UNILAB CORP /DE/
DEF 14A, 1999-03-24
MEDICAL LABORATORIES
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                                 April 15, 1998



Dear Stockholder:

                  The  directors  and officers of Unilab  Corporation  cordially
invite you to attend the Annual  Meeting of  Stockholders  of the  Company to be
held on May 19, 1998 at 9:00 a.m.,  local time.  The meeting will be held at the
Warner Center Marriott,  21850 Oxnard Street,  Woodland Hills, California 91364.
Notice of the Annual Meeting, the Proxy Statement and a proxy card are enclosed.

                  At  this  year's  meeting  you  will  be  asked  to (i)  elect
directors and (ii) ratify and approve the  appointment of Arthur Andersen LLP as
the Company's independent auditors.

                  You are urged to mark,  sign, date and mail the enclosed Proxy
immediately.  By mailing your Proxy now you will not be precluded from attending
the meeting. Your Proxy is revocable, and in the event you find it convenient to
attend  the  meeting,  you may,  if you wish,  withdraw  your  Proxy and vote in
person.

                  For your information, we have also enclosed a copy of Unilab's
Annual  Report for the fiscal year ended  December 31, 1997.  We look forward to
seeing you at the meeting.

                                Very truly yours,



                                 David C. Weavil
                                 Chairman of the Board,
                                 President and Chief Executive Officer


<PAGE>




                               UNILAB CORPORATION
                               18448 Oxnard Street
                            Tarzana, California 91356
                                 (818) 996-7300


                    NOTICE OF ANNUAL MEETING OF STOCKHOLDERS
                           TO BE HELD ON MAY 19, 1998


                  Notice is hereby given that the Annual Meeting of Stockholders
(the "Meeting") of Unilab Corporation,  a Delaware  corporation (the "Company"),
will be held at the Warner Center Marriott, 21850 Oxnard Street, Woodland Hills,
California  91364 on May 19, 1998 at 9:00 a.m.,  local time,  for the purpose of
considering and voting on the following  matters described in the attached Proxy
Statement:

1.   Election of directors;

2.   Ratification  and approval of Arthur  Andersen LLP as the Company's 
     independent  auditors for the fiscal year ending December 31, 1998; and

3.   Transacting such other business as may properly come before the Meeting or
     any adjournment thereof.

                  Common  stockholders  of record at the  close of  business  on
April 3, 1998 (the "Record  Date") shall be entitled to notice of and to vote at
the Meeting or any adjournment thereof. You are invited to attend the Meeting in
person. Whether or not you intend to attend the Meeting, please mark, sign, date
and return the enclosed  Proxy to make certain that your shares are  represented
at the  Meeting.  Stockholders  who attend  the  Meeting  may vote their  shares
personally, even though they have previously returned Proxies.

                  The  directors  and  officers of the  Company,  who, as of the
Record Date,  beneficially owned in the aggregate approximately 3,775,142 of the
shares of the  Company's  Common  Stock  outstanding  on the Record  Date,  have
indicated that they intend to vote all such shares FOR both of the proposals set
forth above.

                  Your attention is invited to the attached Proxy Statement.

                                            BY ORDER OF THE BOARD OF DIRECTORS:



                                            Mark L. Bibi
                                            Secretary

Dated:  April 15, 1997


<PAGE>


                               UNILAB CORPORATION
                               18448 Oxnard Street
                            Tarzana, California 91356
                                 (818) 996-7300

                                 PROXY STATEMENT

                  This Proxy  Statement  is  furnished  in  connection  with the
solicitation  of  proxies  (the  "Proxies")  by and on  behalf  of the  Board of
Directors  of  Unilab  Corporation,  a  Delaware  corporation  ("Unilab"  or the
"Company"), for its Annual Meeting of Stockholders (the "Meeting") to be held at
9:00 a.m.,  local time,  on May 19, 1998 at the Warner  Center  Marriott,  21850
Oxnard Street, Woodland Hills, California,  91364 or at any adjournment thereof.
The Company  anticipates that this Proxy Statement and the accompanying  form of
Proxy will be first  mailed or given to the  stockholders  of the  Company on or
about April 15, 1998.

                  The cost of  soliciting  Proxies will be borne by the Company.
Officers and regular employees of the Company,  without additional compensation,
may  solicit  Proxies  by  further  mailing,  telephone,   telegraph,  facsimile
transmission  or by personal  conversations.  The Company  will,  upon  request,
reimburse banks, brokerage firms, nominees, fiduciaries and other custodians for
their expenses in forwarding  solicitation  material to the beneficial owners of
the Company's  common stock, par value $.01 per share (the "Unilab Common Stock"
or the "Common Stock"). In addition,  the Company has retained Kissel-Blake Inc.
to  assist  in  soliciting  proxies  and to  provide  proxy  material  to banks,
brokerage firms, nominees,  fiduciaries and other custodians. For such services,
it is  anticipated  that the  Company  will pay to  Kissel-Blake  Inc.  a fee of
approximately $4,000 plus reasonable out-of-pocket expenses.

                  Any Proxy that is  properly  submitted  to the  Company may be
revoked by the person  giving it at any time before it has been  voted.  Proxies
may be revoked by (i)  delivering  to the  Secretary of the Company at or before
the Meeting a written notice of revocation  bearing a later date than the Proxy,
(ii) duly  executing a  subsequent  Proxy  relating to the same shares of Unilab
Common Stock and  delivering it to the Secretary of the Company at or before the
Meeting or (iii) attending the Meeting and voting in person (although attendance
at the Meeting will not in and of itself constitute revocation of a Proxy).

                  The  persons  named in the  Proxies  will vote the  Proxies in
accordance with the instructions  specified  therein.  Unless  instructed to the
contrary in a Proxy that is returned by a stockholder of the Company,  the Proxy
will be voted (i) FOR the persons  named below in the election of the  Company's
Board of Directors and (ii) FOR the ratification and approval of the independent
auditors  selected by the Company.  The persons named in the Proxy will exercise
their  judgment with respect to other matters which may properly come before the
Meeting.  The Company is not currently aware of any other matters to come before
the Meeting.

                  If you  participate in the Unilab  Corporation  Profit Sharing
Plan for Employees (the Company's "401(k) Plan"),  you may vote shares of Common
Stock of the Company credited to your 401(k) account by instructing Northwestern
Trust Company,  the trustee of the 401(k) Plan, pursuant to the instruction card
being mailed with this proxy statement to plan participants. You should complete
and return the 401(k) Plan proxy card to Chase Mellon Shareholder Services,  the
proxy  tabulators,  at the address set forth on the card.  The trustee will vote
your shares in accordance with your duly executed  instructions  received by May
14, 1998. If you do not send  instructions,  the shares credited to your account
will be  voted  by the  trustee  in the  same  proportion  that it  votes  share
equivalents for which it did receive timely instructions.

                  You may also revoke  previously  given voting  instructions by
May 14, 1998 by filing with the trustee either a written notice of revocation or
a properly completed and signed voting instruction card bearing a later date.

                  Holders  of a majority  of the shares of stock of the  Company
entitled to vote, present in person or represented by proxy, constitute a quorum
at the Meeting.  Abstentions are counted as present for purposes of establishing
the quorum necessary for the Meeting to proceed. Likewise, if a broker indicates
on the proxy that it does not have discretionary  authority as to certain shares
to vote on a particular  matter (a "broker  non-vote"),  such broker non-vote is
counted as present for purposes of  establishing  the quorum  necessary  for the
Meeting to proceed.

                  Directors  will be elected by a favorable  vote of a plurality
of the shares of stock present and entitled to vote,  in person or by proxy,  at
the Meeting. Accordingly, abstentions and broker non-votes as to the election of
directors will not affect the election of the candidates receiving the plurality
of votes. All other matters to come before the Meeting require the approval of a
majority of the shares of stock  present and  entitled to vote,  in person or by
proxy, at the Meeting. Accordingly, abstentions from voting will be included for
purposes of determining  whether the requisite  number of affirmative  votes are
received on any such matter  submitted to the  stockholders  for vote and, thus,
will have the same effect as a vote against such  matters.  Broker  non-votes on
all other  matters will not be entitled to vote,  and will have no effect on the
vote, with respect to such matters.

                      SHARES OUTSTANDING AND VOTING RIGHTS

                  Common  stockholders  of record at the  close of  business  on
April 3, 1998 (the "Record Date"), will be entitled to vote at the Meeting.  The
holders of the shares of Unilab Common Stock are entitled to one vote per share.
Such shares may not be voted  cumulatively.  As of the Record  Date,  there were
40,632,898  shares of Unilab Common Stock issued and outstanding and entitled to
vote. Holders of the Company's Non-Voting Convertible Preferred Stock, par value
$.01 per share (the "Convertible Preferred Stock"), will not be entitled to vote
on any matters  presented at the Meeting.  The presence in person or by Proxy of
the holders of at least a majority of the  outstanding  shares of Unilab  Common
Stock is necessary to  constitute a quorum at the  Meeting.  The  directors  and
officers of the Company as a group as of the Record Date (8 persons),  who as of
the Record  Date  beneficially  owned of record in the  aggregate  approximately
3,775,142 of the outstanding  shares of Unilab Common Stock, have indicated that
they intend to vote all such shares FOR both of the proposals set forth herein.


                                   PROPOSAL 1
                              ELECTION OF DIRECTORS

                  Nominees  to  each  of  the  six  positions  on the  Board  of
Directors of the Company are to be elected at the Meeting. If elected, each will
serve for one year or until his  successor is elected and  qualified.  Each such
nominee is a current director.  The Company does not contemplate that any of the
persons  named below will be unable or will  decline to serve;  however,  if any
such  nominee  is  unable  or  declines  to  serve,  the  persons  named  in the
accompanying  Proxy  will  vote  for a  substitute,  or  substitutes,  in  their
discretion.
                  Listed below are the names and ages of the nominees,  the year
in which each first became a director  and their  principal  occupations  for at
least the past five years.

Name and Age                         Principal Occupation

Haywood D. Cochrane, Jr.- 49    Mr.Cochrane has been a director since May 1997.
                                He has served as President  and Chief Executive
                                Officer  of  Meridian  Occupational  Healthcare
                                Associates,  Inc. since  February 1997. He was
                                Executive  Vice  President,  Chief  Financial 
                                Officer and Treasurer of Laboratory Corporation
                                of America  Holdings,  Inc.  ("LabCorp") from
                                April 1995 to November 1996 and a consultant to
                                LabCorp from November 1996 to February 1997. 
                                Mr.Cochrane was President, Chief Executive 
                                Officer and a Director of Allied  Clinical
                                Laboratories,  Inc.("Allied") from its
                                formation in 1989 until its acquisition by
                                National Health  Laboratories,  Inc.  ("NHL")
                                in June 1994. Mr. Cochrane serves as a
                                Director of JDN Realty Corp, Pathology
                                Corporation of America and Meridian
                                Occupational Healthcare Associates, Inc.

Kirby L. Cramer - 61            Mr.  Cramer has been a member of Unilab's
                                Board of Directors  since  March  1990. He is
                                Chairman Emeritus of the Board of Directors of
                                Hazleton Laboratories Corporation (a subsidiary
                                of Corning Incorporated),  a biological
                                research company. He served as Chief Executive
                                Officer of Hazleton Laboratories  Corporation
                                from 1968 through 1987 (when it was sold to
                                Corning  Incorporated) and as Chairman of the
                                Board of Directors of Hazleton  Laboratories 
                                Corporation from 1987 through 1991. Currently,
                                he serves as a director of Immunex Corp.,
                                Commerce  Bancorporation,  Landec Corporation,
                                ATL Ultrasound, Inc., Northwestern Trust
                                Company, and Pharmaceutical Product
                                Development, Inc.

