UNILAB CORP /DE/
10-K, 1999-03-24
MEDICAL LABORATORIES
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    FORM 10-K


[X]    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES
       EXCHANGE ACT OF 1934

       For the fiscal year ended              December 31, 1998
                                             ------------------

[  ]   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
       EXCHANGE ACT OF 1934

       For the transition period from __________ to __________

                           Commission File No. 0-22758

                               UNILAB CORPORATION
             (Exact name of Registrant as specified in its Charter)

              Delaware                              95-4415490
(State or other jurisdiction of           (I.R.S. Employer Identification No.)
  incorporation or organization)          

 18448 Oxnard Street,  Tarzana, California              91356
  (Address of principal executive offices)            (Zip code)

                                 (818) 996-7300
              (Registrant's telephone number, including area code)

 Securities  registered  pursuant  to  Section  12(b)  of  the  Act:  None
 Securities registered pursuant to Section 12(g) of the Act:

   Title of Each Class              Name of Each Exchange on Which Registered
 Common Stock, $.01 par value              American Stock Exchange

 Indicate by check mark whether the  Registrant  (1) has filed all reports
 required to be filed by Section 13 or 15 (d) of the  Securities  Exchange
 Act of 1934 during the  preceding 12 months (or for such  shorter  period
 that the Registrant was required to file such reports),  and (2) has been
 subject to such filing requirement for the past 90 days.
 Yes   X         No____

 Indicate by check mark if  disclosure of  delinquent  filers  pursuant to
 item  405 of  regulation  S-K is not  contained  herein,  and will not be
 contained,  to the best of registrant's knowledge, in definitive proxy or
 information statements incorporated by reference in Part III of this Form
 10-K or any amendment to this Form 10-K. [ ]

 At February 12, 1999, 40,729,293 shares of Registrant's Common Stock, par
 value $.01 per share were outstanding.  The aggregate market value of the
 Common Stock,  based on the closing price on the American  Stock Exchange
 as of February 12, 1999,  held by  nonaffiliates  of the  Registrant  was
 approximately $104.2 million.

                       DOCUMENTS INCORPORATED BY REFERENCE

 Part II - Portions  of the  Annual  Report to  shareholders  for the year
 ended December 31, 1998 Part III - Proxy  Statement for Annual Meeting of
 Stockholders to be held June 17, 1999

 Page 1 of 39 pages.


<PAGE>








                                TABLE OF CONTENTS

Item                                                                      PAGE

Part I.       1  Business.................................................   3

              2  Properties...............................................  20

              3  Legal Proceedings........................................  21

              4  Submission of Matters to a Vote
                 of Security Holders......................................  23

Part II.      5  Market for the Registrant's Common Equity and
                 Related Stockholder Matters..............................  26

              6  Selected Financial Data..................................  27

              7  Management's Discussion and Analysis of Financial
                 Condition and Results of Operations......................  28

              8  Financial Statements and Supplementary Data..............  28

              9  Changes in and Disagreements with Accountants on
                 Accounting and Financial Disclosure......................  28

Part III.    10  Directors and Executive Officers of the Registrant.......  29

             11  Executive Compensation...................................  29

             12  Security Ownership of Certain Beneficial Owners
                 and Management and Directors.............................  29

             13  Certain Relationships and Transactions with Related
                 Persons..................................................  29

Part IV.     14  Exhibits, Financial Statements, Financial Statement
                 Schedules and Reports on Form 8-K........................  30

Signatures       .........................................................  32


<PAGE>
                                     PART I

Item 1.          Business


General

                 Unilab  Corporation  ("Unilab" or the "Company") is the largest
independent  clinical  laboratory  testing  company  in  California,   providing
laboratory  testing services to physicians,  managed care groups,  hospitals and
other  health  care  providers.  The  Company  believes  that  its  revenues  in
California  for the year ended  December 31, 1998 were  approximately  twice the
annual sales in California of the next largest  independent  clinical laboratory
in that market.  During most of such  period,  Unilab had  approximately  15% of
California's  independent clinical laboratory market, which is the largest state
clinical  laboratory  market in the United States. In November 1998, the Company
completed  the  acquisition  of  substantially   all  of  the  assets  of  Meris
Laboratories,  Inc., a San Jose,  California  based  independent  clinical  lab,
resulting  in  an  increase  of  Unilab's  estimated  market  share  to  20%  of
California's  independent  clinical  laboratory market. As of December 31, 1998,
the  Company  operated  three   centrally-located   full-service   laboratories,
approximately 40  strategically-located  short turn around ("STAT") laboratories
and approximately 270  conveniently-located  patient service centers ("PSC"). As
of December 31, 1998, the Company  processed on average 37,000 patient specimens
and performed over 85,000 test batteries per work day.

Facilities and Testing

                 Unilab   currently   operates   three   full-service   clinical
laboratories in San Jose, Tarzana (Los Angeles) and Sacramento, California which
offer over 1,000 clinical testing procedures,  ranging from routine screening to
advanced technical procedures,  used in the diagnosis,  monitoring and treatment
of diseases and other medical  conditions.  Unilab  operates 24 hours a day, 365
days a year,  utilizing a fully  integrated  collection and  processing  system.
Patient  specimens are collected  from client offices or Unilab's own collecting
stations and efficiently transported to full-service or STAT laboratories, where
each  specimen and related test  request form is checked for  completeness,  bar
coded and logged for testing and billing purposes into Unilab's computer system.
Laboratory  technicians then perform the requested tests, with results generally
available to clients the next morning.  Unilab's clinical computer program keeps
track of  patients'  samples,  reports  test  results in a  readable  format and
maintains records and billing information. The Company is in the final stages of
upgrading and modifying its laboratory,  billing and accounting systems in order
for such systems to properly recognize and perform date calculations in the year
2000 (the "Year 2000 issue").  The company spent approximately  $400,000 in 1998
and  anticipates  spending  another  $100,000 in 1999 for  additional  hardware,
upgraded  software and consulting time to enable the Company to properly address
the Year 2000  issue.  The  expected  cost to fix the Year 2000 issue is in line
with the company's original  estimates.  While the consequences of an incomplete
or untimely resolution of the Year 2000 issue could have a significant impact on
the  Company  finalizing  laboratory  results,  properly  billing  the  numerous
different payor groups and gathering and reporting payroll, accounting and other
employee and financial information, the Company believes that it will adequately
resolve  the Year  2000  issue.  The  Company  believes  that  modifications  to
laboratory  software  and  equipment  and  most  accounting  systems  have  been
completed and the final modifications to the billing and payroll systems will be
completed by the end of the first  quarter  1999 in order to provide  sufficient
time for further modifications, if any, prior to the arrival of the year 2000.
<PAGE>

                 As  part  of  its   contingency   planning,   the  Company  has
standardized  the platform and  software  used to process and report  laboratory
results during the last several years.  In addition,  the Company  converted the
last billing system not on the Company's standard billing platform in 1998. If a
problem  occurred with the  laboratory  hardware or software,  the Company might
have to rely on outside  reference  laboratories to process  specimens until the
Year 2000 issue was fixed.  If the  Company  had to rely on another  location or
outside  reference  laboratory  to process  specimens,  turn around time on test
results would be diminished and billings and cash  collections from payor groups
could be  significantly  delayed.  The  Company  is  reliant  on the  ability of
numerous payor groups,  primarily  insurance companies and government payors, to
solve their Year 2000 issues in order to process the Company's billings and make
appropriate cash remittances. If such payor groups do not properly resolve their
Year 2000 issues, cash collections could be significantly  delayed. In addition,
the  Company  sends  less  than  2%  of  its  specimens  to  outside   reference
laboratories  for testing and does not believe it would have difficulty  finding
another  reference  laboratory  to perform such tests if its current main vendor
encounters  difficulties  with the Year 2000  issue.  The  Company has asked all
significant  vendors to report in writing to the  Company on the status of their
Year 2000 issue and whether their  systems will be compliant in sufficient  time
to satisfy the Company's current requirements and workflow.  The Company reviews
such reports regularly and makes  modifications to its own planning process,  if
necessary, based on the reports received from vendors.

                 Tests  performed  by Unilab  measure the levels of, and analyze
chemical and cellular  components  in, human body fluids and tissue and are used
in the diagnosis,  monitoring and treatment of disease.  They include procedures
in the areas of blood chemistry,  hematology,  urine chemistry, tissue pathology
and cytology,  among others.  Commonly ordered  individual tests include red and
white blood cell counts, PAP smears,  blood cholesterol level tests,  urinalysis
and procedures to measure blood sugar levels and to determine pregnancy. Routine
test groups include tests to determine the function of the kidney,  heart, liver
and thyroid,  as well as other organs, and a general health screen that measures
several  important  body  health  parameters.  Many  of the  routine  tests  are
performed by automated equipment and are capable of being performed and reported
within a 24-hour period.  Approximately 85% of the tests conducted by Unilab are
considered to be routine.  Reports are frequently sent via telecommunications to
equipment  installed by Unilab in the  physicians'  offices or are  delivered by
hard copy.

                 Unilab also conducts esoteric testing services.  Esoteric tests
generally require complex manual techniques,  a higher degree of technical skill
and knowledge and sophisticated equipment. As a consequence,  esoteric tests are
priced higher than routine  tests.  Two examples of esoteric  tests  provided by
Unilab  include  immunoelectrophoresis,  used for the  diagnosis  of  autoimmune
disorders and myelomas,  and hepatitis markers,  used for the diagnosis of acute
hepatitis A and B and for  identification of chronic carriers of these diseases.
The number of esoteric tests performed by the Company has been increasing as new
medical discoveries are made and testing procedures  developed.  Unilab performs
more than 98% of the tests  requested  by its  clients,  with the  remaining  2%
performed by third party reference laboratories with whom Unilab contracts. On a
revenue basis,  approximately 6% of testing fees collected by Unilab are paid to
third party reference laboratories or pathology services.

Customers

                 Unilab  provides  testing  services  to a broad range of health
care providers.  The following  factors,  among others, are often used by health
care  providers  in  selecting  a  laboratory:  (i)  accuracy,   timeliness  and
consistency in reporting test results;  (ii) size and scope of testing  services
performed;  (iii) service capability and convenience  offered by the laboratory;
(iv) pricing of the laboratory's  testing  services;  (v) extent of managed care
exclusive contract  coverage;  (vi) local STAT testing  availability;  and (vii)
reputation of the laboratory for the foregoing.
<PAGE>

                 The primary  types of  customers  that Unilab  services  are as
follows:

o Physicians  and  Physician  Groups.  Physicians  performing  testing for their
patients  who are  unaffiliated  with a pre-paid  health plan are the  principal
source  of  Unilab's  clinical  laboratory  business.   These  physicians  often
participate in Independent Physician Associations  ("IPAs").  Unilab markets its
services to physicians and physician groups through its sales force and competes
primarily  on the basis of the  accuracy of testing,  convenient  locations  for
patient  specimen  collection,  rapid test result  reporting  and  informational
services,  and its competitive  pricing.  Fees for clinical  laboratory  testing
services  rendered for physicians'  non-managed  care patients are billed to the
patient's  appropriate  third-party payor such as private  insurance  companies,
Medicare and  Medicaid.  When Unilab  provides  contracted  testing  services to
physicians  who  belong to IPAs,  the  Company  bills the IPA  (usually  under a
capitated arrangement).

o Independent  Physician  Associations.  Physicians  often band together to form
IPAs as a means to achieve greater local  recognition and contracting  leverage.
These IPAs often provide primary care services under  capitated  arrangements to
HMOs, and therefore often desire to purchase support services (like lab testing)
under capitated  arrangements.  As stated above,  if Unilab provides  contracted
testing  services to physicians who belong to an IPA, the Company bills the IPA.
Otherwise,  services  provided to other  patients seen by these  physicians  are
billed to various  other  payors such as  insurance,  client  bill,  Medicare or
Medicaid.

o Health Maintenance Organizations and Other Managed Care Groups. HMOs and other
managed care payors (which designate the laboratory to be used for tests ordered
by the physician)  represent a substantial  portion of Unilab's  business.  HMOs
generally select an independent  laboratory based on competitive pricing offered
to high volume  customers,  capability of the laboratory to effectively  service
incremental blocks of business,  field distribution  system,  including couriers
and PSCs to service their networks of physician providers, and the reputation of
the laboratory in the medical  community.  The Company believes that it services
more managed care contracts  than any other lab in the  California  marketplace,
and that the  Company has become a preferred  lab  services  provider to managed
care for several reasons.  First, Unilab has a state-wide presence,  which gives
managed care clients the ability to partner with one lab subcontractor  that has
state-wide coverage,  instead of several  subcontractors with limited geographic
coverage. Second, Unilab's internal cost-efficiencies allow the Company to offer
competitive pricing to the cost-conscious managed care community.  Third, Unilab
possesses  considerable  expertise in addressing the needs and issues of managed
care payors.

o Hospitals.  Unilab provides both esoteric  testing for hospitals  (which often
are not  equipped to perform  such  sophisticated  tests) and general  reference
testing  for  hospitals  which have  reduced  or  eliminated  their  in-hospital
laboratory  testing  in an attempt to reduce  their cost of  delivering  patient
care. The selection of an  independent  laboratory by hospitals is usually based
on  reputation  of the  laboratory  in the medical  community,  type of services
offered,  accuracy,  timeliness and  consistency of test results and competitive
pricing.

<PAGE>


o  Independent  Laboratories.  Unilab also provides reference testing services
to  independent  clinical  laboratories  which  do  not  have the full range of
Unilab's testing capabilities.

o Clinics.  Unilab has  arrangements  with a broad  network of community  health
clinics  across the state of  California  that  provide  preventive  health care
and/or medical  attention for the lower-income  and indigent patient  population
(frequently MediCal  recipients).  Under these arrangements,  the Company is the
primary  provider  of  testing  services  for  patients  who choose to use these
clinics.

                California has the highest enrollment rate (approximately 40% of
the  population)  in managed  care plans of any state in the  country  and, as a
result,  delivery  of health  care to  participants  in such  plans  has  become
integral  to  the  health  care  delivery  system   throughout  the  state.  The
proliferation  of managed care providers in the healthcare  industry has altered
the customer base of healthcare  service  providers,  especially in  California.
From 1993 to 1994,  Unilab more than doubled its number of covered  lives (i.e.,
individuals  covered by contracts  between  pre-paid health plans and Unilab for
the provision of laboratory  services) to over 2 million lives.  During 1995 the
Company  continued to serve a similar  number of covered  lives,  and during the
first half of 1996,  increased  its managed care  coverage to over 2 1/2 million
lives. Today, Unilab serves over 3 million managed care lives. This business had
historically been viewed as having  substantial  value, in large part because of
the economies of scale inherent in its considerable  volume.  It was also viewed
as a competitive  advantage in obtaining  additional  non-managed  care business
generated  from  many of the  same  offices  which  were  serving  managed  care
patients.  Increasingly,  Unilab, like other major laboratory companies, came to
recognize that the pricing received in relation to the cost of services provided
to managed care patients was disproportionately low, and the Company undertook a
concerted  effort  in  1997 to  improve  the  situation.  To  this  end,  Unilab
renegotiated  contracts  representing  approximately  two-thirds  of the covered
lives  and  received  an  average  price  increase  in  excess  of 50% on  those
renegotiated  contracts.  By year-end  1998,  Unilab had once again repriced the
capitation rates on approximately  40% of its 3 million managed care lives at an
average  increase  of  greater  than 30%.  In  addition,  these  contracts  have
increasingly  been structured so that they exclude unlimited high cost services,
such as high labor-intensive pap smears and outsourced esoteric tests. Unilab is
committed to providing  high quality  laboratory  testing at profitable  pricing
levels.

Specimen Collection and Processing

                 Unilab utilizes an extensive distribution and collection system
of approximately 320 collection routes, approximately 270 PSCs and approximately
20 courier hubs to achieve  efficient  and  integrated  collection  and testing.
Courier routes are logically designed based on lab location,  geographic density
and specimen  volume.  Strategically  located  full  service labs and  satellite
courier "hubs" serve as control  centers to ensure courier  routing is efficient
and tightly  controlled.  In addition,  PSCs act as initial specimen  processing
centers  effectively  putting  control of the  specimen in  Unilab's  possession
earlier in the process. The Company believes this distribution infrastructure is
integral to providing efficient, convenient and reliable service to its clients.

Quality Assurance

                 Unilab believes that its quality  assurance  procedures meet or
exceed  the  highest  standards  in  the  industry.  Unilab  has  established  a
comprehensive  quality  assurance  program for all of its laboratories and other
facilities to ensure that  specimens are  collected  and  transported  properly,
tests are performed  accurately,  and client,  patient and test  information are
reported,  billed  and filed  correctly.  Unilab's  quality  assurance  programs
include  (i)  preventive  maintenance  of  laboratory  testing  equipment,  (ii)
maintenance  of high  personnel  standards and training  which require that only
qualified  personnel  perform  testing,  (iii)  rigorous  utilization of control
specimens in order to ensure accuracy and precision of test equipment,  and (iv)
a  tightly  managed  collection  and  distribution  network.  In  addition,  all
laboratories certified by the Health Care Financing  Administration ("HCFA") for
participation in the Medicare program under the Clinical Laboratory  Improvement
Amendments of 1988 ("CLIA"),  such as Unilab,  must participate in basic quality
assurance programs.  Each of Unilab's laboratories is licensed (or has licensure
pending)  by  its  respective  state  authorities  and  certified  by  HCFA  for
participation in the Medicare program under CLIA.
<PAGE>

                 In addition,  Unilab  participates  in a number of  independent
proficiency   testing   programs.   Participation  in  a  federally   recognized
proficiency  testing program is a requirement of CLIA. Under these programs,  an
independent testing authority submits pre-tested samples to a laboratory.  These
tests  measure the  laboratory's  test results  against known  proficiency  test
values.  Unilab also  participates in a number of proficiency  testing  programs
which generally entail submitting  pre-tested  samples to a laboratory to verify
the laboratory  test results  against the known  proficiency  test value.  These
proficiency  programs are conducted both by Unilab on its own and in conjunction
with groups such as the College of American  Pathologists ("CAP"), and state and
Federal government regulatory agencies.  CAP is an independent  non-governmental
organization  of board  certified  pathologists  which  offers an  accreditation
program to which  laboratories  can  voluntarily  subscribe.  CAP  accreditation
program involves both on-site inspections of the laboratory and participation in
CAP's proficiency  testing program for all categories in which the laboratory is
accredited by CAP. CAP's proficiency testing program is federally recognized for
purposes of CLIA. A laboratory's  receipt of  accreditation by CAP satisfies the
Medicare   requirement  for   participation  in  proficiency   testing  programs
administered by an external source. Each of Unilab's  full-service  laboratories
in Sacramento, San Jose and Tarzana has earned full accreditation by CAP. In the
1998  External  Proficiency  Testing  Program  conducted by CAP at the Company's
three  primary  laboratories,  the total  accuracy  rate for all sections of the
laboratories  was 99.5 %, consistent  with the 1997 accuracy rate of 99.5%,  and
slightly better than the 1996 cumulative accuracy rate of 99.4%, 1995 cumulative
accuracy rate of 99.3% and the 1994 cumulative accuracy rate of 99.2%.

Regional Operations, Sales, Service and Marketing

                 As of December 31, 1998 Unilab's sales and service organization
was comprised of approximately 75 full-time sales and  sales/service  employees.
Sales  representatives  are primarily  responsible  for executing  focused sales
initiatives    established   within   their   regions,    while    sales/service
representatives  are primarily  responsible for account  retention and enhancing
client  relations  (although they also have defined  selling  responsibilities).
This separation  between  "selling" and "servicing" is a key feature of Unilab's
sales  organization,  in that sales/service staff specialize in their respective
disciplines.  Incentive compensation paid on new sales  generation--achieved  by
either sales or sales/service representatives--is designed to recognize the cost
of supporting  the new business and reward the  dedication to client support and
client retention.

                 Unilab's  marketing  department  is committed to promoting  the
Company's  mission of "maintaining  high quality and  cost-effective  laboratory
services  that  are   responsive  to  the  values  and  needs  of  patients  and
physicians."  Unilab promotes this mission and other Company initiatives through
the creation and targeted  dissemination  of marketing  materials to clients and
prospects  by  Unilab's  sales  and  sales/service  representatives  (as well as
Unilab's  couriers).  More  specifically,  Unilab's  marketing  initiatives  and
materials address four distinct objectives:
<PAGE>

o Enhance medical community  awareness of Unilab's full spectrum of services;

o Promote and sell new services and technological  advances;

o Educate clients on regulatory and compliance issues that will affect the
  medical  community;  and

o Address customer needs and concerns about new testing procedures.

                 These  marketing   initiatives   are   prioritized   through  a
collaborative effort among senior management,  sales and sales/service employees
and other relevant departments.

Acquisitions

                 Unilab's  management,  while  employed  by the  Company  or its
predecessor,  has successfully  executed and integrated a number of acquisitions
in the clinical  laboratory  industry,  which have  accounted  for a substantial
portion of the Company's growth.  Since 1989, the Company or its predecessor has
completed  nine  acquisitions  in  California,  including  five  since 1994 with
aggregate annual revenues in excess of $75 million  (including the November 1998
acquisition  of  Meris   Laboratories).   Unilab  intends  to  selectively  seek
acquisitions  designed to result in cost  savings and other  benefits  resulting
from the elimination or reduction of (i)  redundancies in testing  equipment and
personnel,  (ii)  overlapping  courier routes,  (iii)  overlapping PSCs and STAT
laboratories,  (iv)  duplicative  administrative  personnel  and  (v)  redundant
marketing  efforts and  personnel.  The Company  seeks to achieve  consolidation
efficiencies within six months after completion of an acquisition.

