and (D) any other  information
concerning  the  person  that  would  be  required  to be  disclosed  in a proxy
statement or other filings in connection  with the  solicitation  of proxies for
the  election of such person as a director  under  Section 14 of the  Securities
Exchange Act of 1934, as amended from time to time (the "Exchange Act"), and the
rules and  regulations  promulgated  thereunder;  and (ii) as to the shareholder
giving  ,  the  notice  (A)  the  name  and  address,  as  they  appear  on  the
corporation's  books,  of such  shareholder,  (B) the  name and  address  of the
beneficial  owner, if any, on whose behalf the  nomination(s)  are made, (C) the
class and number of shares of capital  stock of the  corporation  that are owned
beneficially  and owned of record by such  shareholder  and any such  beneficial
owner,  (D) a description of all  arrangements  or  understandings  between such
shareholder or beneficial owner and each proposed nominee or any other person or
persons  (including their names) pursuant to which the  nomination(s)  are to be
made  by  such  shareholder  and  (E) any  other  information  relating  to such
shareholder  or  beneficial  owner that would be required to be  disclosed  in a
proxy  statement  or  other  filings  required  to be  made in  connection  with
solicitations of proxies for the election of directors pursuant to Section 14 of
the  Exchange Act and the rules and  regulations  promulgated  thereunder.  Such
notice must be  accompanied  by a written  consent of each  proposed  nominee to
being named as a nominee and to serve as a director if elected.

     Section 3 -  Shareholder  Proposals.  If a  shareholder  proposes  to bring
business before an annual meeting of  shareholders,  the  shareholder  must give
timely  notice   thereof  in  proper  written  form  to  the  Secretary  of  the
corporation, in addition to complying with any other applicable requirements. To
be timely,  a  shareholder's  notice must be delivered  to the  Secretary at the
principal  executive  offices of the corporation  within the period specified in
Section 2 of this  Article.  In no event  shall the  postponement,  deferral  or
adjournment of a shareholders' meeting commence a new time period for the giving
of notice by a shareholder.

     To be in proper written form, a shareholder's  notice to the Secretary must
set forth (i) a brief  description of the proposal  desired to be brought before
the annual  meeting and the reasons for  conducting  such business at the annual
meeting,  (ii) the name and address, as they appear on the corporation's  books,
of such shareholder, (iii) the name and address of the beneficial owner, if any,
on whose  behalf of  proposal  is made,  (iv) the class and  number of shares of
capital stock of the corporation that are owned beneficially and owned of record
by such  shareholder  and any such  beneficial  owner,  (v) a description of all
arrangements or understandings  between such shareholder or beneficial owner and
any other  person or persons  (including  their  names) in  connection  with the
proposal of such business by such

                                       14
<PAGE>

shareholder, (vi)  a   description  of  any material financial or other interest
of such  shareholder  or  beneficial  owner in such proposal and (vii) any other
information  that  would  be  required  to be  disclosed  in a  proxy  statement
soliciting  proxies for approval of the  proposal  pursuant to Section 14 of the
Exchange Act and the rules and regulations promulgated thereunder.

     Section 4 - Additional Information. The Board of Directors, or a designated
committee  thereof,  may reject any  shareholder's  nomination or  shareholder's
proposal  which is not timely made in  accordance  with the  provisions  of this
Article  VI. If the  Board of  Directors,  or a  designated  committee  thereof,
determines  that the  information  provided in a  shareholder's  notice does not
comply with the  requirements  of this Article VI in any material  respect,  the
Secretary of the corporation shall notify the shareholder of the deficiency. The
shareholder  shall  have an  opportunity  to cure the  deficiency  by  providing
additional  information to the Secretary within five (5) days from the date such
deficiency  notice  is given to the  shareholder,  or such  shorter  time as may
reasonably be deemed appropriate by the Board or committee. If the deficiency is
not cured  within such period,  or if the Board of  Directors or such  committee
determines that the additional information provided by the shareholder, together
with the information  previously provided,  does not satisfy the requirements of
this  Article  VI in any  material  respect,  then  the  Board of  Directors  or
committee may reject such shareholder's notice.

     Section 5 -  Determinations.  Notwithstanding  the  procedures set forth in
Section 4 of this Article  hereof,  if the Board of  Directors or any  committee
thereof  does not make a  determination  as to  whether a  shareholder's  notice
complies with the  provisions  of this Article VI, the presiding  officer of the
meeting  shall make the  determination  and declare at the  meeting  whether the
shareholder  has so  complied.  If the  presiding  officer  determines  that the
shareholder has not so complied, then unless the presiding officer in his or her
sole and absolute  discretion waives such  noncompliance,  the presiding officer
shall declare at the meeting that the  shareholder's  nomination or proposal was
not properly made and the defective  nomination or shareholder proposal shall be
disregarded.
    
                              ARTICLE VII - GENERAL

     Section 1 - Fixing of  Capital -  Transfers  of  Surplus.  Except as may be
specifically  otherwise provided in the Articles of Incorporation,  the Board of
Directors is expressly  empowered to exercise all authority conferred upon it or
the corporation by any law or statute, and in conformity therewith, relative to:

     A. the determination of what part of the consideration  received for shares
of the corporation shall be stated capital;

     B. increasing stated capital;

     C. transferring surplus to stated capital;

                                       15
<PAGE>

     D. the consideration to be received by the corporation for its shares; and

     E. all similar or related matters

provided  that  any  concurrent action  or consent by  or of the corporation and
its  shareholders  required to be taken or given  pursuant to law, shall be duly
taken or given in connection therewith.

     Section  2 -  Dividends.  Dividends  upon  the  outstanding  shares  of the
corporation,  subject to the provisions of the Articles of Incorporation  and of
any  applicable  law,  may be declared by the Board of Directors at any meeting.
Dividends  may be paid in cash,  in property,  or in shares of the  corporations
stock.

     Liquidating  dividends or dividends  representing a distribution of paid-in
surplus  or a return  of  capital  shall  be made  only  when and in the  manner
permitted by law.

     Section 3 - Checks.  All checks and similar  instruments for the payment of
money  shall be signed by such  officer  or  officers  or such  other  person or
persons as the Board of Directors  may from time to time  designate.  If no such
designation  is made,  and unless and until the Board  otherwise  provides,  the
president and secretary or the president and treasurer, shall have power to sign
all such instruments for, in behalf and in the name of the corporation which are
executed or made in the ordinary course of the corporation's business.

     Section 4 - Records. The corporation shall cause to be maintained either at
its  principal  place of business or at the  offices of a duly  appointed  stock
transfer agent and registrar, books in which shall be recorded the number of its
shares  subscribed,  the names of the owners of its shares, the numbers owned of
record by them,  respectively,  the amount of shares paid,  and by whom, and the
transfer of said shares with the date of transfer.  The  corporation  shall also
keep at its principal  place of business  records  indicating  the amount of its
assets and  liabilities  and the names and places of residence of its  officers,
and from time to time such other or additional  records,  statements,  lists and
information as may be required by law, including shareholders' lists.
   
     Section 5 - Inspection  of Records.  A  shareholder,  if he be entitled and
demands to inspect the records of the  corporation  pursuant to any statutory or
other legal right,  shall be  privileged to inspect such records only during the
usual and  customary  hours of  business  and in such  manner as will not unduly
interfere  with the  regular  conduct  of the  business  of the  corporation.  A
shareholder  may  delegate  his  right  of  inspection  to  a  certified  public
accountant on the  condition,  to be enforced at the option of the  corporation,
that the shareholder and accountant agree with the corporation to furnish to the
corporation promptly a true and correct copy of each report with respect to such
inspection made by such accountant.  No shareholder shall use, permit to be used
or acquiesce in the use by others of

                                       16
<PAGE>

any   information  so   obtained   to   the   competitive   detriment   of   the
corporation,  nor shall he furnish or permit to be furnished any  information so
obtained to any competitor or  prospective  competitor of the  corporation.  The
corporation,  as a condition  precedent to any  shareholder's  inspection of the
records of the  corporation,  may  require  the  shareholder  to  indemnify  the
corporation,  in such  manner and for such  amount as may be  determined  by the
Board of  Directors,  against  any loss or damage  which may be  suffered  by it
arising out of or resulting from any  unauthorized  disclosure made or permitted
to be made by such  shareholder  of  information  obtained in the course of such
inspection.
    
     Section 6 - Corporate Seal. The corporate seal shall have inscribed thereon
the name of the corporation and the words: Corporate Seal - Missouri.  Said seal
may be used by causing it or a facsimile  thereof to be  impressed or affixed or
in any manner reproduced.

     Section 7 -  Amendments.  The Bylaws of the  corporation  may, from time to
time, be suspended,  repealed, amended or altered, or new Bylaws may be adopted,
in the manner provided in the Articles of Incorporation.





























                                       17

<PAGE>
                                                                    Appendix B
SALOMON SMITH BARNEY
- --------------------------
                           A member of citigroup[logo]


March 7, 1999

The Board of Directors
Lab Holdings, Inc.
5000 West 95th Street
Shawnee Mission, Kansas  66207

Members of the Board:

   You have requested our opinion as to the fairness,  from a financial point of
view, to Lab Holdings,  Inc. ("Lab Holdings") of the consideration to be paid by
Lab Holdings  pursuant to the terms and subject to the  conditions  set forth in
the Agreement and Plan of Merger,  dated March 7, 1999 (the "Merger Agreement"),
by and between Lab Holdings and LabOne, Inc. ("LabOne"). As more fully described
in the Merger  Agreement,  (i) LabOne will be merged with and into Lab  Holdings
(the  "Merger"  and,  the entity  result  ing from the  Merger,  the  "Surviving
Corporation")  and (ii) each  outstanding  share of the common stock,  par value
$0.01 per share,  of LabOne (the "LabOne  Common  Stock") will be converted into
the right to  receive,  at the  election  of the holder  thereof  and subject to
certain  proration  procedures (as to which we express no opinion)  specified in
the Merger  Agreement,  either or a combination of (A) $12.75 in cash (the "Cash
Consideration") or (B) one share (the "Stock  Consideration"  and, together with
the Cash  Consideration,  the "Merger  Consideration")  of the common stock, par
value $0.01 per share, of the Surviving Corporation (the "Surviving  Corporation
Common Stock"). We have been advised by representatives of Lab Holdings that (x)
the maximum Cash Consideration payable in the Merger will be $16,600,000 and (y)
immediately prior to the effective time of the Merger,  each share of the common
stock,  par value $1.00 per share,  of Lab Holdings  (the "Lab  Holdings  Common
Stock")  will be  converted  into 1.50 shares o f Surviving  Corporation  Common
Stock (the "Stock Split").

   In  arriving  at our  opinion,  we  reviewed  the Merger  Agreement  and held
discussions  with certain senior officers,  directors and other  representatives
and advisors of Lab Holdings and certain senior officers,  other representatives
and advisors of LabOne  concerning the  businesses,  operations and prospects of
Lab Holdings and LabOne.  We examined  certain publicly  available  business and
financial  information  relating to Lab  Holdings  and LabOne as well as certain
financial  forecasts and other  information and data for Lab Holdings and LabOne
which  were  provided  to or  otherwise  discussed  with  us by  the  respective
managements  of Lab  Holdings  and  LabOne,  including  information  relating to
certain strategic  implications and operational  benefits  anticipated to result
from the Merger.  We reviewed the financial  terms of the Merger as set forth in
the Merger Agreement in relation to, among other things:  current and historical
market prices and trading volumes of Lab Holdings Common Stock and LabOne Common
Stock;  the histo rical and projected  earnings and other  operating data of Lab
Holdings  and LabOne; 

SALOMON SMITH BARNEY INC.  3888 Greenwich Street, New York, NY 10013
<PAGE>

The Board of Directors
Lab Holdings, Inc.
March 7, 1999
Page 2

and the  capitalization  and  financial  condition of Lab
Holdings  and LabOne.  We  considered,  to the extent  publicly  available,  the
financial terms of certain other similar transactions recently effected which we
considered  relevant in evaluating  the Merger and analyzed  certain  financial,
stock market and other publicly available information relating to the businesses
of other companies whose  operations we considered  relevant in evaluating those
of Lab Holdings and LabOne.  We also evaluated the potential pro forma financial
impact of the Merger on Lab Holdings. In addition to the foregoing, we conducted
such other  analyses  and  examinations  and  considered  such other  financial,
economic  and  market  criteria  as we deemed  appropriate  in  arriving  at our
opinion.

   In rendering  our opinion,  we have assumed and relied,  without  independent
verification,  upon the accuracy and  completeness  of all  financial  and other
information and data publicly available or furnished to or otherwise reviewed by
or discussed with us. With respect to financial  forecasts and other information
and data provided to or otherwise reviewed by or discussed with us, we have been
advised by the  managements  of Lab Holdings and LabOne that such  forecasts and
other  information  and data were reasonab ly prepared on bases  reflecting  the
best currently available  estimates and judgments of the respective  managements
of Lab  Holdings  and  LabOne  as to the  future  financial  performance  of Lab
Holdings and LabOne and the  strategic  implications  and  operational  benefits
anticipated to result from the Merger. We have assumed,  with your consent, that
the Merger will be treated as a tax-free  reorganization  for federal income tax
purposes.  We are not  expressing  any  opinion  as to  what  the  value  of the
Surviving  Corp  oration  Common  Stock  actually  will be when issued to LabOne
stockholders  pursuant  to the  Merger  or the  price  at  which  the  Surviving
Corporation  Common Stock will trade subsequent to the Merger.  We have not made
or been  provided with an  independent  evaluation or appraisal of the assets or
liabilities (contingent or otherwise) of Lab Holdings or LabOne nor have we made
any physical  inspection of the  properties or assets of Lab Holdings or LabOne.
We express no view as to, and our opinion does not address,  the relative merits
of the Merger as  compared to any  alternative  business  strategies  that might
exist for Lab  Holdings  or the  effect of any  other  transaction  in which Lab
Holdings  might  engage.  Our  opinion is  necessarily  based  upon  information
available  to  us,  and  financial,   stock  market  and  other  conditions  and
circumstances existing and disclosed to us, as of the date hereof.

   Salomon  Smith Barney Inc. has acted as financial  advisor to Lab Holdings in
connection  with the Merger and will receive a fee for such services,  a portion
of which is contingent upon  consummation of the Merger.  We also will receive a
fee upon the delivery of this opinion.  In the ordinary  course of our business,
we and our  affiliates may actively trade or hold the securities of Lab Holdings
and  LabOne  for our  own  account  or for the  account  of our  customers  and,
accordingly,  may at any time hold a long or short position in such  securities.
In addition, we and our affiliates (including Citigroup Inc. and its affiliates)
may  maintain  relationships  with Lab  Holdings,  LabOne  and their  respective
affiliates.
<PAGE>
The Board of Directors
Lab Holdings, Inc.
March 7, 1999
Page 3

   Our advisory  services and the opinion  expressed herein are provided for the
information  of the Board of Directors of Lab Holdings in its  evaluation of the
proposed Merger, and our opinion is not intended to be and does not constitute a
recommendation to any stockholder as to how such stockholder  should vote on any
matter relating to the proposed Merger.

   Based  upon and  subject  to the  foregoing,  our  experience  as  investment
bankers,  our work as described  above and other factors we deemed  relevant and
after taking into account the Stock Split, we are of the opinion that, as of the
date hereof,  the Merger  Consideration is fair, from a financial point of view,
to Lab Holdings.