William Gedale - 56             Mr.  Gedale has been a member of Unilab's 
                                Board of Directors  since  September  1997. 
                                Since April 1998 he has been  President of
                                Sheer Asset  Management,  an investment 
                                counseling  firm.  Prior to that he served as
                                President and CEO of Mount Everest  Advisors,
                                LLC, an investment  counseling and  management
                                firm through March 1998. Previously, from 1989
                                to 1994 he served as President and CEO of
                                General American  Investors,  a New York Stock
                                Exchange  closed-end  investment company and as
                                a Managing  Director  of John W.  Bristol  from
                                June 1995 to June 1996.  He currently serves as
                                a director of Bioreliance Corporation,  a
                                biological pre-clinical contract research
                                organization.  He previously  served as a
                                director  of Allied  (until its merger  with
                                NHL) and of U.S.  Home  Health  Care.  He is a
                                director of New York  Hospital  Departmental 
                                Associates  and is a trustee  of the
                                Neuroscience Research Foundation.

Richard A. Michaelson - 46      Mr.  Michaelson has been a member of Unilab's
                                Board of Directors  since September 1997. He
                                has been a Principal of Focused  Healthcare
                                Partners Ltd., a healthcare  investment entity,
                                since January 1998. He served as Senior Vice
                                President of Unilab from  September  1997 to
                                December  1997, Senior Vice President-Finance,
                                Treasurer and Chief Financial Officer of Unilab
                                from February 1994 to September 1997, and Vice 
                                President-Finance,  Treasurer and Chief
                                Financial Officer of Unilab from November 1993
                                to February 1994. Mr.  Michaelson  also served
                                as Vice President of Unilab  beginning in
                                October 1990.  Mr. Michaelson joined  MetPath,
                                Inc.,  the clinical laboratory subsidiary of
                                Corning Incorporated that was a predecessor to
                                Quest Diagnostics Incorporated, in 1980 and
                                served as Vice  President of MetPath from 1983
                                and Treasurer of Corning Lab  Services,  Inc. 
                                from 1990 through, in each case,
                                September 1992.

Gabriel Balthazar Thomas - 56   Mr. Thomas has been a member of Unilab's
                                Board of Directors  since its formation in
                                November 1988.  He was a Director of Unilab's
                                predecessor entity from December 1986 until
                                November  1988. He has been a consultant in
                                international marketing and management since
                                1971 and a consultant to Unilabs Holdings S.A.,
                                a Swiss corporation and clinical laboratory 
                                holding company, from October 1987 to May 1992.
                                Mr. Thomas was  President of Unilab from 1989
                                through  January 1992. He is a director of
                                Decora Industries, Inc.

David C. Weavil - 47            David C. Weavil has been  Chairman,  President
                                and Chief Executive Officer of the Company
                                since January  1997.  He served as  Executive
                                Vice  President of LabCorp from the date of the
                                April 1995 merger of Roche  Biomedical 
                                Laboratories,  Inc. ("RBL") and NHL which 
                                created  LabCorp,  through December  1996.  He
                                was appointed  Chief Operating Officer  of 
                                LabCorp  in  September  1995.  Previously, 
                                Mr. Weavil served as Senior Vice  President
                                and Chief  Operating  Officer of RBL from
                                1989  to  April  1995.   From  1988   through
                                1989,  Mr. Weavil  was  Regional  Senior Vice
                                President-Mid-Atlantic  of RBL.  Prior to that,
                                he served as Senior Vice President  and Chief
                                Financial Officer of RBL from 1982 through 1988.

         Michael B.  Hoffman  served as a director of the Company  from  October
1992 to his  resignation  for personal  reasons on January 22,  1998.  Walker B.
Lewis and Thomas O. Pyle served as directors  during 1997 until they elected not
to run for reelection at the June 17, 1997 Annual Meeting of Stockholders.


                 SECURITY OWNERSHIP OF MANAGEMENT AND DIRECTORS

         The  following  table sets forth  certain  information  known to Unilab
regarding the beneficial  ownership of Unilab Common Stock as of the Record Date
by: (i) each of Unilab's  directors and Named Executive Officers (see "Executive
Compensation" for definition of Named Executive  Officer) and (ii) all directors
and  officers  as a group.  For  purposes  of this  table,  a person or group of
persons  is deemed to have  "beneficial  ownership"  of any shares as of a given
date which such person has the right to acquire  within 60 days after such date.
For purposes of computing  the  percentage  of  outstanding  shares held by each
person or group of persons named below on a given date,  any security which such
person or persons  have the right to  acquire  within 60 days after such date is
deemed to be outstanding, but is not deemed to be outstanding for the purpose of
computing the percentage  ownership of any other person.  Except as noted below,
each person has full voting and investment power over the shares indicated.

<TABLE>
<CAPTION>
                                            Number of Shares of            Percent of
                                            Unilab Common Stock        Unilab Common Stock
Name and Address of Beneficial Owner        Beneficially Owned        Beneficially Owned(1)
<S>                                          <C>                             <C> 
David C. Weavil                               1,413,928(2)                    3.4%
Haywood D. Cochrane, Jr.                         28,052(3)                     *
Kirby L. Cramer                               1,038,409(4)                    2.5%
William Gedale                                   13,721(5)                     *
Richard A. Michaelson                           717,811(6)                    1.7%
Gabriel B. Thomas   83,721(7)                         
All Directors and Officers of
   Unilab as a Group (8 persons)                 3,775,142                    9.2%
<FN>
- ---------------
* less than 1%

(1)   Calculated  pursuant  to  Rule  13d-3  promulgated  under  the  Securities
      Exchange  Act of 1934,  as  amended  (the  "Exchange  Act"),  and based on
      40,632,898  shares of Unilab  Common  Stock  outstanding  as of the Record
      Date.

(2)   Mr.  Weavil is  Chairman,  President  and Chief  Executive  Officer of the
      Company.  Pursuant to the terms of an Employment  Agreement  dated January
      20, 1997  between  David C. Weavil and Unilab,  Mr.  Weavil (a)  purchased
      $500,000 of Common  Stock from the Company at the closing  market price of
      the Common Stock on January 17, 1997  ($0.4375),  with funds borrowed from
      the Company  (half of which have been paid back to the Company,  including
      accrued 6% interest  thereon),  resulting in ownership of 1,142,857 shares
      and (b) received  228,571 shares  ($100,000 of stock issued at the January
      17, 1997 closing price  ($0.4375)) as a partial payment of his 1997 bonus.
      During 1997 Mr. Weavil  donated  7,500 shares to charity.  Pursuant to his
      Employment  Agreement,  Mr. Weavil has also  received  options to purchase
      250,000 shares at the January 17, 1997 closing price of $0.4375 per share,
      50,000  shares of which have  vested and are  included  in this  ownership
      calculation, and options to purchase 250,000 shares at the January 2, 1998
      closing  price  of  $1.75,  none of which  have  vested.  See  "Employment
      Agreements; Other Arrangements -- Weavil Employment Agreement".

(3)   Mr.  Cochrane  is  a  director  of  the  Company.   Includes  a  presently
      exercisable  option to  purchase  5,000  shares at $0.75 per share,  which
      expires in June 2007 and a presently  exercisable option to purchase 5,000
      shares at $1.75 per share,  which expires in January  2008.  Also includes
      953 shares  received in pro rata payment of second  quarter 1997  director
      fees,  4,444 shares  received in payment of third  quarter  1997  director
      fees,  3,077 shares  received in payment of fourth  quarter 1997  director
      fees, 2,857 shares received in payment of first quarter 1998 director fees
      and 3,721 shares received in payment of second quarter 1998 director fees.

(4)   Mr. Cramer is a director of the Company.  Includes a presently exercisable
      option to purchase 10,000 shares at $2.00 per share, which expires in July
      2000, a presently  exercisable  option to purchase 30,000 shares at $6.125
      per share, which expires in March 2003, a presently  exercisable option to
      purchase 10,000 shares at $6.00 per share, which expires in November 2003,
      a  presently  exercisable  option to purchase  20,000  shares at $4.50 per
      share,  which expires in December 2004, a presently  exercisable option to
      purchase 20,000 shares at $2.625 per share, which expires in January 2006,
      a  presently  exercisable  option to purchase  20,000  shares at $0.50 per
      share, which expires in January 2007 and a presently exercisable option to
      purchase 10,000 shares at $1.75 per share,  which expires in January 2008.
      Also  includes  6,667  shares  received in payment of fourth  quarter 1996
      director  fees,  10,000  shares  received in payment of first quarter 1997
      director  fees,  8,000 shares  received in payment of second  quarter 1997
      director  fees,  4,444  shares  received in payment of third  quarter 1997
      director  fees,  3,077 shares  received in payment of fourth  quarter 1997
      director fees, and 3,721 shares received in payment of second quarter 1998
      director  fees. Mr. Cramer  purchased  500,000 shares of Common Stock from
      the  Company on April 4, 1997 at a per share  purchase  price equal to the
      closing  market price on such date of $0.5625.  Such shares were purchased
      pursuant to the Directors Stock Purchase Plan.
      See "Compensation of Directors".

(5)   Mr. Gedale is a director of the Company.  Includes a presently exercisable
      option to purchase  5,000  shares at $1.6875 per share,  which  expires in
      September  2007,  and a presently  exercisable  option to  purchase  5,000
      shares at $1.75 per share,  which expires in January  2008.  Also includes
      3,721 shares received in payment of second quarter 1998 director fees. See
      "Compensation of Directors".

(6)   Mr.  Michaelson is a director of and consultant to the Company.  He served
      as Senior Vice President of the Company until December 31, 1997.  Includes
      a presently  exercisable  option to purchase  50,000  shares at $5.625 per
      share,  which expires in February 2004, a presently  exercisable option to
      purchase 35,000 shares at $4.50 per share,  which expires in January 2005,
      a presently  exercisable  option to purchase 150,000 shares at $5.1875 per
      share,  which  expires  in May 2005,  a  presently  exercisable  option to
      purchase  35,000  shares at $2.1875 per share,  which  expires in February
      2006, a presently  exercisable option to purchase 200,000 shares at $0.625
      per share which expires in April 2007, and a presently  exercisable option
      to  purchase  5,000  shares at $1.75 per share,  which  expires in January
      2008.  Also includes  29,090 shares  received in partial payment of salary
      for the months of August and September 1996. Additionally,  includes 3,721
      shares  received in payment of second  quarter  1998  director  fees.  See
      "Compensation of Directors" and "Employment Agreements; Other Arrangements
      - Michaelson Transition Agreement".

(7)   Mr. Thomas is a director of the Company.  Includes a presently exercisable
      option to  purchase  10,000  shares at $6.00 per share,  which  expires in
      November 2003, a presently exercisable option to purchase 20,000 shares at
      $4.50 per share,  which expires in December 2004, a presently  exercisable
      option to purchase  20,000  shares at $2.625 per share,  which  expires in
      January 2006, a presently  exercisable option to purchase 20,000 shares at
      $0.50 per share, which expires in January 2007 and a presently exercisable
      option to  purchase  10,000  shares at $1.75 per share,  which  expires in
      January  2008.  Also includes  3,721 shares  received in payment of second
      quarter 1998 director fees. See "Compensation of Directors".
</FN>
</TABLE>
<PAGE>

Meetings and Committees of Board of Directors

Meetings of Board of Directors

         The Board of  Directors of Unilab held ten  meetings  during 1997,  and
took one action by unanimous  written consent during the year. During 1997, each
of the incumbent directors attended at least 75% of the total number of meetings
of the Board and Board Committees on which he served.