Meris Acquisition

                 On  September  16,  1998,   the  Company  signed  a  definitive
agreement  to acquire  substantially  all of the  assets of Meris  Laboratories,
Inc.,  one  of  the  leading  regional  independent   laboratories  in  Northern
California with run-rate revenue of approximately $25.2 million. Meris had filed
for bankruptcy  protection  under Chapter 11 in November  1997. The  transaction
closed on November 5, 1998.

                 The gross  purchase  price  paid for  Meris  was $16.5  million
(approximately 0.60x annual revenue),  consisting of a $14.0 million convertible
subordinated   note   (bearing   7.5%   interest,   convertible   under  certain
circumstances  at  $3.00  per  share)  and the  assumption  of $2.5  million  in
additional  liabilities  (to be paid in equal  installments of $35,000 per month
over 72  months).  In  addition  to the  customer  list,  the  Company  acquired
approximately  $4.0 million of assets, the majority of which were trade accounts
receivable.

                 Within  approximately two months after closing the transaction,
the Company had substantially integrated the Meris business and realized much of
the significant synergies available in the consolidation.

The Clinical Laboratory Industry

Overview and Trends

                 Unilab  believes based on published  industry  reports that the
total U.S. clinical  laboratory market during 1998 was approximately $30 billion
in annual revenue, of which the California market accounted for approximately $4
to $4.5  billion.  Even  after  years of  industry  consolidation  the  clinical
laboratory  market  nationally,   and  particularly  in  California,  is  highly
fragmented  and  composed  of  three  segments:   (i)  laboratories  located  in
hospitals;  (ii) laboratories located in physicians' offices and physician-owned
laboratories;  and (iii)  independent  clinical  laboratories.  Industry sources
estimate that there are currently fewer than 4,500 independent  clinical labs in
the United  States,  with as many as 600  located  in  California.  The  Company
believes  that  approximately  55% of clinical  laboratory  testing  revenues in
California result from tests performed by hospitals, 15% from tests performed by
physicians in their offices and physician-owned  laboratories and 30% from tests
performed  by   independent   laboratories.   The  Company   believes  that  the
consolidation  trend of the last several years is likely to continue,  resulting
in fewer independent clinical labs both nationally and in California.
<PAGE>

                 Clinical laboratory testing continues to be an integral part of
the  delivery  of health care  services in the United  States due to a number of
factors, including: (i) the aging of the U.S. population, resulting in increased
utilization of testing services; (ii) an increase in the number of routine tests
and esoteric tests due to advances in technology and scientific knowledge; (iii)
increased  automation in testing  procedures  due to the  development  of highly
automated   laboratory   testing   equipment   which  has  resulted  in  greater
efficiencies in testing  operations;  (iv) increased  awareness among physicians
and the general  public  concerning  the  importance of preventive  medicine and
early  detection;  and (v)  increased  use of tests by  physicians as protection
against potential  malpractice suits. Unilab believes that there will be further
opportunities  for independent  laboratories to capture certain testing from the
market  currently  served by  hospital  and  physician  office  laboratories  by
focusing on the cost and service advantages which large independent laboratories
like Unilab have with respect to high volume,  non-emergency  testing.  However,
the number of clinical  laboratories  has declined as hospitals  and  physicians
have exited the clinical  laboratory  business and consolidation has occurred in
the  independent  laboratory  segment.  Moreover,  as a result of certain recent
required  changes  in the  billing  and  collecting  of  Medicare  and  Medicaid
payments, more detailed procedures have been required,  complicating the billing
and collection process and making such processes more expensive.

California Market

                 California  is the single  largest  state  clinical  laboratory
market in the U.S., accounting for approximately 13% of the country's laboratory
testing  revenues.  The Company  believes that  consolidation  in California has
occurred and will  continue  for reasons  similar to those which have caused the
industry  nationwide to  consolidate,  such as: (i) the cost of compliance  with
increasingly  stringent  regulatory  requirements;  (ii) the  cost  efficiencies
afforded  by  large-scale  automation  of  routine  testing;  (iii)  legislative
developments,  such as restrictions on physician self-referrals and ownership of
laboratories;  (iv) reductions in Medicare and other third-party reimbursements;
(v) the growth of HMOs and other  managed  care groups which  require  efficient
testing services from high-capacity laboratories; (vi) the increasing demand for
sophisticated  equipment  and  management  information  systems  that tend to be
prohibitively expensive for small laboratories;  and (vii) the competition for a
limited supply of qualified laboratory personnel. The Company has focused on the
California clinical  laboratory market because of (1) its size and density,  (2)
the high degree of fragmentation  and prospects of continued  consolidation  and
(3)  Unilab's  current  leadership  position in the market and the  prospects of
leveraging this status across the state.

Strategy

                 Unilab's objective is to build upon its position as the largest
and low cost provider of clinical laboratory testing services in California both
to provide quality and valued services to its customers and to earn a profitable
return for its stake-holders. The Company's business strategy for achieving this
objective  is to  maintain  superior  quality  and  service,  provide  ancillary
services commensurate with the value which its customers place on them, maintain
its position as a low cost provider,  conduct its billing and business practices
in an appropriate, efficient, effective, and responsible manner and grow through
organic growth and acquisitions.  Similar to the actions taken in 1997 and 1998,
the Company also intends to closely monitor and, where  appropriate,  reduce its
expense base, while  simultaneously  taking steps to increase its revenue stream
through higher pricing and selected acquisitions.
<PAGE>

Governmental Regulation

                 Numerous aspects of Unilab's operations,  including its testing
processes,  its business practices and in some instances, the amount and methods
by which it is paid,  are subject to  governmental  regulation  at the  Federal,
state and/or local levels.

Federal and State Clinical Laboratory Licensing

                 All clinical laboratories  operating in the United States, with
limited  exceptions,  are required to obtain Federal  certification  pursuant to
CLIA and its implementing regulations.  The law and its implementing regulations
impose,  as conditions  for such  certification,  requirements  relating to test
processes,  personnel qualifications,  facilities and equipment,  recordkeeping,
quality control, quality assurance and participation in proficiency testing. The
same regulatory  requirements  also apply as conditions for participation in the
Medicare  and  Medicaid  programs.   CLIA  regulations  vary  depending  on  the
complexity  of the  methodologies  performed by the  laboratory.  Compliance  is
verified  by  periodic  on-site  inspections.  Sanctions  for  failure  to  meet
CLIA/Medicare  certification  requirements  include  suspension or revocation of
certification,  criminal penalties,  injunctive actions to close the laboratory,
civil  penalties or imposition of specific plans of correction to remedy alleged
deficiencies.

                 Licensing  requirements  similar to those  imposed  pursuant to
CLIA also apply at the state level,  with similar  sanctions for  noncompliance.
Effective January 1, 1996,  California Senate Bill 113 ("SB 113") became law and
amended the California  laws  governing  clinical  laboratories  to make them at
least as stringent  as CLIA was as of January 1, 1994.  Since Unilab must comply
with CLIA in any event, SB 113 has had little  practical  effect on the Company.
This   law   could,   however,   impose   additional   regulatory   burdens   on
California-based  physician  office  laboratories  ("POL's") by  increasing  the
responsibilities of directors at POL's for oversight and supervision. In each of
the past two  Congresses,  however,  legislation  has been  introduced,  but not
passed,  to exempt POLs from CLIA. Such legislation has again been introduced in
the current  106th  Congress  in February  1999.  Moreover,  in 1999  California
received deemed  equivalency  status under CLIA, which is formal  recognition by
the federal government that California quality  requirements meet or exceed CLIA
levels.

                 Additionally,   in  California  specific   proficiency  testing
participation  is required for those  laboratories,  like  Unilab,  that perform
testing to detect the  presence  of the human  immunodeficiency  virus  ("HIV").
Notwithstanding compliance costs, Unilab regards these licensing requirements as
beneficial  to the  industry  and  favorable  to its  business  because the CLIA
certification requirements apply not only to independent laboratories but to all
clinical  laboratories,   with  only  narrow  exceptions  for  those  facilities
performing a limited number of simple procedures.

Federal and State Billing and Fraud and Abuse Laws

                 The Federal Medicare laws impose specific billing  requirements
on  clinical  laboratories.  Generally,  laboratories  are  required to bill the
Medicare  program  directly  rather than billing  physicians  or  beneficiaries.
Exceptions to this "direct billing" requirement permit a referring laboratory to
bill Medicare for testing performed by another laboratory if at least 70% of the
tests for which the referring  laboratory  receives  requisitions  are performed
on-site.  This  so-called  "shell  lab"  exception  is  expected  to benefit the
independent  laboratory  industry by  limiting  incentives  for  physician-owned
laboratories.
<PAGE>

                 Additionally, a wide array of Medicare/Medicaid fraud and abuse
provisions apply to those clinical laboratories participating in these programs.
These laws prohibit,  among other things,  (i) the submission of false claims or
false information to the programs,  (ii) deceptive or fraudulent conduct,  (iii)
the  provision  of excessive  or  unnecessary  services or services at excessive
prices  and (iv) the offer or receipt of  broadly  defined  inducements  for the
referral of Medicare,  Medicaid or other federal health care program patients or
business.  Penalties for violations of these Federal laws include exclusion from
participation  in  the  Medicare/Medicaid  programs,  asset  forfeitures,  civil
penalties and criminal  penalties.  Civil penalties for a wide range of offenses
may be up to $10,000  per item and treble  the  amount  claimed.  In the case of
certain severe offenses,  exclusion from  participation in Medicare and Medicaid
is a  mandatory  penalty.  These  fraud and  abuse  provisions  are  interpreted
liberally and enforced  aggressively  by the various  enforcing  agencies of the
federal government.

                 Several Federal agencies are charged with the responsibility of
investigating  allegations  of  fraudulent  and  abusive  conduct by health care
providers. These agencies include, without limitation, the Department of Justice
("DOJ"),  Federal  Bureau of  Investigation  ("FBI") and the Office of Inspector
General  ("OIG")  of the  Department  of  Health  and  Human  Services  ("HHS").
Additionally,  Medicare  carriers and Medicaid  state  agencies now have certain
fraud and abuse control  authority.  According to public  statements by the DOJ,
health care fraud has been elevated to the  second-highest  priority of the DOJ,
and FBI agents  have been  transferred  from  investigating  counterintelligence
activities  to health  care  provider  fraud.  The OIG also is  involved in such
investigations  and has,  according to recent OIG Work Plans,  targeted  certain
laboratory practices for study,  investigation and prosecution.  Pursuant to one
such project in the fiscal 1992/1993 Work Plan, entitled "Laboratory  Unbundle,"
laboratories that offer packages of tests to physicians and "unbundle" them into
"several tests to get higher  reimbursement  when billing Medicare and Medicaid"
were to be identified  and "suitable  cases will be presented for  prosecution".
Under another project in the fiscal 1992/1993 Work Plan, laboratories "that link
price discounts to the volume of physician referrals,  `unbundle' tests in order
to bill Medicare at a higher total rate, and conduct unnecessary tests, ... will
be  identified  to  coordinate  investigations  throughout  the  country".  Such
projects culminated in the industry-wide  governmental "LabScam"  investigations
that  began in 1998 and that have  resulted  in  approximately  $800  million of
aggregate  settlement  payments being made by a number of  independent  clinical
labs in the past several years. The LabScam investigation appears to be ongoing.

                 The OIG's fiscal year  1994/1995 Work Plan also targeted a wide
range of clinical  laboratory  practices for study and investigation.  In fiscal
years 1994-1995,  the OIG planned to "continue to investigate potential fraud in
Part B of the Medicare  program",  targeting  certain  specific areas  including
"laboratory  fraud".  In October 1994 the OIG issued a "Fraud  Alert"  targeting
certain specific practices in the clinical  laboratory  industry,  including the
provision  of  free  computers  or fax  machines  to  ordering  physicians;  the
provision of free laboratory  testing for health care providers,  their families
and  employees;  the  provision  of  phlebotomy  services  to  physicians;   the
collection by laboratories of bio-hazardous  waste from physician  offices;  and
certain  other  practices.  The  Fraud  Alert,  entitled  "Arrangements  for the
Provision  of  Clinical   Laboratory   Services,"  was  disseminated  widely  to
physicians and other providers of Medicare/Medicaid  services. In this document,
the OIG asked  persons who become  aware of any of the  identified  practices to
contact  OIG  Regional  Offices  around the U.S.  Additionally,  the Fraud Alert
announced the OIG's plan to "actively  investigate  and prosecute" the practices
described in the document.
<PAGE>

                 The OIG's  1996/97  Work Plan also  proposed  targeting  a wide
range of laboratory practices for investigation, including HCFA's enforcement of
CLIA;  duplicate claims from physician  office and independent  laboratories for
the same tests; and billing by hospital laboratories for outpatient services. In
addition,  in 1997 the OIG  released  a "Model  Compliance  Plan"  for  clinical
laboratories,  which set out certain  voluntary  standards  laboratories were to
follow to comply  with  federal  fraud and abuse  laws.  The OIG  reissued  this
compliance guidance document in slightly revised form in 1998.

                 The OIG's 1997/98 Work Plan again identified various laboratory
practices for evaluation and  investigation.  These include a follow-up audit of
hospital  outpatient  billing for chemistry,  hematology  and  urinalysis  tests
covered by a previous investigation;  scrutiny of the enforcement of the Stark I
physician/laboratory  self-referral  ban to ensure that enforcement is adequate;
evaluating the enforcement of CLIA to make sure that it is adequate; and a study
of trends in  laboratory  test  utilization  to  identify  possible  utilization
controls.

                 The OIG's April 1,  1998-September  30, 1998 Semi-annual Report
reported  that the OIG  successfully  completed  several  civil cases related to
fraudulent  billing by clinical  laboratories  to  Medicare,  Medicaid and other
federal health care  programs,  and that the OIG also obtained  convictions  and
settlements  for other types of fraudulent or abusive  activities on the part of
laboratories.  The Report describes one particular case that, in the OIG's view,
was  "one of the most  reprehensible  cases  involving  fraudulent  billing  for
laboratory tests." (OIG Semi-Annual Report,  April 1, 1998-September 30, 1998 at
25.) In this  case,  according  to the  Report,  a  laboratory  unbundled  blood
chemistry  tests  and  billed  Medicare  for  thousands  of tests  that were not
medically necessary during a nine-year period receiving $5.0 million in Medicare
overpayments.  The Report stated that this laboratory  agreed to pay $15 million
to resolve this liability.

                 In its Fiscal Year 1999 Work Plan, the OIG targeted  laboratory
tests  provided  to  End  Stage  Renal  Disease  (ESRD)  beneficiaries  for  two
nationwide reviews: one concerning inappropriate separate billing for laboratory
tests included in the ESRD composite rate, and the other  concerning the medical
appropriateness  for such tests.  The FY 1999 Work Plan also announced a project
to analyze HCFA's enforcement of Medicare's  physician/laboratory  self-referral
prohibition (see discussion below).

                 In addition to these  recent OIG  initiatives,  HHS  anti-fraud
initiatives  launched  in  1999  include  a  comprehensive   anti-fraud  program
announced by HCFA in February 1999. In this initiative,  HCFA will take numerous
steps to enhance the fraud  detection and  enforcement  elements of its Medicare
and Medicaid program  administration,  including  implementation of the Medicare
Integrity  Program,  a program created by the Health  Insurance  Portability and
Accountability Act of 1996 ("HIPAA") to enhance the anti-fraud activities of the
contractors  that  administer  the Medicare  program.  The 1999 HCFA  anti-fraud
initiative  responds in part to a recent OIG report estimating that, in 1998, 7%
of Medicare claims were billed improperly or erroneously.

                 In addition, a Federal "self-referral" law commonly referred to
as the "Stark" law prohibits  Medicare payments for laboratory tests referred by
physicians who (personally or through a family member) have a financial interest
(including "ownership interests" and "compensation arrangements") in the testing
laboratory.  There are certain exceptions,  the most significant being in-office
testing personally performed by or under the supervision of the physician or the
group practice to which the physician belongs.  Another exception would permit a
physician to refer  specimens to a laboratory  owned by a company,  the stock of
which is traded on a public  exchange and which has  shareholders'  equity of at
least $75  million  in the most  recently  completed  year or an  average of $75
million  over the prior  three  years even if the  physician  owns stock of that
company.  Sanctions for laboratory  violations of the prohibition include denial
of Medicare  payment,  refunds,  civil money penalties of up to $15,000 for each
service billed in violation of the  prohibition  and exclusion from the Medicare
program. These restrictions, which became effective January 1, 1992, may benefit
the  independent  clinical  laboratory  industry by restricting  physicians from
"self-referring"  Medicare testing to physician-owned entities. As of January 1,
1995,  as a result of the  adoption  of the "Stark II" law,  these  restrictions
applied to  Medicaid-covered  services and to certain additional  diagnostic and
therapeutic  "designated  health  services",  as  well,  with  similar  expected
benefits for the independent laboratory industry.  Regulations  implementing the
Stark I Law were published August 14, 1995. Proposed  regulations  to implement
the Stark II Law were  published  January 9, 1998.
<PAGE>

                 The 1995 House  Medicare  reform  proposal  contained,  and the
House-Senate   report   adopted,   provisions   that  would  have,   if  passed,
significantly  narrowed the scope of the Stark anti-referral laws. That proposal
would have ended the ban on  physician  referrals to  laboratories  based on any
"compensation arrangements" between the lab and the physician. Such compensation
arrangements would have remained subject to the federal  anti-kickback laws. The
President vetoed this bill on December 5, 1995. The President's  Medicare reform
proposal  would  not have  narrowed  the  scope of the  Stark  laws.  While  the
proposals  to  narrow  the  scope of the  self-referral  law were not  passed in
1995-1998, it is possible that similar proposals could be introduced in Congress
in 1999.

                 In 1996,  Congress  passed and the  President  signed  into law
HIPAA,  frequently  referred  to  as  the  "Kennedy-Kassebaum  Act",  after  its
principal Senatorial  sponsors.  The law made major changes in federal fraud and
abuse laws  applicable to health care  providers.  It  established a new federal
program designed to coordinate federal,  state and local fraud and abuse control
programs.  The  law  permitted  the  DOJ  and  the  OIG to  conduct  audits  and
investigations  relating to the  delivery  of health care in the United  States,
without  limitation to Medicare and Medicaid,  and established a Fraud and Abuse
Trust Fund.  HIPAA also  mandated  the  creation of a new safe harbor  under the
anti-kickback law that is to apply to remuneration paid or received by a managed
care organization,  where there is a written agreement that places the entity at
substantial  financial  risk for the cost or utilization of health care services
provided.  HIPAA also expanded the federal  antikickback  law so that it applies
not only to  situations  involving  Medicare  and  Medicaid,  but to almost  all
federally funded health care programs.  In addition,  the law for the first time
permits providers to obtain advisory opinions from the government concerning the
legality of certain contemplated  practices under the anti-kickback law; the OIG
published  regulations  implementing  this advisory  opinion mandate in February
1997 and amended  those  regulations  in 1998.  The  Kennedy-Kassebaum  law also
significantly  increased  the  penalties  for certain  civil  violations  of the
Medicare law and increased  the types of offenses for which a provider  could be
excluded from  Medicare/Medicaid.  Finally,  the law established a number of new
criminal provisions applicable to health care fraud.

                 The Balanced  Budget Act of 1997 ("BBA '97") contains  numerous
changes  in  Medicare/Medicaid  fraud and  abuse  provisions.  BBA '97  requires
permanent  exclusion  from Medicare and Medicaid for persons  convicted of three
health  care-related crimes and a 10-year exclusion period for persons convicted
of certain  offenses who have one previous  conviction.  The statute permits the
Secretary of HHS to refuse to enter into Medicare participation  agreements with
individuals  or  entities  that have been  convicted  of  felonies.  The new law
further  permits the  exclusion  from Medicare and Medicaid of an entity that is
controlled  by a family  member of an  individual  who has incurred  Medicare or
Medicaid  sanctions,  where such  sanctioned  individual  transferred his or her
ownership or control interest in the entity in anticipation of, or following,  a
conviction,  money penalty or exclusion from the program.  In addition,  BBA '97
expands the reach of Medicare/Medicaid civil money penalties to apply to persons
who arrange or contract  with  excluded  persons  for the  provision  of covered
services.  Further,  the  statute  includes a provision  permitting  civil money
penalties  of up to  $50,000  per  violation  for  certain  specified  types  of
violations,  plus damages equal to three times the total amount  offered,  paid,
solicited or received,  for  violations of the  Medicare/Medicaid  anti-kickback
statute.  Finally,  BBA '97  requires  the  Secretary  of HHS to issue  advisory
opinions  regarding  potential  violations  of  the  Stark  II  law  prohibiting
Medicare/Medicaid  physician self-referral for designated health services (other
than  laboratory  services).  The Health Care  Financing  Administration  (HCFA)
published regulations implementing this advisory opinion provision on January 9,
1998.
<PAGE>

                 The  LabScam   investigation   and  settlements   have  spawned
additional   federal   lawsuits   brought  by  private  parties   (insurers  and
individuals) under the Racketeering  Influenced Corrupt Organization Act (RICO),
which permits the recovery of treble  damages.  At least two lawsuits were filed
under this statute against major clinical laboratories during 1997.