Very truly yours,


 /s/ Salomon Smith Barney Inc.
- -------------------------
SALOMON SMITH BARNEY INC.
<PAGE>
                                                                    Appendix C 
                                                    Piper Jaffray
                                                    222 South Ninth Street
                                                    Minneapolis, MN 55402-3804

                                                    612 342-6000
March 7, 1999

The Special Committee of the Board of Directors of LabOne, Inc.
c/o John A. Granda, Esq.
Stinson, Mag & Fizzell, P.C.
1201 Walnut Street
Suite 2800
Kansas City, MO 64106-2150

Attention:        Richard S. Schweiker

Members of the Special Committee:

In connection with the proposed transaction (the "Transaction") in which LabOne,
Inc.  ("LabOne") will be merged with and into Lab Holdings,  Inc.  ("Holdings"),
you have requested our opinion as to fairness,  from a financial  point of view,
to the  Unaffiliated  Stockholders  (as defined below) of LabOne of the proposed
Merger  Consideration (also defined below) to be received by such holders in the
Transaction.  As detailed in the Agreement and Plan of Merger (the "Agreement"),
prior to the effective time of the merger,  each issued and outstanding share of
Holdings  common  stock  will be  automatically  converted  into  (assuming  the
effectiveness  of the  Transaction)  1.50 shares (the "Stock  Split") of validly
issued,  fully paid and non-assessable  shares of Holdings common stock. Subject
to the prior  effectiveness  of the Stock  Split,  each  share of LabOne  common
stock,  other  than  shares  of  LabOne  held by  Holdings  ("Minority  Interest
Shares"),  will be converted  into,  at the option of the holder,  either,  or a
combination, of the following (the "Merger Consideration");  (i) $12.75 cash; or
(ii) one share of  Holdings  common  stock.  To the extent  that cash  elections
exceed $16,600,000 or approximately 50% of the Minority Interest Shares, holders
of LabOne common shares that submitted  their shares for the cash portion of the
Merger  Consideration  will receive a pro rata amount of cash and Holdings stock
so that the overall cash component of the Merger  Consideration  does not exceed
$16,600,000.  "Unaffiliated  Stockholders"  means the holders of common stock of
LabOne other than  Holdings,  officers and directors of Holdings and  beneficial
owners of 10% or more of the outstanding  shares of Holdings  common stock.  The
Transaction  is  intended to qualify as a  reorganization  within the meaning of
Section 368(a) of the Internal Revenue Code of 1986, as amended (the "Code").

U.S. Bancorp Piper Jaffray,  as a customary part of its investment  banking
business,  is engaged in the  valuation of  businesses  and their  securities in
connection   with  mergers  and   acquisitions,   underwriting   and   secondary
distributions  of  securities,  private  placements  and  valuations for estate,
corporate and other purposes.  We will receive a fee for providing this opinion.
This opinion fee is not contingent  upon the  consummation  of the  Transaction.
LabOne has also agreed to indemnify us against certain liabilities in connection
with our services. In the ordinary course of our business, we and our affiliates
may actively trade  securities of LabOne and Holdings for our own account or the
account of our customers and, accordingly,  may at any time hold a long or short
position in such securities.



<PAGE>
In arriving  at our  opinion,  we have  undertaken  such  review,  analyses  and
inquiries as we deemed necessary and appropriate under the circumstances.  Among
other  things,  we have  reviewed (i) a draft copy of the  Agreement and Plan of
Merger  dated March 7, 1999,  (ii)  certain  financial,  operating  and business
information related to LabOne,  (iii) certain internal financial  information of
LabOne on a  stand-alone  basis

                                                  Since 1895, Members
                                                  New York Stock Exchange, Inc.

LabOne, Inc.
March 7, 1999
Page 2


prepared for  financial  planning  purposes and
furnished by the management of LabOne,  (iv) to the extent  publicly  available,
financial  terms  of  certain  acquisition   transactions   involving  companies
operating in  industries  deemed  similar to that in which  LabOne  operates and
selected public  companies  deemed  comparable to LabOne,  (v) certain  publicly
available  financial,  operating and business  information relative to Holdings,
and (vi) certain publicly  available  financial and securities data of Holdings,
(vii)  certain  publicly  available  financial  and  securities  data related to
LabOne,  and (viii)  information  relating to LabOne and  Holdings on a combined
basis.  We had  discussions  with  members  of the  management  of (a)  Holdings
concerning  the  financial  condition,  current  operating  results and business
outlook for both  Holdings  and LabOne on a  stand-alone  basis and the combined
company  resulting from the  Transaction  and Holdings's  plans relating to such
combined  company  as well as the  amount  and  timing of the cost  savings  and
related  expenses  expected  to  result  from the  Transaction,  and (b)  LabOne
concerning  the  financial  condition,  current  operating  results and business
outlook for LabOne and the combined company.

We have relied upon and assumed the accuracy,  completeness  and fairness of the
financial statements and other information provided to us by LabOne and Holdings
and have not assumed  responsibility  for the  independent  verification of such
information.  Such information was prepared for financial  planning purposes and
was not prepared with the expectation of public disclosure.  We have relied upon
the  assurances of the  management  of LabOne and Holdings that the  information
provided to us as set forth above by LabOne and Holdings has been  prepared on a
reasonable  basis,  and,  with  respect  to  financial  planning  data and other
business outlook  information,  reflects the best currently available estimates,
and that they are not aware of any  information  or facts  that  would  make the
information provided to us incomplete or misleading.  Further,  although we make
no  representation  that our  procedures  and resulting  opinion are adequate or
sufficient for your purpose,  we have relied on memoranda and  discussions  with
the  Special  Committee  and  counsel to the Special  Committee  concerning  the
elements of fairness  of price under  applicable  law in the context of a merger
such as the Transaction.

We have  assumed  that the final  form of the  Agreement  will be  substantially
similar to the last draft  reviewed  by us,  without  modification  or waiver of
material terms or conditions by Holdings or LabOne. In addition,  in arriving at
our opinion,  we have assumed  that,  in the course of obtaining  the  necessary
regulatory  approvals  for  the  Transaction,  no  restrictions,  including  any
divestiture  requirements  will be  imposed  that will have a  material  adverse
effect on the contemplated benefits of the Transaction.


<PAGE>
Pursuant to the  engagement  letter dated April 17,  1997,  U.S.  Bancorp  Piper
Jaffray  was  hired  by the  Special  Committee  of the  Board of  Directors  to
negotiate  the  Transaction  and  express  an  opinion  as to  fairness  of  the
Transaction.  We were not asked to and accordingly  did not solicit  alternative
business  combination  transactions  or  other  strategic  alternatives  to  the
Transaction.

In  arriving  at our  opinion,  we have not  performed  any  appraisals  or
valuations of any specific assets or liabilities of Holdings or LabOne, and have
not been  furnished  with any such  appraisals or  valuations.  We have analyzed
LabOne as a going  concern  and  accordingly  express no opinion  regarding  the
liquidation value of any entity.

This opinion is necessarily based upon the information available to us and facts
and  circumstances  as they  exist and are  subject  to  evaluation  on the date
hereof;  events  occurring  after the date hereof  could  materially  affect the
assumptions  used in preparing  this opinion.  We are not expressing any opinion
herein as to the price at which  shares of Holdings  common stock have traded or
may trade at any future time. We have not 


                                                        Piper Jaffray, Inc.

LabOne, Inc.
March 7, 1999
Page 3

undertaken to reaffirm or revise this opinion or otherwise comment upon any
events occurring after the date hereof and do not have any obligation to update,
revise or reaffirm this opinion.

This  opinion is directed to the Special  Committee of the Board of Directors of
LabOne and is not intended to be and does not constitute a recommendation to any
stockholder  as to  how  such  stockholder  should  vote  with  respect  to  the
Transaction  or any election  such  stockholder  should make with respect to the
Merger  Consideration  offered.  We were not  requested to opine as to, and this
opinion does not address,  the basic business decision to proceed with or effect
the Transaction.  This opinion shall not be published,  relied upon or otherwise
used, nor shall any public  references to us be made,  without our prior written
approval.

Based upon and subject to the  foregoing and based upon such other factors as we
consider  relevant,  it is our opinion that,  as of the date hereof,  the Merger
Consideration  proposed  to be  received  in  the  Transaction  pursuant  to the
Agreement by the Unaffiliated  Stockholders of LabOne common stock is fair, from
a financial point of view, to such holders.

Sincerely,


s/ US Bancorp Piper Jaffray

U.S. BANCORP PIPER JAFFRAY





                                                       Piper Jaffray, Inc.

<PAGE>
                                                                      Appendix D


   351.455. Shareholder who objects to merger may demand value of shares, when

   1. If a  shareholder  of a  corporation  which  is a  party  to a  merger  or
consolidation  shall file with such  corporation,  prior to or at the meeting of
shareholders  at which the plan of merger or  consolidation  is  submitted  to a
vote, a written objection to such plan of merger or consolidation, and shall not
vote in favor thereof, and such shareholder, within twenty days after the merger
or consolidation is effected,  shall make written demand on the surviving or new
corporation  for  payment of the fair value of his shares as of the day prior to
the date on which the vote was taken approving the merger or consolidation,  the
surviving or new corporation  shall pay to such  shareholder,  upon surrender of
his  certificate  or  certificates  representing  said  shares,  the fair  value
thereof.  Such demand  shall  state the number and class of the shares  owned by
such dissenting  shareholder.  Any shareholder failing to make demand within the
twenty day period shall be conclusively presumed to have consented to the merger
or consolidation and shall be bound by the terms thereof.

   2. If within thirty days after the date on which such merger or consolidation
was  effected  the value of such  shares is agreed upon  between the  dissenting
shareholder and the surviving or new corporation, payment therefor shall be made
within  ninety  days after the date on which such  merger or  consolidation  was
effected,  upon the surrender of his  certificate or  certificates  representing
said shares.  Upon payment of the agreed value the dissenting  shareholder shall
cease to have any interest in such shares or in the corporation.

   3. If within such period of thirty days the  shareholder and the surviving or
new  corporation do not so agree,  then the dissenting  shareholder  may, within
sixty days after the expiration of the thirty day period, file a petition in any
court of competent jurisdiction within the county in which the registered office
of the  surviving  or new  corporation  is  situated,  asking for a finding  and
determination  of the fair  value of such  shares,  and  shall  be  entitled  to
judgment  against the surviving or new  corporation  for the amount of such fair
value as of the day prior to the date on which  such  vote was  taken  approving
such merger or consolidation, together with interest thereon to the date of such
judgment.  The judgment shall be payable only upon and  simultaneously  with the
surrender to the surviving or new corporation of the certificate or certificates
representing  said  shares.  Upon the payment of the  judgment,  the  dissenting
shareholder shall cease to have any interest in such shares, or in the surviving
or new corporation.  Such shares may be held and disposed of by the surviving or
new corporation as it may see fit. Unless the dissenting  shareholder shall file
such petition within the time herein limited,  such  shareholder and all persons
claiming under him shall be conclusively  presumed to have approved and ratified
the merger or consolidation, and shall be bound by the terms thereof.

   4.  The  right of  dissenting  shareholder  to be paid the fair  value of his
shares as herein provided shall cease if and when the corporation  shall abandon
the merger or consolidation.

<PAGE>
                                    PART II

             INFORMATION NOT REQUIRED IN THE REGISTRATION STATEMENT

Item 20.   Indemnification of Directors and Officers.

         The Registrant is  incorporated  in Missouri.  Under Section 351.355 of
the General and Business  Corporation  Law of Missouri,  a  corporation  has the
power,  under  specified  circumstances,  to indemnify its directors,  officers,
employees and agents in connection  with actions,  suits or proceedings  brought
against them by a third party or in the right of the  corporation,  by reason of
the fact that they were or are such  directors,  officers,  employees or agents,
against expenses incurred in any such action, suit, or proceeding.

          The  Registrant's  Bylaws provide that directors and officers shall be
indemnified to the full extent  permitted or authorized  under Missouri law. The
Registrant's  Bylaws also provide that no director of officer shall be liable to
the Registrant  for any loss or expense  suffered by it on account of actions or
omissions  taken by him in such  capacity if he (i) exercised the same degree of
care and skill as a prudent man would have exercised under the  circumstances in
the  conduct of his own  affairs or (ii) took or omitted to take such  action in
reliance  upon the  advice of  counsel or upon  statements  made or  information
furnished by directors, officers, employees or agents of the Registrant which he
had no reasonable grounds to disbelieve.

         Section 351.355 also permits such persons to seek indemnification under
any applicable bylaw, agreement, vote of stockholders or disinterested directors
or  otherwise.  Section  351.355 also permits a corporation  to provide  further
indemnity,  in addition  to that  otherwise  contemplated  by such  section,  if
provided for in the Articles of Incorporation or a bylaw or agreement authorized
by a stockholder  vote,  provided that no such  indemnification  can be made for
conduct  which  is  finally   adjudged  to  have  been   knowingly   fraudulent,
deliberately  dishonest  or willful  misconduct.  Section  351.355  also permits
corporations   to  maintain   insurance  for  officers  and  directors   against
liabilities  incurred  while  acting  in  such  capacities  whether  or not  the
corporation would be empowered to indemnify such persons under this section.

         The Registrant  has entered into  Indemnification  Agreements  with its
directors  and officers and the  nonemployee  directors of LabOne under which it
has agreed to  indemnify  such persons  against  expenses,  judgments  and fines
incurred in  connection  with the  defense or  settlement  of actions,  suits or
proceedings  brought  against  them  by a third  party  or in the  right  of the
corporation, provided such persons' conduct is not finally adjudged to have been
knowingly fraudulent, deliberately dishonest or willful misconduct.

         The Merger Agreement provides for certain  indemnification for officers
and  directors as well as former  officers and  directors of the  Registrant  as
described  under "The  Merger  Agreement -  Indemnification"  in the Joint Proxy
Statement/Prospectus.

         The  Registrant  currently has directors  and officers  insurance  that
insures directors and officers of the Registrant with respect to claims made for
alleged  "wrongful  acts"  in  their  roles  as  directors  or  officers  of the
Registrant and its  subsidiaries.  The insurance also insures the Registrant for
claims against the Registrant's directors or officers in situations in which the
Registrant  has an  obligation  to defend  and/or  indemnify  its  directors and
officers.


<PAGE>
Item 21. Exhibits and Financial Statement Schedules

    (a)  Exhibits  are listed on the  Exhibit  Index on the page  following  the
signatures.

    (b) Financial Statement Schedules.

           II.    Valuation and  Qualifying  Accounts and Reserves - Years ended
                  December  31,  1998,  1997  and  1996  (included  in  the  Lab
                  Holdings,  Inc. financial statements included in Lab Holdings,
                  Inc.

                                      II-1

                  Form  10-K for the year  ended  December  31,  1998,  which is
incorporated by reference herein).

ITEM 22.  UNDERTAKINGS

         Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors,  officers and controlling  persons of
the  registrant  pursuant  to  the  foregoing  provisions,   or  otherwise,  the
Registrant  has been advised that in the opinion of the  Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore,  unenforceable. In the event that a claim for indemnification
against such  liabilities  (other than the payment by the registrant of expenses
incurred or paid by a director,  officer or controlling person of the registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director,  officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as  expressed  in the  Securities  Act and will be  governed by the final
adjudication of such issue.

         (a)      The undersigned Registrant hereby undertakes:

                  (1) To file,  during period in which offers or sales are being
made, a post-effective amendment to this registration statement:

                    (i) To include any prospectus  required by Section  10(a)(3)
               of the Securities Act of 1933;

                    (ii) To  reflect  in the  prospectus  any  facts  or  events
               arising after the effective  date of the  registration  statement
               (or the most  recent  post-effective  amendment  thereof)  which,
               individually or in the aggregate,  represent a fundamental change
               in the  information  set  forth  in the  registration  statement.
               Notwithstanding the foregoing, any increase or decrease in volume
               of  securities  offered (if the total dollar value of  securities
               offered  would not  exceed  that  which was  registered)  and any
               deviation  from  the low or  high  and of the  estimated  maximum
               offering  range may be reflected in the form of prospectus  filed
               with the Commission pursuant to Rule 424(b) if, in the aggregate,
               the changes in volume and price represent no more than 20 percent
               change in the maximum  aggregate  offering price set forth in the
               "Calculation  of   Registration   Fee"  table  in  the  effective
               registration statement;

<PAGE>

                    (iii) To include any  material  information  with respect to
               the  plan  of  distribution  not  previously   disclosed  in  the
               registration statement or any material change to such information
               in the registration statement;

                  provided,  however,  that  paragraphs  (a)(i)  and (ii) do not
         apply if the  information  required to be included in a  post-effective
         amendment by those  paragraphs  is contained in periodic  reports filed
         with or  furnished  to the  Commission  by the  registrant  pursuant to
         Section  13 or 15(d) of the  Securities  Exchange  Act of 1934 that are
         incorporated by reference in the registration statement.