Audit Committee

         The Audit  Committee of the Board of Directors of Unilab is  authorized
to make  recommendations  to the Board  regarding the appointment of independent
accountants;  to review and approve any major changes in accounting  policy;  to
review the  arrangements  for, scope and results of the  independent  audit;  to
review  and  approve  the  scope  of  non-audit  services  to  be  performed  by
independent  accountants and to consider the possible effect on the independence
of the accountants;  to review the effectiveness of internal auditing procedures
and personnel;  to review  Unilab's  policies and procedures for compliance with
disclosure requirements with respect to conflicts of interest and for prevention
of unethical,  questionable or illegal payments;  and to take such other actions
as the Board shall from time to time so  authorize.  From  January 1, 1997 until
March 7, 1997 the following directors served on Unilab's Audit Committee:  Kirby
L. Cramer,  Thomas O. Pyle and Gabriel B. Thomas (Chairman).  From March 7, 1997
until June 17, 1997, the Audit  Committee was comprised of Walker Lewis,  Thomas
O. Pyle and Gabriel B.  Thomas  (Chairman).  (Mr.  Lewis and Mr. Pyle are former
directors of the Company who elected not to run for  reelection  at the June 17,
1997 Annual  Meeting of  Stockholders.)  From June 17, 1997 until  September 17,
1997,  the Audit  Committee  was  comprised of Haywood  Cochrane and Gabe Thomas
(Chairman).  From  September 17, 1997 until the date hereof,  Messrs.  Cochrane,
Gedale and  Thomas  have  comprised  the Audit  Committee.  Mr.  Thomas  remains
Chairman.  Each member of the Audit Committee is considered to be an independent
director under the rules and regulations of the American Stock  Exchange,  Inc.,
the exchange on which the Company's Common Stock is listed and traded. The Audit
Committee of Unilab held two meetings during the year ended December 31, 1997.

Compensation Committee

         The  Compensation  Committee is  authorized  to  establish  and approve
compensation policies, salary levels and bonus payments; to grant stock options,
stock appreciation rights, phantom stock rights,  incentive compensation and all
other forms of compensation-related  credits,  guarantees and policies except as
may be precluded by  applicable  law and to provide an overview of  compensation
programs.  From  January 1, 1997  until  March 7, 1997 the  following  directors
served on Unilab's Compensation Committee:  Kirby L. Cramer (Chairman),  Michael
B.  Hoffman,  Walker  Lewis,  Thomas O. Pyle and  Gabriel  B.  Thomas.  (Messrs.
Hoffman,  Lewis  and Pyle are no longer  directors.)  From  March 7, 1997  until
January 22, 1998,  the  Compensation  Committee was comprised of Messrs.  Cramer
(Chairman),  Hoffman  and  Thomas.  Since  January 23,  1998,  the  Compensation
Committee  has been  comprised  of Messrs.  Cramer  (Chairman)  and Thomas.  Mr.
Hoffman  is a Senior  Managing  Director  of The  Blackstone  Group,  which  has
periodically provided investment banking services to the Company. In addition, a
subcommittee  of the  Compensation  Committee,  comprised of Messrs.  Cramer and
Thomas,  was formed for purposes of addressing issues required or recommended to
be addressed by independent directors, including administration of the Company's
Executive  Retirement Plan and the Stock Option and Performance  Incentive Plan.
The  Compensation  Committee of Unilab held two  meetings  during the year ended
December 31, 1997.

Nominating Committee

         The  Company  formed a  Nominating  Committee  on March  7,  1997.  The
Nominating  Committee was  authorized  to establish  procedures  for  selecting,
screening and  nominating  candidates for election as directors at the annual or
special meetings of stockholders;  to make  recommendations of director nominees
to fill vacancies on the Board resulting from director resignations; to increase
the number of directors for purposes of recommending  the addition of a director
to the Board; to review the  qualifications of director  nominations made by the
Company's stockholders,  directors,  officers or others; and to adopt procedures
regarding the qualifications  and tenure of directors.  Stockholders who wish to
make nominations of directors shall submit the name and  qualifications  of such
nominee in writing to the attention of the Company's Secretary at the offices of
the Company,  18448 Oxnard Street,  Tarzana,  CA 91356. From March 7, 1997 until
January  22,  1998,  the members of the  Nominating  Committee  were  Michael B.
Hoffman (Chairman),  Kirby L. Cramer and Gabriel Thomas.  After January 23, 1998
the Nominating Committee was comprised of Messrs.  Cramer and Thomas.  Effective
as of March 5, 1998, the Nominating Committee was discontinued,  given the small
size of the Board and the Board's  determination  that all  directors  should be
involved in the process of  nominating,  considering  and appointing or electing
new directors.

Compensation of Directors

         Directors  received an annualized payment of $20,000 for their services
as directors of Unilab during 1997, payable $5,000 per quarter in cash or Unilab
Common Stock, at the election of the individual director.  Directors who did not
serve for the full year or any full  quarter  received  a pro rata share of such
director  compensation.  David C. Weavil, the Company's Chairman,  President and
Chief Executive Officer from and after January 20, 1997, received no payment for
his services as a director of Unilab during 1997,  because he was an employee of
the  Company.  Similarly,  Richard A.  Michaelson  received  no payment  for his
services as a director  from  September  17, 1997  through  December  31,  1997,
because he served as the  Company's  Senior  Vice  President  during  such time.
Directors receive no additional  per-meeting payments or payments for service on
committees  of the Board  (except that each Chairman of a Committee of the Board
receives an additional  annual grant of 10,000 options to purchase Unilab Common
Stock pursuant to the Non-Employee Directors Stock Plan, as described below).

         As noted  above,  during 1997 and  through  the first  quarter of 1998,
directors  were  offered  the  opportunity  to receive all or a portion of their
annual  payment in shares of Unilab  Common Stock  pursuant to the  Non-Employee
Directors Stock Plan.  Messrs.  Cochrane,  Cramer,  Hoffman and Lewis elected to
receive all of their  directors  compensation  in shares of Unilab Common Stock.
Accordingly,  Messrs.  Cramer,  Hoffman and Lewis  received (a) 10,000 shares of
Unilab  Common Stock for the first quarter of 1997  (calculated  by dividing the
$5,000  quarterly  payment by $0.50,  the closing  market price of Unilab Common
Stock on January 2, 1997, the first business day in the quarter),  and (b) 8,000
shares of Unilab  Common  Stock for the second  quarter of 1997  (calculated  by
dividing the $5,000  quarterly  payment by $0.625,  the closing  market price of
Unilab  Common Stock on April 1, 1997,  the first  business day of the quarter).
Mr. Cochrane  received 953 shares as his pro rata payment for the second quarter
of 1997.  Messrs.  Cochrane,  Cramer and Hoffman  received  (a) 4,444  shares of
Unilab  Common Stock for the third quarter of 1997  (calculated  by dividing the
$5,000  quarterly  payment by $1.125,  the closing market price of Unilab Common
Stock on July 1, 1997,  the first  business  day in the  quarter)  and (b) 3,077
shares of Unilab  Common  Stock for the fourth  quarter of 1997  (calculated  by
dividing the $5,000  quarterly  payment by $1.625,  the closing  market price of
Unilab Common Stock on October 1, 1997,  the first business day in the quarter).
Additionally,   Mr.  Pyle  elected  to  receive  two  thirds  of  his  directors
compensation   in  cash  and  one  third  in  shares  of  Unilab  Common  Stock.
Accordingly,  Mr. Pyle received $3,350 in cash and 2,222 shares of Unilab Common
Stock for the fourth quarter of 1996,  $3,350 in cash and 3,333 shares of Unilab
Common  Stock for the first  quarter of 1997 and $3,350 in cash and 2,666 shares
of Unilab Common Stock for the second quarter of 1997. Messrs. Gedale and Thomas
elected  to  receive  all of  their  directors  compensation  in  cash.  Messrs.
Michaelson  and Weavil  received no  directors  fees in 1997  because  they were
full-time employees of the Company.

      Effective as of April 1, 1998, all non-employee directors were required to
receive their director fees in shares of Unilab Common Stock,  calculated on the
same basis as the voluntary receipt of shares has been previously calculated (as
described in the immediately preceding paragraph). Also effective as of April 1,
1998,  the amount of annual  director  fees was  reinstated  at $40,000  (as had
existed  prior  to  the  Board's  voluntary   reduction  to  $20,000  in  1997).
Accordingly,  as a result each non-employee director (Messrs.  Cochrane, Cramer,
Gedale,  Michaelson,  Thomas)  received  3,721 shares of Unilab  Common Stock on
April 1, 1998 in payment of second  quarter 1998  director fees  (calculated  by
dividing the $10,000 quarterly  payment by $2.6875,  the closing market price of
Unilab Common Stock on April 1, 1998, the first business day of the quarter).

      Effective as of January 1, 1996, the Company's  stockholders  approved and
adopted the  Non-Employee  Directors  Stock Plan pursuant to which,  among other
things, (i) non-employee  directors receive annual grants of ten year options to
purchase  10,000 shares of Unilab Common Stock at an exercise price equal to the
closing price per share of Unilab Common Stock on the American Stock Exchange on
the grant date and (ii) directors who serve as Chairman of a Board  Committee or
Committees  receive an  additional  annual grant of ten year options to purchase
10,000 shares of Unilab  Common Stock at an exercise  price equal to the closing
price per share of Unilab  Common  Stock on the American  Stock  Exchange on the
grant date. In addition, a new non-employee  director receives a grant of 10,000
ten year options upon his joining the Board,  at an exercise  price equal to the
closing market price on the date of grant.

      Pursuant to this program, Mr. Cochrane received options to purchase 10,000
shares in June 1997 at an  exercise  price of $0.75 per  share,  and  options to
purchase  10,000 shares in January 1998 at an exercise price of $1.75 per share;
Mr. Cramer (Chairman of the Compensation Committee) received options to purchase
20,000 shares in January 1996 at an exercise price of $2.625 per share,  options
to purchase  20,000  shares in January  1997 at an  exercise  price of $0.50 per
share and options to purchase 20,000 shares in January 1998 at an exercise price
of $1.75 per share;  Mr. Gedale  received  options to purchase  10,000 shares in
September 1997 at an exercise price of $1.6875 per share and options to purchase
10,000  shares in January  1998 at an  exercise  price of $1.75 per  share;  Mr.
Hoffman  received  options  to  purchase  10,000  shares in  January  1996 at an
exercise price of $2.625 per share, options to purchase 10,000 shares in January
1997 at an exercise  price of $0.50 per share and, by virtue of his  position as
Chairman of Nominating  Committee,  options to purchase 20,000 shares in January
1998 at an exercise price of $1.75 per share; Mr. Michaelson received options to
purchase  10,000 shares in January 1998 at an exercise price of $1.75 per share;
and Mr. Thomas  (Chairman of the Audit  Committee)  received options to purchase
20,000 shares in January 1996 at an exercise price of $2.625 per share,  options
to purchase  20,000  shares in January  1997 at an  exercise  price of $0.50 per
share and options to purchase 20,000 shares in January 1998 at an exercise price
of $1.75 per share. All such options vest one-half  immediately and one-half one
year after grant.

      Effective  April 1, 1997,  the Board  approved  and adopted the  Directors
Stock Purchase  Plan,  pursuant to which 1.5 million shares of Common Stock were
reserved for purchase by directors of the Company at then current market prices.
As of the Record Date, one director (Kirby Cramer) had purchased  500,000 shares
of Common Stock on April 4, 1997, at such date's closing market price of $0.5625
per share.  The Board voted to discontinue  such plan at its March 5, 1998 Board
meeting,  effective as of March 31, 1998.  As a result,  the one million  shares
remaining  which  had been  reserved  for  issuance  under the  Directors  Stock
Purchase Plan were returned to treasury.

      Each  director  is  reimbursed  for all  travel  expenses  related to each
meeting of the Board or Committee that he attends in person.