                 It should be noted  that,  among  the many  federal  provisions
available to enforcement authorities in connection with health care offenses, an
especially potent remedy is exclusion from Medicare,  Medicaid and other federal
health care  programs.  Particularly  significant  is the  permissive  exclusion
authority  of the OIG,  the  principal  threat  that has brought  many  clinical
laboratories to the settlement table in the LabScam  operation.  On December 29,
1997, the OIG released  non-binding  guidelines  indicating the criteria it will
use in  making  permissive  exclusion  decisions.  These  criteria  address  the
circumstances  and  seriousness  of the  offense,  the  defendant's  response to
allegations,  the likelihood of reoccurrences  of the same or similar  offenses,
and whether the  provider  can  continue  participating  in federal  health care
programs  without a real  threat of  bankruptcy  or to its  ability  to  provide
quality care.

                 At the state  level,  laboratory  operations  are  affected  by
billing  requirements  applicable to all laboratory services and state fraud and
abuse and anti-inducement  laws that similarly apply to all laboratory services.
California,  where the Company conducts almost all of its business,  has adopted
especially stringent laws of this type,  including an expansive  anti-inducement
law that is even broader than the federal law (Ca. Bus.  Prof.  Code ss.650) and
the  Physician  Ownership and Referral Act,  known as the "Speier  Bill",  which
became effective January 1, 1995 and which prohibits,  under most circumstances,
referrals of laboratory  testing business by physicians to laboratories in which
the  physician  has a "financial  interest".  Penalties  for  violation of these
provisions can include fines, criminal penalties and disciplinary action against
referring  physicians.  In addition,  California has adopted the "Calderon" law,
which prohibits  physicians from "marking up" laboratory  bills for lab services
the  physician did not perform.  The Company  believes the Calderon law benefits
independent    laboratories   by   reducing   the   financial   incentives   for
physician-owned laboratories.

                 In  August  1993,  Unilab  received  a  subpoena  from  HHS  in
connection  with an  investigation  and internal review relating to the possible
submission of false or improper claims under the Medicare and Medicaid programs.
The HHS subpoena  required  production of a broad range of documents,  including
those  relating to Unilab's  selling,  pricing  and billing  practices.  The HHS
subpoena concerned fourteen tests, including five tests that were the subject of
the civil  claims  settlements.  See "Legal  Proceedings--Department  of Justice
Settlement". Unilab completed production of these documents in February 1994.
<PAGE>

                 In August 1995, the Company received a subpoena from HHS
requesting certain information with respect to the Company's marketing and
billing practices for a complete blood count (CBC), a diagnostic test which was
not included in any prior subpoena or the subject of any of the settlements
entered into by the Company in September 1993 (the "Settlements").  See,
"Legal Proceedings-Department of Justice Settlement". Unilab promptly completed
production of all documents in response to the HHS subpoena and cooperated
fully in the HHS investigation.  The Company reached an agreement with the
Federal government in September 1996 to pay $4.0 million to conclude this
investigation.  The Company has one remaining payment, excluding interest, to
the U.S. Government of approximately $324,000 due on September 1, 1999.  In
addition, in October 1996, the Company paid the California MediCal program
approximately $160,000 to settle all their claims regarding the same issue.
The settlements did not constitute an admission by the Company with respect to
any allegation, issue of law or fact arising from the investigation and the
Company received a full civil and administrative release from all claims by the
government with respect to these billings through the date of the settlement
agreement.

                 In November  1998,  Unilab  acquired  substantially  all of the
assets of Meris Laboratories, Inc. At that time, Meris had a corporate integrity
agreement (CIA) with the OIG arising from the settlement of claims against Meris
asserted by the United States in connection with its LabScam investigations.  As
part of Unilab's  purchase of the Meris assets and in lieu of assuming the Meris
CIA,  Unilab  voluntarily  entered  into an  agreement  with  the  OIG  entitled
"Compliance Program Disclosure Agreement" (the "Unilab/OIG Agreement"). Pursuant
to this Agreement  Unilab will maintain its hotline,  undertake  special billing
audits of the  former  Meris  facilities,  obtain  new CLIA  certifications  and
provider  numbers  for  the  former  Meris   facilities,   and  provide  certain
information  to the OIG. The  Unilab/OIG  Agreement will last until February 28,
2000.

Professional Ethics

                 The  American  Medical  Association's  (AMA's)  view  regarding
referrals by physicians to businesses in which they hold ownership  interests is
that "in general, physicians should not refer patients to a health care facility
outside  their  office  practice at which they do not  directly  provide care or
services when they have an investment  interest in the facility".  Under the AMA
guidelines physicians are expected to refer patients to independent laboratories
rather than to laboratories in which they have an investment  interest.  The AMA
guidelines do not have the force of law. The management of Unilab  believes that
such AMA policy against physician  self-referrals  may have a positive effect on
Unilab by further facilitating referrals away from physician-owned  laboratories
to independent laboratory concerns such as Unilab.

Reimbursement

                 Medicare reimbursement for clinical laboratory services is made
pursuant to Medicare  fee  schedules,  subject to a national  limitation  amount
("cap") that is based upon the median of all the Medicare fee schedules.  During
the late 1980s and the 1990s,  that cap dropped  from 115% of the median to 100%
of the median,  to 93% of the median, to 88% of the median, to 84% of the median
to 80% of the median to 76% of the median and  effective  January 1, 1998 to 72%
of the median.  BBA '97 provides for a freeze on fee schedule  payments for 1998
through 2002. The President's FY2000 budget proposes a reduction of the Medicare
fee  schedule  caps to 74% of the  laboratory  fee schedule  medians,  beginning
January 1, 2000.  It is too early to predict how  Congress  will respond to this
proposal.  In  addition,  an expert  panel  considering  changes in Medicare has
proposed  reinstatement  of  beneficiary  cost sharing for  diagnostic  clinical
laboratory  services  provided  to Medicare  patients,  although it is not known
whether the full Medicare  Commission will agree to this proposal or whether any
congressional action will be taken with regard to it.
<PAGE>

                 BBA '97 included a provision  that allows the  Secretary of HHS
to  implement  up  to  five  demonstration  projects  to  establish  competitive
acquisition  areas for Part B  services,  including  laboratory  services.  Each
project can be conducted in no more than three competitive acquisition areas and
can be operated over a three-year  period. The Secretary can limit the number of
contractors in a competitive  acquisition  area to the number needed to meet the
demand for services.  Where the Secretary  determines  after an evaluation  that
there is clear  evidence  that the project has resulted in a decrease in federal
expenditures  adversely  affecting or impacting access,  quality or diversity of
product selection,  the Secretary may expand the projects. BBA '97 also requires
the  Secretary  to  request  the  Institute  of  Medicine  to conduct a study of
laboratory  payments  to review the  adequacy  of the  current  methodology  and
recommendations  regarding  alternative  payment  systems.  This report is to be
completed   within  two  years.   The  new  law  also   includes  a  package  of
"administrative  simplification"  provisions for laboratory testing. Under these
provisions,  by July 1, 1999,  regional  carriers for not more than five regions
must be in  place  for  clinical  laboratories,  and by  January  1,  1999,  the
Secretary  must  establish  uniform  rules in several  laboratory  policy  areas
through a negotiated  rulemaking process.  HCFA has requested Congress to repeal
the BBA's  requirement  concerning  regional carriers and, although Congress has
not yet  acted on that  request,  HCFA has  taken no  action  to  implement  the
provision;  thus, it is unlikely to be implemented by the July 1, 1999 deadline.
Further, a negotiating  rulemaking committee has met on a number of occasions to
propose some changes in laboratory  payment and billing  policies as mandated by
the  BBA,  but  those  proposals  have  not yet been  finally  agreed  to by the
committee.  Once  agreed to by the  committee,  they must still be issued in the
form of a Notice of Proposed  Rulemaking by HCFA;  thus, it is likely to be some
time before any action is expected  with  regard to the  committee's  proposals.
Finally, effective July 1, 1998, Medicare Part B laboratory services (other than
physician  services)  provided to residents of nursing facilities must be billed
directly to the nursing  facility,  and payment  will flow from  Medicare to the
nursing facility and the nursing facility to the laboratory.

                 Current Procedural Terminology ("CPT") codes form the basis for
the  coding  of  tests  billed  to  Medicare  and  Medicaid,  as well as to some
third-party  payors,   and,  thus,  coding  changes  may  substantially   affect
reimbursement  levels. CPT codes are periodically revised by the AMA. One of the
areas of the CPT code revision that has most affected  laboratory  reimbursement
levels is a change in the codes that designate  panel and profile tests, so that
numerous panel codes have been eliminated entirely and those remaining have been
given specific definitions for constituent tests for the first time. This coding
change reduced laboratory  reimbursement for Unilab and the clinical  laboratory
industry generally. Other codes have been eliminated or superseded by new codes,
and codes have been added for new, previously uncoded procedures.

                 A  substantial  CPT  revision  effective  as of April  1,  1998
included  numerous  new and revised  individual  and panel test codes  affecting
several laboratory specialties. The most significant changes again concern panel
codes. The 1998 CPT revision replaced the 19 pre-existing multichannel chemistry
profile codes with four  "clinically  relevant" test panels.  Effective April 1,
1998,  HCFA  directed  that  laboratories  could no longer bill Medicare for the
multichannel  chemistry  profiles,  but must use the new  "clinically  relevant"
panels  exclusively.  This  change  appears  to have had an  adverse  effect  on
revenues and  operating  costs of the clinical  laboratory  industry,  including
Unilab.  Further  changes  were made in the CPT  manual for 1999,  including  an
expansion  by  one  test  of  one of the  "clinically  relevant"  panels.  It is
currently unclear what affect, if any, this change will have on Unilab.

                 Additionally,  laboratory  pricing  practices  in general  have
received substantial  scrutiny from the Federal government.  Under its "LabScam"
inquiry,  the federal  government,  through numerous of its agencies,  including
DOJ, OIG, FBI and HCFA, has investigated the sales and billing practices of many
of  the  country's  independent  clinical   laboratories.   A  number  of  these
laboratories,  including Damon Clinical Labs,  Corning  Clinical Labs (now Quest
Diagnostics),  Laboratory  Corporation of America Holdings,  Physicians Clinical
Laboratory, Meris Laboratories and SmithKline Beecham Clinical Laboratories,  as
well as the Company,  have in recent  years  entered  into  agreements  with the
government to settle the  government's  allegations  of  wrongdoing,  in certain
cases for  hundreds  of millions of dollars.  Additionally,  the  government  is
pursuing criminal investigations and prosecutions of certain former employees of
lab  companies  in  connection  with  allegedly  fraudulent  sales  and  billing
practices.
<PAGE>

Drug Testing

                 Drug  testing for public  sector  employees is regulated by the
National  Institute  on Drug  Abuse  ("NIDA"),  which has  established  detailed
performance  and quality  standards that  laboratories  must meet in order to be
approved to perform drug testing on employees of the Federal government, Federal
government  contractors  and certain other  entities.  To the extent that Unilab
performs such testing, it must be certified as meeting NIDA standards.  Unilab's
Tarzana (Los Angeles) laboratory is NIDA-certified.

Occupational Safety

                 In addition to its  comprehensive  regulation  of safety in the
workplace,  the Federal Occupational Safety and Health  Administration  ("OSHA")
has adopted rules that  establish  extensive  requirements  related to workplace
safety for health care employers, including clinical laboratories, whose workers
may be exposed to bloodborne pathogens.  These regulations,  among other things,
require work practice  controls,  protective  clothing and equipment,  training,
medical follow-up, vaccinations and other measures designed to minimize exposure
to, and  transmission of,  bloodborne  pathogens such as HIV and the hepatitis B
virus. OSHA has also adopted rules establishing  safety requirements for the use
of chemicals as reagents and for other purposes.

                 At the state level,  California imposes occupational safety and
health  requirements  administered  by the  California  Occupational  Safety and
Health Administration.

Food and Drug Regulation

                 The Federal Food and Drug  Administration  ("FDA")  administers
laws that require  pre-marketing  approval for medical  devices,  including test
kits used in performing clinical laboratory procedures.  The FDA's pre-marketing
approval  requirements  can affect  the  availability  of test kits to  clinical
laboratories such as Unilab.

Controlled Substances

                 The use of controlled  substances in testing for drugs-of-abuse
is regulated by the Federal Drug Enforcement Administration.

Specimen Transportation

                 Regulations  of the  Department of  Transportation,  the Public
Health Service,  and the Postal Service apply to the  transportation of clinical
laboratory specimens.

<PAGE>

Radioimmunoassay Testing

                 Radioimmunoassay  testing,  which is  performed  by  certain of
Unilab's  laboratories,  is subject to  regulation  and licensing by the Federal
Nuclear Regulatory Commission.

Other Legislation

                 BBA `97  included  several  provisions  in  addition  to  those
discussed  above that could affect  clinical  laboratory  operations  and/or the
reimbursement  for  clinical  laboratory  services.   These  include  provisions
intended to expand the  penetration  of managed  care in the  Medicare  program;
mandates for Medicare to replace cost  reimbursement  with  prospective  payment
systems for hospital  outpatient  services,  home health care services,  skilled
nursing facility  services,  and others;  and an expansion of public health care
coverage  for certain  uninsured  children  not already  covered by Medicaid and
other pre-existing public health programs.

Environmental Compliance

                 As  with   all   clinical   laboratories,   each  of   Unilab's
laboratories  must comply with the  provisions  of numerous  federal,  state and
local statutes and  regulations  relating to public health and the  environment,
including: practices and procedures regarding the proper storage and labeling of
hazardous and toxic materials or other substances  associated with the operation
of clinical  laboratories and the proper management of medical waste,  hazardous
waste and  low-level  radioactive  waste  generated  by  operation  of  clinical
laboratories;  public  disclosure  requirements  regarding certain hazardous and
toxic  materials or other  substances  associated with the operation of clinical
laboratories;  employee  training  and  notification;  environmental  protection
requirements, such as standards relating to the discharge of pollutants into the
air, water and land; emergency response and remediation or cleanup in connection
with hazardous and toxic materials or other substances associated with operation
of  clinical  laboratories;   operation  and  remediation,   if  necessary,   of
underground  storage tank sites;  the removal,  encapsulation  or disturbance of
asbestos-containing  materials  when such  materials are in poor condition or in
the event of construction,  remodeling,  renovation or demolition of a building;
and other safety and health standards.

                 As  regulated  entities,  Unilab's  facilities  are  subject to
compliance  investigations  from numerous  governmental  agencies.  From time to
time, such  inspections have resulted in a notice of violation being issued to a
laboratory in connection with certain regulatory requirements,  e.g. labeling of
regulated substances.  In each such case, Unilab has responded to the inspecting
agency and the alleged  violation has been  addressed  without the imposition of
substantial  fines or  penalties.  Unilab  is not  aware of any past or  present
violation  which it believes  could have a material  adverse effect on Unilab or
its financial conditions or results of operations.

Competition

                 The independent clinical laboratory industry in the U.S. and in
California is highly  fragmented and is  characterized  by intense  competition.
According to HCFA, there are in the neighborhood of 4,500  independent  clinical
laboratories in the U.S.,  approximately  600 of which the Company  believes are
located in California.  These  independent  clinical  laboratories fall into two
separate  categories.  The  first  are  the  smaller,  local  laboratories  that
generally  offer fewer tests and  services and have less capital than the larger
laboratories. These laboratories seek to differentiate themselves by maintaining
a close working  relationship  with their physician  clients by providing a high
level of personal and localized services.
<PAGE>

                 The second group,  which includes  laboratories such as Unilab,
consists of the larger regional or national  laboratories that provide a broader
range of tests and services.  In California,  Unilab's three largest independent
clinical  laboratory  competitors are SmithKline Beecham Clinical  Laboratories,
Inc., Bio-Cypher Laboratories,  Inc., and Laboratory Corporation of America. The
Company  believes  that it currently  has  approximately  20% of the  California
independent  clinical  laboratory  testing  market,  roughly  twice  that of its
nearest competitor and, the Company believes,  approximately quadruple the share
of its second and third largest competitors.

                 Unilab  competes  primarily  on the basis of the quality of its
testing,  reporting  and  information  services,  its  reputation in the medical
community,  price, the introduction of new testing procedures and its ability to
perform a comprehensive  range of tests.  Competition for qualified personnel is
also  intensifying  as  statutory  requirements  for the  licensing of personnel
become more stringent.  Unilab believes that its extensive California facilities
provide easy access to its clients and quick reporting of results at competitive
prices.  It is  expected  that  Unilab will be able to provide the full range of
required  testing,  either through its own testing  capabilities or by utilizing
outside reference testing services contracted from third parties.

Employees

                 As of December 31, 1998,  Unilab employed  approximately  2,600
full- and  part-time  employees,  none of whom were under  union  contract.  The
Company believes that its relations with employees are good.

Seasonality

                 The Company's  operations  experience  seasonal  trends that it
believes affect all clinical  laboratory  companies.  Testing volume tends to be
lower during  holiday  seasons and  inclement  weather.  As a result,  because a
substantial  portion of the  Company's  expenses are  relatively  fixed over the
short  term,  Unilab's  operating  income as a  percentage  of revenue  tends to
decrease during the fourth quarter of each year, mainly due to the Christmas and
Thanksgiving holidays.

CAUTIONARY STATEMENT FOR PURPOSES OF THE "SAFE HARBOR" PROVISIONS OF THE PRIVATE
SECURITIES LITIGATION REFORM ACT OF 1995

         The Private  Securities  Litigation Reform Act of 1995 (the "Litigation
Reform  Act")  provides  a  "safe  harbor"  for  forward-looking  statements  to
encourage  companies to provide  prospective  information  about their companies
without  fear  of  litigation,  provided  those  statements  are  identified  as
forward-looking  and  are  accompanied  by  meaningful   cautionary   statements
identifying  important  factors  that  could  cause  actual  results  to  differ
materially  from those  projected  in the  statement.  Accordingly,  the Company
hereby identifies the following important factors that could cause the Company's
actual financial or operating results to differ materially from those projected,
forecast or estimated by the Company in forward-looking statements.

         The Company wishes to caution  investors that the following factors are
hereby  identified  as  potentially  important  factors  that  could  cause  the
Company's actual financial or operating  results to differ materially from those
projected,  forecast or estimated by the Company in  forward-looking  statements
contained in this Form 10-K.
<PAGE>

(a)       Adverse actions by governmental or other  third-party  payors,
          including   Medicare  and   Medicaid,   including   unilateral
          reduction  of fee  schedules  payable to the Company  (such as
          that proposed in President Clinton's fiscal year 2000 budget).

(b)       The  impact  of  the  Company's  compliance  with  Medicare  and 
          Medicaid  administrative  and  legal  policies,   including,
          specifically,  but without limitation,  the requirements  by Medicare
          carriers that physicians  provide  diagnosis (ICD-9)  codes  for
          certain  tests in order  for such  tests to be  deemed  "medically
          necessary"  and,  therefore, reimbursed;  the policy of HCFA to
          eliminate  Medicare  reimbursement for tests contained in certain
          commonly ordered automated  multichannel  chemistry  panels (CPT
          Series  80002-80019)  and the replacement of such panels in 1998 with
          four clinically relevant test groupings;  reimbursement based on
          demonstrable "medical necessity"; and, in connection with such
          "medical  necessity" issues and  compliance-related  recommendations
          made by governmental  representatives (including the  recommendations
          made in the OIG Model Compliance Plan for Clinical  Laboratories, 
          as amended), the Company's introduction during 1998 of a new
          requisition form for ordering chemistry tests.

(c)       Adverse implications of the Company's introduction of a new
          requisition form to meet the requirements set forth in (b) above.

(d)       Impact of  changes  in payor  mix,  including  the shift  from
          traditional,   fee-for-service   medicine  to  managed   care,
          including the increased shift of MediCal  testing  business to
          managed care.

(e)       Failure to properly contain costs and expenses.

(f)       Failure to obtain new or retain existing customers at profitable
          pricing.

(g)       Adverse results from any new governmental  investigations,  or
          liability from acquired  companies that have had  governmental
          investigations,  including in particular  significant monetary
          damages  and/or  exclusion  from  the  Medicare  and  Medicaid
          programs and/or other significant litigation.

(h)       Computer or other system  failures  that affect the ability of
          the Company to perform tests,  report test results or properly
          bill customers, including the Year 2000 issue.

(i)       Inability to obtain professional  liability insurance coverage or a
          material increase in premiums for such coverage.

(j)       Denial of CLIA  certification or other licensure of any of the
          Company's  clinical  laboratories  under  CLIA,  by  HCFA  for
          Medicare and  Medicaid  programs or other  federal,  state and
          local agencies.

Item 2.          Properties

                 Unilab's  corporate  headquarters are located in leased offices
at 18448 Oxnard  Street,  Tarzana,  California  91356.  Unilab's  major regional
laboratories  are  located in the  following  metropolitan  areas:  Los  Angeles
(Tarzana), California; San Jose, California; and Sacramento, California.
<PAGE>

                 Unilab leases its  laboratory  facilities  and PSCs. All of the
major  laboratory  facilities  have been built or  improved  for the  purpose of
providing  clinical  laboratory  testing  services.  The  Company  believes  its
facilities are suitable,  adequate and have sufficient  production  capacity for
its operations as currently conducted and as anticipated to be conducted. Unilab
believes  that if it were to lose the lease on any of its  facilities,  it could
find alternate space at competitive  market rates and relocate its operations to
such new locations.

Item 3.          Legal Proceedings

                 Unilab is a party to various legal  proceedings  arising in the
ordinary  course of its  business.  Although the ultimate  disposition  of these
proceedings  is not  determinable,  management  does not  believe  that  adverse
determinations  in any or all of such  proceedings  will have a material adverse
effect upon the  financial  condition,  liquidity  or results of  operations  of
Unilab.