     (2)  That,  for  the  purpose  of  determining   any  liability  under  the
          Securities Act of 1933,  each such  post-effective  amendment shall be
          deemed to be a new registration  statement  relating to the securities
          offered  therein,  and the  offering of such  securities  at that time
          shall be deemed to be the initial bona fide offering thereof.

     (3)  To remove from registration by means of a post-effective amendment any
          of  the  securities  being  registered  which  remain  unsold  at  the
          termination of the offering.

   (b) The undersigned hereby undertakes that, for purposes of determining
any liability under the Securities Act of 1933, each filing of the  registrant's
annual report pursuant to Section 13(a) or 15(d) of the Securities  Exchange Act
of 1934 (and, where applicable, each filing of an employee benefit plan's annual
report

                                      II-2

pursuant  to  Section  15(d) of the  Securities  Exchange  Act of 1934)  that is
incorporated by reference in the registration  statement shall be deemed to be a
new registration  statement relating to the securities offered therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

     (c)  The undersigned  hereby undertakes that prior to any public reoffering
          of the  securities  registered  hereunder  through use of a prospectus
          which is a part of this registration statement, by any person or party
          who is deemed to be an underwriter  within the meaning of Rule 145(c),
          the issuer undertakes that such reoffering prospectus will contain the
          information  called  for  by the  applicable  registration  form  with
          respect to reofferings by persons who may be deemed  underwriters,  in
          addition  to the  information  called  for by the  other  items of the
          applicable form.

     (d)  The  undersigned   hereby   undertakes  to  respond  to  requests  for
          information  that is  incorporated  by reference  into the  prospectus
          pursuant to Item 4, 10(b), 11, or 13 of this form, within one business
          day of receipt of such request, and to send the incorporated documents
          by first  class mail or other  equally  prompt  means.  This  includes
          information  contained in documents filed  subsequent to the effective
          date of the registration  statement  through the date of responding to
          the request.

     (e)  The   undersigned   hereby   undertakes   to  supply  by  means  of  a
          post-effective amendment all information concerning a transaction, and
          the company being acquired involved therein,  that was not the subject
<PAGE>

          of  and  included  in  the  registration   statement  when  it  became
          effective.


                                      II-3



<PAGE>
                                   SIGNATURES

         Pursuant to  requirements of the Securities Act of 1933, the Registrant
has duly caused this  Registration  Statement  to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Prairie Village, State of
Kansas, on this 9th day of April, 1999.

                                        LAB HOLDINGS, INC.

                                      By s/P. Anthony Jacobs                  
                                      P. Anthony Jacobs, President and
                                      Chief Executive Officer

                                POWER OF ATTORNEY

         KNOW  ALL MEN BY THESE  PRESENTS,  that  each  person  whose  signature
appears  below  constitutes  and  appoints  P.  Anthony  Jacobs  and  Steven  K.
Fitzwater,  and each of them, his true and lawful  attorneys-in-fact and agents,
with full power of substitution  and  re-substitution,  for him and in his name,
place  and  stead,  in any and all  capacities,  to sign any and all  amendments
(including post effective  amendments) to this  Registration  Statement,  and to
file the same,  with all exhibits  thereto,  and other  documents in  connection
therewith,  with the  Securities  and Exchange  Commission,  granting  unto said
attorneys-in-fact  and agents,  and each of them, full power and authority to do
and perform  each and every act and thing  requisite  or necessary to be done in
and about the  premises,  as fully to all  intents  and  purposes as he might or
could  do  in  person,   hereby   ratifying   and   confirming   all  that  said
attorneys-in-fact  and  agents  or any of them,  or their or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.
<TABLE>
<CAPTION>
                  Name                               Title                              Date
                 -----                               -----                              ----  
<S>                                     <C>                                       <C>  
    s/P. Anthony Jacobs                     President, Chief Executive                April 9, 1999
- ----------------------------------------
    P. Anthony Jacobs                       Officer and Director

   s/Steven K. Fitzwater                    Executive Vice President, Chief
- ----------------------------------------    Operating and Financial Officer,
    Steven K. Fitzwater                     Treasurer, Secretary and                  April 9, 1999
                                            Director

  s/Linda K. McCoy                          Vice President and Chief                  April 9, 1999
- ---------------------------------------
    Linda K. McCoy                          Accounting Officer

  s/Lan C. Bentsen                          Director                                  April 6, 1999
- ---------------------------------------
    Lan C. Bentsen  

  s/John H. Robinson                        Director                                  April 9, 1999
- ----------------------------------------
    John H. Robinson, Jr.
</TABLE>
                                      II-4
<PAGE>

                                  EXHIBIT INDEX

     Exhibit                              Description
     --------                             ------------ 
2.1  Distribution Agreement, dated December 20, 1996, between the Registrant and
     SLH  Corporation  [filed as  Exhibit  2(a) to SLH  Corporation's  Form 10/A
     (Amendment No. 1) filed February 4, 1997 (File No. 0-21911)].*

2.2  Blanket Assignment,  Bill of Sale, Deed and Assumption Agreement,  dated as
     of February 28, 1997,  between the Registrant and SLH Corporation [filed as
     Exhibit  2(b) to SLH  Corporation's  Form  10/A  (Amendment  No.  1)  filed
     February 4, 1997 (File No. 0-21911)].*

2.3  Form of Agreement and Plan of Merger by and between Lab Holdings,  Inc. and
     LabOne,  Inc.,  as  amended  and  restated,  dated  as  of  March  7,  1999
     [Incorporated   by   reference   to   Appendix   A  to  the   Joint   Proxy
     Statement/Prospectus).*

3.1  Registrant's Articles of Incorporation, as amended [filed as Exhibit 3.1 to
     Amendment No. 1 to Registrant's  Registration  Statement on Form S-4, filed
     April 8, 1988 (File No. 33-20298)].*

3.2  Amendment to  Registrant's  Articles of  Incorporation,  effective  May 15,
     1991, [filed as Exhibit 3(b) to Registrant's Annual Report on Form 10-K for
     the year ended December 31, 1991 (File No. 0-16946)].*

3.3  Registrant's  Bylaws,  as amended  [filed as Exhibit  3(c) to  Registrant's
     Annual  Report on Form 10-K for the year ended  December 31, 1992 (File No.
     0-16946)].*

4.1  Form of  Certificate  of Serial  Designation  of Series A  Preferred  Stock
     [filed as  Exhibit  4.2 to  Amendment  No. 1 to  Registrant's  Registration
     Statement on Form S-4, filed April 8, 1988, (File No. 33-20298)].*

4.2  Trust Indenture dated as of September 1, 1998,  between the City of Lenexa,
     Kansas and Intrust Bank, N.A. related to the issuance of Taxable Industrial
     Revenue Bonds for the LabOne,  Inc., Facility Project [filed as Exhibit 4.1
     of the LabOne, Inc. Form 10-Q for the quarter ended September 30, 1998].*

4.3  Lease  Agreement  dated as of September 1, 1998 between the City of Lenexa,
     Kansas and LabOne, Inc. related to the Trust Indenture filed as Exhibit 4.1
     to the Company's  Report on Form 10-Q for the quarter  ended  September 30,
     1998 [filed as Exhibit 4.2 of the  LabOne,  Inc.  Form 10-Q for the quarter
     ended September 30, 1998].*

4.4  Reimbursement  Agreement dated as of September 1, 1998 between LabOne, Inc.
     and Commerce  Bank,  N.A.  related to Exhibits 4.1 and 4.2 to the Company's
     Report on Form 10-Q for the  quarter  ended  September  30,  1998 [filed as
     Exhibit 4.3 of the LabOne,  Inc. Form 10-Q for the quarter ended  September
     30, 1998].*

4.5  Letter agreement dated September 4, 1998,  between the Company and Commerce
     Bank,  N.A.  relating  to the  Company's  obligations  with  respect to the
     Reimbursement  Agreement and letters of credit to be issued thereunder that
     is  filed as  Exhibit  4.3 to the  Company's  Report  on Form  10-Q for the
     quarter ending September 30, 1998 [filed as Exhibit 4.4 of the Registrant's
     form 10-Q for the quarter ended September 30, 1998].*
                                      II-5
<PAGE>

5.1  Form of opinion  of  Lathrop & Gage L.C.  concerning  the  legality  of the
     securities being registered.

8.1  Form of opinion of Lathrop & Gage L.C.  concerning the tax  consequences of
     the Merger.

10.1 Registrant's  1997  Directors'  Stock  Option  Plan,  as amended  [filed as
     Exhibit 10.4 of the Registrant's  Form 10-Q for the quarter ended September
     30, 1998 and incorporated herein by reference).*

10.2 Form of Option  Agreement with directors under the Directors'  Stock Option
     Plan, as amended [filed as Exhibit 10.5 of the  Registrant's  Form 10-Q for
     the quarter ended September 30, 1998].*

10.3 Form of Indemnification  Agreement between Registrant and its directors and
     corporate/executive officers [filed as Exhibit 10(i) to Registrant's Annual
     Report  on Form  10-K  for the year  ended  December  31,  1989  (File  No.
     0-16946)].*

10.4 Long-Term  Incentive  Plan of  LabOne,  Inc.,  approved  May 16,  1991 with
     amendments  adopted  May 21,  1993 and  November  9, 1993 [filed as Exhibit
     10.21 to  Registrant's  Annual  Report  on Form  10-K  for the  year  ended
     December 31, 1993 (File No.0-16946)].*

10.5 Amendment to LabOne's Long Term Incentive Plan, effective February 10, 1995
     [filed as Exhibit 10.31 to Registrant's  Annual Report on Form 10-K for the
     year ended December 31, 1995 (File No. 0-16946)].*

10.6 Amendment  to LabOne's  Long Term  Incentive  Plan,  effective  May 9, 1997
     [filed as Exhibit 10.5 to LabOne,  Inc.  Annual Report on Form 10-K for the
     year ended December 31, 1997 (File No. 0-15975)].*

10.7 1997 Long-Term Incentive Plan of LabOne, Inc. [filed as Exhibit 10.1 to the
     LabOne,  Inc.  Form 10-Q for the  quarter  ended  June 30,  1998  (File No.
     0-15975)].*

10.8 Form of Stock  Option  Agreement  pursuant  to the  LabOne  1997  Long-Term
     Incentive Plan [filed as Exhibit 10.2 to the LabOne, Inc. Form 10-Q for the
     quarter ended June 30, 1998 (File No. 0- 15975)].*

10.9 LabOne's Stock Plan for  non-employee  directors [filed as Exhibit 10.23 to
     Registrant's  Annual  Report on Form 10-K for the year ended  December  31,
     1994 (File No. 0- 16946)].*

10.10LabOne's  Annual  Incentive  Plan  [filed as Exhibit  10.3 to LabOne,  Inc.
     Annual  Report on Form 10-K for the year ended  December 31, 1998 (File No.
     0-15975)].*

10.11Lab  Holdings,  Inc.  Facilities  Sharing and Interim  Services  Agreement,
     dated as of June 1, 1998  [filed as  Exhibit  10.29 to the SLH  Corporation
     Registration Statement on Form S-4 (Registration No. 333-50253)].*

10.12Tax  Sharing  Agreement,  dated  as  of  February  28,  1997,  between  the
     Registrant and SLH Corporation [filed as Exhibit 10(b) to SLH Corporation's
     Registration  Statement on Form 10/A  (Amendment  No. 1) filed  February 4,
     1997 (File No. 0-21911)].*
                                      II-6
<PAGE>

10.13Employment  agreement  between the  Registrant and P. Anthony  Jacobs,  the
     President and Chief Executive  Officer of the Registrant  [filed as Exhibit
     10.1 to the  Registrant's  Form 10-Q for the quarter  ended  September  30,
     1998].*

10.14Employment  agreement  between the Registrant and Steven K. Fitzwater,  the
     Executive Vice President and Chief  Operating and Financial  Officer of the
     Registrant  [filed as Exhibit  10.2 to the  Registrant's  Form 10-Q for the
     quarter ended September 30, 1998].*

10.15Employment  agreement  between the Registrant and Linda K. McCoy,  the Vice
     President and Chief Accounting  Officer of the Registrant [filed as Exhibit
     10.3 to the  Registrant's  Form 10-Q for the quarter  ended  September  30,
     1998].*

10.16Warrant  to  Purchase  Shares of common  stock of  LabOne,  Inc.  issued to
     National  Support  Services,  Inc. [filed as Exhibit 4 to the LabOne,  Inc.
     Form 10-Q for the quarter ended March 31, 1998].*

10.17Warrant to Purchase  Shares of Common Stock of LabOne,  Inc.  issued to USA
     Managed Care Organization  [filed as Exhibit 4.5 to the LabOne, Inc. Annual
     Report on Form 10-K for the year ended December 31, 1998].*

11   Statement  regarding  computation  of per share earnings  [incorporated  by
     reference  to  Note  l  of  Notes  to  Consolidated  Financial  Statements,
     "Earnings  Per  Share."  included  in  the  Lab  Holdings,  Inc.  financial
     statements  included  in Lab  Holdings,  Inc.  Form 10-K for the year ended
     December 31, 1998].*

21   Subsidiaries  of  Registrant  [incorporated  by  reference to Item 1 in Lab
     Holdings, Inc. Form 10-K for the year ended December 31, 1998].*

23.1 Consent of Lathrop & Gage L.C. (see Exhibits 5.1 and 8.1).

23.2 Consent of KPMG LLP with respect to their report on Financial Statements of
     Lab  Holdings,  Inc. and LabOne,  Inc. 

23.3 Consents of persons named in the Registration Statement to become directors
     of the Registrant.+

24   Powers of Attorney  [incorporated by reference to the signature page and to
     exhibits 24 to Lab Holdings, Inc. Form 10-K for the year ended December 31,
     1998].*

27   LabOne,  Inc.  Financial  Data Schedule  filed as Exhibit 27 to LabOne Form
     10-K for the year ended December 31, 1998.*

99.1 Cautionary  Statement  under  the Safe  Harbor  Provisions  of the  Private
     Securities  Litigation Reform Act of 1995 (incorporated by reference to the
     Registrant's Report on Form 8-K, dated October 23, 1998).*

99.2 Form of proxy card of Lab Holdings, Inc.

99.3 Form of proxy card of LabOne, Inc.

                                      II-7

<PAGE>
99.4 Letter of Transmittal and Form of Election

99.5 Consent of Salomon Smith Barney Inc.

99.6 Consent of  U.S.Bancorp  Piper Jaffray Inc.
______________-
 *  Incorporated by reference as indicated.
 +  To be filed by amendment.






































                                      II-8






<PAGE>
                                                                    Exhibit 5.1

                               LATHROP & GAGE L.C.
                                   LAW OFFICES
2345 Grand Boulevard                           1050/40 Corporate Woods
Suite 2800                                     9401 Indian Creek Parkway
Kansas City, Missouri 64108-2684               Overland Park, Kansas 66210-2007
816-292-2000, Fax 816-292-2001                 913-451-5100, Fax 913-451-0875

                                 JOHN H. CALVERT
                                  816-460-5807
              [email protected] or [email protected]

                                  _______, 1999

Board of Directors
Lab Holdings, Inc.
5000 West 95th Street
Shawnee Mission, Kansas 66207

     Re:  Offering by Lab  Holdings,  Inc.  (the  "Company") of shares of Common
Stock,  $0.01 par value (the "Common Stock") pursuant to that certain  Agreement
and Plan of Merger by and between Lab Holdings, Inc. and LabOne, Inc. as amended
and  restated,  dated as of March 7, 1999 (the  "Merger  Agreement"),  a copy of
which is appended to the Joint  Proxy  Statement/Prospectus  that has been filed
with  the  Securities  and  Exchange  Commission  as a part of the  registration
statement  of the Company on Form S-4,  file No.  333-_____  (the  "Registration
Statement").