Executive Compensation

         The following  table sets forth the annual and  long-term  compensation
paid or accrued by Unilab for  services  rendered  in all  capacities  to Unilab
during the years ended  December  31, 1997,  1996 and 1995 of those  persons who
were, at December 31, 1997, (i) the Chief  Executive  Officer and (ii) the other
Named  Executive  Officer of Unilab whose total annual  salary and bonus for the
year ended December 31, 1997 exceeded  $100,000  (Messrs.  Weavil and Michaelson
collectively are referred to herein as the "Named Executive Officers").
<TABLE>
                           Summary Compensation Table
<CAPTION>
                                                                                                     Long Term
                                        Annual Compensation                                    Compensation Awards  
                                                                                              Restricted    Securities
Name and                                                                   Other Annual        Stock        Underlying
Principal Position                Year     Salary ($)(3)    Bonus ($)      Compensation ($)    Award ($)    Options(#)
- ------------------                ----    ---------------   ---------      ----------------    ----- ---    ----------
<S>                              <C>       <C>             <C>              <C>               <C>            <C> 
David C. Weavil                   1997      $464,710        $200,000(4)      $139,659(5)          --          250,000
  Chairman of the Board,
  President and Chief Executive
  Officer of Unilab(1)

Richard A. Michaelson             1997      $287,000          $70,313         $22,901             --          275,000
  Senior Vice                     1996      $292,678               --         $53,784(5)          --           35,000
  President-Finance,              1995      $332,778               --             --           $129,875(6)    185,000
  Treasurer and Chief Financial
  Officer of Unilab(2)
<FN>

(1)   Mr. Weavil has served as Chairman,  President and Chief Executive  Officer
      of the Company since January 20, 1997. See "Employment  Agreements;  Other
      Arrangements--"Weavil Employment Agreement".

(2)   Mr.  Michaelson  served as an officer of the Company through  December 31,
      1997 and currently  serves as a director of and consultant to the Company.
      See  "Employment  Agreements;  Other  Arrangements--Michaelson  Employment
      Agreement" and "Michaelson Transition Agreements."

(3)   Includes  amounts  equal to 8% of cash  compensation  paid into a deferred
      compensation account ($40,000 for Mr. Weavil in 1997 and $29,425,  $21,083
      and $21,333 for Mr. Michaelson, for 1997, 1996 and 1995, respectively) and
      amounts  accrued under the Unilab  Corporation  Executive  Retirement Plan
      ($24,560 for Mr. Weavil and $14,075, $9,853 and $44,778 for Mr. Michaelson
      for  1997,  1996  and  1995,  respectively).  Mr.  Michaelson  voluntarily
      accepted $20,000 of his 1996 base salary ($10,000 per month for the months
      of August and  September  1996) in newly  issued  shares of the  Company's
      Common  Stock.  He received  29,090  shares in lieu of the cash payment of
      $20,000. The number of shares received by Mr. Michaelson was calculated on
      the  basis of the  closing  market  price of  Unilab  Common  Stock on the
      payroll date for each month in which Mr. Michaelson received stock in lieu
      of cash.

(4)   Mr.  Weavil  was  paid a  bonus  of  $200,000  in  1997,  pursuant  to his
      employment  agreement  with the Company.  Mr. Weavil  received  payment of
      $100,000 of the bonus in shares of Unilab Common Stock at the start of his
      employment  with the  Company in January  1997.  As a result,  Mr.  Weavil
      received  228,571 shares in payment of the bonus  (calculated on the basis
      of the January 17, 1997  closing  market  price of Unilab  Common Stock of
      $0.4375 per share).  The remaining  $100,000 of the bonus was paid in cash
      in the second half of 1997.

(5)   For Mr. Weavil,  represents  the benefits from a car  allowance,  expenses
      paid by the Company related to Mr. Weavil's relocation to and residence in
      California,  the  benefit  from the  Company  providing  group  term  life
      insurance  and related tax  gross-up  payments on such  amounts  (such tax
      gross-up  payments  being  $60,955).  See  "Employment  Agreements;  Other
      Arrangements  --  Weavil  Employment   Agreement".   For  Mr.  Michaelson,
      represents   the  benefits  from  a  car   allowance,   Company   matching
      contributions to the Company's 401(k)  profit-sharing plan, payment by the
      Company of a loan taken by Mr.  Michaelson  from a bank and  guaranteed by
      the  Company,  tax return  preparation  fees,  and  related  tax  gross-up
      payments or such amounts (such tax gross-up  payment being  $11,108).  See
      "Employment  Agreements;   Other  Arrangements  --  Michaelson  Employment
      Agreement" and "--Michaelson Transition Agreement".

(6)   Represents  the value of 25,000 shares of restricted  stock granted on May
      1, 1995,  based on a closing  market price on that date on  Nasdaq/NNM  of
      $5.1875 per share (the Company's Common Stock traded on Nasdaq/NNM at that
      time). As of December 31, 1997 (the last trading day in 1997), the closing
      market price of  unrestricted  Unilab  Common Stock on the American  Stock
      Exchange  was  $1.875  per  share.  Accordingly,  25,000  shares  of  such
      unrestricted  stock at such  date  would  have had an  aggregate  value of
      $46,875.
</FN>
</TABLE>

Option Grants

            The  following  table sets forth the grants of  non-qualified  stock
options  during  the year  ended  December  31,  1997,  to the  Named  Executive
Officers:
<TABLE>
                        Option Grants In Last Fiscal Year
<CAPTION>

                                        % of Total                         Market
                                         Options         Exercise         Price of
                      Options           Granted to          or             Date of                  Grant Date
                      Granted          Employees in     Base Price          Grant    Expiration    Present Value
Name                    (#)            Fiscal Year        ($/Sh)           ($/Sh)      Date          ($/Sh)
- ----                    ---            -----------        ------          ------       ----          ------
<S>                   <C>                  <C>           <C>             <C>          <C>           <C>
David C. Weavil        250,000(1)           14.3%         $0.4375         $0.4375      1/2007        $0.39(3)

Richard A. Michaelson  275,000(2)           15.7%         $0.625          $0.625       4/2007        $0.57(3)
<FN>

(1)   In January 1997,  pursuant to the Company's  Stock Option and  Performance
      Incentive Plan and the terms of his employment  agreement,  Mr. Weavil was
      granted  options to purchase  250,000  shares of Unilab Common Stock at an
      exercise price of $0.4375 per share, the closing price per share of Unilab
      Common Stock as reported on the American Stock Exchange on the date of the
      grant.  Such options vested one-fifth on January 20, 1998, and are to vest
      one-fifth on January 20, 1999, one-fifth on January 20, 2000, one-fifth on
      January 20, 2001, and one-fifth on January 20, 2002.

(2)   In April 1997,  pursuant to the  Company's  Stock  Option and  Performance
      Incentive  Plan, Mr.  Michaelson was granted  options to purchase  275,000
      shares of Unilab  Common  Stock at an exercise  price of $0.625 per share,
      the  closing  price per share of Unilab  Common  Stock as  reported on the
      American Stock Exchange on the date of the grant.  200,000 of such options
      were to vest  one-half  on April 1,  1998,  and one half on April 1, 1999.
      75,000 of such options were to vest on April 1, 1998. In  connection  with
      the  Michaelson  Transition  Agreements  (see  "Resignation  of Richard A.
      Michaelson as Senior Vice  President,  Treasurer and CFO" and  "Employment
      Agreements; Other  Arrangements--Michaelson  Transition Agreements"),  the
      vesting of all such options was  accelerated  to September  17, 1997.  Mr.
      Michaelson exercised 75,000 of such options in October 1997.


(3)   In  accordance  with  Securities  and  Exchange   Commission   rules,  the
      Black-Scholes  option  pricing  model was used to estimate  the grant date
      present value of the options set forth in this table. The Company's use of
      this model should not be construed  as an  endorsement  of its accuracy in
      valuing options.  All option valuation  models,  including  Black-Scholes,
      require a prediction  about the future  movement of the stock  price.  The
      actual  value,  if any, an executive may realize will depend on the excess
      of the  stock  price  over the  exercise  price on the date the  option is
      exercised. The estimated values under the model are based on the following
      assumptions and variables: (i) the exercise of all options occurs at their
      expiration   dates,  (ii)  the  weighted  one-year  historic  stock  price
      volatility  of the  Common  Stock is  approximately  91.7%  and  (iii) for
      purposes of present value calculations, the ten-year, zero coupon Treasury
      note interest rate at the date of grant (6.9%) was used.
</FN>
</TABLE>

Other Stock Options

            Unilab has from time to time granted  non-qualified  stock  options,
some of which  were  granted  not  pursuant  to any  formal  plan  other than an
individual  stock  option  agreement  and some of which  were  issued  under the
Company's  Stock  Option  and  Performance  Incentive  Plan,  to  its  officers,
employees, consultants and directors. As of the Record Date, non-qualified stock
options to purchase a total of 5,030,334  shares of Unilab Common Stock (some of
which have not yet vested) were outstanding.

            Effective as of January 1, 1996, the Company's stockholders approved
and adopted a Stock Option and  Performance  Incentive  Plan,  pursuant to which
certain of the  Company's  employees  may receive  grants of options to purchase
shares of Unilab  Common  Stock,  and may receive  other grants of Unilab Common
Stock in various forms (Restricted Stock, SARs, etc.). Options granted under the
Stock  Option and  Performance  Incentive  Plan have a ten year term and vest in
equal  installments  over a  vesting  period  determined  by the  Administrative
Committee of the Stock Option and Performance Incentive Plan, which is typically
one to five years.  The exercise  price is the per share price of Unilab  Common
Stock on the American  Stock Exchange (or for grants made prior to the Company's
listing on the American  Stock  Exchange on June 24, 1996, on Nasdaq/NNM) at the
close of business on the grant date.  Pursuant to this Plan, options to purchase
a total of 1,751,000  shares of Unilab  Common Stock were issued to employees of
the Company during 1997.

            Effective as of January 1, 1996, the Company's stockholders approved
and adopted a Non-Employee  Directors  Stock Plan,  pursuant to which certain of
the Company's  directors  receive annual grants,  typically on the first trading
day of each year, of options to purchase  shares of Unilab  Common  Stock.  Such
stock  options have a ten year term and vest 50% on the date of grant and 50% on
the first  anniversary of the date of grant. The exercise price is the per share
price of Unilab Common Stock on the American Stock Exchange (or for grants prior
to the June 24, 1996 listing date on the American Stock Exchange, on Nasdaq/NNM)
at the close of business on the grant date. Pursuant to this program, options to
purchase  a total of  70,000  shares  of  Unilab  Common  Stock  were  issued to
non-employee  directors  of the Company in January  1997 and options to purchase
80,000 shares were issued to non-employee directors in January 1998.

Restricted Stock

            Unilab  has,  from  time to time,  granted  restricted  stock to its
employees. Such shares typically contain restrictions on transfer of the granted
shares of Unilab Common Stock for a two to five year period,  with forfeiture of
such shares upon earlier separation from the Company, in the Board's discretion.
As of the Record Date,  759,499  shares of  restricted  Unilab Common Stock were
outstanding,  including (a) 5,999 restricted  shares issued to Thomas O. Pyle, a
former  director,   in  partial   consideration  for  his  quarterly   directors
compensation in January and April 1997, (b) 500,000  restricted shares issued to
Andrew  Baker,  the Company's  former  Chairman,  President and Chief  Executive
Officer,  in January  1997 as part of the Baker  Transition  Agreements  and (c)
25,000  shares  issued to  Richard  A.  Michaelson,  one of the Named  Executive
Officers, in May 1995.

Option Exercises and Fiscal Year-End Values

            The following  table reflects the options to purchase  Unilab Common
Stock that were exercised by the Named Executive Officers during the fiscal year
ended  December  31,  1997 and lists  the  number  and value of the  unexercised
options to purchase Unilab Common Stock held by the Named Executive  Officers at
December 31, 1997.

<TABLE>
    Aggregated Option Exercises In Last Fiscal Year and FY-End Option Values
<CAPTION>

                                                                         Number of
                                                                         Securities
                                                                         Underlying            Value of
                                                                         Unexercised          Unexercised
                                                                         Options at           In-the-Money
                                                                         FY-End (#)            Options at
                                                                                               FY-End ($)
                            Shares Acquired                              Exercisable/         Exercisable/
Name                        on Exercise (#)      Value Realized ($)      Unexercisable       Unexercisable
- --------------------------------------------------------------------------------------------------------------
<S>                             <C>                  <C>                 <C>                 <C>
David C. Weavil(1)                 --                   --                0/250,000(1)        $0/359,375
Richard A. Michaelson(2)         75,000               112,500             470,000/0(2)        $250,000/0
<FN>

 (1)  Pursuant to Mr. Weavil's employment  agreement he received in January 1997
      options to purchase  250,000  shares of Common Stock,  which vest in equal
      installments  over five years,  beginning  January 1998 and ending January
      2002.  He  also  received  in  January  1998  pursuant  to his  employment
      agreement  additional  options to purchase 250,000 shares of Unilab Common
      Stock at an  exercise  price equal to the $1.75 per share  closing  market
      price of Unilab  Common  Stock on the date of grant,  which  vest in equal
      installments  over five years,  beginning  January 1999 and ending January
      2003.