Department of Justice Settlement

                 In 1991, the DOJ contacted  Unilab  concerning an investigation
of certain of its sales, marketing,  pricing and billing practices. During 1993,
Unilab learned that a "qui tam" complaint had been filed approximately two years
earlier by a former employee.

                 A qui tam action, under the Federal "whistleblower" statute, is
a private  action  brought on behalf of the U.S.  government in connection  with
claims for payments submitted to the U.S. The private individual(s) bringing the
qui tam action  may be  entitled  to 15% to 30% of any  amounts  recovered  as a
consequence  of the qui tam action.  By law, the DOJ is required to  investigate
the matters raised by the qui tam complaint to determine  whether to "intervene"
(i.e.,  pursue the action  itself) or to permit the private  plaintiff to pursue
the action.

                 In  September  1993,  Unilab  entered into  settlements,  which
included  Corning  with  regard to its  subsidiary,  MetPath,  pursuant to which
Unilab  made  payments  to the DOJ (the  "DOJ  Settlement")  and to the State of
California (the "California  Settlement" and,  together with the DOJ Settlement,
the "Settlements") to settle certain civil claims relating to the investigation.
Unilab's  portion of the  Settlements  was  approximately  $3.0  million,  which
included  approximately  $2.2 million of the DOJ  Settlement and the entire $0.5
million amount of the California Settlement.

                 By their  terms,  the  Settlements  reserved  the rights of the
government agencies involved to pursue criminal  prosecutions in connection with
certain  related  claims.  Criminal  convictions  in these  matters  could  have
resulted in mandatory  exclusion  of the Company from  Medicare and state health
programs,  including Medicaid.  In May 1995, the Company was informed by the DOJ
that its criminal investigation  concerning the allegations at issue in the 1993
investigation and in the Settlements had been closed without prosecution.

                 The  Settlements  did not constitute an admission of wrongdoing
with respect to any issue of law or fact  arising from the civil action  brought
on behalf of the United States, that gave rise to the DOJ investigation. The DOJ
Settlement  addressed the U.S.  government's  contention  that Unilab  submitted
improper  Medicare claims for unnecessary blood tests with respect to five tests
(HDL, LDL, TIBC, PBG and serum ferritin) offered in conjunction with basic blood
chemistry   profiles.   The  California   Settlement   addressed  the  State  of
California's contention that improper MediCal claims were submitted with respect
to the same five tests.
<PAGE>

                 The  government's  allegations  involved a series of laboratory
tests  conducted  at the  time  on a  "sequential  multiple  analysis  computer"
("SMAC") for which Medicare reimbursed  laboratories on a flat fee basis for any
19 or more blood chemistry tests. The government alleged that some or all of the
five tests that were the subject of the  investigation  were added  routinely to
the SMAC for a "nominal" additional price or as part of annual  across-the-board
price increases to the physicians,  while the fact that Medicare would be billed
separately for each test at retail prices often was not revealed to the doctors.
The  government  contended  that as a result of this  marketing  approach,  some
doctors  ordered  blood  chemistry  profiles  (which  covered  the SMAC plus the
additional  tests)  even if they needed only the SMAC,  not  realizing  that the
additional tests were being billed to Medicare.

                 Unilab  historically  has made  available  to its clients  test
profiles  which provide the choice of  incorporating  as few or as many of these
additional tests in the basic blood chemistry  profile as its  physician-clients
feel appropriate for a full diagnostic evaluation.  Notwithstanding such policy,
the  government   contended  that  it  was  not  made   sufficiently   clear  to
physician-clients  the financial  consequences to the Medicare  program of their
choice in ordering such tests as "add-ons" to the basic blood chemistry profile,
thereby  resulting in physicians'  ordering certain of these tests, and Medicare
or MediCal,  as the case may be, being billed for such tests, when not medically
necessary.

                 The  government  did not question the quality,  reliability  or
validity  of any tests or test  results.  The tests  for HDL  cholesterol  (High
Density  Lipoprotein,  or "good"  cholesterol)  and LDL cholesterol (Low Density
Lipoprotein,   or  "bad"   cholesterol)  are  classic   established   diagnostic
measurements used in assessing the risk for cardiovascular  disease. TIBC (Total
Iron Binding  Capacity) and serum  ferritin (a test which Unilab  offered,  when
requested  by the  physician-client,  as a reflex  when  indicated  by  abnormal
results in other panel tests) are useful  indicators of iron  deficiency or iron
overload.  PBG (Protein Bound  Glucose),  used in  conjunction  with the glucose
test, is a test that aids in the diagnosis of diabetes,  a disease which affects
almost 10% of the general population, and can have severe detrimental effects if
not promptly  identified and treated.  While the Settlements did not require any
specific  changes to policies or practices  with regard to these  tests,  Unilab
nevertheless has re-emphasized to its clients the financial consequences to them
and to third party payors of their laboratory test choices.

CHAMPUS Settlement

                 In February  1994, as part of a joint  settlement  with MetPath
related to the same activities  that were the subject of the DOJ  Settlement,  a
payment of $1.1 million was made by MetPath to the Office of Civilian Health and
Medical Program of the Uniformed Services ("CHAMPUS") to settle all civil claims
of CHAMPUS  against  MetPath and Unilab with respect to the same issues and same
five  tests  that  were  the  subject  of  the  DOJ  Settlement  and  California
Settlement. Unilab's portion of such payment was approximately $25,000, with the
remainder  being paid by  MetPath.  As with the DOJ  Settlement  and  California
Settlement, the CHAMPUS settlement included a reservation of rights with respect
to certain criminal  prosecutions  which could result in mandatory  exclusion of
the  Company  from  Medicare  and State  health  programs  should  any  criminal
convictions  result.  The Champus  settlement,  however,  does not constitute an
admission by Unilab of any  wrongdoing  with respect to any issue of law or fact
arising from the civil action brought by the U.S.  government  that gave rise to
CHAMPUS'  inquiry.  The  Company was  informed  in May 1995 of the  government's
closure of its criminal inquiry without prosecution.
<PAGE>

HHS Subpoenas

                 In August 1993, Unilab received a subpoena from HHS in
connection with an investigation and internal review relating to the possible
submission of false or improper claims under the Medicare and Medicaid programs.
The HHS subpoena required production of a broad range of documents,  including
those relating to Unilab's  selling,  pricing and billing practices.  The HHS
subpoena concerned fourteen tests,  including the five tests that  were  the
subject  of the  civil  claims  Settlements.  Unilab  completed production  of
these  documents in February  1994.  Other  independent  clinical laboratories
received  similar  requests  for  production  as part of what  the Company
believes  to be the  industry-wide  LabScam investigation of certain practices
in the clinical laboratory industry. In July 1994, Unilab was informed that
jurisdiction  for this  investigation  had been  transferred to the United 
States  Attorney's  Office in Newark,  New Jersey.  In May 1995, the Company was
informed by the DOJ that its criminal  investigation  concerning the allegations
at issue in the 1993 HHS subpoena and in the Settlements had been closed without
prosecution.

                 In August  1995,  the  Company  received  a  subpoena  from HHS
requesting  certain  information  with respect to the  Company's  marketing  and
billing  practices  for a CBC, a  diagnostic  test which was not included in any
prior  subpoena  or the  subject  of any of  the  Settlements.  Unilab  promptly
completed  production  of all  documents  in  response to the HHS  subpoena  and
cooperated fully in the HHS investigation. The Company reached an agreement with
the Federal  government  in September  1996 to pay $4.0 million to conclude this
investigation.  The Company has one remaining payment to the U.S.  Government of
approximately  $324,000  (excluding  interest)  due on  September  1,  1999.  In
addition,  in October  1996 the  Company  paid the  California  MediCal  program
approximately  $160,000 to settle all their claims regarding the same issue. The
settlement  did not  constitute  an admission by the Company with respect to any
allegation,  issue of law or fact arising from the investigation and the Company
received  a full  civil  and  administrative  release  from  all  claims  by the
government  with respect to these  billings  through the date of the  settlement
agreement.

Item 4.          Submission Of Matters to a Vote of Security Holders

                 No matter was  submitted to a vote of security  holders  during
the fourth quarter of the year covered by this report.

Executive Officers and Key Management Personnel of the Registrant

                 The  following  table  sets  forth  certain  information  as of
February 12, 1999 regarding the directors, executive officers and key management
personnel of Unilab.

Name                         Age   Position

David C. Weavil..............48   Chairman of the Board, President and
                                  Chief Executive Officer
Haywood Cochrane.............50   Director
Kirby L. Cramer..............62   Director
William J. Gedale............57   Director
Richard A. Michaelson........47   Director
Gabriel Balthazar Thomas.....57   Director
Mark L. Bibi.................40   Executive Vice President, Secretary and
                                  General Counsel
Ian J. Brotchie..............59   Executive Vice President and Division
                                  President, Unilab Northern California
C. Michael Hanbury...........35   Senior Vice President, Chief Scientific
                                  Officer
R. Jeffrey Lanzolatta........46   Executive Vice President and Division
                                  President, Unilab Southern California
Brian D. Urban...............36   Executive Vice President, Chief Financial
                                  Officer and Treasurer
Paul T. Wertlake.............63   Vice President, Chief Medical Officer
<PAGE>

                  David  C.  Weavil  has  been  Chairman,  President  and  Chief
Executive Officer of the Company since January 1997. He served as Executive Vice
President of Laboratory  Corporation of America  Holdings  ("LabCorp")  from the
April 1995 merger of Roche  Biomedical  Laboratories,  Inc. ("RBL") and National
Health Laboratories,  Inc. ("NHL"),  which created LabCorp, until December 1996.
He was  additionally  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 to 1988.

                 Haywood  Cochrane  has been a director  of Unilab  since May
1997.  He has  served as  President  and Chief  Executive Officer of Meridian 
Corporate  Healthcare since February 1997. He was Executive Vice President, 
Chief Financial Officer and Treasurer of 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 NHL in June 1994. Mr. Cochrane serves as a Director of JDN
Realty Corp.,  Pathology  Corporation of America,  Sonus Corporation and
Meridian Corporate Healthcare.

                 Kirby L. Cramer has been a member of Unilab's Board of
Directors since March 1990.  Mr. Cramer is the Chairman Emeritus of the Board of
Directors of Hazleton Laboratories Corporation, a biological research company. 
Mr. Cramer served as Chief Executive Officer of Hazleton Laboratories Corp.
from 1968 through 1987, when it was sold to Corning, and as Chairman of the
Board of Directors of Hazleton Laboratories Corp. from 1987 through 1991.  Mr.
Cramer is now a professional director and currently serves as a director of
Immunex Corp., Commerce Bancorporation, Landec Corporation, Sonosite, Inc.,
Northwestern Trust Company, and Ragen MacKenzie Group.

                 William  J.  Gedale  has been a  member  of  Unilab's  Board of
Directors  since  September  1997.  He is currently  President  and CEO of Mount
Everest  Advisors,  LLC, an investment  counseling and  management  firm. He was
President  of Sheer  Asset  Management  from  January  1997 to  August  1997 and
President of Mount Everest Advisors,  LLC from July 1996 to July 1997. From June
1995 to June 1996 he was a Managing  Director  of John W.  Bristol.  Previously,
from 1989 to 1994 he served as President and CEO of General American  Investors,
a New York Stock Exchange closed-end  investment company. 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.

<PAGE>


                 Richard A.  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 1, 1998. He was
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 (the predecessor to Quest  Diagnostics  Inc.) 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.  From 1977 to
1980, Mr. Michaelson held various financial positions at International  Business
Machines Corp.

                 Gabriel Balthazar 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. Mr. Thomas has been a
consultant in international  marketing and management since 1971 and served as 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.  Mr.  Thomas is a director  of Decora
Industries, Inc.

                 Mark L. Bibi has been Executive Vice  President,  Secretary and
General Counsel of Unilab since May 1998. He served as Vice President, Secretary
and General Counsel from June 1993 through April 1998. Mr. Bibi was with the New
York City law firm of  Schulte  Roth & Zabel  from May 1989  through  June 1993.
Prior  thereto,  he was with the law firm of Sullivan & Cromwell,  New York, New
York, from August 1985 to April 1989.

                 Ian J. Brotchie has been Executive Vice President and Division
President of Unilab  Northern  California  since May 1998.  He served as
Division  President of Unilab  Northern  California  from August 1997 to April
1998.  He was Division  President of Unilab San Jose from February 1994 to
August 1997.  He was President of Associated  Laboratories,  Inc. from November
1991 to September 1995. Mr.  Brotchie  served as President of Lab Concepts Inc.
from February 1990 to November 1991.  Prior thereto,  Mr. Brotchie served as
Business Development Director with SmithKline Bio-Science Laboratories in
Dublin, California from January 1989 to February 1990.

                  C. Michael  Hanbury,  Ph.D.,  Senior Vice  President and Chief
Scientific Officer, has been with the Company since April 1998. Prior to joining
Unilab,  from April 1996 to April 1998, Dr. Hanbury managed  Regulatory  Affairs
for Roche Diagnostics,  Inc., an international  diagnostic company  representing
their  interests  to the US  Food  and  Drug  Administration  for a  variety  of
molecular  diagnostic tests for infectious disease.  Prior thereto,  Dr. Hanbury
served from  September 1994 to March 1996 as National  Technical  Director of an
international  clinical  diagnostic  manufacturer  and as a clinical chemist for
Roche  Biomedical  Labs from  April 1988 to  September  1994.  Dr.  Hanbury is a
registered  clinical  pathologist  with over 14 years  experience  in laboratory
services and in vitro diagnostic manufacturing.

<PAGE>

                 R. Jeffrey  Lanzolatta  has been  Executive  Vice President and
Division  President of Unilab Southern  California  since May 1998. He served as
Division  President of Unilab Southern  California from July 1996 to April 1998.
He was Senior Vice President,  Sales and Marketing of Unilab Southern California
from  December  1994 to July  1996.  He  served  as Vice  President,  Sales  and
Marketing  for Unilab from  November  1993 to December  1994.  He served as Vice
President,  Sales and  Marketing of MetWest from January 1993 to November  1993.
Prior  thereto Mr.  Lanzolatta  served as Regional  Vice  President  and General
Manager of MetWest's Southern  California  operations from July 1990 to December
1992. From April 1990 to June 1990, Mr.  Lanzolatta  served as Director of Sales
and Marketing for MetWest's Northern California  operations.  Mr. Lanzolatta was
Vice President,  Business  Development of International  Clinical  Laboratories'
Western Operations from July 1985 through January 1989.

                 Brian  D.  Urban  has  been  Executive  Vice  President,  Chief
Financial  Officer and  Treasurer  of Unilab  since May 1998.  He served as Vice
President,  Chief  Financial  Officer and Treasurer from September 1997 to April
1998.  He was Vice  President  and  Controller  of Unilab from  November 1993 to
September 1997. Mr. Urban served as Assistant  Controller of Unilab from October
1992 to November 1993. He was Manager of External Reporting of MetPath from July
1992 to October 1992. Prior thereto, Mr. Urban was senior audit manager at Price
Waterhouse where he worked from November 1986 to July 1992.

                 Paul T. Wertlake,  M.D., has been Vice  President and Chief
Medical  Officer of the Company since January 1994.  Since October 1989, Dr.
Wertlake has served as the Senior Medical Officer for Southern  California and
Medical  Director of Unilab's  Tarzana Laboratory.  Prior thereto, Dr. Wertlake
has served in the academic, hospital and reference laboratory sectors.


                                     PART II

Item 5.          Market for the Registrant's Common Equity and Related
                 Stockholder Matters

                 Market  information  for  the  Registrant's   common  stock  is
contained  in Note 14  (Unaudited  Quarterly  Financial  Data)  of the  Notes to
Consolidated Financial Statements at page 30 of the Company's 1998 Annual Report
to shareholders, and such information is incorporated herein by reference.

                 The  Company's  common  stock  trades  on  the  American  Stock
Exchange under the symbol "ULB". As of February 12, 1999,  there were 40,729,293
shares of Common Stock outstanding held by 2,940 holders of record.

                 The Company has not paid any cash dividends with respect to its
common stock and does not expect to do so in the foreseeable future.


<PAGE>


Item 6.          Selected Financial Data

                 The selected  financial  data for each of the five years in the
period ended December 31, 1998 is as follows:

<TABLE>
(amounts in thousands, except per share data)
- ----------------------------------------------------------------------------------------------------------
<CAPTION>
For the Years Ended December 31,               1998          1997           1996         1995         1994
- ----------------------------------------------------------------------------------------------------------
<S>                                        <C>          <C>            <C>          <C>          <C>

Revenue                                    $217,370      $214,001       $205,217     $189,042     $151,820
- ----------------------------------------------------------------------------------------------------------
Legal, acquisition and restructuring
related charges                                ----          ----         70,595        4,400        1,282
- ----------------------------------------------------------------------------------------------------------
Operating income (loss)                      24,241        14,604       (72,842)        4,539        9,137
- ----------------------------------------------------------------------------------------------------------
Loss on sale of equity investment/             ----          ----          4,529       36,499         ----
promissory note
- ----------------------------------------------------------------------------------------------------------
Income (loss) before income taxes
and extraordinary item                       10,703           536       (89,493)     (40,043)        4,515
- ----------------------------------------------------------------------------------------------------------
Income tax provision                           ----          ----           ----         ----         ----
- ----------------------------------------------------------------------------------------------------------
Income (loss) before extraordinary item      10,703           536       (89,493)     (40,043)        4,515
- ----------------------------------------------------------------------------------------------------------
Extraordinary item                             ----          ----          3,451        1,732         ----
- ----------------------------------------------------------------------------------------------------------
Net income (loss)                            10,703           536       (92,944)     (41,775)        4,515
- ----------------------------------------------------------------------------------------------------------
Preferred stock dividends                       131           138            144          144          144
- ----------------------------------------------------------------------------------------------------------
Net income (loss) available to
common shareholders                          10,572           398       (93,088)     (41,919)        4,371
- ----------------------------------------------------------------------------------------------------------
Basic net income (loss) before extraordinary
item per common share                          0.26          0.01         (2.43)       (1.12)         0.12
- ----------------------------------------------------------------------------------------------------------
Basic net income (loss) per common share       0.26          0.01         (2.53)       (1.17)         0.12
- ----------------------------------------------------------------------------------------------------------
Weighted average shares outstanding          40,665        39,926         36,831       35,918       34,904
- ----------------------------------------------------------------------------------------------------------
At December 31,
- ----------------------------------------------------------------------------------------------------------
Total assets                                142,460       118,700        125,919      196,174      196,407
- ----------------------------------------------------------------------------------------------------------
Long-term debt, net of current portion      137,170       124,285        126,120       87,207       67,660
- ----------------------------------------------------------------------------------------------------------
Shareholders' equity (deficit)             (21,367)      (32,283)       (34,688)       56,330       95,334
- ----------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>


Note:     The variations in the year-to-year  comparisons are due primarily to
          the acquisition of substantially  all of the assets of Meris
          Laboratories,  Inc.,  effective November 5, 1998, the acquisition of
          MLN Holding Acquisition Co., effective May 16, 1995 and the
          acquisition of Premier Laboratory Services,  Inc.,  effective
          January 24, 1994. In addition,  see Notes 4, 5 and 7 of the  Notes to
          Consolidated  Financial  Statements  at page __ of the  Company's
          1998  Annual  Report  to shareholders  for a more detailed discussion
          of the legal and acquisition related charges, restructuring charges
          and loss on sale of promissory  note recorded in 1996, and such 
          information is incorporated  herein by reference.  The $4.4 million 
          legal  charge  recorded  in 1995  relates  to a  settlement and legal
          fees paid in  connection  with a lawsuit regarding the company's 
          sales,  marketing and distribution of a product designed for use in
          connection with pap smears. The $36.5 loss on the sale of equity 
          investment  recorded in 1995  relates to the sale of a 40% equity 
          investment  the  Company had in a European laboratory  company.  The
          $1.3 million acquisition related charges recorded in 1994 relates to
          the closure of Unilab patient service centers and related  facilities
          and reduction in the Unilab workforce  incurred in connection with
          the Premier acquisition.


Item 7.        Management's Discussion and Analysis of Financial Condition and
               Results of Operations

               "Management's  Discussion and Analysis" at pages 12 through 15
of the Company's 1998 Annual Report to  shareholders is incorporated herein by
reference.

Item 8.         Financial Statements and Supplementary Data

                The Company's consolidated financial statements,  together with
the report  thereon of Arthur  Andersen  LLP ("AA")  dated  February  12,  1999,
appearing  on pages  16  through  31 of the  Company's  1998  Annual  Report  to
shareholders,  are incorporated  herein by reference.  With the exception of the
aforementioned  information in this Item 8 and the  information  incorporated by
reference in Items 5, 6 and 7, the 1997 Annual Report to  shareholders is not to
be deemed filed as part of this Form 10-K Annual Report.

Item 9.         Changes in and Disagreements with Accountants on Accounting
                and Financial Disclosure

                None.

<PAGE>
                                    PART III

Item 10.         Directors and Executive Officers of the Registrant

                 Information  relating to  directors of the  Registrant  will be
contained in a definitive  Proxy  Statement  involving the election of directors
which the  Registrant  will file with the  Securities  and  Exchange  Commission
pursuant to Regulation  14A not later than 120 days after December 31, 1998, and
such information is incorporated herein by reference.  Certain other information
relating to Executive  Officers and Key  Management  Personnel of the Registrant
appears at pages 23 to 26 of this Form 10-K Annual Report.

Item 11.         Executive Compensation

                 Information   relating  to  executive   compensation   will  be
contained in the Proxy  Statement  referred to above in "Item 10.  Directors and
Executive  Officers of the  Registrant",  and such  information is  incorporated
herein by reference.