Gentlemen,

         We have acted as counsel to the  Company in  connection  with the above
referenced  Offering  pursuant to which the Company  proposes to issue shares of
its Common  Stock to the holders of common stock of LabOne,  Inc. in  accordance
with the terms of the Merger Agreement.

         We have examined the Merger  Agreement,  the Articles of  Incorporation
and Bylaws of the Company, as amended, the proceedings of the Board of Directors
of the Company in connection with the  authorization,  execution and delivery of
the Merger Agreement and the filing of the Registration Statement,  certificates
of officers of the Company and of state officials and such other documents as we
have deemed  necessary  in order to express  the  opinion set out herein.  As to
certain questions of fact material to our opinion we have,  without  independent
investigation,  relied upon the representations and warranties of the parties as
set forth in the Merger  Agreement.  We have also assumed the genuineness of all
signatures on original documents and certificates examined by us.

         Our opinion is limited to the matters  expressly set forth herein,  and
no opinion is to be implied or may be inferred  beyond the matters  expressly so
stated.  Our  opinion is also  limited to the effect of the laws of the state of
Missouri and the Federal laws of the United  States.  We express no opinion with
respect  to the  effect of the laws of any  other  jurisdiction  on the  matters
referred to herein.  We further  disclaim any  obligation to update this opinion
letter for events occurring after the date of this opinion letter.

         Based upon the foregoing, and assuming that (i) the Merger Agreement is
approved by the holders of the  requisite  number of shares of capital  stock of
the parties thereto, (ii) that all conditions to the Merger Agreement are either
satisfied or properly  waived,  and (iii) that the Merger  Agreement is properly
filed with and  certificates  of merger with respect  thereto are duly issued by
the  Secretaries of State of Missouri and Delaware,  all as  contemplated by the
Merger  Agreement,  we are of the opinion that the Common Stock,  when issued to
the
                       
<PAGE>

Board of Directors
Lab Holdings, Inc.
______________, 1999
Page 2


stockholders  of  LabOne  pursuant  to  the  Merger  Agreement,   will  be  duly
authorized, legally issued, fully paid and non-assessable.

         We consent to the use of this opinion in the Registration Statement and
in pre-effective and post-effective  amendments  thereto. We also consent to the
use of this opinion and to the  reference to our firm under the caption  ("Legal
Opinions") in the Joint Proxy Statement/Prospectus of the Registration Statement
and amendments thereto.

                                           Very truly yours,

                                           LATHROP & GAGE L.C.

                                      
                                       By:  
                                           John H. Calvert









<PAGE>
                                                                    Exhibit 8.1
                              Lathrop & Gage L.C.
                              2345 Grand Boulevard
                          Kansas City, Missouri 64108

Russell D. Jones
(816) 460-5725
Email: [email protected]

                                __________, 1999
                                    (Draft)
Lab Holdings, Inc.
5000 West 95th Street
Suite 260, Box 7568
Shawnee Mission, Kansas  66207

LabOne, Inc.
10101 Renner Boulevard
Lenexa, Kansas  66219

   Re: Merger of LabOne, Inc. into Lab Holdings, Inc.

Dear Sirs:

   We represent Lab Holdings, Inc., a Missouri corporation ("Lab Holdings"),  in
connection  with  the  merger  (the  "Merger")  of  LabOne,   Inc.,  a  Delaware
corporation ("LabOne"), into Lab Holdings pursuant to that certain Agreement and
Plan of Merger, as amended and restated,  dated as of March 7, 1999 (the "Merger
Agreement").  The Merger is described in a joint Proxy  Statement/Prospectus  of
Lab Holdings and LabOne (as amended to date, the "Prospectus")  that is included
in a Registration  Statement on Form S-4 (Registration No. 333-_____) filed with
the Securities and Exchange Commission with respect to the Merger (as amended to
date, the "Registration Statement").

   Section 6.1(g) of the Merger  Agreement  provides that the obligation of each
of you to effect  the  Merger  shall be  subject  to your  receipt of an opinion
letter of counsel to the effect that the Merger will have certain federal income
tax consequences. This opinion letter is being delivered to each of you pursuant
to such Section 6.1(g).

   We have  examined such  documents  and records and made such  inquiries as we
consider  relevant  and  necessary  for  purposes  of this  opinion  letter.  In
particular  we have  reviewed  the Merger  Agreement,  the  Prospectus,  and the
Registration  Statement.  Also in particular we have reviewed upon a Certificate
of Fact that has been  provided to us by you.  Based upon such  examination  and
inquiry,  and further based on the assumptions and subject to the qualifications
set forth below, we are of the opinion that the federal income tax  consequences
of the Merger include the following.


<PAGE>

___________, 1999
Page 2

Holdings

   With respect to Holdings the Merger will qualify as a tax-free liquidation of
LabOne  under  Section 332 of the Internal  Revenue  Code of 1986 (the  "Code").
Accordingly,  and taking into account other  applicable  rules,  no gain or loss
will be  recognized  by  Holdings  upon  the  receipt  by it of all of  LabOne's
property and the cancellation of its LabOne stock pursuant to the Merger or as a
result of the stock split that precedes the Merger. However, and notwithstanding
the preceding  sentence,  Holdings will at the time of the Merger  recognize any
gain or loss that is realized by it upon its receipt of property  from LabOne in
satisfaction  of any debt that is then  owed to it by  LabOne.  Also,  and again
notwithstanding  the first sentence of this paragraph,  Holdings may at the time
of the  Merger  recognize  income  from the  discharge  of  indebtedness  if any
indebtedness is then owed by it to LabOne.

   Holdings'  initial  tax basis in each of the  properties  received by it from
LabOne  pursuant to the Merger will be the same as  LabOne's  tax basis  therein
immediately  before  the  Merger.  Holdings'  holding  period  for the  property
received  by it from LabOne  pursuant to the Merger will  include the period for
which the property was held by LabOne.

LabOne

   With respect to LabOne the Merger will qualify as a tax-free  liquidation  of
LabOne under  Section 332.  Accordingly,  no gain or loss will be  recognized by
LabOne upon the  distribution by it of all of its property to Holdings  pursuant
to the Merger.

Holdings Stockholders

   In general the Merger will have no effect on Holdings stockholders.  However,
and notwithstanding the preceding  sentence,  Holdings  stockholders who receive
cash in lieu of  fractional  shares  in  connection  

      
<PAGE>
_________, 1999
Page 3

with  the  stock split that  precedes the Merger will  be treated as if they had
received the  fractional  shares and such shares were then redeemed by Holdings.
As discussed in more detail  below,  the specific tax  consequences  to Holdings
stockholders  of a deemed  redemption  of  Holdings  stock  will  depend  on the
stockholders'  individual  circumstances.  Therefore, we express no opinion with
respect to the specific tax  consequences  to any  Holdings  stockholder  of the
receipt of cash in lieu of a  fractional  share of  Holdings  stock in the stock
split that  precedes the Merger.  We note,  however,  that the Internal  Revenue
Service (the "IRS") has ruled that a stockholder  who receives cash in lieu of a
fractional  share  in  connection  with a stock  dividend  or stock  split  will
generally  recognize  gain or loss on the deemed  redemption of such  fractional
share in an amount equal to the  difference  between the amount of cash received
and the stockholder's tax basis in such fractional share, provided that the cash
is distributed  solely for the purpose of saving the corporation the expense and
inconvenience  of  issuing  and  transferring   fractional  shares  and  is  not
separately bargained-for consideration.

   Similarly,  and also  notwithstanding  the first  sentence  of the  preceding
paragraph,  Holdings stockholders who receive cash as a result of their exercise
of statutory  dissenters' rights will be treated as if their Holdings stock were
redeemed  by  Holdings.  This  deemed  redemption  will be  treated as a sale or
exchange of such a stockholder's  Holdings stock,  and thus will trigger capital
gain or  loss,  if it is  considered  to be  "not  essentially  equivalent  to a
dividend"  under Section  302(b)(1) or if it is considered to be  "substantially
disproportionate"  with respect to the stockholder under Section 302(b)(2) or if
it results in a complete  termination of the stockholder's  interest in Holdings
under  Section  302(b)(3);  otherwise  the cash  received  will be  treated as a
dividend.  In determining  whether the deemed redemption is treated as a sale or
exchange the  constructive  ownership rules of Section 318,  pursuant to which a
stockholder  is treated as owning stock that is actually  owned by certain other
related parties, are generally applicable.

   A  deemed  redemption  of  Holdings  stock  held  by  a  dissenting  Holdings
stockholder will be considered to be "not essentially  equivalent to a dividend"
under Section 302(b)(1) if the redemption results in a 


<PAGE>
_______________, 1999
Page 4

"meaningful  reduction"   in   the  stockholder's   proportionate   interest  in
Holdings.  U.S. v. Davis, 397 U.S. 301, 313, reh'g denied, 397 U.S. 1071 (1970).
The  existence  and extent of any decrease in voting  control  appears to be the
most  significant  factor to be taken into account in applying this  "meaningful
reduction"  test,  although  the  existence  and extent of decreases in economic
ownership are also relevant considerations.

   A  deemed  redemption  of  Holdings  stock  held  by  a  dissenting  Holdings
stockholder  will be  considered  to be  "substantially  disproportionate"  with
respect to the stockholder under Section  302(b)(2) if the stockholder  actually
and  constructively  owns  less  than 50  percent  of the  voting  power  of the
outstanding  Holdings stock after the deemed redemption and if the percentage of
Holdings stock actually and  constructively  owned by such stockholder after the
deemed  redemption is less than 80 percent of the  percentage of Holdings  stock
actually and  constructively  owned by such stockholder  immediately  before the
deemed redemption.

   As indicated in the foregoing discussion,  the specific tax consequences of a
deemed  redemption of the Holding stock of a Holdings  stockholder who exercises
statutory  dissenters'  rights  will  depend  on such  stockholder's  individual
circumstances. Therefore, we express no opinion with respect to the specific tax
consequences  of such deemed  redemption  treatment to any  particular  Holdings
stockholder.

LabOne Stockholders (Other Than Holdings)

   With respect to LabOne  stockholders  (other than  Holdings)  the Merger will
qualify as a tax-free  reorganization under Section 368(a) and both Holdings and
LabOne will be parties to such reorganization under Section 368(b). Accordingly,
the  principal  tax  consequences  of the  Merger  to such  stockholders  are as
follows.

   No gain or loss will be  recognized by LabOne  stockholders  who receive only
Holdings stock in exchange for their LabOne stock pursuant to the Merger.

      
<PAGE>
___________, 1999
Page 5

   LabOne  stockholders who receive only cash in exchange for their LabOne stock
pursuant to the Merger will likely be treated as if they had  received  Holdings
stock  in the  Merger  and such  stock  was  redeemed  by  Holdings  immediately
thereafter, although the law in this regard is unclear and such stockholders may
be  treated  as if they had  sold  their  LabOne  stock  to  Holdings.  A deemed
redemption  of LabOne  stock will be treated,  under the rules  discussed  above
regarding deemed redemptions of Holdings stock,  either as a sale or exchange of
LabOne  stock (with the  recognition  of capital gain or loss) or as a dividend,
depending on the stockholder's individual circumstances. A deemed sale of LabOne
stock to Lab  Holdings  would  cause the  recognition  of capital  gain or loss.
Because of the  uncertainty in the law, and because of the LabOne  stockholders'
varying  circumstances,  we express no opinion  with respect to the specific tax
consequences  of the  Merger to LabOne  stockholders  who  receive  only cash in
exchange for their LabOne stock pursuant thereto.

   LabOne stockholders who receive some Holdings stock and some cash in exchange
for their LabOne stock pursuant to the Merger will recognize gain, but not loss,
on such exchange.  The amount of the gain recognized by such a stockholder  will
be equal to the lesser of: one, the total gain realized by such  stockholder  on
the  exchange  (i.e.,  the value of the Merger  consideration  received  by such
stockholder, including both cash and Holdings stock, less such stockholder's tax
basis in the LabOne stock that is given up in the exchange);  or two, the amount
of cash  received.  The gain that is  realized  by a LabOne  stockholder  may be
capital  gain or ordinary  income,  depending  on the  stockholder's  individual
circumstances   (determined  in  accordance  with  the  rules  regarding  deemed
redemptions  that are  discussed  above,  applied as if the  LabOne  stockholder
exchanged  all of his LabOne stock for Holdings  stock and Holdings  immediately
redeemed  a portion  of such  Holdings  stock for  cash).  Because of the LabOne
stockholders' varying  circumstances,  we express no opinion with respect to the
character of the gain,  if any,  recognized by LabOne  stockholders  who receive
some Holdings stock and some cash in exchange for their LabOne stock pursuant to
the Merger.

   The aggregate tax basis of the shares of Holdings  stock received by a LabOne
stockholder pursuant to the Merger will equal the aggregate

<PAGE>

_________, 1999
Page 6

tax  basis  of  such  stockholder's  shares of LabOne  stock  exchanged  in  the
Merger,  increased by the amount of any gain recognized by such  stockholder and
decreased by the amount of any cash  received by such  stockholder.  The holding
period for shares of Holdings stock received by a LabOne stockholder pursuant to
the Merger  will  include  the  holding  period  for the shares of LabOne  stock
exchanged in the Merger.

   The  foregoing  opinions  are based on the  Code,  its  legislative  history,
Treasury  Regulations,   judicial  authority,  and  administrative  rulings  and
practice,  all as currently  existing and in effect.  This opinion letter is not
binding  on the IRS or upon the  courts,  and if the IRS  challenges  any of the
opinions  that are  expressed  herein  substantial  expense  may at a minimum be
incurred in dealing therewith. Legislative,  judicial, or administrative changes
or  interpretations  may be forthcoming  that could alter or modify the opinions
expressed by us herein.  Any such changes may be  retroactive  and could affect,
possibly adversely, the tax consequences of the Merger.

   In  rendering  the  foregoing  opinions we have  assumed the  accuracy of all
statements  of fact  contained  in the Merger  Agreement,  the  Prospectus,  the
Registration  Statement,  and other  documents  examined  by us or made to us by
officers or other  representatives of Lab Holdings and LabOne in response to our
inquiries.  We have also assumed the due authorization,  execution and delivery,
and  binding  effect  of all  contracts  examined  by us by  and on all  parties
thereto.  We have  further  assumed the  genuineness  of all  signatures  on all
contracts and other documents  examined by us, the authenticity of all documents
submitted to us as originals,  and the  conformity to original  documents of all
documents submitted to us as copies.

   We express no opinion as to the federal income tax consequences of the Merger
if any of the  assumptions  that we are  relying  upon in issuing  this  opinion
letter are incorrect.  We also express no opinion as to the tax  consequences of
the Merger under any state, local, or foreign tax law.

   The opinions set forth in this letter are effective as of the date hereof. We
express no opinions other than as herein  expressly set forth,  and no expansion
of our opinions may be made by implication or otherwise.  We do not undertake to
advise you of any  matter  within the scope of this  letter  which  comes to our
attention after the delivery of this letter and disclaim any  responsibility  to
advise you of future changes in law or fact which may affect the above opinions.

<PAGE>

___________, 1999
Page 7

   This opinion letter may not be filed with any governmental  agency or be used
for any other  purpose  without  our prior  written  consent,  except  that this
opinion letter may be filed as an exhibit to the Registration  Statement.  Also,
we  consent  to the  reference  that  is  made to  this  opinion  letter  in the
Prospectus  under the caption "The Proposed  Merger--Certain  Federal Income Tax
Consequences."

                                                Very truly yours,

                                                LATHROP & GAGE L.C.


                                                By:  
                                                   ----------------------------
                                                   Russell D. Jones





<PAGE>
                                                                   Exhibit 23.2


CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Boards of Directors
Lab Holdings, Inc. and LabOne, Inc.
Shawnee Mission, Kansas:


We consent to the  incorporation by reference in the  registration  statement on
Form S-4 of Lab  Holdings,  Inc. of our report dated March 8, 1999,  relating to
the  consolidated  balance sheets of Lab Holdings,  Inc. as of December 31, 1998
and 1997,  and the related  consolidated  statements of  operations,  changes in
stockholder's equity, comprehensive income, and cash flows for each of the years
in the three-year  period ended  December 31, 1998,  and all related  schedules,
which report appears in the Lab Holdings, Inc. annual report on Form 10-K of Lab
Holdings, Inc. for the year ended December 31, 1998.