(2)   On September 17, 1997, in connection with Mr. Michaelson's  resignation an
      officer of the  Company,  the  vesting of all of the  695,000  outstanding
      options  to  purchase  Unilab  Common  Stock  beneficially  owned  by  Mr.
      Michaelson  were  accelerated  and all  such  options  became  immediately
      exercisable as of such date.  150,000 of such options expired  unexercised
      on October 20, 1997. Mr. Michaelson exercised 75,000 of such options in
      October 1997.
</FN>
</TABLE>

Executive Retirement Plan

      Effective as of January 1, 1995, the Company's  stockholders  approved the
adoption of the Executive  Retirement  Plan (the "SERP").  The SERP provides for
issuance to certain selected officers and other senior executives of the Company
("Executives")  of up to  1,000,000  shares in the  aggregate  of Unilab  Common
Stock.  Shares of Unilab Common Stock to be issued in  connection  with the SERP
will be made available from treasury or authorized and unissued shares of Unilab
Common Stock. An Executive  participating  in the SERP is entitled to receive an
annual allocation of Awards.  An Award is a unit of measurement  equivalent to a
share of Unilab Common Stock. The number of Awards allocated each year will have
a fair  market  value  equal to the annual  expense of a  projected  single life
annuity  commencing at age 65, providing an Executive with a benefit equal to 2%
of the  Executive's  "Final  Compensation"  multiplied by the number of years of
service (not to exceed 25) (the "Target  Benefit").  For purposes of determining
the annual expense under the SERP, an Executive's  "Final  Compensation"  equals
the  projected  average  compensation  of the  Executive  for the 5  consecutive
calendar  years  preceding and including the  Executive's  attainment of age 65.
Initially,   based  on  recommendations  from  the  actuary  for  the  SERP,  an
Executive's compensation will be projected to increase at the rate of 5 1/2% per
year.

      As soon as practicable following the death, disability or retirement of an
Executive  after  attaining age 65 (the "Payment  Date"),  the Executive (or his
Beneficiary,  as the case may be) will be issued a certificate  or  certificates
for a number of shares of Common  Stock equal to the vested  number of Awards in
the Account of the Executive.  In addition,  an Executive shall be entitled to a
distribution  of his Account upon his  termination of employment for Good Reason
or without  Cause (as defined in the SERP),  in each case only after a Change in
Control.  Any  other  amounts  in  an  Account,  other  than  Awards,  shall  be
distributed in a single cash lump sum payment.

      During 1997, seven of the Company's  executives  participated in the SERP.
David C. Weavil, the Company's  Chairman,  President and Chief Executive Officer
during  1997,  received  a  1997  contribution  to the  SERP  from  the  Company
equivalent  to  $24,560.   Richard  A.   Michaelson,   the  former  Senior  Vice
President-Finance,  Treasurer  and  Chief  Financial  Officer,  received  a 1997
contribution to the SERP from the Company equivalent to $14,075.  The other five
participants  in the SERP  received  aggregate  1997  contributions  to the SERP
equivalent to $48,865.  The amount of such Awards was  calculated on the date of
issuance of the Awards,  utilizing  the common stock price  valuation as of such
date.  Since the price of Unilab  Common  Stock  increased  between  the date of
issuance and December 31, 1997, the value of the Awards also increased. In light
of the increase  during 1997 of the  Company's  Common  Stock  price,  the Board
limited the maximum number of Awards to be granted for 1997 to all  participants
in the SERP to 200,000 Awards in the aggregate.

Resignation of Andrew H. Baker as Chairman, President
and Chief Executive Officer

        Andrew H. Baker,  who had served as Chairman,  President and Chief
Executive  Officer of the Company since April
1992,  resigned  from those  positions  effective  as of January  20,  1997.  In
connection  with  his  resignation  and  in  consideration   for  the  Company's
obligations to Mr. Baker under his employment agreement and his participation in
the Company's benefit plans,  including the Executive Retirement Plan, Mr. Baker
and/or a  company  wholly  owned by him  received  the  following:  (i)  500,000
restricted shares of Common Stock (the "Transition  Shares"),  such restrictions
initially  to lapse upon the earliest to occur of (1) a Change of Control of the
Company,  (2) Baker's  attainment of age 65 and (3) Baker's death or disability;
(ii) the  expiration  dates of the options to purchase  540,000 shares of Unilab
Common Stock  previously  granted to Baker were extended to January 20, 2007 and
all such options became immediately vested; (iii) a Consulting Agreement between
the Company and a company wholly owned by Baker, to provide consulting  services
to the Company, for an aggregate payment of $900,000, $600,000 of which was paid
in January  1997 and the  remaining  $300,000 of which is payable  $100,000  per
year,  quarterly in arrears,  for the  three-year  period  ending on January 20,
2000,  (iv) office space in New Jersey through  October 1998 and secretarial and
administrative  services  through January 2000; (v) continued  benefit  coverage
(medical, hospitalization, dental, life, disability, accidental death and travel
accident) for three years;  (vi)  reimbursement of reasonable  business expenses
during the  consulting  period,  as approved  by the  Company's  CEO;  and (vii)
continued use of his company auto for three years,  to be  transferred to him at
the end of that time.  In  addition,  Mr.  Baker  agreed to sell his  California
residence at the Company's  direction and the Company agreed to pay the costs of
such house (e.g. mortgage,  interest, taxes) except for costs of maintaining the
house, which Mr. Baker was responsible for paying. Five hundred thousand dollars
of the proceeds from the sale of that house will be used to pay the  outstanding
indebtedness  on the house held by a commercial  bank,  with the excess proceeds
over $500,000 being retained by Mr. Baker. The $500,000 owed by Mr. Baker to the
Company (remaining from the original  $1,000,000 loan extended by the Company to
Mr. Baker in 1994 to assist Mr. Baker in purchasing  the  California  residence)
would be forgiven. Mr. Baker was unable to sell his California residence and, as
a result,  effective as of April 1, 1998, Mr. Baker assumed  responsibility  for
all payments  associated  with that house,  including the costs formerly paid by
the  Company.  Mr.  Baker agreed not to compete with the Company in the clinical
laboratory business in the State of California for three years.

                 The foregoing  agreements between the Company and Mr. Baker are
referred to as the "Baker Transition Agreements".

                 Effective April 15, 1997, the Company paid the principal amount
of $300,000 to a  commercial  bank in payment of a loan Mr. Baker had taken from
the bank in April  1994 in order to pay  taxes  on  "paper  profits"  Mr.  Baker
realized as a result of the Company's November 1993  reorganization  transaction
with Corning.  The Company had executed a guarantee of this loan at the time Mr.
Baker received the loan. In consideration  for the Company's payment of the loan
under its  guarantee,  Mr. Baker (i) executed a $300,000,  6% five-year  secured
promissory note (the "Baker Note") in favor of the Company and (ii) was required
to  purchase  $300,000  of newly  issued  shares of Unilab  Common  Stock at the
closing market price on a date or dates selected by Mr. Baker prior to September
1, 1997 (the "New Shares"). Mr. Baker acquired such shares on April 3, 1997 at a
per share  purchase  price of  $0.5625,  resulting  in the  purchase  of 533,333
shares.  The Baker Note is secured by the  Transition  Shares as well as the New
Shares. All restrictions on the Transition Shares and New Shares will lapse upon
Mr.  Baker's  payment in full of the  principal  of and accrued  interest on the
Baker  Note.   The  Baker  Note  may  be  prepaid  at  any  time.  See  "Certain
Relationships   and   Transactions   with  Related  Persons   -Indebtedness   of
Management".

Hiring of David C. Weavil as Chairman, President and Chief Executive Officer

                 Concurrently  with the  resignation  of Mr.  Baker as Chairman,
President and Chief Executive  Officer of the Company,  the Board hired David C.
Weavil to fill those positions.  The Board selected Mr. Weavil after considering
multiple  potential  candidates.  Effective as of January 20, 1997,  Mr.  Weavil
entered into an employment agreement with the Company,  which is described below
under   "Employment   Agreements;   Other   Arrangements  --  Weavil  Employment
Agreement".

Resignation of Richard A. Michaelson as Senior Vice President-Finance,
Treasurer and Chief Financial Officer

                  Richard  A.   Michaelson,   who  had  served  as  Senior  Vice
President-Finance,  Treasurer and Chief  Financial  Officer of the Company since
April 1992, resigned from those positions effective as of September 17, 1997 and
resigned as an officer of the Company  (Senior Vice  President)  effective as of
December 31, 1997. Mr.  Michaelson became a director of the Company on September
17,  1997 and a  consultant  to the Company on January 1, 1998.  Mr.  Michaelson
resigned from his employment  with the Company to return home to the East Coast.
In  connection  with his  resignation  and in  consideration  for the  Company's
obligations  to  Mr.   Michaelson   under  his  employment   agreement  and  his
participation  in the  Company's  benefit  plans,  Mr.  Michaelson  received the
following:  (i) the  restrictions  on 25,000  restricted  shares of Common Stock
previously  granted to Mr. Michaelson were deemed to have lapsed as of September
17, 1997, (ii) the expiration dates of the options to purchase 695,000 shares of
Unilab Common Stock previously  granted to Mr. Michaelson were maintained at the
dates that are ten years  following the grant date of each such option,  instead
of the  expiration of the option 365 days  following  termination of employment,
(iii)  execution  of a  Consulting  Agreement  effective  as of January 1, 1998,
between the Company and Mr. Michaelson,  to provide  consulting  services to the
Company  for a base  payment of $5,000  per month for an initial  one year term,
with automatic  one-year  renewals unless earlier  terminated in accordance with
the terms of the Consulting  Agreement,  (iv) office space in New Jersey through
October 1998 and secretarial and administrative  services through such date, (v)
continued benefits coverage (medical, hospitalization, dental, life, disability,
accidental death and travel accident) for eighteen months, (vi) reimbursement of
normal and  approved  business  expenses  during the  consulting  period,  (vii)
reimbursement  of up to  $2,500  of  expenses  associated  with  moving  certain
personal possessions back to the East Coast; and (viii) title of the Company car
driven  by  Mr.  Michaelson  on the  East  Coast  would  be  transferred  to Mr.
Michaelson or, at the Company's  option,  Mr.  Michaelson would be provided with
continued use of the car pending delivery of the title to Mr. Michaelson,  which
the Company would have up to 18 months to complete. In addition,  Mr. Michaelson
received  in  January  1998 a payout  of the  amounts  accrued  in his  deferred
compensation  account  ($110,115)  and  all  amounts  accrued  in his  Executive
Retirement  Plan account  (66,647 Awards) were deemed fully vested as of January
1, 1998.  Based on the December 31, 1997 closing  market price of Unilab  Common
Stock of $1.875 per share, the value of Mr. Michaelson's Awards at such date was
$124,963.

                  The   foregoing   agreements   between  the  Company  and  Mr.
Michaelson are referred to as the "Michaelson Transition Agreements".

                  Effective  April 15,  1997,  the  Company  paid the  principal
amount of $150,000 to a commercial bank in payment of a loan Mr.  Michaelson had
taken  from  the bank in April  1994 in  order  to pay the  exercise  price of a
warrant to purchase 35,000 shares of Unilab Common Stock (the "Warrant  Shares")
as well as tax  payments  related to such  exercise.  The Company had executed a
guarantee  of this  loan at the  time  Mr.  Michaelson  received  the  loan.  In
consideration  for the Company's  payment of the loan under its  guarantee,  Mr.
Michaelson (i) executed a $150,000,  6% five-year  secured  promissory note (the
"Michaelson  Note") in favor of the Company.  The Michaelson Note was secured by
the Warrant Shares. In connection with the Michaelson Transition Agreements, the
Michaelson  Note was  converted to a  non-interest  bearing  note.  See "Certain
Relationships and Transactions with Related Persons Indebtedness of Management".