Item 12.         Security Ownership of Certain Beneficial Owners and Management
                 and Directors

                 Information   relating   to  security   ownership   of  certain
beneficial  owners and  management  and directors will be contained in the Proxy
Statement referred to above in "Item 10. Directors and Executive Officers of the
Registrant", and such information is incorporated herein by reference.

Item 13.         Certain Relationships and Transactions with Related Persons

                 Information relating to certain  relationships and transactions
with related persons will be contained in the Proxy Statement  referred to above
in "Item 10.  Directors  and  Executive  Officers of the  Registrant",  and such
information is incorporated herein by reference.


<PAGE>

                                     PART IV

Item 14.       Exhibits, Financial Statements, Financial Statement Schedules
               and Reports on Form 8-K
                                                      Reference
                                           ----------------------------------
                                              Form 10-K      Annual Report to
                                             Annual Report     Shareholders

                                               Page                Page
(a)(1) Index to Financial Statements:
Incorporated by reference to the 1998
Annual Report to shareholders:

Statements of Operations for the
years ended December 31, 1998,
1997, 1996                                      ---                  16

Balance Sheets at
December 31, 1998 and 1997                      ---                  17

Statements of Shareholders'
Equity (Deficit) for the years ended
December 31, 1998, 1997, 1996                   ---                  18

Statements of Cash Flows for
the years ended December 31,
1998, 1997, 1996                                ---                  20

Notes to Financial Statements                   ---                  21

Report of Independent Public Accountants        ---                  31

(2) Index to Financial Statement Schedule:

Report of Independent Public Accountants
on Financial Statement Schedule                 33                   ---

II - Valuation and Qualifying
Accounts for the years ended
December 31, 1998, 1997 and 1996                34                   ---

The  financial  statement  schedule  should  be read  in  conjunction  with  the
financial  statements  incorporated  by  reference  in Item 8 of this  Form 10-K
Annual Report. Schedules other than those listed above have been omitted because
of the absence of the  conditions  under which they are  required or because the
information required is shown in the financial statements or the notes thereto.


<PAGE>

(3)          Exhibits required to be filed by Item 601 of Regulation S-K.


             The  information  called for by this paragraph is  incorporated
             herein by reference to the Exhibit Index of this report.

(b)          Reports on Form 8-K

             The following current Reports on Form 8-K were filed during the
             fourth quarter of 1998.

             Current Report on Form 8-K,  dated October 29, 1998,  regarding
             Items 5 and 7.

             Current Report on Form 8-K, dated November 16, 1998,  regarding
             Items 5 and 7.

             Additionally, the Company filed the following Current Report on
             Form 8-K during the first quarter of 1999:

             Amendment to Current  Report on Form 8-K(A),  dated January 18,
             1999, regarding Items 2 and 7.


<PAGE>


                                    SIGNATURE


Pursuant to the  requirements  of the  Securities  Exchange Act of 1934,  Unilab
Corporation  has duly  caused this  amendment  to be signed on its behalf by the
undersigned thereunto duly authorized.

Dated:     3/24/99                    UNILAB CORPORATION
                    


                                      By:       /s/    Brian D. Urban      
                                      Name:    Brian D. Urban
                                      Title:   Executive Vice President,
                                               Chief Financial Officer and
                                               Treasurer


<PAGE>



              REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS ON SCHEDULES



To Unilab Corporation

We have audited in accordance with generally  accepted auditing  standards,  the
balance sheets as of December 31, 1998 and 1997,  and the related  statements of
operations,  shareholders' equity (deficit) and cash flows for each of the three
years in the period  ended  December 31, 1998  included in Unilab  Corporation's
annual report to  shareholders  incorporated by reference in this Form 10-K, and
have issued our report thereon dated February 12, 1999. Our audits were made for
the purpose of forming an opinion on the basic financial  statements  taken as a
whole. The schedule listed in Item 14a(2) for the years ended December 31, 1998,
1997 and 1996 is the responsibility of the Company's management and is presented
for purposes of complying with the Securities  and Exchange  Commission's  rules
and is not  part of the  basic  financial  statements.  This  schedule  has been
subjected  to the  auditing  procedures  applied  in  the  audits  of the  basic
financial statements and, in our opinion, fairly states in all material respects
the  financial  data  required to be set forth  therein in relation to the basic
financial statements taken as a whole.





ARTHUR ANDERSEN LLP
Los Angeles, California
February 12, 1999


<PAGE>
<TABLE>

                                                                Schedule II


                       UNILAB CORPORATION AND SUBSIDIARIES
                        VALUATION AND QUALIFYING ACCOUNTS
                             (Amounts in thousands)
<CAPTION>
                                      Balance at       Charged to                       Balance
                                       Beginning        Costs and                       End of
                                       of Period        Expenses        Deductions      Period

<S>                                     <C>             <C>            <C>             <C>
FOR THE YEAR ENDED
DECEMBER 31, 1996;
Allowance for doubtful accounts          $ 8,454         $14,180        $(13,296)       $9,338

FOR THE YEAR ENDED
DECEMBER 31, 1997;
Allowance for doubtful accounts          $ 9,338         $15,663        $(15,182)       $9,819

FOR THE YEAR ENDED
DECEMBER 31, 1998;
Allowance for doubtful accounts          $ 9,819         $15,662        $(14,668)      $10,813
</TABLE>


<PAGE>


                                      Index

Exhibit No.                       Description

 2.1      Asset Purchase  Agreement,  dated as of September 16, 1998, by and
          between Unilab  Corporation,  as Buyer, and Meris Laboratories,  Inc.
          Debtor and  Debtor-in-Possession,  as Seller  (Incorporated by
          reference to Exhibit 2.1 to the Company's Amendment on Form 8-K(A)
          dated January 18, 1999).

 2.2      $14 million  Convertible  Subordinated  Note, dated November 5, 1998,
          payable by Unilab Corporation  to Meris  Laboratories,  Inc. 
          (Incorporated by reference to Exhibit 2.2 to the Company's Amendment
          on Form 8-K(A) dated January 18, 1999).

 2.3      Registration Rights Agreement, dated November 5, 1998, by and between
          Unilab Corporation and Meris Laboratories,  Inc.  (Incorporated  by
          reference to Exhibit 2.3 to the Company's  Amendment on Form
          8-K(A) dated January 18, 1999).

 3.1      Amended and Restated  Certificate of  Incorporation  of the Company 
          (Incorporated  by Reference to Exhibit 3.1 to the Company's
          Registration Statement on Form S-1, dated November 30, 1993).

 3.2      Amendment to the  Company's  Certificate  of  Incorporation,  dated
          May 14, 1996  (Incorporated  by Reference to Exhibit 3.1 to the
          Company's  Quarterly Report on Form 10-Q for the Quarter ended June
          30, 1996, dated August 6, 1996).

 3.3      Second  Amended  and  Restated  By-laws  of  the  Company, as amended 
          as of  February  27,  1996 (Incorporated  by Reference to Exhibit 3.1
          to the Company's  Current Report on Form 8-K dated March 19, 1996).

 4.1      Rights  Agreement dated as of February 25, 1994,  between the Company
          and Mellon  Securities  Trust Company as Rights Agent  (Incorporated
          by Reference to Exhibit 4.1 to the Company's  Current Report
          on Form 8-K dated March 1, 1994).

4.2       Amended and Restated  Rights  Agreement dated as of March 15, 1996
          between the Company and Chemical Mellon  Shareholder  Services as
          Rights  Agent  (Incorporated  by  Reference  to Exhibit 4.2 to the
          Company's Amendment No. 1 to Registration Statement on Form 8-A dated
          March 18, 1996).

4.3       Indenture, dated as of March 14, 1996, with respect to the 11% Senior
          Notes due 2006,  between the Company and Marine  Midland  Bank,  as
          Trustee  (Incorporated  by  reference to Exhibit 4.2 to the Company's
          Quarterly Report on Form 10-Q for the Quarter ended March 31, 1996,
          dated May 1, 1996).
<PAGE>

10.1      Healthcare  Receivables  Purchase Agreement dated as of July 31, 1996
          between the Company and Daiwa  Healthco-2  LLC  (Incorporated  by
          Reference to Exhibit 10.1 to the Company's Quarterly Report on 10-Q
          for the Quarter ended September 30, 1996, dated November 4, 1996).

10.2      Consulting  Agreement,  dated as of  September  17,  1997,  between
          the  Company  and  Richard  A. Michaelson  (Incorporated by reference
          to Exhibit 10.15 to the Company's Annual Report on Form 10-K
          for the year ended December 31, 1997).

10.3      Amendment No. 1, dated as of September 17, 1997,  to the Stock Option
          Agreement  dated as of April 28,  1997,  between the Company and
          Richard A.  Michaelson  (Incorporated  by  reference to Exhibit
          10.15 to the Company's Annual Report on Form 10-K for the year ended
          December 31, 1997).

10.4      Amendment No. 1, dated as of September 17, 1997, to the Stock Option
          Agreement,  dated as of April 28, 1997, between the Company and
          Richard A.  Michaelson  (Incorporated  by  reference to Exhibit
          10.15 to the Company's Annual Report on Form 10-K for the year ended
          December 31, 1997).

10.5      Amendment  No. 1, dated as of  September  17,  1997,  to the Stock 
          Option  Agreement,  dated as of February  27, 1996,  between the
          Company and Richard A.  Michaelson  (Incorporated  by reference to
          Exhibit 10.18 to the Company's Annual Report on Form 10-K for the year
          ended December 31, 1997).

10.6      Amendment No. 1, dated as of September 17, 1997, to the Stock Option
          Agreement,  dated as of May 1, 1995, between the Company and Richard
          A. Michaelson  (Incorporated by Reference to Exhibit 10.19 to
          the Company's annual Report on form 10-K for the year ended
          December 31, 1997).

10.7      Amendment  No. 1, dated as of  September  17,  1997,  to the Stock
          Option  Agreement,  dated as of January 1, 1995, between the Company
          and Richard A.  Michaelson  (Incorporated  by  Reference  to Exhibit
          10.20 to the Company's Annual Report on Form 10-K for the year ended
          December 31, 1997).

10.8      Amendment  No. 1, dated as of  September  17,  1997,  to the Stock
          Option  Agreement,  dated as of February  25, 1994,  between the
          Company and Richard A.  Michaelson  (Incorporated  by Reference to
          Exhibit 10.21 to the company's Annual Report on form 10-K for the year
          ended December 31, 1997).
<PAGE>

10.9      Amendment  No. 1, dated as of  September  17,  1997,  to the Stock 
          Option  Agreement,  dated as of October 20,  1992,  between the
          Company and Richard A.  Michaelson  (Incorporated  by  Reference to
          Exhibit 10.22 to the Company's Annual Report on form 10-K for the
          year ended December 31, 1997).

10.10     Amendment No. 1, dated as of September 17, 1997, to the  Restricted
          Stock  Agreement,  dated as of  May 1, 1995,  between the Company and
          Richard A. Michaelson  (Incorporated  by Reference to Exhibit
          10.23 to the Company's Annual Report on Form 10-K for the year ended
          December 31, 1997).

10.11     Employment  Agreement,  dated as of January  20,  1997  between 
          David C.  Weavil  and the  Company (Incorporated  by Reference to
          Exhibit  10.12 to the Company's  Annual  Report on Form 10-K,  dated
          March 21, 1997).

10.12     Stock  Option  Agreement,  dated as of January  20,  1997  between
          David C. Weavil and the Company (Incorporated by Reference to Exhibit
          10.13 to the Company's  Annual  Report on Form 10-K,  dated
          March 21, 1997).

10.13     Promissory  Note,  dated  January 20,  1997, payable  by David C.
          Weavil to the  Company  (Incorporated  by Reference to Exhibit 10.14
          to the Company's Annual Report on Form 10-K, dated March 21, 1997).

10.14     Secured  Promissory  Note,  dated  January  20,  1997,  payable by
          David C.  Weavil to the  Company (Incorporated  by Reference to
          Exhibit  10.15 to the Company's  Annual  Report on Form 10-K,  dated
          March 21, 1997).

10.15     Letter  Agreement,  dated  January 20, 1997,  between  Andrew  H. 
          Baker  and the  Company (Incorporated  by Reference to Exhibit 10.17
          to the Company's Annual Report on Form 10-K, dated March 21, 1997).

10.16     Restricted Stock Agreement,  dated as of January 20, 1997,  between
          Andrew H. Baker and the Company (Incorporated  by  Reference to
          Exhibit  10.18 to the  Company's  Annual  Report on Form 10-K dated
          March 21, 1997).

10.17     Amendment  No. 1, dated as of January 20, 1997, to Stock Option 
          Agreement  dated as of October 20, 1992,  between Andrew H. Baker
          and the Company  (Incorporated  by Reference to Exhibit 10.19 to the
          Company's Annual Report on Form 10-K, dated March 21, 1997).

<PAGE>

10.18     Amendment  No. 1, dated as of January 20, 1997, to Stock Option 
          Agreement,  dated as of January 1, 1995,  between  Andrew H. Baker
          and the Company with respect to options to purchase  120,000 shares
          of Unilab Common Stock  (Incorporated  by Reference to Exhibit 10.20
          to the Company's Annual Report on Form 10-K, dated March 21, 1997).

10.19     Amendment  No. 1, dated as of January 20, 1997 to Stock  Option 
          Agreement,  dated as of January 1, 1995,  between Andrew H. Baker and
          the Company with respect to options to purchase 60,000 shares of
          Unilab Common Stock  (Incorporated  by Reference to Exhibit 10.21 to
          the Company's Annual Report on Form 10-K, dated March 21, 1997).

10.20     Amendment No. 1, dated as of January 20, 1997, to Stock Option
          Agreement,  dated as of February 27, 1996,  between Andrew H. Baker
          and the Company  (Incorporated  by Reference to Exhibit 10.22 to the
          Company's Annual Report on Form 10-K, dated March 21, 1997).

10.21     Non-Compete  Agreement,  dated as of January  20,  1997,  between 
          Andrew H. Baker and the  Company (Incorporated  by  Reference to
          Exhibit  10.23 to the  Company's  Annual  Report on Form 10-K dated
          March 21, 1997).

10.22     Consulting  Agreement,  dated as of  January  20,  1997,  between the 
          Company  and  Hartill  Ltd. (Incorporated  by Reference to Exhibit
          10.24 to the Company's  Annual  Report on Form 10-K,  dated
          March 21, 1997).

10.23     Form of Employee  Stock  Option  Agreement  (Incorporated  by
          Reference to Exhibit No. 10.5 to the Company's Form S-1 Registration
          Statement dated November 30, 1993).

10.24     Form of Key Management  Personnel  Employment  Agreement
          (Incorporated by Reference to Exhibit No. 10.5 to Amendment No. 1,
          dated December 23, 1993, to the Company's Form S-1 Registration
          Statement  dated November 30, 1993).

10.25     Settlement  Agreement,  dated  September  13, 1993,  by and among the
          United  States  Department of Justice,  the  Office of  Inspector 
          General of the United  States  Department  of Health and Human
          Services;  MetPath, a division of Corning Lab Services Inc; MetWest
          Inc.; the Company;  and C. Jack  Dowden (Incorporated by Reference to
          Exhibit No. 99.2 to the Company's  Current Report on Form 8-K
          dated September 13, 1993).

10.26     Settlement  Agreement,  dated September 22, 1993, by and among the
          State of California;  MetPath, a division of Corning Lab Services, 
          Inc.; MetWest Inc.; the Company and C. Jack Dowden (Incorporated
          by Reference to Exhibit No. 99.1 to the Company's  Current  Report on
          Form 8-K dated  September 27, 1993).
<PAGE>

10.27     Settlement  Agreement,  dated as of February 17, 1994, by and among
          the United States Department of Justice;  the Office of the Civilian
          Health and Medical Program of the Uniformed Services;  MetPath
          Inc; and the Company  (Incorporated by Reference to Exhibit 10.18 to
          the Company's Annual Report on Form 10-K dated March 30, 1994).

10.28     Settlement  Agreement,  dated  September 19, 1996,  among the Company,
          Corning Inc., the Office of Inspector  General of the  Department of
          Health and Human  Services,  the State of  California  and
          certain other  governmental  entities  (Incorporated  by Reference to
          Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q for the
          Quarter Ended September 30, 1996, dated November 4, 1996).

10.29     Participation  Agreement,  dated as of November 7, 1996, by and
          between the Company and Donaldson, Lufkin and Jenrette Securities 
          Corporation  (Incorporated by Reference to Exhibit 10.33 to Annual
          Report on Form 10-K, dated March 21, 1997).

13.1      Selected portions of Annual Report to Shareholders

21.1      Subsidiaries of the Company

22.1      Proxy Statement, dated _____ __, 1999, for Annual Meeting of
          Stockholders held on June 17, 1999.

24.1      Power of Attorney of David C. Weavil

24.2      Power of Attorney of Haywood Cochrane

24.3      Power of Attorney of Kirby L. Cramer

24.4      Power of Attorney of William Gedale

24.5      Power of Attorney of Richard Michaelson

24.6      Power of Attorney of Gabriel B. Thomas

99.1      Press  Release,  dated  February 4, 1999,  announcing  fourth quarter
          and full year 1998  earnings results.






                                                                  Exhibit 13.1

           Management's Discussion & Analysis of Financial Condition
                           and Results of Operations

Results of Operations

Year ended December 31, 1998 compared to year ended December 31, 1997

         Revenue  increased  to $217.4  million for the year ended  December 31,
1998 from $214.0 million for the comparable  prior year period,  representing an
increase of $3.4 million or 1.6%. Approximately $2.9 million of the increase was
attributable to revenue  generated from the  acquisition of Meris  Laboratories,
Inc.  ("Meris"),  which was  effective as of November 5, 1998.  Exclusive of the
acquired Meris business, revenue increased $0.5 million, primarily the result of
increases  in  reimbursement  levels  of $6.3  million  offset by  decreases  in
specimen volume of approximately $5.8 million.

         The Company  experienced  a 3.1%  increase,  exclusive  of the acquired
Meris  business,  in  the  average  reimbursement  received  for  each  specimen
processed  during the year ended December 31, 1998 versus the  comparable  prior
year period. The increase in reimbursement  levels is primarily due to increases
in rates  charged to managed care clients as the Company  continues its strategy
to only work with managed care clients who are willing to adequately pay for the
levels of service  they  request  and the  elimination  and  replacement  of the
Company's most  unprofitable  accounts with other  reasonably  priced  business.
Exclusive  of the  acquired  Meris  business,  the  Company  experienced  a 2.8%
decrease in the number of specimens processed during the year ended December 31,
1998 versus the  comparable  prior year  period.  The decrease in volume was the
effect of  Medicare  requirements  for new test  panels  which led to changes in
ordering  patterns among  physicians,  the elimination of some  under-performing
accounts and the exit from small  geographical  areas where the Company couldn't
achieve significant economies of scale.

         Earnings  before   interest,   taxes,   depreciation  and  amortization
("EBITDA")  were $31.8 million for the year ended  December 31, 1998 compared to
$23.5 million for the comparable prior year period. Without the effect of a $1.2
million impact on EBITDA resulting from the integration  period between November
5, 1998 and late  December  1998 of the Meris  acquisition,  EBITDA for the year
ended December 31, 1998 would have been $33.0 million.

         Salaries,  wages and benefits  decreased to $67.7  million for the year
ended December 31, 1998 from $69.1 million for the comparable prior year period.
As a percentage  of revenue,  salaries,  wages and benefits were 31.2% and 32.3%
for the years ended  December  31, 1998 and 1997,  respectively.  Such  decrease
primarily reflects a reduction in headcount and tight control over the growth in
wage increases.

         Supplies expense remained consistent at approximately 14.0% of revenue
for the years ended December 31, 1998 and 1997.  However,  supplies  expense per
specimen  processed  has  increased  slightly in 1998 as the Company  started to
perform  certain  more costly tests  in-house in late 1997 that were  previously
sent to outside  reference  laboratories.  Although  the Company  experienced  a
slight increase in supplies  expense related to bringing this testing  in-house,
the Company had a positive net benefit as lab subcontracting  expenses decreased
by more than 10% in the year ended December 31, 1998 from the  comparable  prior
year period.

         Other operating  expenses decreased to $53.6 million for the year ended
December 31, 1998 from $57.0 million for the comparable prior year period.  As a
percentage  of revenue,  other  operating  expenses were 24.7% and 26.6% for the
years  ended  December  31,  1998 and  1997,  respectively.  Such  decrease  was
primarily due to reductions in lab  subcontracting  expenses (see explanation in
preceding   paragraph)   and   reductions   in  outside   courier,   automobile,
telecommunication  and insurance expenses,  as the Company evaluated all expense
line items throughout 1997 and 1998 and streamlined expenses as
necessary to achieve cost efficiencies.

         Amortization and depreciation expense decreased to $7.6 million for the
year ended  December  31, 1998 from $8.9 million for the  comparable  prior year
period primarily due to certain  non-compete  agreements and laboratory computer
equipment becoming fully amortized or depreciated in late 1997 and early 1998.

         Selling, general and administrative expenses decreased to $33.5 million
for the year ended December 31, 1998 from $34.6 million for the comparable prior
year period.  As a percentage of revenue,  selling,  general and  administrative
expenses  were 15.4% and 16.2% for the years ended  December  31, 1998 and 1997,
respectively.  Such  decrease  continued  the  trend  realized  by  the  Company
throughout  1997  and  relates  to  a  reduction  in  corporate  managerial  and
administrative  positions and streamlining of all operating support services.

         Third party  interest  expense,  net decreased to $13.5 million for the
year ended  December 31, 1998 from $14.1 million for the  comparable  prior year
period primarily due to the repayment of capital lease obligations.