We consent to the incorporation  into the registration  statement on Form S-4 of
Lab Holdings,  Inc. of our report dated January 29, 1999,  except as to note 12,
which is as of March 8, 1999,  relating to the  consolidated  balance  sheets of
LabOne,  Inc. and subsidiaries as of December 31, 1998 and 1997, and the related
consolidated  statements of earnings,  changes in stockholders' equity, and cash
flows for each of the years in the three-year period ended December 31, 1998.


                                                       
s/KPMG LLP
KPMG  LLP
Kansas City, Missouri
April 12, 1999


<PAGE>




<PAGE>
                                                                   Exhibit 99.2

                               LAB HOLDINGS, INC.
                   PROXY SOLICITED BY THE BOARD OF DIRECTORS

   The undersigned  hereby constitutes and appoints P. Anthony Jacobs and Steven
K. Fitzwater and each of them, jointly and severally, as proxies, each with full
power of  substitution  and  revocation,  for and in the  name and  place of the
undersigned,  to vote all of the shares of $1.00 par value  common  stock of Lab
Holdings, Inc., a Missouri corporation (the "Company"), which the undersigned is
entitled to vote at the Annual Meeting of shareholders of the Company to be held
at _________________________,  ______, Kansas, on July ____, at 10:00 a.m. local
time, and at any adjournment or postponement thereof, as fully and with the same
effect as the undersigned might or could do if personally  present, as indicated
on the reverse side of this card.

                             (To be signed on Below)

                               (See Reverse Side)


PLEASE SIGN, DATE AND RETURN THE PROXY CARD PROMPTLY USING THE ENCLOSED ENVELOPE

Signature(s)                            Date
____________________________            _______________, 1999
____________________________            _______________, 1999

NOTE:  Please sign  exactly  as name appears  hereon.  Joint  owners should each
sign. When signing as attorney,  executor,  administrator,  trustee or guardian,
please give full title as such. If a corporation,  please sign in full corporate
name by President or other authorized officer. If a partnership,  please sign in
partnership name by authorized person.

<PAGE>
      Please date, sign and mail your proxy card back as soon as possible!

                         Annual Meeting of Shareholders
                               LAB HOLDINGS, INC.
                                 July __, 1999

Please Detach and Mail in the Envelope Provided


<TABLE>
<CAPTION>
<S>                                               <C>            <C>             <C>    
                                                     FOR             AGAINST         ABSTAIN
1.  Proposal to adopt  the Agreement and Plan of     / /             / /             / /
    Merger, as amended and restated dated as of
    March 7, 1999 and the transactions contemplated 
    thereby

                                                     FOR             AGAINST         ABSTAIN
2.  Proposal to amend  Paragraph B.4 of Article      / /             / /            / /
    X of the Articles of Incorporation

                                                                     WITHHOLD 
                                                     FOR             AUTHORITY
                                                     the nominees    to vote for the nominees
3.  Election of  two                                 / /             / /
    Class B Directors
                                                     Nominees:  John H. Robinson, Jr. and Lan C. Bentsen
                                                                (each for a term of three years)

FOR, except vote withheld from the following                    (Cumulative voting accepted. 
nominee:                                                        See Proxy Statement)
- -------------------------------------

                                                     FOR             AGAINST         ABSTAIN
4.  Proposal to appove KPMG LLP as                   / /             / /             / /
    independent public accountants

5. In their  discretion,  the  proxies are
   authorized  to vote  upon all other matters
   that may properly come before the meeting.
</TABLE>

     The Board of Directors recommends a vote FOR John H. Robinson,  Jr. and Lan
C. Bentsen as directors  and FOR each of the  proposals.  If you sign and return
this proxy it will be voted in the manner directed  herein.  This proxy contains
discretionary  authority  with  respect  to  matters  as to which no  choice  is
specified.  IF YOU DO NOT DESIGNATE  HOW YOUR SHARES ARE TO BE VOTED,  THE PROXY
WILL BE VOTED FOR JOHN H.  ROBINSON,  JR. AND LAN C.  BENTSEN AND FOR  PROPOSALS
(1), (2) and (4).

                                       

<PAGE>
                                                                   Exhibit 99.3

                                  LabOne, Inc.
                             10101 Renner Boulevard
                              Lenexa, Kansas 66219

         The undersigned hereby appoints W. Thomas Grant II and Gregg R. Sadler,
and  each of them,  jointly  and  severally,  as  proxies,  with  full  power of
substitution,  for the  undersigned  at the Annual  Meeting of  Stockholders  of
LabOne, Inc. at 10101 Renner Boulevard,  Lenexa, Kansas, on ______________ ____,
1999, at 10:00 a.m. C.D.T., and at any adjournment, to vote the shares of common
stock the undersigned would be entitled to vote, if personally present, upon the
proposals  stated on the  reverse  side of this  proxy  card,  the  election  of
Directors and any other matter brought  before the meeting,  all as set forth in
the ___________ ___, 1999 Joint Proxy Statement/ Prospectus.

                  (Continued and to be signed on reverse side)



<PAGE>



                 Please Detach and Mail in the Envelope Provided

[X]  Please mark your
     votes as in this
     example.

                THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" ON
                  PROPOSALS 1 AND 3 AND "GRANTED" ON PROPOSAL 2
<TABLE>
<CAPTION>


<S> <C>                                                                           <C>            <C>              <C>   
                                                                                     FOR             AGAINST           ABSTAIN
                                                                                                    
1.   Proposal  to  adopt  the  Agreement  and Plan of  Merger,  as  amended  and
     restated,  dated  as of March 7,  1999  and the  transactions  contemplated   [       ]         [       ]         [       ]
       thereby



2    The election of the following nominees as Directors, as                       Authority           Authority WITHHELD to
     set forth in the Joint Proxy Statement/ Prospectus (or a                     GRANTED to           vote for all nominees
     substitute nominee or nominees designated by the Board                       vote for all
     of Directors if any of them becomes unavailable): Joseph                       nominees
     H. Brewer, M.D., Peter C. Brown, William D. Grant, W.
     Thomas Grant II, Richard A., Rifkind, M.D., Richard S.
     Schweiker, James R. Seward, Robert D. Thompson,                               [        ]        [                       ]
     Chester B. Vanatta, John E. Walker, R. Dennis Wright
     and _______________________.

(INSTRUCTIONS:  To withhold authority to vote for any
individual nominee, line through that nominee's name in
the list above.)


                                                                                      FOR             AGAINST          ABSTAIN
3.   Ratification  of  the  appointment  of  KPMG  LLP  as  independent   public
     accountants.                                                                  [        ]         [       ]        [       ] 

</TABLE>

         This  Proxy  confers  discretionary  authority  to  vote  upon  certain
         matters,    as    described   in   the    accompanying  Joint   Proxy 
         Statement/Prospectus.

         Unless  otherwise  marked,  the Proxy  will be deemed  marked  "FOR" on
         Proposals  1  and  3 and  marked  "GRANTED"  on  proposal  2 and  voted
         accordingly.

         This Proxy is solicited by the Board of Directors.

         (Please sign, date and return this Proxy in the enclosed envelope.)


SIGNATURE _______________   DATE      , 1999 

SIGNATURE _______________   Date      , 1999     
                                                  

(SIGNATURE IF HELD JOINTLY)
(Note:   Please sign exactly as name appears hereon. Executors,  administrators,
         trustees,  etc., should so indicate when signing,  giving full title as
         such. If a signer is a corporation, execute in full corporation name by
         authorized  officer.  If  shares  are  held in the  name of two or more
         persons, all should sign.)







<PAGE>
                                                                   Exhibit 99.4
                   LETTER OF TRANSMITTAL AND FORM OF ELECTION

            FOR HOLDERS OF COMMON STOCK OF LABONE, INC. WHO WISH TO
             RECEIVE THEIR MERGER CONSIDERATION IN THE FORM OF CASH

    TO ACCOMPANY CERTIFICATES REPRESENTING COMMON STOCK OF LABONE, INC. WHEN
     SUBMITTED IN CONNECTION WITH THE MERGER OF LABONE, INC. WITH AND INTO
                               LAB HOLDINGS, INC.

          STOCKHOLDERS WHO WISH TO RECEIVE THEIR MERGER CONSIDERATION
           IN THE FORM OF SURVIVING CORPORATION COMMON STOCK NEED NOT
                         COMPLETE OR RETURN THIS FORM.

     This  form  (the  "Letter  of  Transmittal  and  Form of  Election")  is to
accompany  the  certificate(s)  for shares of common  stock,  par value $.01 per
share, of LabOne,  Inc.  ("LabOne Common Stock") when submitted in order to make
an  unconditional  election to receive  cash (an  "Election  to Receive  Cash"),
subject to possible  proration,  in  connection  with the  proposed  merger (the
"Merger")  of  LabOne,   Inc.("LabOne")   with  and  into  Lab  Holdings,   Inc.
("Holdings")  pursuant  to the  Agreement  and Plan of Merger,  as  amended  and
restated, dated as of March 7, 1999 (the "Merger Agreement").

     In order for an Election to Receive  Cash to be  effective,  this Letter of
Transmittal  and Form of  Election,  or a facsimile  hereof,  together  with the
certificate(s)  representing  shares of LabOne Common Stock (the "LabOne  Common
Stock  Certificate(s)")  described  in  Box I  below  (unless  such  shares  are
delivered  by  book-entry  transfer  to the  Disbursing  Agent's  account at the
Book-Entry  Transfer  Facility  (as  defined  below)) or a proper  guarantee  of
delivery  thereof,  must be properly  completed in accordance with the terms and
conditions  set forth  herein and  received by American  Stock  Transfer & Trust
Company (the "Disbursing  Agent"), at the address set forth below, no later than
10:00  a.m.,  Kansas  City  time,  on  _________,  1999,  the date of the LabOne
Stockholders Meeting (the "Election Date").


          To: American Stock Transfer & Trust Company, Disbursing Agent

By Mail:               By Facsimile:             By Hand or Overnight Courier:



                   Confirm by Telephone:

     Delivery of this Letter of  Transmittal  and Form of Election to an address
other than as set forth above does not  constitute  a valid  delivery.  Eligible
Institutions  (as  defined  in  Instruction  D(7)) may  deliver a  guarantee  of
delivery by facsimile. See Box V and Instruction D(1).

<PAGE>
Ladies and Gentlemen:   

     In connection  with the proposed  merger of LabOne with and into  Holdings,
the  undersigned  hereby submits the LabOne Common Stock  Certificate(s)  listed
below and  elects to have  shares of LabOne  Common  Stock  represented  by such
LabOne Common Stock  Certificate(s),  as designated in Box I, converted into (i)
the right to receive cash from the Surviving  Corporation  in an amount equal to
$12.75  (the "Cash Price Per Share") for all of such shares or (ii) the right to
receive the Cash Price Per Share for a stated whole number of such shares and to
receive  Surviving  Corporation  Common Stock for the balance of such shares. In
the event that the amount payable in cash to all LabOne stockholders who make an
Election  to  Receive  Cash  exceeds  $16,600,000  (the  "Maximum  Cash  Payment
Amount"), the undersigned  understands that he or she will receive a combination
of cash and shares of common stock,  par value $0.01 per share, of the Surviving
Corporation  ("Surviving  Corporation  Common Stock") for the shares as to which
the  undersigned has made an Election to Receive Cash, as provided in the Merger
Agreement.

     The  undersigned's  Election  to Receive  Cash is subject to (i) the terms,
conditions  and  limitations  set forth in the Joint Proxy  Statement/Prospectus
dated _______, 1999, relating to the Merger (the "Proxy Statement"),  receipt of
which  is  acknowledged  by the  undersigned,  (ii)  the  terms  of  the  Merger
Agreement,  a conformed copy of which appears as Annex I to the Proxy  Statement
and (iii) the  instructions  included in this Letter of Transmittal  and Form of
Election. In this regard, the undersigned understands and agrees as follows.

     (i) Its  Election  to  Receive  Cash  will  be  properly  made  only if the
Disbursing Agent receives at its designated  office,  by 10:00 a.m., Kansas City
time, on the Election  Date,  this Letter of  Transmittal  and Form of Election,
properly  completed  and  signed (or in the case of a book  entry  transfer,  an
Agent's  Message),  together with  certificates  for the shares of LabOne Common
Stock to which such Letter of Transmittal and Form of Election relates, properly
endorse  otherwise in proper form for transfer (or  confirmation of a book-entry
transfer  into  the  Disbursing  Agent's  account  at  the  Book-Entry  Transfer
Facility)  or  accompanied  by an  appropriate  guarantee  of  delivery  of such
certificates from an Eligible  Institution.  Failure to deliver certificates (or
confirmation of book-entry  transfer)  covered by a guarantee of delivery within
three  trading days after the date of  execution  of such  guarantee of delivery
shall be deemed to invalidate  any  otherwise  properly made Election to Receive
Cash.

     (ii) The  undersigned  may revoke  this Letter of  Transmittal  and Form of
Election only by written notice received by the Disbursing  Agent prior to 10:00
a.m., KansasCity time, on the Election Date. Further, this Letter of Transmittal
and Form of Election shall  automatically  be revoked if the Disbursing Agent is
notified in writing by Holdings  and LabOne that the Merger has been  abandoned.
If a Form  of  Election  is  revoked,  the  certificate  or  certificates  (or g
delivery,  as  appropriate)  for the shares of LabOne Common Stock to which this
Letter of Transmittal and Form of Election relates shall be promptly returned to
the undersigned by the Disbursing Agent.

     (iii) The Surviving  Corporation has the discretion,  which it may delegate
in whole or in part to the Disbursing Agent, to determine whether this Letter of
Transmittal  and  Form of  Election  has been  properly  completed,  signed  and
submitted  and to  disregard  any  defects it  determines  are  immaterial.  The
decision of Surviving  Corporation or the Disbursing Agent on such matters shall
be conclusive and binding.  Neither Holdings,  LabOne, the Surviving Corporation
nor the Disbursing  Agent shall under any obligation to notify any person of any
defect  in this  Letter  of  Transmittal  and  Form of  Election.  If  Surviving
<PAGE>
Corporation or Disbursing Agent shall determine that the undersigned's purported
Election to Receive Cash was not properly made, such purported election shall be
deemed to be of no force and  effect,  the  undersigned  shall be deemed to have
made a Stock Election and the shares submitted  herewith shall be converted into
shares of Surviving Corporation Common Stock. The Surviving Corporation reserves

                                       2
the right to waive any defects in a Letter of  Transmittal  and Form of Election
but is under no obligation to do so.

     (iv) If the Maximum Cash Payment Amount is exceeded,  the Disbursing  Agent
shall  make all  computations  as to the  proration  contemplated  by the Merger
Agreement,  and any such  computation  shall be  conclusive  and  binding on the
Undersigned.

     The  undersigned  authorizes  and instructs  you, as Disbursing  Agent,  to
deliver  to  the  Surviving   Corporation  LabOne  Common  Stock  Certificate(s)
submitted herewith (or to transfer ownership of such shares on the account books
maintained  by the Book Entry  Transfer  Facility  to, or upon the order of, the
Surviving Corporation) and to receive on behalf of the undersigned,  in exchange
for the shares of LabOne Common Stock  represented  thereby,  the Cash Price Per
Share  payable and, if  applicable,  a  certificate  for the shares of Surviving
Corporation  Common Stock  issuable  (the  "Surviving  Corporation  Common Stock
Certificate"),  in respect of those shares of LabOne  Common Stock in connection
with the Merger.  If the LabOne  Common Stock  Certificate(s)  is not  delivered
herewith (and no book-entry transfer made), there is furnished below a guarantee
of  delivery  of such  LabOne  Common  Stock  Certificate(s)  from  an  Eligible
Institution (as defined below).