Employment Agreements; Other Arrangements

                 Weavil  Employment  Agreement.  On January 20, 1997, Unilab and
David C. Weavil  entered into an employment  agreement  (the "Weavil  Employment
Agreement") pursuant to which he serves as Chairman of the Board,  President and
Chief Executive Officer of Unilab.  The term of the Weavil Employment  Agreement
initially  ended on January 19, 1998, and  automatically  renewed for successive
one-year  periods  unless one party thereto gives at least a six month notice of
termination  before the end of the current term (the "Employment  Period").  Mr.
Weavil receives an annual base salary of $400,000,  subject to upward adjustment
at the Board of Directors' discretion. Mr. Weavil received upon execution of the
Weavil  Employment  Agreement a bonus of  $100,000,  which was paid in shares of
Unilab  Common Stock.  In payment of this bonus,  Mr.  Weavil  received  228,571
shares of Unilab Common Stock,  calculated by dividing $100,000 by $0.4375,  the
closing  market  price of Unilab  Common  Stock on January  17,  1997,  the last
trading day prior to Mr.  Weavil's  commencement  of employment.  Mr. Weavil was
also  eligible to receive,  and did receive,  an  additional  1997 cash bonus of
$100,000 when Unilab met certain performance  objectives  pre-established by the
Board of Directors of Unilab. The Weavil Employment Agreement also provides that
Unilab  will  establish  for Mr.  Weavil a deferred  compensation  account to be
credited  annually with an additional  amount equal to 8% of Mr.  Weavil's total
cash  compensation  (inclusive of all bonuses) for that year.  Mr. Weavil earned
$40,000 in deferred  compensation  during 1997. The Weavil Employment  Agreement
also  provides  for  Mr.  Weavil's  participation  in  the  Company's  Executive
Retirement Plan.

                 Pursuant to the terms of the Weavil Employment  Agreement,  Mr.
Weavil  purchased  from the Company on January 20, 1997 $500,000  worth of newly
issued  shares of Unilab  Common  Stock based on the  January  17, 1997  closing
market price of $0.4375.  Accordingly,  Mr. Weavil purchased 1,142,857 shares of
Unilab  Common Stock at that time.  Mr. Weavil was granted  demand  registration
rights with respect to such shares, as well as the 228,571 shares he received in
payment of his $100,000  bonus noted in the  preceding  paragraph.  The $500,000
utilized by Mr.  Weavil to purchase  such shares was borrowed  from the Company.
The repayment of $250,000 of such borrowed funds was due 180 days after the date
of loan (i.e.,  by July 20,  1997),  was unsecured and bore interest at 6%. That
note was repaid in full by Mr.  Weavil on July 20, 1997.  Repayment of the other
$250,000 of such funds is due five years  after  issuance  (i.e.  by January 20,
2002),  is secured  by the  shares of Unilab  Common  Stock  purchased  from the
proceeds thereof and bears interest at 6%.

                 Also pursuant to the Weavil  Employment  Agreement,  on January
20, 1997,  Mr. Weavil was granted  options to purchase  250,000 shares of Unilab
Common Stock at an exercise price of $0.4375. the closing market price of Unilab
Common Stock on January 17, 1997.  Such options  vested 20% on January 20, 1998,
and will vest 20% on January 20, 1999,  20% on January 20, 2000,  20% on January
20,  2001 and 20% on January  20,  2002.  Additionally,  the  Weavil  Employment
Agreement  provided  for Mr.  Weavil to be granted on January 2, 1998 options to
purchase 250,000 shares of Unilab Common Stock at an exercise price equal to the
closing  market  price of Unilab  Common  Stock on such date.  Such options were
granted on January 2, 1998 at an exercise price of $1.75 per share. Such options
will vest in equal  installments  over five years,  beginning on January 2, 1999
and ending on January 2, 2003.

                 In  connection  with his  relocation  from  North  Carolina  to
California to begin his employment  with the Company,  Mr. Weavil was reimbursed
$41,657  for moving and other  relocation  costs,  pursuant  to the terms of his
Employment  Agreement.  In addition,  under the terms of his relocation package,
Mr.  Weavil  received a $4,000  per month  housing  allowance  for the first six
months following his move to California (January 1997 through July 1997).

                 In the event that Mr. Weavil's  employment is terminated by the
Company without Cause (as defined in the Weavil Employment Agreement) and not in
association  with a Change of  Control  (as  defined  in the  Weavil  Employment
Agreement), Mr. Weavil will receive 18 months of continued compensation (salary,
bonus and deferred compensation) and continued benefits coverage. Mr. Weavil has
agreed not to compete with the Company for 18 months  following  termination  of
employment without Cause and not in association with a Change of Control.

                 The Weavil  Employment  Agreement  also  provides  for  certain
payments to Mr. Weavil upon his termination or resignation following a Change of
Control  of Unilab  (as  defined  in the  Weavil  Employment  Agreement).  If in
association with a Change of Control, Mr. Weavil resigns his employment for Good
Reason or his employment is terminated  without Cause,  then he becomes entitled
to  receive  a lump sum in cash  equal to two times Mr.  Weavil's  annual  total
compensation (inclusive of cash bonuses and deferred compensation).

                 Baker Employment  Agreement.  On November 10, 1993,  Unilab and
Andrew H. Baker  entered into an  employment  agreement  (the "Baker  Employment
Agreement") pursuant to which he served as Chairman of the Board,  President and
Chief Executive  Officer of Unilab prior to his resignation on January 20, 1997.
Mr.  Baker  received  an annual  base  salary  of  $400,000,  subject  to upward
adjustment  at the Board of  Directors'  discretion.  In July  1996,  at his own
suggestion  Mr. Baker agreed to a voluntary 10% salary  reduction,  reducing his
base  salary to  $360,000.  (A number of other  senior  managers  of the Company
similarly accepted 10% salary reductions.) In addition, Mr. Baker accepted three
months  of his 1996 pay in  shares of Unilab  Common  Stock,  receiving  135,274
shares in lieu of cash payment of $90,000.  The number of shares received by Mr.
Baker was  calculated on the basis of the closing  market price of Unilab Common
Stock on the payroll  date for each month in which Mr. Baker  received  stock in
lieu of cash (August,  September,  October). In addition, Mr. Baker was eligible
to receive an annual bonus  ranging from 0% to 100% of his base salary if Unilab
met certain  performance  objectives to be established by the Board of Directors
of Unilab or its Compensation Committee prior to the beginning of each year. The
Baker  Employment  Agreement also provided that Unilab establish for Mr. Baker a
deferred  compensation account for each fiscal year during the Employment Period
to be credited annually with an additional amount equal to 8% of Mr.
Baker's total cash compensation (inclusive of all bonuses) for that year.

                 The Baker  Employment  Agreement  stated  that in the event Mr.
Baker's  employment  was  terminated  by death,  disability,  without  Cause (as
defined in the Baker Employment Agreement) or for Good Reason (as defined in the
Baker Employment Agreement),  Mr. Baker (or his estate) was entitled to receive,
among  other  things,  a lump sum  payment  equal to the then full  value of Mr.
Baker's  vested  award  under  any  restricted  stock,  stock  option  or  stock
appreciation  rights plan or pursuant to any stock option  agreement  (the "Lump
Sum  Option  Payment")  and the full value  contained  in Mr.  Baker's  deferred
compensation  account plus an amount equal to his base salary for the greater of
18  months  following  the  termination  date or the  remainder  of the two year
Employment Period.

                 The  Baker  Employment  Agreement  also  provided  for  certain
payments  to Mr.  Baker upon his  termination  following  a Change of Control of
Unilab (as defined in the Baker Employment Agreement). If within two years after
a Change of Control,  Mr. Baker  resigned his  employment for Good Reason or his
employment  was  terminated  without  Cause,  then he was to become  entitled to
receive the Lump Sum Option Payment and an additional  lump sum in cash equal to
2.99 times Mr.  Baker's  average  total  cash  compensation  (inclusive  of cash
bonuses and deferred  compensation)  for the three  previous  fiscal  years.  In
addition,  the Baker Employment Agreement permitted Unilab to require by written
notice that Mr.  Baker not compete  directly  or  indirectly  with Unilab in any
state in which Unilab has a clinical laboratory testing facility for a period of
three years from the date of  termination  following  a Change of  Control.  The
Baker Employment Agreement also required in certain circumstances that Mr. Baker
not compete  directly or  indirectly  with Unilab for a period of two years from
the date of  termination  at any other  time other  than  following  a Change of
Control.  Generally,  the Baker Employment Agreement was superseded by the Baker
Transition Agreements.  See "Resignation of Andrew Baker as Chairman,  President
and Chief Executive Officer".

                 Michaelson Employment  Agreement.  On November 10, 1993, Unilab
and Mr.  Michaelson  entered into an employment  agreement  pursuant to which he
served as Senior Vice  President-Finance,  Treasurer and Chief Financial Officer
of Unilab.  The term of Mr.  Michaelson's  agreement ended on December 31, 1997,
and was not renewed in light of Mr. Michaelson's  resignation.  See "Resignation
of Richard A. Michaelson as Senior Vice  President-Finance,  Treasurer and Chief
Financial Officer". During 1997 Mr. Michaelson received an annual base salary of
$247,500  (following  Mr.  Michaelson's  voluntary 10% salary  reduction in July
1996,  as part of a  voluntary  salary  reduction  for  senior  management).  In
addition, Mr. Michaelson was eligible to receive an annual bonus ranging from 0%
to  80% of  his  base  salary  if  Unilab  met  certain  performance  objectives
established by the Board of Directors or its Compensation Committee prior to the
beginning of each year. The agreement also provided that Unilab will establish a
deferred compensation account for Mr. Michaelson for each fiscal year during the
Employment  Period to be  credited  annually  with an amount  equal to 8% of Mr.
Michaelson's  total cash compensation  (inclusive of all bonuses) for that year.
All such deferred  compensation was paid to Mr.  Michaelson under the Michaelson
Transition Agreements.

                 Mr. Michaelson's employment agreement contained essentially the
same terms as Mr. Baker's employment agreement with respect to (i) payments made
upon  termination by death,  disability,  without Cause and resignation for Good
Reason,  (ii)  payments  made upon  termination  without  Cause upon a Change of
Control  and  resignation  for Good  Reason  upon a Change of Control  and (iii)
non-competition.  Generally,  the Michaelson employment agreement was superseded
by  the  Michaelson  Transition  Agreements.  See  "Resignation  of  Richard  A.
Michaelson  as Senior  Vice  President-Finance,  Treasurer  and Chief  Financial
Officer".

                  Baker Transition Agreements

                 As noted above,  in connection  with Mr.  Baker's  resignation
as Chairman,  President and Chief  Executive  Officer, effective as of January
20, 1997, Mr. Baker executed the Baker  Transition  Agreements.  See 
"Resignation of Andrew Baker as Chairman, President and Chief Executive
Officer."

                  Michaelson Transition Agreements

                  As  noted  above,   in   connection   with  Mr.   Michaelson's
resignation as Senior Vice President-Finance,  Treasurer and CFO as of September
17, 1997, his resignation as an officer (Senior Vice President)  effective as of
December  31, 1997,  his  appointment  as a director of the  Company,  effective
September  17,  1997 and his  retention  as a  consultant  to the  Company as of
January 1, 1998, Mr. Michaelson executed the Michaelson  Transition  Agreements.
See  "Resignation  of Richard A.  Michaelson  as Senior vice  President-Finance,
Treasurer and Chief Financial Officer".