Results of Operations

Year ended December 31, 1997 compared to year ended December 31, 1996

         Revenue  increased  to $214.0  million for the year ended  December 31,
1997 from $205.2 million for the comparable  prior year period,  representing an
increase of $8.8  million or 4.3%.  The  increase  was  primarily  the result of
additional  specimen  volume  generating  approximately  $17.6 million offset by
changes in payor mix and decreases in reimbursement levels of approximately $8.8
million.

         The  $17.6  million  increase  in  specimen  volume  was  due to a 8.6%
increase in the number of specimens processed during the year ended December 31,
1997 versus the  comparable  prior year  period.  Such  increase  was  primarily
attributable to growth in the Company's core business.

         The Company  experienced  a 3.9%  decline in the average  reimbursement
received for each  specimen  processed  during the year ended  December 31, 1997
versus the comparable  prior year period.  Such decrease was primarily due to an
increase in managed  care  business  and a general  softening  in  reimbursement
levels across most payor groups, most notably from insurance carriers.

         While average  reimbursement  was down over the prior year, the average
reimbursement over the last six months of 1997 increased approximately 2.5% over
the  average  reimbursement  in the first six months of 1997,  the first time in
over two years that average  reimbursement has increased over a comparable prior
period.

         EBITDA were $23.5 million for the year ended December 31, 1997 compared
to $9.2  million  for the  comparable  prior year  period  (excluding  legal and
acquisition related and restructuring  charges,  loss on sale of promissory note
and extraordinary item).

         Salaries,  wages and benefits  decreased to $69.1  million for the year
ended December 31, 1997 from $70.9 million for the comparable prior year period.
As a percentage  of revenue,  salaries,  wages and benefits were 32.3% and 34.5%
for the years ended  December  31, 1997 and 1996,  respectively.  Such  decrease
primarily  reflects a reduction  in  headcount,  control over the growth in wage
increases and economies of scale  associated with fewer  employees  processing a
significantly higher specimen volume.

         Supplies expense increased to $29.9 million for the year ended December
31,  1997  from  $28.6  million  for the  comparable  prior  year  period.  As a
percentage of revenue,  supplies  expense were consistent at 14.0% for the years
ended December 31, 1997 and 1996.  However,  on a per specimen  basis,  supplies
costs actually  decreased 4.2% as a result of economies of scale associated with
an increased specimen volume.

         Other operating  expenses increased to $57.0 million for the year ended
December 31, 1997 from $54.7 million for the comparable prior year period.  As a
percentage of revenue, other operating expenses were consistent at 26.6% for the
years ended December 31, 1997 and 1996.

         During  the third  quarter of 1996,  the  Company  recorded  charges of
approximately  $4.9 million,  primarily related to settlements  reached with the
United States ("U.S.") Government and certain other entities in connection with 
the Company's sales, marketing and billing practices. The Company agreed to pay
the U.S.Government approximately $4.0 million to conclude an investigation of
certain of Unilab's  billings  to Medicare  and certain  other  governmental 
entities  for hematology  indices  being billed in  conjunction  with  complete
blood counts.  Unilab  also paid the  California  MediCal program approximately
$160,000 in October 1996 to settle all their claims concerning the same issue.

         During the fourth  quarter of 1996,  the  Company  recorded  charges of
$65.7  million,  consisting of the  write-off of goodwill and customer  lists of
$61.7  million  and a reserve  for  managerial  restructuring  expenses  of $4.0
million. The write-off of goodwill and customer lists principally related to two
of the Company's  laboratory  operations,  which had seen  decreasing  operating
results  and  cash  flows   throughout   1996.   The  $4.0  million   managerial
restructuring  expenses  related to a reduction in headcount of approximately 25
employees,  including the resignation of the Company's then Chairman,  President
and Chief Executive Officer in January 1997.

         Amortization and depreciation expense decreased to $8.9 million for the
year ended  December 31, 1997 from $11.5 million for the  comparable  prior year
period.  Such decrease was primarily due to a reduction in amortization  expense
from the write-off of goodwill and customer lists of $61.7 million in the fourth
quarter of 1996 offset by increased depreciation expense from approximately $4.1
million of laboratory computer equipment and software placed into service at one
of the Company's laboratory locations in the first quarter of 1997.

         Selling, general and administrative expenses decreased to $34.6 million
for the year ended December 31, 1997 from $41.8 million for the comparable prior
year period.  As a percentage of revenue,  selling,  general and  administrative
expenses  were 16.2% and 20.4% for the years ended  December  31, 1997 and 1996,
respectively.  Such  decrease  related  primarily to a reduction in the level of
expenditures  incurred in the sales and marketing area,  including  revisions in
incentive  programs and  reduction  in staffing  levels and  organizational  and
support  services,  and  reduction in corporate  managerial  and  administrative
positions.

         Third party  interest  expense,  net increased to $14.1 million for the
year ended  December 31, 1997 from $13.4 million for the  comparable  prior year
period.  The  increase  was  primarily  due to the full year effect of increased
indebtedness  incurred  by the Company  under an  offering of $120.0  million of
senior notes ("the Senior Notes") in March 1996.

         Related  party  interest  income  of $1.3  million  for the year  ended
December 31, 1996 reflects  interest  income on a $15.0 million  promissory note
the  Company  received  upon the sale,  effective  June 30,  1995,  of an equity
investment.  In November 1996, the Company sold a 100% participation interest in
its rights under the $15.0  million  promissory  note to a third party for $11.0
million. The Company recorded a $4.5 million loss upon the sale, which reflected
the $4.0  million  loss in  principal  plus the  write-off of accrued and unpaid
interest of $0.5 million from July 1, 1996 through the sale date.

         Upon  completion  of the Senior Notes  offering,  the Company wrote off
$3.5  million of deferred  financing  costs  related to the  Company's  previous
credit agreements.

Liquidity and Capital Resources

         Net cash  provided  by  operating  activities  during  the year  ending
December 31, 1998 was $14.0 million and reflects an improvement of $10.3 million
over the  comparable  prior year  period  when net cash  provided  by  operating
activities  was $3.7  million.  The  increase in 1998 was  primarily  due to the
improvement in the Company's operating performance.

         Net cash used by  financing  activities  was $1.8  million for the year
ending  December  31,  1998,   primarily   resulting  from  scheduled  principal
repayments  under capital lease  obligations of $1.7 million and the issuance of
preferred dividends of $0.1 million.

Net cash  used by  investing  activities  was $3.7  million  for the year  ended
December  31, 1998,  resulting  from  capital  expenditures  of $3.0 million and
payments made on  acquisitions  completed in 1996 and 1995 of $0.7 million.  The
Company expects that its capital expenditure requirements, excluding any amounts
related to acquisitions, will approximate $4.0 million in 1999.

         In March 1996,  the Company  completed an offering of $120.0 million of
Senior Notes.  The proceeds  from the Senior Notes  offering were used to retire
outstanding  borrowings  under the Company's then existing bank term loan and
revolving line of credit facility in the principal  amount of
$102.1 million,  plus accrued interest.  Interest on the Senior Notes is 11% and
is payable on April 1st and October 1st of each year.  The Senior  Notes are due
April 2006 and the Company is not required to make any  mandatory  redemption or
sinking fund payment with respect to the Senior Notes prior to maturity.

         The Senior Notes are not redeemable prior to April 1, 2001, after which
the Senior Notes will be redeemable at any time at the option of the Company, in
whole or in part,  at various  redemption  prices as set forth in the  indenture
covering such Senior Notes (the "Indenture"),  plus accrued and unpaid interest,
if any, to the date of  redemption.  In addition,  at any time prior to April 1,
1999, the Company may redeem up to $42.0 million in aggregate  principal  amount
of the Senior  Notes with the net  proceeds of one or more public  offerings  of
common stock of the  Company,  at a  redemption  price of 110% of the  principal
amount  thereof,  plus accrued and unpaid  interest,  if any, to the  redemption
date.

         The Notes are  general  unsecured  obligations  of the Company and rank
pari  passu in right of  payment  with all  unsubordinated  indebtedness  of the
Company.  In addition,  the Indenture limits the ability of the Company to incur
additional indebtedness, under certain circumstances.

         In connection with the acquisition of Meris, the Company issued a $14.0
million convertible  subordinated note, bearing interest at the rate of 7.5% and
payable on May 5 and November 5 of each year.  The note is  subordinated  to the
Senior  Notes and is due in  November  2006.  The note is  convertible  into the
Company's  common  stock at a  conversion  price of $3.00 per share,  subject to
certain restrictions. In addition, subject to certain restrictions, the note may
be redeemed by the Company.

         In July 1996,  the Company  entered into an agreement  with a financial
institution  whereby it can sell  accounts  receivable  up to a maximum of $20.0
million.  As collections reduce accounts  receivables which have been sold, the
Company  may sell new receivables to bring the  amount  sold up to a maximum of
$20.0 million.

         As of  December  31,  1998,  the  Company  had not  sold  any  accounts
receivable  under  this  agreement.  Sales of  receivables,  if any,  under  the
facility are subject to a liquidity and debt service coverage ratio. The Company
was in compliance  with such  covenants in 1998.  The  termination  date for the
agreement is July 1999.  If the facility  terminates  prior to July 1999 for any
reason,  the Company is obligated  to pay a $200,000  early  termination  fee. A
commitment fee of 1/2 percent is required on the unused portion of the available
facility. The Company retains collection and administrative  responsibilities on
the  receivables  sold  as  agent  for  the  purchaser.  In  addition,  accounts
receivable sold, if any, will be reflected as a reduction of accounts receivable
in the balance  sheet.  The full amount of the allowance  for doubtful  accounts
will be retained because the Company will retain  substantially the same risk of
credit loss as if the receivables had not been sold.

         The Company had $20.1 million of cash and cash  equivalents  on hand at
December  31,  1998.  Management  believes  that  the  amount  of cash  and cash
equivalents  available  at December  31,  1998 and the cash flow  expected to be
generated from operations will be sufficient for the Company to meet anticipated
requirements for working capital, interest payments,  capital expenditures,  and
scheduled principal payments under capital lease and debt obligations for the
foreseeable future.

Year 2000

         The  Company is in the final  stages of  upgrading  and  modifying  its
laboratory, billing and accounting systems in order for such systems to properly
recognize  and  perform  date  calculations  in the year  2000 (the  "year  2000
issue").  The  Company  spent  approximately  $400,000  in 1998 and  anticipates
spending another $100,000 in 1999 for additional hardware, upgraded software and
consulting  time to enable the Company to properly  address the year 2000 issue.
The  expected  cost to fix the year  2000  issue is in line  with the  Company's
original  estimates.  While  the  consequences  of  an  incomplete  or  untimely
resolution of the year 2000 issue could have a significant impact on the Company
finalizing  laboratory  results,  properly billing the numerous  different payor
groups and gathering and reporting  payroll,  accounting  and other employee and
financial information,  the Company believes that it will adequately resolve the
year 2000 issue. The Company believes that modifications to laboratory  software
and  equipment  and most  accounting  systems have been  completed and the final
modifications to the billing and payroll systems will be completed by the end of
the  first  quarter  1999 in  order  to  provide  sufficient  time  for  further
modifications, if any, prior to the arrival of the year 2000.

         As part of its contingency  planning,  the Company has standardized the
platform and software used to process and report  laboratory  results during the
last several years. In addition,  the Company  converted the last billing system
not on the Company's  standard  billing  platform in 1998. If a problem occurred
with the  laboratory  hardware or  software,  the Company  might have to rely on
outside  reference  laboratories to process  specimens until the year 2000 issue
was fixed. If the Company had to rely on another  location or outside  reference
laboratory  to process  specimens,  turn  around time on test  results  would be
diminished  and  billings  and  cash  collections  from  payor  groups  could be
significantly  delayed.

         The  Company  is  reliant  on  the ability of  numerous payor  groups,
primarily  insurance  companies  and government  payors, to  solve  their  year
2000 issue in order to process the Company's  billings and make appropriate cash
remittances.  If such  payor  groups do not  properly  resolve  their  year 2000
issues,  cash  collections  could be  significantly  delayed.  In addition,  the
Company  sends less than 2% of its specimens to outside  reference  laboratories
for  testing  and does not  believe it would  have  difficulty  finding  another
reference laboratory to perform such tests if its current main vendor encounters
difficulties  with the year 2000 issue.  The  Company has asked all  significant
vendors  to report in  writing  to the  Company on the status of their year 2000
issue and whether their systems will be compliant in sufficient  time to satisfy
the  Company's  current  requirements  and  workflow.  The Company  reviews such
reports  regularly  and makes  modifications  to its own  planning  process,  if
necessary, based on the reports received from vendors.

Seasonality

         The Company's  operations  experience  seasonal trends that the Company
believes  affect all clinical  laboratory  companies.  Testing volume  generally
tends to be lower during the holiday seasons and, to a lesser extent,  inclement
weather.  As a result,  because a substantial  portion of the Company's expenses
are relatively  fixed over the short term, the Company's  operating  income as a
percentage of revenue tends to decrease  during the fourth quarter of each year,
mainly due to the Christmas and Thanksgiving holidays.

Inflation

         Inflation  was not a material  factor in either  revenue  or  operating
expenses during the periods presented.

Forward Looking Statement

         Each of the  statements in this Annual Report which are not  historical
facts may be deemed to be forward  looking  statements.  These  forward  looking
statements  contain risks and  uncertainties  and are subject to change based on
various competitive, regulatory,  reimbursement, systems and other developments,
that could cause the  outcome  noted in such  forward  looking  statement  to be
materially  different.  Further information on various factors that could affect
the Company's  financial  results is included in the Company's Form 10-K for the
year ended December 31, 1998.

<PAGE>
<TABLE>
                            Statements of Operations

                 (amounts in thousands, except per share data)
<CAPTION>
- ----------------------------------------------------------------------------------------
                                                    For the years ended December 31,
                                                     1998           1997       1996
- ----------------------------------------------------------------------------------------
<S>                                                 <C>         <C>          <C> 
Revenue                                              $217,370    $214,001     $205,217
- ----------------------------------------------------------------------------------------
Direct Laboratory and Field Expenses:
  Salaries, wages and benefits                         67,742      69,094       70,869
  Supplies                                             30,671      29,858       28,631
  Other operating expenses                             53,594      56,990       54,672
- ----------------------------------------------------------------------------------------
                                                      152,007     155,942      154,172

Legal and acquisition related charges                     --           --        4,940
Restructuring charges                                     --           --       65,655
Amortization and depreciation                           7,592       8,885       11,491
Selling, general and administrative expenses           33,530      34,570       41,801
- ----------------------------------------------------------------------------------------
   Total Operating Expenses                           193,129     199,397      278,059
- ----------------------------------------------------------------------------------------
Operating Income (Loss)                                24,241      14,604      (72,842)
Other Income (Expenses):
Third party interest, net                            (13,538)     (14,068)     (13,401)
Related party interest, net                               --           --        1,279
Loss on sale of promissory note                           --           --       (4,529)
- ----------------------------------------------------------------------------------------
Total Other Income (Expenses)                        (13,538)     (14,068)     (16,651)
- ----------------------------------------------------------------------------------------
Income (Loss) Before Income Taxes
and Extraordinary Item                                10,703          536      (89,493)
Tax Provision                                             --           --          --
- ----------------------------------------------------------------------------------------
Income (Loss) Before Extraordinary Item               10,703          536      (89,493)
Extraordinary Item - loss on early
extinguishment of debt                                    --           --        3,451
- ----------------------------------------------------------------------------------------
Net Income (Loss)                                    $10,703         $536      $(92,944)
- ----------------------------------------------------------------------------------------
Preferred Stock Dividends                                131          138           144
Net Income (Loss) Available to
Common Shareholders                                  $10,572         $398      $(93,088)
- ----------------------------------------------------------------------------------------
Basic Earnings Per Share:
Income (Loss) Before Extraordinary Item                $0.26         $0.01      $(2.43)
Extraordinary Item                                      --            --         (0.10)
Net Income (Loss)                                      $0.26         $0.01      $(2.53)
- ----------------------------------------------------------------------------------------
Diluted Earnings Per Share:
Income (Loss) Before Extraordinary Item                $0.25         $0.01      $(2.43)
Extraordinary Item                                      --            --         (0.10)
Net Income (Loss)                                      $0.25         $0.01      $(2.53)
- ----------------------------------------------------------------------------------------
<FN>
The accompanying notes are an integral part of these financial statements.
</FN>
</TABLE>
<PAGE>
<TABLE>
                                 Balance Sheets
                 (amounts in thousands, except per share data)
<CAPTION>
- ---------------------------------------------------------------------------------------
                                                                 December 31,
Assets                                                              1998        1997
<S>                                                         <C>                <C>
- ---------------------------------------------------------------------------------------
Current Assets:

Cash and cash equivalents                                     $20,137           $11,652

Accounts receivable, net of allowance
  for doubtful accounts  of $10,813 and $9,819
  in 1998 and 1997, respectively                               41,326            36,583

Inventory of supplies                                           3,055             2,811

Prepaid expenses and other current assets                       1,045             1,295
- ---------------------------------------------------------------------------------------
Total Current Assets                                           65,563            52,341
- ---------------------------------------------------------------------------------------
Property and Equipment, net                                    11,277            13,160

Goodwill, net of accumulated amortization of $7,754
and $6,368 in 1998 and 1997, respectively                      56,949            43,699

Other Intangible Assets, net                                    2,370            2,731

Other Assets                                                    6,301            6,769
- ---------------------------------------------------------------------------------------
                                                             $142,460           $118,700
- ---------------------------------------------------------------------------------------
Liabilities and Shareholders' Equity
- ---------------------------------------------------------------------------------------
Current Liabilities:

Current portion of long-term debt                              $1,206            $1,811

Accounts payable and accrued liabilities                       14,533            15,678

Accrued payroll and benefits                                    6,892             6,302
- ---------------------------------------------------------------------------------------
Total Current Liabilities                                      22,631            23,791
- ---------------------------------------------------------------------------------------
Long-Term Debt, net of current portion                        137,170           124,285

Other Liabilities                                               4,026             2,907

Commitments and Contingencies

Shareholders' Equity (Deficit):
Convertible preferred stock,
$.01 par value; Authorized - 20,000 shares;
   Issued and Outstanding - 364 at 
   December 31, 1998 and 1997
   Liquidation preference -- $2,093                                4                 4

Common stock, $.01 par value; 
Voting - Authorized - 100,000 shares; 
Issued and Outstanding - 40,708 and 40,578 at
December 31, 1998 and 1997, respectively                          407               406

Additional paid-in capital                                    228,395            228,052

Accumulated deficit                                          (250,173)          (260,745)
- ---------------------------------------------------------------------------------------
Total Shareholders' Equity (Deficit)                          (21,367)           (32,283)
- ---------------------------------------------------------------------------------------
                                                             $142,460           $118,700
- ---------------------------------------------------------------------------------------
<FN>
The accompanying notes are an integral part of these financial statements.
</FN>
</TABLE>
<PAGE>
<TABLE>
                  Statements of Shareholders' Equity (Deficit)

              For the years ended December 31, 1998, 1997 and 1996
                 (amounts in thousands, except per share data)
<CAPTION>

                                                                      Voting
                                                                   Common Stock
                                                              Shares         Amount
<S>                                                         <C>              <C>
- --------------------------------------------------------------------------------------
Balances, December 31, 1995                                  35,052           $  351
- --------------------------------------------------------------------------------------
Issuance of shares in connection
with a prior acquisition                                        413                4

Restricted shares issued to employees                           100                1

Issuance of shares for Company's
401(k) plan matching contributions                              434                4

Issuance of shares to certain executives
in lieu of monthly cash compensation                            164                2

Issuance of shares to a consultant for services rendered         50                1

Issuance of shares to certain Board Directors
for services rendered                                            22               --

Conversion of non-voting common stock
to voting common stock                                        1,050               10

Issuance of preferred stock dividend -- $0.36 per share         --                --
Net loss                                                        --                --
- --------------------------------------------------------------------------------------
Balances, December 31, 1996                                  37,285              373
- --------------------------------------------------------------------------------------
Restricted shares issued to employees                            15               --

Restricted shares forfeited by employees                        (20)              --

Issuance of shares for Company's 401(k)
plan matching contributions                                      29               --

Issuance of shares to certain Board

Directors for services rendered                                  84                1

Conversion of preferred stock to common stock                    36               --

Issuance of shares at $0.625 upon exercise
of stock options                                                 75                1

Issuance of shares to the Company's former 
CEO in connection with CEO's resignation                        500                5

Shares sold to the Company's former CEO
pursuant to transition agreements in connection
with CEO's resignation                                          533                5

Shares sold to Company's current CEO
pursuant to an employment agreement                           1,143               12

Issuance of shares to Company's current CEO
as bonus pursuant to an employment agreement                    229                2

Shares sold to a Board Director pursuant to
the 1997 Directors' Stock Purchase Plan                         500                5

Issuance of shares to employees as special 
year-end bonus                                                  169                2

Issuance of preferred stock dividend -- $0.36 per share          --               --

Net income                                                       --               --
- --------------------------------------------------------------------------------------
Balances, December 31, 1997                                  40,578             $406
- --------------------------------------------------------------------------------------
Issuance of shares to certain Board Directors
for services rendered                                            72               1

Issuance of shares at $0.63 - $2.19 upon
exercise of options                                              19               --

Issuance of shares for Company's 401(k)
plan matching contributions                                      14               --

Restricted shares issued to employees                            17               --

Issuance of shares to part-time employees
as special bonus                                                 8                --

Issuance of preferred stock dividend -- $0.36 per share          --               --