     The  undersigned  represents  and  warrants  (and if more  than  one,  each
undersigned  represents and warrants jointly and severally) that the undersigned
has full power and authority to assign and transfer the shares  evidenced by the
LabOne  Common  Stock   Certificate(s)   surrendered   and  that  the  Surviving
Corporation will acquire good title to such LabOne shares, free and clear of all
liens, restrictions, charges, encumbrances, pledges, security interests or other
obligations  affecting the  assignment or transfer of the LabOne shares and will
not be subject to any adverse  claim.  All  authority  conferred or agreed to be
conferred  in this  Letter  of  Transmittal  and Form of  Election  shall not be
affected by, and shall survive, the death or incapacity of the undersigned,  and
any obligation of the  undersigned  under this Letter of Transmittal and Form of
Election  shall  be  binding  upon  successors,   assigns,   heirs,   executors,
administrators and legal representatives of the undersigned.

     Upon request,  the undersigned agrees to execute and deliver any additional
documents deemed reasonably necessary or desirable by the Surviving  Corporation
or the  Disbursing  Agent to complete  the  exchange of the LabOne  Common Stock
Certificate(s).  If  required  by  Instruction  D(7),  the LabOne  Common  Stock
Certificate(s) submitted with this Letter of Transmittal and Form of Election is
duly  endorsed or in a form  otherwise  acceptable  for transfer on the books of
LabOne.

     Unless otherwise indicated under Special Payment Instructions below, please
make any check  payable  to the  order  of,  and (if  applicable)  register  any
Surviving  Corporation  Common Stock  Certificate in the name of, the registered
holder(s) of the shares of LabOne Common Stock  represented by the LabOne Common
Stock  Certificate(s)  surrendered  with this Letter of Transmittal  and Form of
Election.   Similarly,   unless  otherwise   indicated  under  Special  Delivery
Instructions,  please mail any check payable and (if  applicable)  any Surviving
Corporation  Common  Stock  Certificate  issuable in exchange  for the shares of
<PAGE>

LabOne  Common  Stock  represented  by the LabOne  Common  Stock  Certificate(s)
submitted with this Letter of Transmittal and Form of Election to the registered
holder(s) of the shares of LabOne Common Stock at the address or addresses shown
in Box I below.

                                       3

PLEASE READ CAREFULLY THE ACCOMPANYING INSTRUCTIONS  

BOX I:   ELECTION  TO  RECEIVE  CASH  FOR  LABONE  COMMON  STOCK  CERTIFICATE(S)
         SURRENDERED

     Please  list  in  this  Box I all  the  LabOne  Common  Stock  Certificates
representing  any  shares of LabOne  Common  Stock for which you wish to make an
Election to Receive Cash (all of which  should be submitted  with this Letter of
Transmittal  and Form of Election unless  arrangements  are made for delivery of
such shares by  book-entry  transfer to the  Disbursing  Agent's  account at the
Book-Entry  Transfer  Facility).  If there is not enough space below to list all
the LabOne  Common  Stock  Certificates  surrendered,  please  attach a separate
sheet.  Submit a separate  Letter of Transmittal and Form of Election for shares
of LabOne Common Stock registered in different names (see Instruction D(4)). You
may elect to receive  cash for any whole  number of shares,  whether  all or any
portion of the shares of LabOne Common Stock that you hold.  Please  indicate in
the space provided the number of whole shares of LabOne Common Stock represented
by each LabOne  Common Stock  Certificate  surrendered  for which an Election to
Receive  Cash is being  made.  Any  shares of LabOne  Common  Stock for which an
Election to Receive Cash is not properly  made prior to 10:00 a.m.,  Kansas City
time,  on the Election  Date,  or for which such an election  has been  properly
revoked  prior to 10:00 a.m.,  Kansas City time, on the Election  Date,  will be
converted into Surviving  Corporation  Common Stock at the Effective Time of the
Merger.  Do not complete this Letter of Transmittal and Form of Election for any
shares that you want converted into Surviving  Corporation  Common Stock. At the
Effective  Time of the Merger,  LabOne shares as to which no Election to Receive
Shares has been made will be automatically  converted into and will represent an
equivalent   number  of   shares  of   Surviving   Corporation   Common   Stock.
- -------------------------------------------------------------------------------

<TABLE>
<CAPTION>
NAME(S) AND ADDRESS(ES) OF  
REGISTERED HOLDER(S)               LABONE COMMON STOCK CERTIFICATE(S) ENCLOSED                                                    

<S>                         <C>                    <C>                  <C>
                                                   TOTAL NUMBER         NUMBER OF
                                                   OF SHARES            WHOLE SHARES FOR
                            LABONE COMMON          REPRESENTED          WHICH A CASH
(PLEASE FILL IN IF LABEL    STOCK CERTIFICATE      BY EACH              ELECTION IS
IS NOT AFFIXED)             NUMBER(S)*             CERTIFICATE (OR      MADE
                                                   COVERED BY A
                                                   GUARANTEE OF
                                                   DELIVERY)

- ------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------
</TABLE>
                                Total Shares:   ________________________________









<PAGE>

* Not required if  certificates  will be delivered  using  guarantee of delivery
procedures.
                         Delivery by Book-Entry Transfer

                                       4

                               See Instruction A-1

[ ] Check  here if  LabOne  certificates  are  being  delivered  by  Book-Entry
    Transfer to  the  Disbursing  Agent's  account  on the  book-entry  transfer
    facilities at the Depository Trust Company ("Book-Entry  Transfer Facility")
    and complete the following:

    Account number ______________         Transaction Code No._________________

BOX II: SPECIAL PAYMENT                  BOX III: SPECIAL DELIVERY           
INSTRUCTIONS                             INSTRUCTIONS  
(SEE INSTRUCTIONS D(6) AND D(7))         (SEE INSTRUCTIONS D(8))     

To be completed ONLY if the              To be completed ONLY if the 
check is to be made payable to           check or (if applicable) the
the order of, or (if applicable)         Surviving Corporation Common Stock
the Surviving Corporation Common        Certificate is to be sent to an address
Stock Certificate is to be issued to,    other than the address of the 
a person other than the person in        registered holder(s) set forth in 
whose name the LabOne Common             Box I above, or if Box II is com-
Stock Certificate(s) submitted           pleted, to an address other than 
for exchange herewith is regis-          the address appearing in Box II. 
tered.  

Issue the Merger consideration (whether  Mail the Merger consideration  (whether
cash or Surviving Corporation Common     cash or  Surviving  Corporation  Common
Stock) to:                               Stock to:

Name _______________________________     Name ________________________________
           (PLEASE PRINT)                              (PLEASE PRINT)

____________________________________     _______________________________________
           (PLEASE PRINT)                              (PLEASE PRINT)

Address ____________________________     Address _______________________________
           (PLEASE PRINT)                              (PLEASE PRINT)
____________________________________     _______________________________________
       (INCLUDING ZIP CODE)                         (INCLUDING ZIP CODE)

____________________________________
   (TAX IDENTIFICATION OR SOCIAL         
        SECURITY NUMBER) 

Credit Surviving Corporation Common
Stock to the Book-Entry Transfer
Facility Account set below:

____________________________________
(Book-Entry Transfer Facility
Account Number)
 
                                        5
<PAGE>
   BOX IV: SIGN HERE AND, IF REQUIRED UNDER INSTRUCTION D(7), HAVE SIGNATURES
                     GUARANTEED BY AN ELIGIBLE INSTITUTION
        (SEE INSTRUCTIONS D(1) AND D(7) CONCERNING SIGNATURE GUARANTEE)
________________________________________________________________________________



- ------------------------------------     Name(s): _____________________________
- ------------------------------------                     (PLEASE PRINT)  

- ------------------------------------      
(SIGNATURE(S) OF OWNER(S))               Name(s): ______________________________
                                                          (PLEASE PRINT)   

Must be signed by registered 
holder(s) exactly as name(s)              Name(s): ____________________________
appears on the LabOne Common Stock                         (PLEASE PRINT) 
Certificate(s) or by person(s)            ______________________________________
authorized to become registered           ______________________________________
holder(s) by the LabOne Common          
Stock Certificate(s) and documents         (AREA CODE AND TELEPHONE NUMBER(S)) 
transmitted herewith. If signature        ______________________________________
is by a trustee, executor,                ______________________________________
administrator, guardian, officer of       ______________________________________
a corporation, attorney-in-fact or          (EMPLOYER IDENTIFICATION OR SOCIAL 
any other person acting in a                         SECURITY NUMBER(S)) 
fiduciary capacity, set forth full 
title in such capacity. See 
Instruction D(3).                                          
                                          Dated: _______________________  , 1999


                            Signature(s) Guaranteed:
                             (SEE INSTRUCTION D(7))

     The undersigned  hereby guarantees the signature(s)  which appear(s) on The
Letter of Transmittal and Form of Election.

Dated:_____________________

________________________________________________________________________________

                (Name of Eligible Institution Issuing Guarantee)
                                 [Please Print]

________________________________________________________________________________

                          (Affix Medallion Stamp Above)

                                       6









<PAGE>

                          BOX V: GUARANTEE OF DELIVERY
                          (ELIGIBLE INSTITUTIONS ONLY)
          TO BE USED ONLY IF LABONE COMMON STOCK CERTIFICATE(S) IS NOT
                              SURRENDERED HEREWITH

          Eligible Institutions May Deliver this Guarantee of Delivery
                           by Facsimile Transmission:
                                 (---) --------
                                       or
                                (--- ) --------
                        Confirm Facsimile by Telephone:
                                 (---) --------

- ------------------------------------------------------------------------------

The undersigned is an Eligible            __________________________________
Institution, and guarantees to                      FIRM--PLEASE PRINT) 
deliver to the Disbursing Agent the       ______________________________________
LabOne Common Stock Certificate(s)                  (AUTHORIZED SIGNATURE) 
to which this Letter of Transmittal       ______________________________________
and Form of Election relates,             ______________________________________
duly endorsed or in form otherwise        ______________________________________
acceptable for transfer on the books                     (ADDRESS)
of LabOne,  within  three (3)
trading days after the                    ______________________________________
date of execution of this Guarantee          (AREA CODE AND TELEPHONE NUMBER)
of Delivery.                              ______________________________________
                                                      (CONTACT NAME) 

[ ]Check here if LabOne  certificates will be delivered by book-entry  transfer
   to the Disbursing Agent's account at the Depository Trust Company.

   Account Number________________


                       NOTICE OF DELIVERY UNDER GUARANTEE
 (TO BE COMPLETED UPON DELIVERY OF SHARES PURSUANT TO A GUARANTEE OF DELIVERY)

Name(s) of Registered Holder(s): ______________________________________________
Window Ticket No. (if any): ____________________________________________________
Date of Execution of Guarantee of Delivery: ____________________________________
Name of Institution which provided Guarantee of Delivery: ______________________

[ ]Check here if delivered by book-entry  transfer to the  Disbursing  Agent's
   Account at the Book-Entry Transfer Facility.

   Account Number:____________      Transaction Code Number:____________________

                                       7









<PAGE>

          REQUEST FOR TAXPAYER IDENTIFICATION NUMBER AND CERTIFICATION

PAYER'S NAME:  American Stock Transfer & Trust Company              

                  PART 1--PLEASE PROVIDE              Social Security Number OR
                  YOUR TIN IN THE BOX AT THE           Employer Identification 
                  RIGHT AND CERTIFY BY                 Number                
                  SIGNING AND DATING.                  _________________________

SUBSTITUTE 
FORM W-9 
DEPARTMENT OF                                           
THE TREASURY                 ___________________________________________________
INTERNAL                     PART 2--Please check the box at the right if you 
REVENUE                     have applied for, and are awaiting receipt of, your
SERVICE                      TIN.
                                                            [_]  
- --------------------------------------------------------------------------------

CERTIFICATION--UNDER PENALTIES OF PERJURY, I CERTIFY THAT: 

(1)  The number shown on this form is my correct Taxpayer  Identification Number
     (or I am waiting for a number to be issued to me), and

(2)  I am not subject to backup withholding because: (a) I am exempt from backup
     withholding,  or (b) I have  not  been  notified  by the  Internal  Revenue
     Service  (IRS)  that I am subject  to backup  withholding  as a result of a
     failure to report all interest or dividends, or (c) the IRS has notified me
     that I am no longer subject to backup withholding.

CERTIFICATION  INSTRUCTIONS--You  must cross out item (2) above if you have been
notified by the IRS that you are currently subject to backup withholding because
you have  failed to report  all  interest  and  dividends  on your tax  returns.
However,  if after  being  notified  by the IRS that you were  subject to backup
withholding  you  received  another  notification  from  the IRS that you are no
longer subject to backup  withholding,  do not cross out item (2). (Also see the
enclosed  Guidelines  for  Certification  of Taxpayer  Identification  Number on
Substitute Form W-9.)

SIGNATURE __________________________________________      DATE __________, 1999

IF YOU CHECKED THE BOX IN PART 2 OF THE  SUBSTITUTE  FORM W-9, YOU MUST SIGN AND
DATE THE FOLLOWING CERTIFICATION:

CERTIFICATION OF AWAITING TAXPAYER IDENTIFICATION NUMBER

I CERTIFY, UNDER PENALTIES OF PERJURY, THAT A TAXPAYER IDENTIFICATION NUMBER HAS
NOT BEEN ISSUED TO ME, AND THAT I MAILED OR DELIVERED AN  APPLICATION TO RECEIVE
A  TAXPAYER  IDENTIFICATION  NUMBER  TO THE  APPROPRIATE  IRS  CENTER  OR SOCIAL
SECURITY ADMINISTRATION OFFICE (OR I INTEND TO MAIL OR DELIVER AN APPLICATION IN
THE  NEAR  FUTURE).   I  UNDERSTAND   THAT  IF  I  DO  NOT  PROVIDE  A  TAXPAYER
IDENTIFICATION  NUMBER TO THE  PAYER,  31  PERCENT  OF ALL  PAYMENTS  MADE TO ME
PURSUANT  TO  THIS  MERGER  SHALL  BE  RETAINED   UNTIL  I  PROVIDE  A  TAXPAYER
IDENTIFICATION  NUMBER TO THE PAYER AND THAT,  IF I DO NOT  PROVIDE MY  TAXPAYER
IDENTIFICATION  NUMBER WITHIN SIXTY (60) DAYS,  SUCH  RETAINED  AMOUNTS SHALL BE

                                       8

<PAGE>

REMITTED  TO THE IRS AS BACKUP  WITHHOLDING  AND 31  PERCENT  OF ALL  REPORTABLE
PAYMENTS MADE TO ME THEREAFTER  WILL BE WITHHELD AND REMITTED TO THE IRS UNTIL I
PROVIDE A TAXPAYER IDENTIFICATION NUMBER.

SIGNATURE __________________________________________      DATE __________, 1999

NOTE:  FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
OF 31% OF ANY PAYMENTS MADE TO YOU PURSUANT TO THE ELECTION.

PLEASE   REVIEW  THE  ENCLOSED   GUIDELINES   FOR   CERTIFICATION   OF  TAXPAYER
IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.