Compensation Committee Interlocks and Insider Participation

                 From January 1, 1997 until March 7, 1997 the following
directors  served on Unilab's  compensation  Committee:  Kirby L. Cramer
(Chairman),  Michael B. Hoffman,  Walker Lewis, Thomas O. Pyle and Gabriel B.
Thomas.  (Messrs.  Hoffman,  Lewis and Pyle are no longer  directors.)  From
March 7, 1997 until  January  22,  1998,  the  Compensation  Committee  was
comprised  of Messrs.  Cramer (Chairman),  Hoffman and Thomas.  Since
January 23, 1998, the Compensation  Committee has been comprised of Messrs. 
Cramer and Thomas. Mr. Hoffman is a Senior Managing Director of The Blackstone
Group, which has periodically  provided  investment banking services to the
Company.  Mr. Thomas served as President of the Company from 1989 through
January 1992.


Compensation Committee
Report on Executive Compensation

                                   Philosophy

                 The Company has developed an overall  compensation  program and
specific compensation plans which are designed to enhance corporate performance,
and thus  stockholder  value, by aligning the financial  interests of executives
with those of its  stockholders.  In pursuit of these  overall  objectives,  the
structure  and scope of the  Company's  compensation  program  are  designed  to
attract key  executives  to the Company and retain the best  possible  executive
talent;  to reinforce  and link  executive  and  stockholder  interests  through
equity-based  plans;  and to  provide a  compensation  package  that  recognizes
individual performance in conjunction with overall corporate performance.

                 Principal Components of Executive Compensation

                 The principal elements of the Company's executive  compensation
program  consist of both annual and long-term  programs and include base salary,
annual cash and/or stock bonus if performance  objectives are achieved,  and, at
appropriate  intervals,  long-term  incentive  compensation in the form of stock
option grants and/or  awards of restricted  stock.  Such stock option grants and
restricted  stock  awards  are  issued  to the  Company's  executives  and other
employees  under the Stock Option and  Performance  Incentive  Plan. The Company
also provides medical and other fringe benefits  generally  available to Company
employees  and,  for  certain  of its  selected  senior  executives,  a deferred
compensation plan and the SERP.

                 In order to make certain that  implementation  of its executive
compensation  policies  are  made  on a  fully  informed  basis,  with  concrete
information as to the  compensation  policies  adopted by comparable  companies,
during 1997 (specifically in connection with the Baker Transition Agreements and
the compensation  package for David Weavil,  who became Chairman,  President and
Chief  Executive  Officer in January 1997) the  Compensation  Committee  engaged
Towers Perrin, a leading compensation  consulting firm, to advise the Committee,
as it had  done  in  previous  years.  The  Committee's  executive  compensation
policies are based in part on the information  provided by, and  recommendations
made by, Towers Perrin.

                 Base salaries for  executives  are determined by evaluating the
responsibilities of the position held and the experience of the individual, with
reference to the  competitive  marketplace  for  executive  talent,  including a
comparison to base salaries for positions having comparable  responsibilities at
other companies in the clinical  laboratory  industry  (including certain of the
companies  included  in the  index  used  for the  Performance  Graph  contained
herein).  In addition to comparing base salary  compensation of other companies,
consideration  is given to the relative  overall  corporate  performance  of the
Company in relation to its  competitors  in the industry,  with the objective of
achieving  standards and setting base executive salaries in the Company somewhat
above the market rate paid for comparable  positions in the clinical  laboratory
industry.  In July 1996 at the request of the Company's Chief Executive Officer,
with the backing of the Compensation Committee,  the Company's senior executives
voluntarily  accepted a 10%  reduction in base salary in light of the  Company's
disappointing 1996 financial  performance.  With one exception (a raise given in
connection  with a  promotion),  base  salaries of senior  executives  have been
frozen since that time.

                 The Company's  executive  officers and other key persons may be
eligible for an annual cash and/or stock bonus under their individual employment
agreements.  Individual  performance objectives formulated by Company management
are recommended by the Chief Executive  Officer for approval by the Compensation
Committee or the Board and are awarded upon the discretionary  recommendation of
the CEO.  Eligible  executives  may  receive  bonus  awards  based upon  certain
percentages  of base salary at threshold and maximum  levels  appropriate to the
nature of their position in the Company.  Whether any bonus is awarded,  and, if
so, the amount thereof  depends upon actual  performance  against  predetermined
individual and corporate  objectives  established by the CEO or the Compensation
Committee. No such cash bonuses were awarded in 1997 (except for a cash bonus to
David C. Weavil, the Company's Chairman,  President and Chief Executive Officer,
in connection  with an amount owing under his employment  agreement.  See "Chief
Executive Officer's  Compensation").  However, based upon the Company's improved
financial  performance  during  1997 (and  especially  during the second half of
1997),  cash bonuses were awarded to certain senior executives of the Company in
February  1998,  in  consideration   for  meeting   pre-determined   performance
objectives in 1997.

                 Awards of stock  options  and  restricted  stock have been made
periodically  to executive  officers and certain other  employees of the Company
upon  consultation  with and  recommendation  of the Chief Executive Officer and
approval of the Compensation Committee,  which may, under certain circumstances,
be submitted for ratification by the Board of Directors.  Such options have been
granted with an exercise  price equal to the market value of Unilab Common Stock
on the date of  grant.  The  purpose  of these  awards  has  been to  provide  a
meaningful equity interest in the Company to Company executives in a format that
is designed to retain and align the financial interests of these executives with
those of  stockholders.  The Board and the Compensation  Committee  believe that
this program has been and will be instrumental in focusing the Company's  senior
management  on  building  long-term  value  for  stockholders.  It has  been the
practice of the Company to make grants of stock options with a staggered vesting
schedule and  forfeiture  of shares if not exercised  within a specified  period
following  separation  from the Company's  employ.  The restricted  stock grants
similarly  contain  certain  restrictions  on vesting and  transfer  tied to the
recipient's  continued  employment by the Company.  These  restrictions on stock
option awards and restricted  stock grants are designed to encourage  recipients
to remain in the  Company's  employ in order to recognize  the full value of the
awards.  The term over which these restrictions have applied typically is one to
five  years in the case of stock  options  and two to five  years in the case of
restricted  stock.  To date,  only stock options and restricted  stock have been
granted under the Stock Option and  Performance  Incentive  Plan;  however,  the
Compensation  Committee  expects that other forms of  equity-based  compensation
permitted under that plan may also have similar restrictions.

                 In  addition,  the Company  provides  health care  benefits and
profit sharing for senior  executives  and other key persons on terms  generally
available to all Company  employees.  The Compensation  Committee  believes that
such  benefits are  comparable  to those  offered by other  clinical  laboratory
companies.  Except as noted  elsewhere  in this  proxy  statement,  the value of
perquisites,  as determined in accordance  with the rules of the  Securities and
Exchange Commission relating to executive  compensation,  did not exceed $50,000
or 10% of the total salary and bonus of any executive officer in the last fiscal
year.

                 Since no executive officer of the Company received compensation
in excess of $1  million  during  1997,  the  Compensation  Committee  presently
anticipates  that all compensation  paid to executive  officers will qualify for
deductibility under Section 162(m) of the Internal Revenue Code, which limits in
certain  circumstances the deductibility of compensation in excess of $1 million
paid to certain executive officers, except for "performance-based  compensation"
which complies with requirements imposed under Section 162(m).

                 From February 27, 1996 to March 7, 1997 Messrs. Cramer and Pyle
comprised a  subcommittee  (the  "Subcommittee")  of "outside  directors" of the
Compensation  Committee.  From and after March 7, 1997,  the  sub-committee  has
consisted  of Messrs.  Cramer and  Thomas.  This  subcommittee  administers  and
approves   grants  of  stock  options  under  the  Company's  Stock  Option  and
Performance Incentive Plan and administers the SERP.


                     Chief Executive Officer's Compensation

                  For 1997, David C. Weavil,  the Chairman,  President and Chief
Executive  Officer of the Company during such period,  was paid a base salary of
$400,000.  The  Compensation  Committee  considered  Mr.  Weavil's  salary to be
appropriate  in light of (i) the need to recruit Mr. Weavil in January 1997 with
an attractive  compensation package, (ii) Mr. Weavil's compensation at his prior
employer,  (iii) the  compensation  of other senior  executives  in the clinical
laboratory  industry  and (iv) the fact that the base salary was the same as the
base salary of the Company's former CEO being replaced by Mr. Weavil. Mr. Weavil
received a $100,000  bonus in January  1997  payable in shares of Unilab  common
Stock (228,571  shares) and a $100,000 cash bonus,  which was paid in the second
half of 1997. Mr. Weavil also received deferred  compensation equal to 8% of his
1997 cash compensation (valued at $40,000),  plus participation in the Company's
Executive  Retirement  Plan (valued at $24,560),  which  brought his annual cash
compensation  for 1997 to $464,710.  Pursuant to his Employment  Agreement,  Mr.
Weavil also  received in January  1997  options to  purchase  250,000  shares of
Unilab Common Stock at an exercise price of $0.4375 per share,  the then current
market price,  and another  250,000  options to purchase Common Stock in January
1998 at an exercise  price of $1.75 per share,  the then current  market  price.
Pursuant to the terms of the Weavil Employment  Agreement,  Mr. Weavil purchased
from the Company on January 20, 1997  $500,000  worth of newly issued  shares of
Unilab  common  stock  based on the January 17,  1997  closing  market  price of
$0.4375.  Accordingly,  Mr. Weavil  purchased  1,142,857 shares of Unilab Common
Stock at that time.  Mr.  Weavil was  granted  demand  registration  rights with
respect to such shares,  as well as the 228,571 shares he received in payment of
his $100,000 bonus. The $500,000  utilized by Mr. Weavil to purchase such shares
was borrowed from the Company.  The repayment of $250,000 of such borrowed funds
was due 180 days after the date of loan (i.e., by July 20, 1997),  was unsecured
and bore interest at 6% and was repaid on time.  Repayment of the other $250,000
of such funds is due five years after  issuance  (i.e. by January  20,2002),  is
secured by the shares of Unilab Common Stock purchased from the proceeds thereof
and bears interest at 6%. Such  compensation and bonus structure were determined
pursuant to Mr. Weavil's Employment Agreement, described above under the caption
"Employment Agreements; Other Arrangements -- Weavil Employment Agreement".

                  Under the terms of Mr. Weavil's  Employment  Agreement,  bonus
payments for 1998 and beyond are to be determined in the discretion of the Board
of Directors or the Compensation  Committee.  The Committee  expects to base Mr.
Weavil's  1998  bonus  on the  Company's  ability  to  meet  or  exceed  certain
pre-established financial parameters.


   Compensation of Other Named Executive Officer and Key Management Personnel

                  The Company also entered into  employment  agreements with the
Company's other Named Executive Officer and other key management personnel.  The
employment  agreement  with Richard  Michaelson was superseded by the Michaelson
Transition  Agreement.  Each  agreement  provides a base salary  plus  potential
bonus,  if certain  performance  objectives  are achieved,  and other  incentive
compensation at the discretion of the Chief Executive  Officer  (approved by the
Compensation  Committee,  in the case of the  Company's  other  Named  Executive
Officer, Mr. Michaelson).

                  The Compensation  Committee  believes that  significant  stock
ownership,  through grants of stock options,  restricted stock, loans to finance
the  purchase  of  Common  Stock  and  other  forms  of  equity-based  incentive
compensation  that would be  permitted  under the Stock  Option and  Performance
Incentive  Plan,  are a major  incentive in aligning the interests of employees,
including  senior  management,  and  stockholders.  The  Compensation  Committee
therefore  intends to  continue  to explore  various  methods of  assuring  such
commonality of interest in the Company's long-term performance.