Net income                                                       --               --
- --------------------------------------------------------------------------------------
Balances, December 31, 1998                                  40,708             $407
- --------------------------------------------------------------------------------------
<FN>
The accompanying notes are an integral part of these financial statements.
</FN>
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
  Non-Voting        Convertible        Additional
 Common Stock     Preferred Stock      Paid-In        Accumulated       Total Shareholders'
Shares   Amount   Shares   Amount      Capital        Deficit           Equity (Deficit)
<S>     <C>       <C>      <C>         <C>            <C>                  <C>
1,050    $10       400      $4          $224,020       $(168,055)            $56,330
- --       --        --       --               996              --               1,000
- --       --        --       --               350              --                 351
- --       --        --       --               544              --                 548
- --       --        --       --               108              --                 110
- --       --        --       --               43               --                  44
- --       --        --       --               17               --                  17
(1,050)  (10)      --       --               --               --                  --
- --       --        --       --               --              (144)              (144)
- --       --        --       --               --           (92,944)           (92,944)
- --       $--       400      $4          $226,078        $(261,143)          $(34,688)
- --       --        --       --               237              --                 237
- --       --        --       --               (45)             --                (45)
- --       --        --       --                49              --                  49
- --       --        --       --                63              --                  64
- --       --        (36)     --                --              --                  --
- --       --        --       --                46              --                  47
- --       --        --       --               214              --                 219

- --       --        --       --               295              --                 300
- --       --        --       --               488              --                 500
- --       --        --       --                98              --                 100
- --       --        --       --               276              --                 281
- --       --        --       --               253              --                 255
- --       --        --       --                --             (138)             (138)
- --       --        --       --                --              536                536
- --       $--       364      $4          $228,052        $(260,745)          $(32,283)
- --       --        --       --               159               --                160
- --       --        --       --                15               --                 15
- --       --        --       --                25               --                 25
- --       --        --       --               132               --                132
- --       --        --       --                12               --                 12
- --       --        --       --                --             (131)              (131)
- --       --        --       --                --           10,703             10,703
- --       $--       364      $4          $228,395        $(250,173)          $(21,367)
</TABLE>
<PAGE>
<TABLE>
                            Statements of Cash Flows
                                 (in thousands)
<CAPTION>
- -----------------------------------------------------------------------------------------------
                                                          For the years ended December 31,
                                                          1998           1997           1996
- -----------------------------------------------------------------------------------------------
<S>                                                      <C>           <C>            <C> 
Cash Flows From Operating Activities:
Net income (loss)                                         $10,703         $536         $(92,944)
Adjustments to reconcile net income
(loss) to net cash
provided (used) by operating activities:
  Amortization and depreciation                             7,592        8,885           11,491
  Provision for doubtful accounts                          15,662       15,663           14,180
  Loss on sale of promissory note                              --           --            4,529
  Writeoff of goodwill and customer lists                      --           --           61,645
  Extraordinary item - loss on early
  extinguishment  of debt                                      --           --            3,451
Net changes in assets and liabilities
affecting operations,  net of acquisitions:
  Increase in Accounts receivable                         (17,154)      (14,967)        (11,125)
  Increase in Inventory of supplies                         (106)          (207)           (243)
  Decrease in Prepaid expenses and
  other current assets                                       250            407             117
  (Increase) decrease in Other assets                       (112)        (1,107)            229
  Increase (decrease) in Accounts payable and
  accrued liabilites                                      (4,047)        (7,221)          1,112
  Increase in Accrued payroll and benefits                   800            816           1,504
  Other                                                      408            910             926
- -----------------------------------------------------------------------------------------------
Net cash provided (used) by operating activities          13,996          3,715          (5,128)
- -----------------------------------------------------------------------------------------------
Cash Flows From Financing Activities:
Borrowings under third party debt                             --             --          123,490
Payments of third party debt                              (1,720)        (1,776)        (104,772)
Financing costs under the Senior Notes
and Receivables Financing                                     --             --           (4,932)
Proceeds from the sale of stock                               --            581               --
Proceeds from exercise of options                             15             47               --
Other                                                        (131)         (236)              --
- -----------------------------------------------------------------------------------------------
Net cash provided (used) by financing activities           (1,836)       (1,384)          13,786
- -----------------------------------------------------------------------------------------------
Cash Flows From Investing Activities:
Capital expenditures                                       (3,005)       (1,935)          (3,948)
Payments for acquisitions, net of cash acquired              (670)       (1,824)          (2,700)
Net cash proceeds from sale of equity
investment and promissory note                                 --           --            11,000
- -----------------------------------------------------------------------------------------------
Net cash provided (used) by investing activities           (3,675)       (3,759)           4,352
- -----------------------------------------------------------------------------------------------
Net Increase (Decrease) in Cash
and Cash Equivalents                                        8,485        (1,428)          13,010
Cash and Cash Equivalents - Beginning of Year              11,652        13,080               70
- -----------------------------------------------------------------------------------------------
Cash and Cash Equivalents - End of Year                   $20,137       $11,652          $13,080
- -----------------------------------------------------------------------------------------------
<FN>
The accompanying notes are an integral part of these financial statements.
</FN>
</TABLE>
<PAGE>

Notes to Financial Statements

1.       Description of the Company and Significant Accounting Policies

a.       Description of the Company

         Unilab  Corporation  ("Unilab"  or  the  "Company")  provides  clinical
laboratory testing services to physicians, managed-care organizations, hospitals
and other health care providers primarily in the State of California.

b.       Inventory of Supplies

         Inventories, which consist principally of purchased clinical laboratory
supplies, are valued at the lower of cost (first-in, first-out) or market.

c.       Revenue Recognition

         Revenue  is  recognized  at the  time  the  service  is  provided.  The
Company's revenue is based on amounts billed or billable for services  rendered,
net of contractual  adjustments  and other  arrangements  made with  third-party
payors to provide services at less than established billing rates.

d.       Use of Estimates

         The preparation of the financial statements requires management to make
estimates  and  assumptions  that  effect  the  reported  amounts  of assets and
liabilities  and disclosure of contingent  assets and liabilities at the date of
the financial statements and the reported amounts of revenue and expenses during
the reporting period. Actual results could differ from these estimates. The most
significant  estimates  with  regards to these  financial  statements  relate to
accounts receivable and insurance reserves.

         The  Company's  net accounts  receivable  balance is  determined  after
deductions for contractual adjustments, which are estimated based on established
billing  rates made with third  party  payors,  and an  allowance  for  doubtful
accounts,  which  primarily is based on the aging of the accounts and historical
collection  experience.  In addition,  the Company accrues for both asserted and
unasserted  claims  arising from workers  compensation  (1994 and 1995 only) and
automobile  liability  losses  (1994  through  1997 only).  The  estimate of the
liability for unasserted claims arising from unreported incidents is based on an
analysis of historical claims experience.

e.       Fair Value of Financial Instruments and Concentration of Credit Risk

         The carrying amount  reported in the balance sheets for cash,  accounts
receivable,  accounts payable and accrued  liabilities  approximates  fair value
because of the immediate or short-term maturity of these financial  instruments.
The fair value of the  Company's  $120.0  million of senior  notes  approximates
$125.4  million  based on quotes from  brokers.  The Company  believes  that its
non-bank  indebtedness  approximates fair value based on current yields for debt
instruments of similar quality and terms.

         Concentration  of credit risk with respect to accounts  receivable  are
limited due to the diversity of the Company's client base. However,  the Company
provides  services to certain  patients covered by various  third-party  payors,
including the Federal and California Medicare/Medicaid programs. Revenue, net of
contractual  allowances,  from direct  billings  under  Federal  and  California
Medicare/Medicaid  programs  during each of the years ended  December  31, 1998,
1997 and 1996 approximated 25-30% of revenue.

f.       Property and Equipment

         Property and  equipment  are stated at cost and  depreciated  using the
straight-line  method over the  estimated  useful  lives of the related  assets.
Buildings are depreciated over 28 years,  laboratory and computer  equipment are
generally  depreciated  over 7 and 3  years,  respectively,  and  furniture  and
fixtures are  depreciated  over 5 years.  Leasehold  improvements  are amortized
using the  straight-line  method over the remaining  term of the related  lease.
Major repairs  which extend the life or add value to equipment  are  capitalized
and depreciated over their remaining useful life.

g.       Goodwill

         Goodwill  represents  the  excess  of cost  over the fair  value of net
tangible and identifiable  intangible assets acquired and is amortized using the
straight-line  method.  Goodwill  is  amortized  over 40 years for  acquisitions
completed  prior to January  1, 1995.  Effective  January 1, 1995,  the  Company
changed its estimate of amortization  arising from acquisitions  completed after
that date to a 20 year period. At each balance sheet date, the Company evaluates
the  realizability  of  goodwill  based  upon  the  Company's   expectations  of
undiscounted  cash flows from each  operating  unit  having a material  goodwill
balance.  Goodwill is adjusted, if necessary,  if such analysis indicates that a
permanent  decline in value below the current  unamortized  historical  cost has
occurred.

h.       Other Intangible Assets

         Customer  lists and  covenants  not to compete are recorded at cost and
are amortized utilizing the straight-line method over the estimated lives of the
assets, generally 10 years for customer lists and 3-5 years for covenants not to
compete.  The cost of other  intangible  assets is  evaluated  periodically  and
adjusted,  if  necessary,  if later  events and  circumstances  indicate  that a
permanent  decline in value below the current  unamortized  historical  cost has
occurred.

i.       Income Taxes

         The Company  recognizes  deferred  tax assets and  liabilities  for the
expected future tax consequences of temporary  differences between the basis for
financial reporting purposes and the basis for tax purposes,  in accordance with
Statement of Financial Accounting Standards No. 109 ("FAS 109"), "Accounting for
Income Taxes".

j.       Earnings Per Common Share

         In February  1997,  the  Financial  Accounting  Standards  Board issued
Statement of Financial Accounting  Standards No. 128 ("FAS 128"),  "Earnings Per
Share", which requires the disclosure of a basic and diluted earnings per share.
The  implementation  of FAS 128 had no impact on the calculation of earnings per
share previously reported for the year ended December 31, 1996.

         Basic  earnings per common share has been  computed by dividing the net
income (loss) less preferred  dividends by the weighted average number of common
shares  outstanding for each period  presented.  The weighted  average number of
common  shares  used in the  calculation  of basic  earnings  per share was 40.7
million,  39.9 million and 36.8  million for the years ended  December 31, 1998,
1997, and 1996, respectively.

         Diluted  earnings per share  includes the effect of  additional  common
shares that would have been outstanding if dilutive  potential common shares had
been  issued plus a reduction of interest expenses assuming conversion of the
convertible debt. No dilutive securities existed in 1996. In 1997, the weighted
average number of dilutive stock options were 0.6 million,  which had
no effect on the basic  earnings per share  calculation.  In 1998,  the weighted
average  number of dilutive  stock options were 1.4 million and the  incremental
shares from the assumed conversion of the $14.0 million subordinated convertible
note were 0.7 million,  which reduced the  earnings per share calculated by
$0.01.  The assumed  conversion of the  convertible  preferred stock is excluded
from the calculation since its effect would be immaterial.

         Options  to  purchase  2.1 and 2.9  million  shares of common  stock at
prices  ranging  from  $2.63 to $6.88 and  $1.19 to $6.88  were  outstanding  at
December  31,  1998  and  1997,  respectively,  but  were  not  included  in the
computation  of diluted  earnings per share because the options' exercise price
was greater than the average  market price for the year of the Company's  common
shares.

k.       Cash and Cash Equivalents

         For the purpose of the statement of cash flows,  the Company  considers
all highly  liquid  investments  purchased  with an  original  maturity of three
months or less to be cash equivalents.


2.       Property and Equipment, Net and Other Intangible Assets

         Property and equipment, net consists of the following:

                                                  December 31,
(in thousands)                              1998              1997
- -------------------------------------------------------------------------------
Buildings                                  $3,166            $3,166
Leasehold improvements                      5,564             5,236
Laboratory and other equipment             30,053            29,700
Furniture and fixtures                      3,459             3,391
- -------------------------------------------------------------------------------
                                           42,242            41,493
- -------------------------------------------------------------------------------
Less accumulated depreciation
     and amortization                      30,965            28,333
- -------------------------------------------------------------------------------
                                          $11,277           $13,160
- -------------------------------------------------------------------------------

Depreciation  expense was  approximately  $5.0 million in 1998, $6.0 million in
1997 and $5.0 million in 1996.

Other intangible assets consist of the following:

                                               December 31,
(in thousands)                           1998              1997
- -------------------------------------------------------------------------------
Customer lists                         $7,675            $7,675
Covenants not to compete                  235               300
                                        7,910             7,975
- -------------------------------------------------------------------------------
Less accumulated amortization           5,540             5,244
                                       $2,370            $2,731
- -------------------------------------------------------------------------------

Amortization  expense for goodwill,  other  intangible  assets and certain other
deferred costs was approximately  $2.6 million in 1998, $2.9 million in 1997 and
$6.5 million in 1996.

3.       Acquisitions

         On  September  16,  1998,  the  Company  and Meris  Laboratories,  Inc.
("Meris")   signed  an  asset  purchase   agreement   whereby  Unilab   acquired
substantially  all of the assets of Meris. The agreement was approved on October
28, 1998 by the United States  Bankruptcy  Court in Los Angeles,  California and
Unilab took  possession  of the  acquired  net assets on  November 5, 1998.  The
purchase  price  consisted  of  the  issuance  of a  $14.0  million  convertible
subordinated  note,  $2.5 million in cash payable in  seventy-two  equal monthly
installments  and the  assumption  of net  assets  of $3.5  million,  consisting
primarily of accounts  receivable.  The  acquisition was accounted for under the
purchase  method of accounting  and the  statements  of  operations  include the
results of Meris since November 5, 1998.

         The purchase price was allocated to the assets  acquired based on their
fair value at the date of  acquisition  and the  difference  between the cost of
acquiring Meris and the fair value of the net assets  acquired of  approximately
$14.9  million was treated as goodwill for  accounting  purposes.  In connection
with the integration of the acquired Meris operations with those of Unilab,  the
Company  recorded  liabilities of $1.4 million,  primarily  related to severance
(for the  reduction in  headcount  of  approximately  230  employees)  and other
employee related liabilities.  At December 31, 1998,  approximately $1.3 million
of  liabilities,  expected  to be paid in the  first six  months  of 1999,  were
outstanding.

         The following  unaudited pro forma results of operations  for the years
ended December 31, 1998 and 1997 (in thousands  except per share data) have been
prepared as if the acquisition of Meris occurred on January 1, 1997:

                                      Years Ended December 31,
                                          (Unaudited)
                                        1998             1997
- -------------------------------------------------------------------------------
Revenue                              $239,649         $243,904
- -------------------------------------------------------------------------------
Net Income                             16,371            5,859
- -------------------------------------------------------------------------------
Net income available to
     common shareholders               16,263            5,721
- -------------------------------------------------------------------------------
Earnings per share:        Basic         0.40             0.14
                           Diluted       0.37             0.14
- -------------------------------------------------------------------------------

         The historical  financial results of Unilab for 1998 and 1997 have been
adjusted  primarily for the historical results of Meris, an increase in interest
expense due to the  additional  debt incurred to purchase Meris, an increase in
amortization of goodwill and cost savings from the integration of the Meris
operations into Unilab.

The  unaudited  pro forma  information  presented  above does not  purport to be
indicative of the results that actually would have been obtained if the combined
operations  had  been  conducted  during  the  periods  presented  or of  future
operations of the combined operations.

4.       Restructuring Charges

         During the fourth  quarter of 1996,  the  Company  recorded  charges of
$65.7  million,  consisting of the  write-off of goodwill and customer  lists of
$61.7 million, and a reserve for managerial  restructuring expenses,  consisting
primarily of severance  related  expenses,  of $4.0  million.  The  write-off of
goodwill  and  customer  lists  principally  related  to two  of  the  Company's
laboratory  operations,  which had seen  decreasing  operating  results and cash
flows throughout 1996.

         The $4.0 million managerial restructuring expenses related primarily to
a  reduction  in  headcount  of  approximately   25  employees,   including  the
resignation  of the  Company's  then  Chairman,  President  and Chief  Executive
Officer in  January  1997.  Most  affected  employees  were  terminated  in late
December through mid January.  At December 31, 1998,  approximately $0.5 million
of liabilities were outstanding and such amount is expected to be paid in 1999.

5.       Legal and Acquisition Related Charges

         During the third quarter of 1996, the Company  recorded charges of $4.9
million,  primarily  related  to  settlements  reached  with the  United  States
("U.S.") Government, and certain other entities in connection with the Company's
sales,  marketing  and billing  practices.  The  Company  agreed to pay the U.S.
Government approximately $4.0 million to conclude an investigation of certain of
Unilab's  billings  to Medicare  and certain  other  governmental  entities  for
hematology  indices being billed in conjunction with complete blood counts.  The
Company has remaining  payments to the U.S.  Government of $500,000 due March 1,
1999 and approximately  $324,000 due on September 1, 1999. All deferred payments
to the U.S.  Government bear interest at approximately 5.2 percent. In addition,
Unilab paid the California  MediCal  program  approximately  $160,000 in October
1996 to settle all their claims concerning the same issue.

6.       Income Taxes

         For the years ended  December 31, 1998,  1997 and 1996,  income  (loss)
before income taxes consisted of domestic earnings (losses) and no provision for
Federal or State income taxes was recorded.

         A reconciliation between the actual income tax expense and income taxes
computed by applying the statutory  Federal  income tax rate to earnings  before
income taxes is as follows:

                                                   Years Ended December 31,
(in thousands)                            1998           1997          1996
- -------------------------------------------------------------------------------
Computed income taxes
   at U.S. statutory rate                $3,746          $188        $(31,601)
- -------------------------------------------------------------------------------
Amortization and write-
   off of goodwill and
   intangible assets disallowed
   for income tax purposes                  420           420           1,140
- -------------------------------------------------------------------------------
Capital and operating losses
   with no tax benefit                       -             -           30,461
- -------------------------------------------------------------------------------
Change in valuation allowance            (3,871)           -               -
- -------------------------------------------------------------------------------
Other                                      (295)         (608)             -
- -------------------------------------------------------------------------------
                                            $-            $-              $-
- -------------------------------------------------------------------------------

         Temporary differences  and  carryforwards,  excluding the capital loss
carryforward  discussed  below,  which give rise to deferred  tax assets are as
follows:

                                                    December 31,
(in thousands)                                 1998           1997

Bad debt reserve                             $2,972          $2,563
Intangible assets                             9,807          11,752
Property and equipment                          383             383
Accrued liabilities                           1,408           2,254
Net operating loss carryforwards             20,272          21,761
                                             34,842          38,713
Valuation allowance                         (34,842)        (38,713)
                                               $--             $--

         The  realization  of the  deferred  tax assets at December  31, 1998 is
dependent upon the Company having future taxable income.  A valuation  allowance
has been provided  against the entire deferred tax asset balance at December 31,
1998 and 1997.  Approximately  $4.0  million of benefit,  if any, to be recorded
from the  recognition  of the  deferred  tax assets  would  reduce the amount of
goodwill recorded from certain acquisitions.

         In  addition,  the Company has a capital  loss of  approximately  $36.5
million from the sale of an equity investmentin 1995. The capital loss can only
be utilized by the Company to the extent it offsets capital gains  generated.  A
valuation  allowance  has also been  entirely  provided  against  the  available
capital loss at December 31, 1998 and 1997.

         The Company has net operating loss and capital loss  carryforwards  for
tax purposes in the U.S.  which are  available to offset future  taxable  income
through  2012 and 2000,  respectively.  At  December  31,  1998,  available  net
operating  loss and  capital  loss  carryforwards  for U.S.  tax  purposes  were
approximately $60.0 million and $36.5 million,  respectively. Net operating loss
carryforwards  for  California  state  tax  purposes  were  approximately  $30.0
million.

7.       Loss on Sale of Promissory Note

         In November 1996, the Company sold a 100% participation interest in its
rights under a $15.0 million  promissory  note (which the Company  received upon
the sale of an equity  investment  in 1995) to a third party for $11.0  million.
The Company recorded a $4.5 million loss upon the sale, which reflected the $4.0
million loss in principal plus the write-off of accrued and unpaid interest from
July 1, 1996 through the sale date of $0.5 million.

8.       Long-Term Debt

Long-term debt consists of the following:

                                                   December 31,
(in thousands)                                   1998       1997
- -------------------------------------------------------------------
Senior Notes, interest at 11.0
percent payable semi-annually               $119,344      $119,253

Convertible subordinated
note, interest at 7.5 percent
payable semi-annually                         14,000            --

Obligation under capital lease
collateralized by land and building
with interest due through 2004                  2,867        3,054

Obligations under capital leases
collateralized by equipment with
interest due through 2000                       2,165        3,789
- -------------------------------------------------------------------
                                              138,376      126,096

Less -- current portion                         1,206        1,811
- -------------------------------------------------------------------
                                             $137,170     $124,285
- -------------------------------------------------------------------

         In March 1996,  the Company  completed an offering of $120.0 million of
senior notes (the "Senior  Notes").  The proceeds from the Senior Notes offering
were used to retire  outstanding  borrowings  under the Company's  then existing
bank term loan and revolving line of credit facility in the principal  amount of
$102.1 million,  plus accrued interest.  Interest on the Senior Notes is 11% and
is payable on April 1st and October 1st of each year.  The Senior  Notes are due
April 2006 and the Company is not required to make any  mandatory  redemption or
sinking fund payment with respect to the Senior Notes prior to maturity.