                                       9





<PAGE>
                                 INSTRUCTIONS

A. SPECIAL CONDITIONS.   

1.   Time in Which to  Elect.  Any  Election  to  Receive  Cash  will  have been
     properly made only if the Disbursing  Agent has received at the address set
     forth above,  by 10:00 a.m. , New York City time, on the date of the LabOne
     Stockholders  Meeting (the "Election Date"), this Letter of Transmittal and
     Form of Election or a facsimile hereof,  properly  completed and signed (or
     in the case of a book-entry  transfer,  an Agent's Message),  together with
     certificates  for the shares of LabOne  Common Stock to which the Letter of
     Transmittal and Form of Election relates, properly endorsed or otherwise in
     proper form for transfer (or confirmation of a book-entry transfer into the
     Disbursing Agent's account at the Book-Entry Transfer Facility). Holders of
     shares of LabOne Common Stock whose LabOne Common Stock  Certificate(s) are
     not immediately available, or holders who cannot complete the procedure for
     book-entry  transfer on a timely basis, may also make an effective Election
     to  Receive  Cash by  completing  this  Letter of  Transmittal  and Form of
     Election or facsimile  hereof and having the Guarantee of Delivery box (Box
     V)  properly  completed  and  duly  executed  by an  Eligible  Institution,
     provided such LabOne Common Stock  Certificate(s)  or a  confirmation  of a
     book-entry  transfer of such shares,  if such procedure is available,  into
     the Disbursing Agent's account at the Book-Entry  Transfer facility,  is in
     fact delivered to the Disbursing  Agent within three (3) trading days after
     the date of execution of the  guarantee  of delivery.  In addition,  at the
     time the  certificates  are delivered (or book-entry  transfer is effected)
     pursuant to the  guarantee of delivery,  the  guarantor  must submit to the
     Disbursing  Agent another Letter of  Transmittal  and Form of Election with
     only the section  entitled  "Notice of Delivery Under  Guarantee"  properly
     completed (or must  otherwise  provide such  information  to the Disbursing
     Agent).  If the  guarantor  fails to deliver  the  certificates  (or effect
     book-entry  transfer) in accordance with the guaranteed delivery procedures
     contained  herein,  without  limitation  of other  recourse,  any purported
     Election to Receive Cash with respect to the LabOne shares  subject to such
     guarantee  will be  void.  The  term  "Agent's  Message"  means a  message,
     transmitted  by the Book-Entry  Transfer  Facility to, and received by, the
     Disbursing  Agent and forming a part of a  book-entry  confirmation,  which
     states  that the  Book-Entry  Transfer  Facility  has  received  an express
     acknowledgment  from the  participant in the Book-Entry  Transfer  Facility
     delivering the LabOne shares that such  participant has received and agrees
     to be bound by the terms of this Letter of Transmittal and Form of Election
     and that the Surviving  Corporation may enforce such agreement  against the
     participant.  HOLDERS OF SHARES OF LABONE  COMMON  STOCK WHO DO NOT MAKE AN
     EFFECTIVE  ELECTION OR WHO PROPERLY  REVOKE SUCH AN ELECTION,  PRIOR TO THE
     ELECTION DATE WILL BE DEEMED TO HAVE MADE A STOCK ELECTION AND THEIR SHARES
     WILL BE CONVERTED INTO SURVIVING  CORPORATION COMMON STOCK AT THE EFFECTIVE
     TIME OF THE MERGER. SEE INSTRUCTION B.

2.   Revocation of Election to Receive Cash..  Any holder of LabOne Common Stock
     who has  made an  Election  to  Receive  Cash by  submitting  a  Letter  of
     Transmittal  and Form of Election to the  Disbursing  Agent may revoke such
     election by written notice received by the Disbursing  Agent prior to 10:00
     A.M.,  Kansas City time, on the Election Date. Such notice must specify the
     person in whose  name the  LabOne  certificates  to be  withdrawn  had been
     deposited,  the number of LabOne  shares to be  withdrawn,  the name of the
     registered  holder thereof and the serial numbers shown on the certificates
     representing the LabOne shares to be withdrawn. If an Letter of Transmittal
     and Form of Election is revoked, the LabOne Common Stock Certificate(s) (or
     guarantee of delivery,  as  appropriate) to which the Letter of Transmittal
<PAGE>
     and Form of  Election  relates  will be  promptly  returned  to the  LabOne
     stockholder  submitting  the same to the  Disbursing  Agent.  Upon any such
     revocation,  unless a duly  completed  Letter  of  Transmittal  and Form of
     Election is thereafter  submitted in  accordance  with the  procedures  set
     forth  in the  Proxy/Statement  Prospectus,  such  LabOne  shares  shall be
     converted into Surviving Corporation Common Stock in the Merger.

                                       11

3.   Termination of Election and Return of LabOne Common Stock  Certificates  if
     Merger Abandoned.  All Letters of Transmittal and Forms of Election will be
     automatically  revoked if the  Disbursing  Agent is  notified in writing by
     Holdings and LabOne that the Merger has been  abandoned.  In such case, all
     LabOne  Common  Stock   Certificates   (or   guarantees  of  delivery,   as
     appropriate)  to which the  Letters of  Transmittal  and Forms of  Election
     relate will be promptly  returned to the LabOne  stockholders who submitted
     the same to the Disbursing Agent. LabOne shares held through the Depository
     Trust  Company  are all  expected  to be  available  for  sale or  transfer
     promptly following termination.

B.   EFFECTIVENESS OF ELECTIONS OF ELECTION AND PRORATION PROCEDURES.   

     This Letter of  Transmittal  and Form of  Election  enables you to elect to
receive  cash,  subject to possible  proration,  in exchange  for your shares of
LabOne Common Stock. You may use this Letter of Transmittal and Form of Election
to make an  Election  to Receive  Cash (i) with  respect to all of the shares of
LabOne  Common  Stock that you hold or (ii) with  respect to any whole number of
shares  constituting  a portion  of the shares of LabOne  Common  Stock that you
hold. If you fail to properly make an Election to Receive Cash or fail to submit
to the Disbursing Agent a properly  completed and signed and properly and timely
submitted Letter of Transmittal and Form of Election, you will be deemed to have
made a Stock  Election and will receive  Surviving  Corporation  Common Stock as
Merger  consideration.  If the aggregate  amount of cash requested by holders of
LabOne  Common  Stock  pursuant to  effective  Elections to Receive Cash exceeds
$16,600,000 ( the" Maximum Cash Payment Amount"),  you will not receive the full
amount of cash to which you  otherwise  would be  entitled,  but will  receive a
combination of cash and Surviving  Corporation  Common Stock.  The allocation of
cash and shares of Surviving  Corporation Common Stock that you will receive for
each share of LabOne  Common Stock for which an  effective  Elections to Receive
Cash has been made will  depend on the  proration  procedures  to be  applied as
described below.

     At the effective time of the Merger (the "Effective  Time"),  each share of
LabOne Common Stock for which an effective Election to Receive Cash is made will
be converted into the right to receive,  subject to possible proration,  cash in
an amount  equal to $12.75  (the "Cash Price Per  Share").  Each share of LabOne
Common  Stock for which an  effective  Election to Receive  Cash is not properly
made, or for which such an election has been properly revoked, will be converted
into one (1) share of Surviving Corporation Common Stock.

     Cash Proration.  In the event that the amount of cash requested exceeds the
Maximum  Cash Payment  Amount (as defined  below),  each share of LabOne  Common
Stock for which an  Election  to  Receive  Cash is made  (each a "Cash  Election
Share")  will be converted  into the right to receive a prorated  amount of cash
and Surviving  Corporation Common Stock. The Maximum Cash Payment Amount,  which
is the maximum  aggregate  amount of cash to be paid to holders of LabOne Common
Stock in the  Merger,  will be equal to  $16,600,000.  If the product of (x) the
number of Cash  Election  Shares  and (y) the Cash Price Per Share  exceeds  the
Maximum Cash Payment  Amount,  then each Cash Election  Share shall be converted
<PAGE>

into the right to receive:

          (1) an amount in cash  (rounded  to the  nearest  cent and  subject to
     adjustment), without interest, equal to the product of (A) $12.75 and (B) a
     fraction ("Cash Fraction"), the numerator of which shall be $16,600,000 and
     the denominator of which shall be the aggregate  amount payable (except for
     the  Maximum  Cash  Payment  Amount  limitation)  with  respect to all Cash
     Election Shares; and

          (2) a number of shares of Surviving  Corporation Common Stock equal to
     the product of (A) one (1)  multiplied  by (B) a fraction  equal to one (1)
     minus the Cash Fraction.  If the product  resulting from the application of
     clauses  (2)(A) and (B) results in a fractional  share (taking into account
     all Cash Election Shares held by a holder), then the number of shares to be
     issued  such  holder  shall be rounded up to the  nearest  whole  number of
     shares and the amount of cash payable to such holder under clause (1) shall
     be reduced by $12.75 less the value of such fractional share.

                                       11

If the aggregate amount payable with respect to all Cash Election Shares is less
than the Maximum  Cash Payment  Amount,  then each Cash  Election  Share will be
converted into the right to receive the Cash Price Per Share.

IN CONNECTION WITH MAKING AN ELECTION TO RECEIVE CASH, A HOLDER OF LABONE COMMON
STOCK SHOULD READ THE PROXY  STATEMENT  CAREFULLY,  INCLUDING THE DESCRIPTION OF
THE  PRORATION,  ELECTION AND EXCHANGE  PROCEDURES SET FORTH UNDER "THE PROPOSED
MERGER--EXCHANGE  OF  LABONE  SHARES  AND CASH  ELECTIONS"  AND THE  INFORMATION
CONTAINED IN THE PROXY STATEMENT UNDER "THE  MERGER--CERTAIN  FEDERAL INCOME TAX
CONSEQUENCES."

AS A RESULT  OF THE  PRORATION  PROCEDURES  SET FORTH IN THE  MERGER  AGREEMENT,
HOLDERS  OF SHARES OF  LABONE  COMMON  STOCK  MAY  RECEIVE  SHARES OF  SURVIVING
CORPORATION  COMMON STOCK AND/OR CASH IN AMOUNTS THAT VARY FROM THE AMOUNTS SUCH
HOLDERS ELECT TO RECEIVE. SUCH HOLDERS WILL NOT BE ABLE TO CHANGE THE AMOUNTS OF
CASH OR SHARES OF SURVIVING  CORPORATION COMMON STOCK ALLOCATED TO THEM PURSUANT
TO SUCH PROCEDURES.

C. MAILING OF CHECKS AND SURVIVING CORPORATION COMMON STOCK CERTIFICATES.

     As soon as  practicable  after the  Effective  Time of the  Merger  and the
surrender to the Disbursing Agent, pursuant to these instructions, of the LabOne
Common Stock  Certificate(s) for Cash Election Shares registered to a particular
record holder or holders,  the Disbursing Agent will mail cash payments by check
and, if applicable,  Surviving  Corporation  Common Stock  Certificate(s) to the
holder or holders with respect to each Cash Election Share.

HOLDERS OF SHARES OF LABONE  COMMON STOCK WHO DO NOT MAKE AN EFFECTIVE  ELECTION
TO RECEIVE CASH, OR WHO PROPERLY REVOKE SUCH AN ELECTION,  PRIOR TO THE ELECTION
DATE,  WILL BE DEEMED TO HAVE MADE A STOCK  ELECTION  AND THEIR  SHARES  WILL BE
CONVERTED INTO SURVIVING  CORPORATION  COMMON STOCK AT THE EFFECTIVE TIME OF THE
MERGER.

D. GENERAL.

1.   Execution and Delivery.  This Letter of Transmittal and Form of Election or
     a facsimile hereof must be properly completed,  dated and signed in Box IV,
     and must be delivered, together with the LabOne Common Stock Certificate(s)
<PAGE>

     representing  the shares of LabOne  Common  Stock for which an  Election to
     Receive Cash is made (or with a duly executed guarantee of delivery of such
     LabOne  Common  Stock  Certificate(s))  to  the  Disbursing  Agent  at  the
     appropriate address set forth above.

     The method of delivery of all  documents to be delivered to the  Disbursing
     Agent is at the option of the  stockholder.  The risk of loss of, and title
     to, the LabOne Common Stock Certificate(s) shall pass only upon delivery of
     such LabOne Common Stock Certificate(s) to the Disbursing Agent. If sent by
     mail,  registered mail, return receipt  requested and properly insured,  is
     suggested.

2.   Inadequate  Space.  If  there  is  insufficient  space  on this  Letter  of
     Transmittal  and Form of  Election  to list  all the  LabOne  Common  Stock
     Certificates  you are submitting to the Disbursing  Agent,  please attach a
     separate list.

                                     12

3.   Signatures.  The  signature  (or  signatures,  in the case of LabOne Common
     Stock  Certificates  owned by two or more joint  holders) on this Letter of
     Transmittal and Form of Election should  correspond  exactly to the name(s)
     as written on the face of the LabOne Common Stock Certificate(s)  submitted
     unless  the  shares of LabOne  Common  Stock  described  on this  Letter of
     Transmittal  and Form of  Election  have been  assigned  by the  registered
     holder(s),  in which event this Letter of Transmittal  and Form of Election
     should  be  signed  in  exactly  the  same  form as the  name  of the  last
     transferee indicated on the transfers attached to or endorsed on the LabOne
     Common Stock Certificate(s).

     If this Letter of Transmittal and Form of Election is signed by a person or
     persons  other  than the  registered  owners  of the  LabOne  Common  Stock
     Certificate(s)  listed,  the LabOne  Common  Stock  Certificate(s)  must be
     endorsed or accompanied by appropriate  stock powers, in either case signed
     exactly as the  name(s) of the  registered  owner(s)  appears on the LabOne
     Common Stock Certificate(s).

     If this Letter of Transmittal and Form of Election, any LabOne Common Stock
     Certificate  or  any  stock  power  is  signed  by  a  trustee,   executor,
     administrator, guardian, officer of a corporation,  attorney-in-fact or any
     other person acting in a representative or fiduciary  capacity,  the person
     signing must give such person's full title in such capacity and appropriate
     evidence of authority to act in such capacity  must be forwarded  with this
     Letter of Transmittal and Form of Election.

4.   Shares  Registered in Different Names. If shares of LabOne Common Stock are
     registered in different names on several LabOne Common Stock  Certificates,
     it will be  necessary  to  complete,  sign and submit a separate  Letter of
     Transmittal  and Form of  Election  for each  different  registration.  For
     example,  if some LabOne Common Stock  Certificates  are registered in your
     name,  some are  registered in your  spouse's name and some are  registered
     jointly, three separate Letter of Transmittal and Form of Elections must be
     submitted.

5.   Lost, Stolen or Destroyed LabOne Common Stock Certificates.  If your LabOne
     Common Stock  Certificate(s)  has been lost,  stolen or  destroyed,  please
     contact _______________________at ( ) ___-____. You will then be instructed
     as to the steps you must take in order to receive  cash  payments  by check
<PAGE>

     and, if applicable,  Surviving  Corporation Common Stock  Certificate(s) in
     accordance with the Merger Agreement.

6.   Checks and Surviving Corporation Common Stock Certificates in Same Name. If
     the check is to be made  payable to the order of, and (if  applicable)  the
     Surviving  Corporation  Common  Stock  Certificate  is to be issued to, the
     person(s) whose name(s)  appears on the LabOne Common Stock  Certificate(s)
     submitted with this Letter of Transmittal and Form of Election, endorsement
     of the LabOne Common Stock Certificate(s) or separate stock power(s) is not
     required.

7.   Checks and Surviving  Corporation  Common Stock  Certificates  in Different
     Name.  If the  check  is to be  made  payable  to the  order  of,  and  (if
     applicable)  the Surviving  Corporation  Common Stock  Certificate is to be
     issued to, a person  other than the person in whose name the LabOne  Common
     Stock  Certificate(s)  submitted for exchange herewith is registered,  such
     exchange will not be made by the Disbursing  Agent unless the LabOne Common
     Stock  Certificate(s)   submitted  is  endorsed  or  in  a  form  otherwise
     acceptable for transfer on the books of LabOne, Box II is completed and the
     signature is guaranteed in Box IV by a by an eligible guarantor institution
     (an"Eligible  Institution")  pursuant to Rule 17Ad-15 promulgated under the
     Securities  Exchange Acto of 1934  (generally a member firm of the New York
     Stock  Exchange  or any bank or  trust  company  which  is a member  of the
     Medallion Program). Public notaries cannot execute acceptable guarantees of
     signatures.  In the event of a transfer of ownership of LabOne Common Stock
     that is not registered in the transfer records of LabOne,  the check may be
     made payable to the order of, and (if  applicable) a Surviving  Corporation
     Common Stock  Certificate  may be issued to, a person other than the person
     in whose name the LabOne  Common Stock  Certificate(s)  so  surrendered  is
     registered

                                       13

     only if the person  requesting  such payment and (if  applicable)  issuance
     pays any  transfer  or other taxes  required  by reason of such  payment or
     issuance or establishes to the  satisfaction of Surviving  Corporation that
     such tax has been paid or is not applicable.