                                Kirby L. Cramer (Chairman)
                                Gabriel B. Thomas
                                Members of the Compensation Committee


Five-Year Performance Graph

                  The following  graph compares the Company's  cumulative  total
stockholder  return on Unilab Common Stock with (i) the cumulative  total return
of the Amex Market Value Index (which tracks the aggregate performance of equity
securities of companies  traded on the American Stock  Exchange) and (ii) a peer
group  comprised  of  publicly-traded   companies  engaged  principally  in  the
non-esoteric  clinical laboratory  industry.  In accordance with the regulations
promulgated by the Securities and Exchange  Commission,  the stockholder  return
for each entity in the peer group index has been weighted on the basis of market
capitalization  as of the  beginning of each  measurement  date set forth on the
graph. The graph shows historical stock price performance (assuming reinvestment
of dividends) and is not necessarily indicative of future price performance.



                          [FIVE YEAR PERFORMANCE GRAPH]



- -------------------

*     The peer group includes LabOne,  Inc. (which is included in the peer group
      for the  full  five-year  period),  Meris  Laboratories,  Inc.  (which  is
      included  in  the  peer  group  beginning   December   1995),   Laboratory
      Corporation  of  America   Holdings,   Inc.   (formerly   National  Health
      Laboratories Incorporated, which merged with Roche Biomedical Laboratories
      during 1995 under the combined name Laboratory Corporation of America, and
      is included in the peer group for the full five-year period) and Universal
      Standard  Medical  Laboratories,  Inc.  and  BioCypher  Laboratories  Inc.
      (formerly  Physicians Clinical Laboratory  Incorporated) (whose respective
      initial public offerings occurred in 1992 and,  accordingly,  whose stocks
      are included in the peer group for the full 5 year period).

**    Assumes $100 invested on December 31, 1992 in stock or index  (including
      reinvestment  of  dividends).  Assumes fiscal year ending December 31.

                 SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS

           The following table sets forth certain information,  to the knowledge
of Unilab,  regarding the beneficial  ownership of Unilab Common Stock as of the
Record Date by all  stockholders  known by Unilab (based on public  filings with
the Commission,  except as otherwise noted) to be the beneficial  owners of more
than 5% of the outstanding  shares of Unilab Common Stock.  For purposes of this
table, a person or group of persons is deemed to have "beneficial  ownership" of
any shares as of a given date which such person has the right to acquire  within
60 days after such date. For purposes of computing the percentage of outstanding
shares held by each person or group of persons named above on a given date,  any
security  which such person or persons  has the right to acquire  within 60 days
after such date is deemed to be outstanding, but is not deemed to be outstanding
for the purpose of  computing  the  percentage  ownership  of any other  person.
Except as noted below, each person has full voting and investment power over the
shares indicated.

                                               Number           Percent of
                                            of Shares of       Common Stock
Name and Address of                        Common Stock        Beneficially
Beneficial Owner                          Beneficially Owned      Owned(1)    

Rockefeller & Co., Inc.                     3,591,504(2)           8.8%
30 Rockefeller Plaza
New York, NY  10112

Andrew H. Baker                             2,716,228(3)           6.7%
c/o Focused Healthcare Partners, Ltd.
401 Hackensack Avenue
Hackensack, NJ  07601
- --------------------

(1)   Calculated  pursuant to Rule 13d-3  promulgated  under the  Exchange
      Act and based on  40,632,898  shares of Unilab  Common  Stock
      outstanding as of the Record Date.

(2)   As reported in Schedule 13G, Amendment No. 2 filed with the Commission on
      February 17, 1998.

(3)   Mr. Baker is the former Chairman, President and Chief Executive Officer of
      the Company.  Represents  2,176,238 shares directly or indirectly owned by
      Mr.  Baker (of which  18,069  shares  are  directly  owned by Mr.  Baker's
      spouse) and beneficial  ownership of 540,000 shares issuable upon exercise
      of fully  vested and  presently  exercisable  options to  purchase  Unilab
      Common  Stock.  Based on Company  records,  a Form 4 filed by Mr. Baker on
      January 30, 1997 and a Schedule 13D filed by Mr. Baker on April 16, 1997.


                            CERTAIN RELATIONSHIPS AND
                        TRANSACTIONS WITH RELATED PERSONS

The Blackstone Group

       The  Company has  periodically  engaged The  Blackstone  Group,  of which
Michael B.  Hoffman,  a director  of the  Company  until  January 22, 1998 and a
member of the  Compensation  and  Nominating  Committees  until such date,  is a
Senior Managing Director, to provide investment banking services.

Indebtedness of Management

       In connection with the move of Unilab's principal  executive offices from
New Jersey to California  and Mr. Baker's  purchase of a home in California,  in
October  1992,  Unilab  loaned to Mr.  Baker $1 million  to be  repaid,  without
interest, on the earlier of (i) three years from the date on which such loan was
made  and  (ii) 30 days  after  the  closing  of the  sale by Mr.  Baker  of his
residence in New Jersey. The loan was secured by a first mortgage on Mr. Baker's
California  home.  Unilab  was  obligated  to  pay to Mr.  Baker  as  additional
compensation  an amount  equal to the  amount of income tax paid,  if any,  as a
result of the receipt of such loan. In August 1994,  Mr. Baker  refinanced  such
loan with a major commercial bank, which provided  $500,000 to the Company.  The
Company  released  the  mortgage on Mr.  Baker's  California  home and Mr. Baker
granted a first mortgage to the bank that  refinanced his loan. The remainder of
the Company's loan to Mr. Baker was unsecured.

       In connection with the Baker  Transition  Agreements,  Mr. Baker agreed
to use his best efforts to sell his California  house soon as possible.  The
Company has the right to determine  the  acceptability  of any bid to purchase
the house and Mr. Baker agreed to follow the Company's  reasonable  instructions
in selling the house. Mr. Baker has agreed to use $500,000 of the proceeds from
the sale of the house to pay the outstanding  bank  indebtedness on the house,
with the proceeds in excess of $500,000 being retained by Mr. Baker. The Company
forgave the remaining  $500,000 of the loan to Mr. Baker.  Mr. Baker was unable
to sell his  California  house.  In light of his inability to sell the
California house, effective as of April 1, 1998 Mr. Baker assumed responsibility
for all costs associated with the house, including costs for mortgage, interest
and taxes previously paid by the Company pursuant to the Baker Transition
Agreements.

       Effective  April 15,  1997,  the  Company  paid the  principal  amount of
$300,000 to a commercial  bank in payment of a loan Mr. Baker had taken from the
bank in April 1994 in order to pay taxes on "paper  profits" Mr. Baker  realized
as a result of the  Company's  November  1993  reorganization  transaction  with
Corning. The Company had executed a guarantee of this loan at the time Mr. Baker
received the loan. In consideration  for the Company's payment of the loan under
its  guarantee,  Mr.  Baker  (i)  executed  a  $300,000,  6%  five-year  secured
promissory note (the "Baker Note") in favor of the Company and (ii) was required
to  purchase  $300,000  of newly  issued  shares of Unilab  Common  Stock at the
closing market price on a date or dates selected by Mr. Baker prior to September
1, 1997 (the "New Shares"). Mr. Baker acquired such shares on April 3, 1997 at a
per share  purchase  price of  $0.5625,  resulting  in the  purchase  of 533,333
shares.  The Baker Note is secured by the  Transition  Shares as well as the New
Shares. All restrictions on the Transition Shares and New Shares will lapse upon
Mr.  Baker's  payment in full of the  principal  of and accrued  interest on the
Baker  Note,  which can be paid in cash or shares of Unilab  Common  Stock.  The
Baker Note may be prepaid at any time.  See  "Resignation  of Andrew H. Baker as
Chairman, President and Chief Executive Officer".

       Also effective  April 15, 1997, the Company paid the principal  amount of
$150,000 to a commercial bank in payment of a loan Mr. Michaelson had taken from
the bank in April  1994 in order to pay the  exercise  price of a  warrant  (the
"Warrant")  to  purchase  35,000  shares of Unilab  Common  Stock (the  "Warrant
Shares"),  as well as tax  payments  related to such  exercise.  The Company had
executed a guarantee of the loan at the time Mr.  Michaelson  received the loan.
In consideration for the Company's payment of the loan under the guarantee,  Mr.
Michaelson  executed  a  $150,000  6%  five-year  secured  promissory  note (the
"Michaelson  Note") in favor of the Company.  The Michaelson  Note is secured by
the Warrant Shares.  Mr. Michaelson has the option of paying the Michaelson Note
in full by  delivery  of the  Warrant  Shares or by payment of cash or shares of
Unilab Common Stock.  In connection with the Michaelson  Transition  Agreements,
the Michaelson Note was converted to a non-interest bearing note.
      In connection  with the hiring of David Weavil as the Company's  Chairman,
President and Chief  Executive  Officer in January 1997,  the Company loaned Mr.
Weavil $500,000,  which Mr. Weavil used to acquire 1,142,857 newly issued shares
of Unilab Common Stock,  valued at the January 17, 1997 closing  market price of
$0.4375.  $250,000 of such amount due was  unsecured and bore interest at 6% and
was repaid on schedule on July 20, 1997.  Repayment of the other $250,000 is due
on January 20, 2002, is secured by the shares of Unilab  Common Stock  purchased
with the proceeds thereof and bears interest at 6%.

Section 16(a) Beneficial Ownership Reporting Compliance

           Based upon a review of Forms 3, 4, and 5 filed with the Commission by
the Company's directors and officers in 1997, the Company believes that all such
required forms were filed on a timely basis.


                                   PROPOSAL 2
               RATIFICATION AND APPROVAL OF SELECTION OF AUDITORS

            The Company has selected Arthur Andersen LLP ("Arthur  Andersen") to
audit the Company's financial statements for the fiscal year ending December 31,
1998. Arthur Andersen audited the Company's financial  statements for the fiscal
year ended December 31, 1997. The Board of Directors considers it appropriate to
submit for ratification and approval by the stockholders its selection of Arthur
Andersen.

       It is expected that a  representative  of Arthur Andersen will be present
at the Meeting and will be given the  opportunity  to make a statement  if he or
she  desires  to do so.  It is also  expected  that the  representative  will be
available to respond to appropriate questions from stockholders.

       Ratification  and approval of the selection of the  independent  auditors
requires the affirmative vote of a majority of the shares of Unilab Common Stock
represented at the Meeting in person or by proxy.

       THE BOARD OF DIRECTORS HAS  UNANIMOUSLY  APPROVED THE SELECTION OF ARTHUR
ANDERSEN LLP AND RECOMMENDS  THAT  STOCKHOLDERS  VOTE FOR THE  RATIFICATION  AND
APPROVAL OF SUCH SELECTION.


                     ANNUAL REPORT AND FINANCIAL STATEMENTS

            You are referred to the Annual Report to Stockholders for the fiscal
year ended  December  31,  1997,  including  the  financial  statements  and the
management's  discussion and analysis of the Company's  financial  condition and
results  of  operations   contained  therein,   which  has  been  previously  or
concurrently delivered to stockholders,  for your information.  The Company will
provide,  without charge,  to any stockholder upon written request a copy of the
Company's  Annual  Report on Form 10-K  (excluding  exhibits but  including  the
financial  statements  and  financial  statement  schedules)  for the year ended
December 31, 1997.  Such written  requests  should be directed to: Mark L. Bibi,
Secretary,  Unilab Corporation,  18448 Oxnard Street, Tarzana, California 91356.
The Annual  Report to  Stockholders  is not to be regarded  as proxy  soliciting
material or a communication by means of which any solicitation is to be made.

                              STOCKHOLDER PROPOSALS

            Any  proposal  by a  stockholder  intended  to be  presented  at the
Company's 1999 Meeting of Stockholders  must be received by the Company no later
than December 15, 1998 to be included in the Company's  proxy statement and form
of proxy relating to such annual  meeting.  Any proposal  should be addressed to
the offices of the Company,  18448 Oxnard  Street,  Tarzana,  California  91356,
Attn:
Secretary.


                                  OTHER MATTERS

            The Board does not know of any other  matters  to be brought  before
the Meeting.  However,  if any other  matters  should  properly  come before the
Meeting,  it is the intention of the persons named in the accompanying  Proxy to
vote such Proxy as in their discretion they may deem advisable.

                                 By Order of the Board of Directors



                                 Mark L. Bibi
                                 Secretary

Dated:  April 15, 1998



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