8.   Special  Delivery  Instructions.  If the  check  and  (if  applicable)  the
     Surviving  Corporation Common Stock Certificate is to be sent to an address
     other than the address of the  registered  holder set forth in Box I or, if
     Box II is completed,  to an address other than the address appearing in Box
     II, indicate such address in Box III.

9.   Miscellaneous.  A single  check  and (if  applicable)  a  single  Surviving
     Corporation  Common  Stock  Certificate  will be issued with respect to all
     shares of LabOne  Common  Stock  represented  by the  LabOne  Common  Stock
     Certificate(s)  surrendered  with this  Letter of  Transmittal  and Form of
     Election  to  the   person(s)  in  whose  name  the  LabOne   Common  Stock
     Certificate(s) so surrendered is registered, or to the person(s) designated
     in Box II, if applicable (See Instruction D(7)).

     The  determination  of the  Disbursing  Agent  whether or not  Elections to
     Receive  Cash have been  properly  made or revoked  and when  Elections  to
     Receive Cash and revocations were received by it shall be binding.

10.  Stock Transfer Taxes.  The Surviving  Corporation  shall bear the liability
     for any stock  transfer  taxes  applicable  to the issuance and delivery of
<PAGE>

     checks and Surviving  Corporation  Common Stock  Certificates in connection
     with the  Merger;  provided,  however,  that in the event of a transfer  of
     ownership  of LabOne  Common Stock that is not  registered  in the transfer
     records of LabOne,  the person  requesting  that a check be made payable to
     the order of, and (if applicable) that a Surviving Corporation Common Stock
     Certificate  be issued to, a person other than the person in whose name the
     LabOne Common Stock Certificate(s)  surrendered is registered shall pay the
     amount of any  transfer or other taxes  required by reason of such  payment
     and (if applicable)  issuance to a person other than the registered  holder
     of such LabOne Common Stock Certificate or establish to the satisfaction of
     Surviving Corporation that such tax has been paid or is not applicable.

11.  Backup  Federal  Income Tax  Withholding  and  Substitute  Form W-9.  Under
     the"backup   withholding"   provisions  of  Federal  income  tax  law,  the
     Disbursing  Agent may be required to withhold  31% of the sum of the amount
     of cash,  if any,  that  otherwise  would be delivered to holders of LabOne
     Common Stock  Certificates  surrendered with this Letter of Transmittal and
     Form of  Election.  To  prevent  backup  withholding,  each  holder  should
     complete  and sign the  Substitute  Form W-9  included  in this  Letter  of
     Transmittal  and Form of  Election  and  either:  (a)  provide  the correct
     taxpayer  identification  number  ("TIN") and certify,  under  penalties of
     perjury,  that the TIN provided is correct (or that such holder is awaiting
     a TIN),  and that (i) the  holder  has not been  notified  by the  Internal
     Revenue Service ("IRS") that the holder is subject to backup withholding as
     a result of failure to report all  interest or  dividends,  or (ii) the IRS
     has  notified  the holder  that the  holder is no longer  subject to backup
     withholding;  or (b) provide an adequate basis for exemption. If the box in
     Part 2 of the substitute  Form W-9 is checked,  the  Disbursing  Agent will
     retain 31% of the sum of the amount of cash, if any, that  otherwise  would
     be delivered  to a holder  during the sixty (60) day period  following  the
     date of the  Substitute  Form W-9. If the holder  furnishes the  Disbursing
     Agent  with such  holder's  TIN  within  sixty (60) days of the date of the
     Substitute Form W-9, the Disbursing  Agent will remit such amounts retained
     during the sixty (60) day period to the holder and no further  amounts will
     be retained or withheld from payments  made to the holder  thereafter.  If,
     however,  the  holder  has not  provided  the  Disbursing  Agent  with such
     Holder's TIN within such sixty (60) day period,  the Disbursing  Agent will
     remit such previously retained amounts to the IRS as backup withholding and
     will withhold 31% of the sum of the amount of cash, if any, that  otherwise

                                       14

     would be delivered to the holder  thereafter  until the holder  furnishes a
     TIN to the Disbursing Agent. In general, if a holder is an individual,  the
     TIN is the Social  Security  Number of such  individual.  If the Disbursing
     Agent is not  provided  with  the  correct  TIN or an  adequate  basis  for
     exemption,  the holder may be subject to a $50  penalty  imposed by the IRS
     and backup withholding at a rate of 31%. Certain holders (including,  among
     others,  all corporations and certain foreign  individuals) are not subject
     to the backup withholding and reporting  requirements.  In order to satisfy
     the  Disbursing  Agent  that a foreign  individual  qualifies  as an exempt
     recipient,  such holder must submit a statement (generally,  IRS Form W-8),
     signed under penalties of perjury,  attesting to that  individual's  exempt
     status.  A form for such  statements  can be obtained  from the  Disbursing
     Agent.  For  further   information   concerning   backup   withholding  and
     instructions  for  completing  the  Substitute  Form W-9  (including how to
     obtain a TIN if you do not have one and how to complete the Substitute Form
     W-9 if LabOne  Common  Stock is held in more than one name or is not in the
<PAGE>

     name  of  the  actual   owner),   consult  the  enclosed   Guidelines   for
     Certification of Taxpayer Identification Number on Substitute Form W-9.

     Failure to complete  the  Substitute  Form W-9 will not,  by itself,  cause
     LabOne Common Stock to be deemed  invalidly  tendered,  but may require the
     Disbursing  Agent to withhold 31% of the sum of the amount of cash, if any,
     that would otherwise be delivered to the holder.  Backup withholding is not
     an additional  Federal income tax. Rather, the Federal income tax liability
     of a person subject to backup  withholding will be reduced by the amount of
     tax withheld.  If withholding  results in an overpayment of taxes, a refund
     may be obtained by the LabOne stockholder upon the filing of a U.S. Federal
     income tax return.

12.  Additional Copies. Additional copies of this Letter of Transmittal and Form
     of  Election  may  be  obtained  from  the  Disbursing   Agent  by  calling
     1-800-___-____.

                                       15

<PAGE>
             GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                          NUMBER ON SUBSTITUTE FORM W-9

How to Get a TIN

If you don't have a  taxpayer  identification  number (a  "TIN"),  apply for one
immediately.  To apply, get Form SS-5,  Application for a Social Security Number
Card  (for  individuals),   from  your  local  office  of  the  Social  Security
Administration,  or Form SS-4,  Application for Employer  Identification  Number
(for  businesses and all other  entities),  from your local IRS office.  In some
cases,  individuals  who become U.S.  resident  aliens for tax  purposes are not
eligible to obtain a Social  Security  Number ("SSN").  These  individuals  must
apply for an individual  taxpayer  identification  number  ("ITIN") on Form W-7,
Application for IRS Individual Taxpayer  Identification Number, unless they have
an application pending for a SSN.

If you do not have a TIN, check the box in Part II of the  Substitute  Form W-9,
sign and date the form, and give it to the requester.  Generally,  you will then
have 60 days to get a TIN and give it to the  requester.  If the requester  does
not receive your TIN within 60 days,  backup  withholding,  if applicable,  will
begin and continue until you furnish your TIN.

Note:    Checking the box in Part II of the Substitute
Form W-9 means that you have already applied for a
TIN or that you intend to apply for one soon.

As soon as you receive your TIN, complete a Form W-9, include your TIN, sign and
date the form, and give it to the requester.

Specific Instructions

Name. If you are an individual,  you must generally enter the name shown on your
social security card. However, if you have changed your last name, for instance,
due to marriage,  without  informing the Social Security  Administration  of the
name change,  please  enter your first name,  the last name shown on your social
security card, and your new last name.

Sole  Proprietor.  You must enter your individual name (enter either your SSN or
your employer  identification number ("EIN") in Part 1). You may also enter your
business name or "doing business as" name on the business name line.  Enter your
name as shown on your social  security  card and business name as it was used to
apply for your EIN on Form SS-4.

Part I - TIN

You must enter your TIN in the  appropriate  box. If you are a sole  proprietor,
you may enter  either your SSN or your EIN. If you are a resident  alien and you
do not have and are not eligible to get a SSN,  your TIN is your ITIN.  Enter it
in the social  security box number.  Also see the chart on the attached page for
further  clarification of TIN and name  combinations.  If you do not have a TIN,
follow the instructions under "How to Get a TIN" above.

Part II - For Payees Exempt from Backup
Withholding




<PAGE>
Individuals (including sole proprietors) are not exempt from backup withholding.
Corporations are exempt from backup withholding for certain payments. If you are
exempt from backup  withholding,  you should still  complete  this form to avoid
possible erroneous backup withholding. Enter your correct TIN in Part 1 and sign
and date the form.

If you are a  nonresident  alien or a  foreign  entity  not  subject  to  backup
withholding,  give the requester a completed  Form W-8,  Certificate  of Foreign
Status.

Payees exempt from backup  withholding  on payments made in connection  with the
Exchange Offer include:

(i)      a corporation;

(ii) an  organization  exempt  from tax under  Section  501(a)  of the  Internal
Revenue  Code of 1986,  as amended (the  "Code"),  or an  individual  retirement
account, or a custodial account under Section 403(b)(7) of the Code;

(iii)    the United States or any of its agencies or
instrumentalities;

(iv) a state,  the District of Columbia,  a possession of the United States,  or
any of their political subdivisions or instrumentalities;

                                        16


(v)      a foreign government or any of its political
subdivisions, agencies or instrumentalities;

(vi)     an international organization or any of its
agencies or instrumentalities;

(vii)    a foreign central bank of issue;

(viii) a dealer in securities or commodities  required to register in the United
States or a possession of the United States;

(ix) a futures commission merchant registered with the Commodity Futures Trading
Commission;

(x)      a real estate investment trust;

(xi) an entity  registered at all times during the tax year under the Investment
Company Act of 1940;

(xii) a common trust fund operated by a bank under Section 584(a) of the Code;

(xiii)   a financial institution; or

(xiv) a  person  registered  under  the  Investment  Advisors  Act of  1940  who
regularly acts as a broker,

Privacy Act Notice - Section 6109 of the Code  requires you to give your correct
TIN to persons who must  report  certain  payments to the IRS.  The IRS uses the
numbers for  identification  purposes.  You must provide your TIN whether or not
you are  required to file tax  returns.  Payers must  generally  withhold 31% of
taxable interest,  dividend,  and certain other payments to a payee who does not
<PAGE>

furnish a taxpayer identification number to a payer.
Certain penalties may also apply.

Penalties

(1) Penalty for Failure to Furnish Taxpayer  Identification  Number. If you fail
to furnish your TIN to a requester, you are subject to a penalty of $50 for each
such failure  unless your failure is due to reasonable  cause and not to willful
neglect.

(2) Civil Penalty for False Information With Respect to Withholding. If you make
a  false  statement  with  no  reasonable  basis  which  results  in  no  backup
withholding, you are subject to a penalty of $500.

(3)      Criminal Penalty for Falsifying
Information.  Willfully falsifying certifications or
affirmations may subject you to criminal penalties
including fines and/or imprisonment.

FOR ADDITIONAL INFORMATION CONTACT
YOUR TAX CONSULTANT




















                                        17

<PAGE>



             GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                          NUMBER ON SUBSTITUTE FORM W-9
<TABLE>
<CAPTION>
     Guidelines for  Determining  the Proper  Identification  Number to Give the
Payer.  Social Security numbers have nine digits separated by two hyphens:  i.e.
000-00-0000.  Employer identification numbers have nine digits separated by only
one hyphen: i.e.  00-0000000.  The table below will help determine the number to
give the requester.



<S>                             <C>                           <C>                        <C>              
                                    Give the                                                Give the EMPLOYER
For this type of account:           SOCIAL SECURITY              For this type of account:  IDENTIFICATION
                                    number of ---                                           number of ---


1.  An individual's account         The individual

2.   Two or more  individuals       The actual owner of the      6. A valid trust,  estate, Legal entity (Do not furnish the
     (joint account)or              account or, if combined         pension trust           identifying number of the
                                    funds, the first individual                             personal representative or
                                    on the account1                                         trustee unless the legal entity
                                                                                            itself is not designated in the
                                                                                            account title.)4
3.  Custodian account of a          The minor2
     minor (Uniform Gift to
     Minors Act)

4. a. The usual revocable           The grantor-trustee1         7. Corporate account       The corporation
        saving trust account
        (grantor is also
          trustee)
    b. So-called trust account      The actual owner1            8. Association, club,      The organization
        is not a legal or valid                                     religious, charitable,
        trust under State law                                       educational or other 
                                                                    tax-exempt organization
5.  Sole proprietorship             The owner3
     account
                                                                 9. Partnership             The partnership

                                                                 10. A broker or registered The broker or nominee
                                                                     nominee

                                                                 11. Account with the       The  public entity
                                                                     Department of 
                                                                     Agriculture in the name
                                                                     of a public entity (such
                                                                     as a State or local
                                                                     government, school
                                                                     district, or  prison) that
                                                                     receives agricultural
                                                                     program payments
</TABLE>
                                        18
<PAGE>
1    List first and circle the name of the person whose  number you furnish.  If
     only one person on a joint account has a SSN, that person's  number must be
     furnished.

2    Circle the minor's name and furnish the minor's social security  number. 

3    You must show your individual name, but you may also enter your business or
     "doing business as" name. You may use either your social security number or
     your employer  identification  number. 

4    List first and circle the name of the legal trust, estate or pension trust.
     Note:  If no name is circled  when there is more than one name,  the number
     will be considered to be that of the first name listed.





                                        19





<PAGE>
                                                                 Exhibit 99.5
SALOMON SMITH BARNEY
- --------------------------
           A member of citigroup[logo]
                                                            


The Board of Directors
Lab Holdings, Inc.
5000 West 95th Street
Shawnee Mission, Kansas  66207

Members of the Board:

We hereby consent to the inclusion of our opinion letter, dated March 7, 1999 as
Appendix B to, and to the  reference  thereto  under the caption  "THE  PROPOSED
MERGER  --  Opinion  of  Holdings'   Financial  Advisor"  in,  the  Joint  Proxy
Statement/Prospectus  of  Lab  Holdings,  Inc.  ("Holdings")  and  LabOne,  Inc.
("LabOne")  relating to the proposed merger  transaction  involving Holdings and
LabOne,  which  Joint  Proxy  Statement/Prospectus  is part of the  Registration
Statement  on Form S-4 of  Holdings.  By giving  such  consent we do not thereby
admit  that we are  experts  with  respect  to any  part  of  such  Registration
Statement  within the  meaning of the term  "expert" as used in, or that we come
within the category of persons whose consent is required  under,  the Securities
Act of 1933, as amended,  or the rules and  regulations  of the  Securities  and
Exchange Commission promulgated thereunder.

                                                S/Salomon Smith Barney Inc.

                                            By  _______________________________
                                                SALOMON SMITH BARNEY INC.





New York, New York
April 12, 1999

















SALOMON SMITH BARNEY INC.  Seven World Trade Center, New York, NY 10048
212-783-7000





<PAGE>

                                                                   Exhibit 99.7

                                CONSENT OF U.S. BANCORP PIPER JAFFRAY INC.


We  hereby  consent  to the  inclusion  in  the  Registration  Statement  of Lab
Holdings, Inc. relating to the proposed merger of LabOne, Inc. with and into Lab
Holdings  Inc.,  of our opinion  letter  appearing as Annex C to the Joint Proxy
Statements/ Prospectus which is a part of the Registration Statement, and to the
references of our firm name therein.  In giving such consent,  we do not thereby
admit that we come within the category of person whose consent is required under
Section 7 or Section 11 of the Securities Act of 1933, as amended,  or the rules
and regulations adopted by the Securities and Exchange Commission thereunder nor
do we admit that we are experts  with  respect to any part of such  Registration
Statement within the meaning of the term "experts" as used in the Securities Act
of 1933, as amended, or the rules and regulations of the Securities and Exchange
Commission thereunder.

Very truly yours,


By/s/  US Bancorp Piper Jaffray

         U.S. Bancorp Piper Jaffray Inc.

Minneapolis, Minnesota
April 9, 1999










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