         In  connection   with  the  Senior  Notes  offering  and  the  accounts
receivable  financing  discussed below, the Company incurred  approximately $5.0
million of financing costs. The debt financing costs are deferred and amortized,
using the interest method, over the term of the related debt. Upon completion of
the Senior  Notes  offering,  the  Company  wrote-off  $3.5  million of deferred
financing  costs related to the Company's  previous credit facility in the first
quarter of 1996. The $3.5 million charge has been shown as an extraordinary loss
from the early extinguishment of debt in the statement of operations.

         The Senior  Notes were issued at a discount  of 99.242%  per note.  The
aggregate  discount on the Senior Notes approximated $0.9 million and is charged
to operations as additional  interest  expense over the life of the Senior Notes
using the  interest  method.  At December  31, 1998,  the  unamortized  discount
approximated $0.7 million.

         The Senior Notes are not redeemable prior to April 1, 2001, after which
the Senior Notes will be redeemable at any time at the option of the Company, in
whole or in part,  at various  redemption  prices as set forth in the  indenture
covering such Senior Notes (the "Indenture"),  plus accrued and unpaid interest,
if any, to the date of  redemption.  In addition,  at any time prior to April 1,
1999, the Company may redeem up to $42.0 million in aggregate  principal  amount
of the Senior  Notes with the net  proceeds of one or more public  offerings  of
common stock of the  Company,  at a  redemption  price of 110% of the  principal
amount  thereof,  plus accrued and unpaid  interest,  if any, to the  redemption
date.

         In the event of a change  in  control,  as  defined  in the  Indenture,
holders  of the  Senior  Notes  will have the right to  require  the  Company to
purchase  their  Notes,  in whole or in  part,  at a price  equal to 101% of the
aggregate principal amount thereof, plus accrued and unpaid interest, if any, to
the date of purchase.

         The Notes are  general  unsecured  obligations  of the Company and rank
pari  passu in right of  payment  with all  unsubordinated  indebtedness  of the
Company.  In addition,  the Indenture limits the ability of the Company to incur
additional indebtedness, under certain circumstances.

         In connection  with the  acquisition of Meris (see Note 3), the Company
issued a $14.0 million  convertible  subordinated  note, bearing interest at the
rate of 7.5%,  payable in cash or in kind, at the  Company's  option (other than
the  interest  payment  due in  November  2006,  which will be payable in cash).
Interest  is  payable  on  May 5 and  November  5 of  each  year.  The  note  is
subordinated to the Senior Notes and is due in November 2006.

         The note is convertible into the Company's common stock at a conversion
price of $3.00 per share;  however,  the holder of such note cannot exercise its
conversion right unless the Company's  average stock price during the thirty day
trading period preceding an offer to convert is equal to or greater than $3.60 a
share (the "Offer  Date").  The holder of the note can convert up to one-half of
the note during the first four years;  any  outstanding  balance after  November
2002 may be converted by the holder through the maturity  date. The Company,  at
its option,  can force conversion of the note, in whole or in part, at any Offer
Date.

         In addition,  at the  Company's  option,  the note may be redeemed,  in
whole or in part,  at any Offer Date;  provided that the holder of such note may
exercise its  conversion  right to the extent noted in the  preceding  paragraph
rather than being redeemed.  The redemption  price would equal the face value
of the note being redeemed  times a premium  percentage (the  average  stock
price  during the specified  period  divided  by  $3.00).  If the note has not
been  converted  or redeemed  prior to maturity,  the remaining note balance
will be paid in cash at the then outstanding principal amount of the note.  In
the event of a change in control, as defined in the Note, the outstanding
principal amount of the Note shall be automatically converted into shares of
the Company's common stock.

         In July 1996,  the Company  entered into an agreement  with a financial
institution  whereby it can sell  accounts  receivable  up to a maximum of $20.0
million.  As collections  reduce accounts  receivables which have been sold, the
Company  may sell new  receivables  to bring the amount  sold up to a maximum of
$20.0 million.

         As of  December  31,  1998,  the  Company  had not  sold  any  accounts
receivable  under  this  agreement.  Sales of  receivables,  if any,  under  the
facility are subject to a liquidity and debt service coverage ratio. The Company
was in compliance  with such  covenants in 1998.  The  termination  date for the
agreement is July 1999.  If the facility  terminates  prior to July 1999 for any
reason,  the Company is obligated  to pay a $200,000  early  termination  fee. A
commitment fee of 1/2 percent is required on the unused portion of the available
facility. The Company retains collection and administrative  responsibilities on
the  receivables  sold  as  agent  for  the  purchaser.  In  addition,  accounts
receivable sold, if any, will be reflected as a reduction of accounts receivable
in the balance  sheet.  The full amount of the allowance  for doubtful  accounts
will be retained because the Company will retain  substantially the same risk of
credit loss as if the receivables had not been sold.

         At December 31, 1998, future scheduled  principle payments of long-term
debt are as follows (in thousands):

    Years Ended December 31,
- -------------------------------------
1999                         $1,206
2000                          1,557
2001                            442
2002                            562
2003                            706
Thereafter                  133,903
- -------------------------------------
                           $138,376
- -------------------------------------

9.      Capital Shares, Stock Options and Warrants

a.      Convertible Preferred Stock

        As of December 31, 1998, the Company has authorized 20,000,000 shares of
preferred  stock at $.01 par value.  The Board of  Directors of the Company will
determine,  among other things,  the number of shares,  voting rights,  dividend
rates, liquidation preferences, and redemption and conversion privileges of each
series of such preferred stock. As of December 31, 1998,  18,600,000  shares for
which no series has been designated were authorized and unissued.

         The  Company  has  364,000  shares  of  convertible   preferred   stock
outstanding at December 31, 1998. Holders of the convertible preferred stock are
entitled to  receive,  when and as  declared  by the Board of  Directors  of the
Company,  cumulative  dividends  at an annual  rate of $0.36 per share,  payable
semiannually on June 30 and December 30 in each year. The convertible  preferred
stock is  convertible  on a share for share basis into  shares of the  Company's
common stock,  at the holder's  option,  at any time from and after November 10,
1996.  36,000 shares of preferred shares were converted into common stock during
1997. In addition,  the convertible preferred stock has a liquidation preference
of $5.75 per share and the  Company  has the right at its sole  option to redeem
the  shares  any time  after  November  10,  1998,  in  whole  or in part,  at a
redemption  price of $5.75 per share plus an amount  equal to all  declared  and
unpaid dividends thereon to the redemption date.

b.       Non-Voting Common Stock

         At the Company's May 1996 annual meeting of stockholders,  an amendment
to the  Company's  Certificate  of  Incorporation  was  approved  and adopted by
stockholders  permitting the holder of all the 1,050,000  outstanding  shares of
the Company's non-voting common stock to convert such shares into regular voting
common stock.  In July 1996, all of the outstanding  shares of non-voting  stock
were converted into shares of the Company's  voting common stock on a share for
share basis.

c.       Restricted Stock

         The Company granted 17,000 restricted shares,  15,000 restricted shares
and 99,500  restricted shares of common stock to certain employees at no cost in
1998,  1997 and 1996,  respectively.  The  outstanding  restricted  shares  vest
ratably  each year on their  anniversary  date and become  fully  vested after a
period of two to five  years.  The cost of the  restricted  shares  based on the
shares' fair market value at the award dates, is charged to shareholders' equity
and subsequently amortized against earnings over the vesting period. At December
31, 1998, 260,834 restricted shares were outstanding and approximately $132,000,
$192,000  and  $351,000  was  amortized  to  expense  in 1998,  1997  and  1996,
respectively.

d.       Stock Options

         Employee Stock Option Plan 

         In 1996, the Company's shareholders approved the adoption of the Unilab
Corporation Stock Option and Performance Incentive Plan (the "1996 Option Plan")
which effectively  replaced and superseded both the Stock Option Program for Key
Executives (the "Key Executive Plan") and a stock option plan for the benefit of
a broad base of Company employees (the "1995  Option  Plan").  The 1995 Option
Plan was  amended  to discontinue grants under that plan.  The 1996  Option 
Plan  provides  one comprehensive  plan for all employees and all future grants
to employees will be made under the 1996 Option Plan.

         Under the  terms of the 1996  Option  Plan,  incentive  stock  options,
non-statutory  stock  options,  reload  options  or rights,  stock  appreciation
rights, restricted or unrestricted shares of Unilab stock, performance shares or
units and tax offset payments can be granted to any of the Company's  employees,
with limited  exceptions,  and options for a maximum of 4,000,000  shares of the
Company's common stock may be granted.  No employee may receive annual awards of
or relating to more than 250,000 shares of Unilab common stock.

         The 1996 Option  Plan is  administered  by a committee  of the Board of
Directors  (the  "Administrator").  The  number of  options  or awards  granted,
exercise  price,  vesting and term will be determined by the  Administrator.  At
December 31, 1998, and 1997, 3,016,999 and 2,202,334 options, respectively, were
outstanding  under the  aggregate of the 1996 Option Plan,  the 1995 Option Plan
and the Key Executive Plan.

Stock Program for Directors

         In April  1997,  the Company  reserved  1,500,000  shares  under a plan
whereby  members of the Company's  Board of Directors may purchase common shares
at the then  current  market  price of the  shares  (the "1997  Directors  Stock
Purchase  Plan").  500,000  shares were  purchased in 1997 and 1,000,000  shares
remain  outstanding under the 1997 Directors Stock Purchase Plan at December 31,
1998.

         In 1996, the Company's shareholders approved the adoption of the Unilab
Corporation Non-Employee Directors Stock Plan (the "1996 Directors Plan"), which
effectively replaced the Stock Option Program for Directors (the "1995 Directors
Plan").

         Under the terms of the 1996 Directors Plan, each outside  director will
receive an annual option grant of 10,000 shares and an additional  annual option
grant of 10,000  shares will be awarded to each  outside  director who serves as
the chairman of a committee or committees of the Board of Directors.  50 percent
of options granted under the 1996 Directors  Plans are  exercisable  immediately
and 50 percent are exercisable in one year.

         At  December   31,  1998  and  1997,   255,000  and  200,000   options,
respectively,  were  outstanding  under  the  aggregate  of the  1996  and  1995
Directors Plans.

Other

         Prior to the adoption of the 1996 Option Plan  and the 1996  Directors
Plan, the Company's Board of Directors also authorized the grant of nonqualified
stock options to individuals.

         Information regarding the Company's stock option plans and nonqualified
stock  options as of December 31, 1996,  1997 and 1998,  and changes  during the
years ending on those dates is summarized as follows:

                                                          Weighted-Average
                                        Shares             Exercise Price
- --------------------------------------------------------------------------
December 31, 1995                     3,478,500               $5.40
- --------------------------------------------------------------------------
Granted                                 681,500                2.11
Exercised                                  --                   --
Forfeited                              (280,500)               5.56
- --------------------------------------------------------------------------
December 31, 1996                     3,879,500               $4.73
- --------------------------------------------------------------------------
Granted                               1,751,000                0.62
Exercised                               (75,000)               0.63
Forfeited                              (999,166)               4.76
- --------------------------------------------------------------------------
December 31, 1997                     4,556,334                3.21
- --------------------------------------------------------------------------
Granted                                 949,500                2.00
Exercised                               (19,500)               0.79
Forfeited                              (170,835)               4.05
- --------------------------------------------------------------------------
December 31, 1998                     5,315,499               $2.94
- --------------------------------------------------------------------------

         In addition,  105,000  options were  repriced  from a weighted  average
price of $5.16 to $2.19 during  1996.  The options  outstanding  at December 31,
1998 expire in various  years  through  the year 2008.  Options  exercisable  at
December  31,  1998,  1997 and 1996 were  3,804,997,  2,940,907  and  3,049,255,
respectively.

         The weighted  average fair value of options  granted during 1998,  1997
and 1996 were  $1.55,  $0.55 and  $1.90,  respectively.  The fair  value of each
option grant is estimated  on the date of grant using the  Black-Scholes  option
pricing model with the following weighted average assumptions used for grants in
1998, 1997 and 1996, respectively:  risk-free interest rates of 5.8 percent, 6.9
percent and 6.1 percent;  expected lives of 9.08 years,  9.09 years, 8.49 years;
expected  volatility  of 64.2  percent,  91.7  percent  and 95.6  percent and no
dividends would be issued during the option terms.

         Information  about stock options  outstanding  at December 31, 1998, is
summarized as follows:

                              Options Outstanding
- -----------------------------------------------------------------------------
                                            Weighted-
                           Number           Average           Weighted-
Range of                   Outstanding      Remaining         Average
Exercise Prices            at 12/31/98      Contracted Life   Exercise Price
- -----------------------------------------------------------------------------
$0.438 to $2.0             2,124,250         7.8 years          $0.90
$2.063 to $4.0             1,117,333         8.1 years          $2.16
$4.125 to $6.875           2,073,916         5.2 years          $5.46
- -----------------------------------------------------------------------------
                           5,315,499         6.9 years          $2.94
- -----------------------------------------------------------------------------
                               Options Outstanding
- -----------------------------------------------------------------------------
                           Number           Weighted-
Range of                   Exercisable      Average
Exercise Prices            at 12/31/98      Exercise Price
- -----------------------------------------------------------------------------
$0.438 to $2.0             1,277,415        $0.84
$2.063 to $4.0               468,666        $2.26
$4.125 to $6.875           2,058,916        $5.47
- -----------------------------------------------------------------------------
                           3,804,997        $3.52
- -----------------------------------------------------------------------------

         The  Company  accounts  for its stock  option  plans  under  Accounting
Principle  Board  Opinion No. 25,  "Accounting  for Stock Issued to  Employees,"
under which no compensation cost has been recognized.  Had compensation cost for
the Company's  stock option plans been  determined  consistent with Statement of
Financial Accounting Standards No. 123 ("FAS 123"),  "Accounting for Stock-Based
Compensation,"  the  Company's net income and earnings per share would have been
reduced to the following pro forma amounts:

                                              Years Ended December 31,
(in thousands)                           1998          1997           1996
- -----------------------------------------------------------------------------
Net income          As Reported          $10,703        $536         $(92,944)
(loss)              Pro Forma            $9,423        $(508)        $(94,391)
- -----------------------------------------------------------------------------
Net income
(loss)              As Reported          $0.25         $0.01           $(2.53)
per diluted share    Pro Forma           $0.22        $(0.01)          $(2.57)
- -----------------------------------------------------------------------------

         Because  the FAS 123  method  of  accounting  has not been  applied  to
options  granted prior to January 1, 1995, the resulting  compensation  cost may
not be representative of that to be expected in future years.

e.       Stockholder Protection Rights Plan

         In February 1994, the Company adopted a stockholder  Protection  Rights
Plan, which was amended and restated in February 1996 ("Rights Plan").  Pursuant
to the Rights  Plan, a dividend of one Right for each  outstanding  share of the
Company's  common stock was issued to  shareholders of record on March 15, 1994.
Under  certain  conditions,   each  Right  may  be  exercised  to  purchase  one
one-hundredth of a share of Series A Junior  Participating  Preferred Stock at a
price of $22.50 for each share of common stock held. The Rights are  exercisable
until 10 days  after a person  or group  acquires  15% or more of the  Company's
common stock or announces a tender or exchange offer,  the consummation of which
would  result  in  ownership  by  such  person  or  group  of 15% or more of the
Company's common stock. If thereafter, a person or group acquires 15% or more of
Unilab's  outstanding  Common  Stock,  each Right will entitle its holder (other
than  such  person  or  members  of such  group)  to  purchase,  at the  Right's
then-current  purchase  price,  in  lieu  of one  one-hundredth  of a  share  of
Preferred  Stock,  a number of shares of Unilab's  Common  Stock having a market
value of twice  the  Right's  purchase  price.  In  addition,  should  Unilab be
acquired in a merger or other business combination, 50% or more of its assets or
earning power is sold or transferred,  or a reclassification or recapitalization
of the  Company  occurs  that has the effect of  increasing  by more than 1% the
proportionate  ownership of Unilab's stock by the acquiring  person,  then, each
Right will entitle its holder to purchase,  at the Right's then-current purchase
price,  a number of the  acquiring  company's  shares of common  stock  having a
market value at that time of twice the Right's purchase price.

         The  Rights  may be  redeemed  prior  to  becoming  exercisable  by the
Company,  subject to approval of the Board of Directors,  for one cent per Right
in accordance with the provisions of the Rights Plan. The Rights expire on March
15,  2004.  The  Company  has  reserved  1,000,000  shares  of  Series  A Junior
Participating Preferred Stock for issuance upon exercise of the Rights.

10.      Related Party Transactions

         The Company sold 533,333 shares,  valued at $0.3 million at the time of
issuance, to its former CEO pursuant to transition agreements between the former
CEO and the Company in connection  with the CEO's  resignation  in January 1997.
The Company  extended a $0.5 million loan to its current CEO for the purchase of
1.1 million shares of the Company's common stock in January 1997. The CEO repaid
$250,000 of the loan during  1997 and the  remaining  $250,000 is due in January
2002. The loan bears interest at 6% and is payable  quarterly.  In addition,  in
1997, the Company sold 500,000 shares,  valued at approximately  $0.3 million at
the  time of  issuance,  to a  director  of the  Company  pursuant  to the  1997
Directors Stock Purchase Plan. Each of these  transactions  were  consummated at
the then  prevailing  market price of the Company's  common  stock.  The Company
guaranteed  a loan of $0.4  million at  December  31,  1998 made by a band to an
executive  of the  Company.  The loan was used to purchase a residence  and such
residence serves as collateral for the Company's guarantee.

11.      Commitments and Contingencies

Property and equipment leased under capital leases is as follows:

                                                        December 31,
(in thousands)                                      1998              1997
- -----------------------------------------------------------------------------
Building                                           $3,100            $3,100
Laboratory and other equipment                      5,638             7,283
Less-Accumulated amortization                       4,934             5,158
Net leased property under capital leases           $3,804            $5,225

         As of December 31, 1998,  future minimum rental payments required under
captial and operating leases that have initial or remaining  noncancelable terms
in excess of one year are approximately as follows:

                                           Capital            Operating
(in thousands)                             Leases             Leases
1999                                       $1,854             $9,696
2000                                        2,039              5,720
2001                                          782              4,163
2002                                          822              2,616
2003                                          863              2,067
Thereafter                                    594              1,772
Total minimum less payments                $6,954            $26,034
Less: Amount representing interest          1,922
Present value of net minimum
lease payments                             $5,032

         Rental expense for operating  leases was  approximately  $10.8 million,
$10.2 million and $9.6 million in 1998, 1997 and 1996, respectively.

         The Company has employment  agreements with its principal  officers and
certain other key  employees.  Such  agreements  expire at various dates through
November  10,  1999  and  automatically  renew  for  successive  one or two year
periods,  depending on the  employee,  until one of the parties  gives notice of
termination in accordance  with the agreement.  The agreements  also provide for
annual  bonuses for  certain  officers  and key  employees,  dependent  upon the
achievement of certain performance  objectives.  In addition, the agreements for
certain  employees provide for annual deferred  compensation  equal to 8% of the
employees' cash compensation  (inclusive of bonuses) for the year. The aggregate
commitment  under  these   agreements,   excluding   bonuses  and  any  deferred
compensation  related thereto,  is approximately  $2.2 million.  The Company may
terminate the employment agreements without cause on specified advance notice by
providing  severance  pay equal to one to two times,  depending on the employee,
the current base salary plus certain other benefits.

         In addition,  the employment agreements grant these employees the right
to receive two times their annual salary and bonus, plus continuation of certain
benefits and  acceleration  of certain  stock  options,  if there is a change in
control of the Company (as  defined)  and a  termination  of such  employees  or
certain  other  events  within  two years  thereafter.  The  maximum contingent
liability upon a change in control,  excluding any bonus, deferred compensation,
continuation of benefits or acceleration of stock options, is approximately $3.5
million.

         The Company is party to certain legal proceedings considered incidental
to its business. Although the ultimate disposition of these legal proceedings is
not determinable,  management does not believe that the ultimate outcome of such
legal  proceedings  will  have a  material  adverse  effect  upon the  financial
condition, liquidity or results of operations of the Company.

12.      Benefit Plans

         The  Company  provides  a  savings  plan  under  Section  401(k) of the
Internal  Revenue Code covering most  employees.  The expense related to Company
contributions to the plan totaled  approximately $0.3 million,  $0.1 million and
$0.5 million for the years ended December 31, 1998, 1997 and 1996, respectively.
Effective January 1, 1995, the Company contributions, which were previously made
in cash,  were made in shares of Unilab common stock.  From September 1, 1996 to
September  30,  1997,  the  Company  discontinued  its  matching  contributions.
Effective  October 1, 1997,  the  Company  partially  re-instated  its  matching
contributions.  Such  contributions  were made in shares of Unilab common stock.
Effective January 1, 1998, the Company made Company contributions in cash, which
were used to purchase Company common stock by the plan's trustee.

         Effective  January 1, 1995, the Company adopted the Unilab  Corporation
Executive  Retirement Plan (the "SERP"), an unfunded defined  contribution plan,
for the benefit of designated  key  employees.  The benefit  earned each year is
issued into participants'  account through  memorandum  shares,  which represent
rights to receive  stock of the  Company at a future  date.  The SERP limits the
aggregate number of shares issued annually to 200,000 shares and the memorandum
shares  granted each year vest ratably over a three-year period.  As of December
31. 1998,  457,195  memorandum  shares were  outstanding,  of which 308,415 were
vested at December 31, 1998. The benefit formula to determine  amounts earned by
participants  is  primarily  based on the  employee's  final  five-year  average
compensation  and years of service.  Compensation  expense is recorded each year
for the amount of shares  that vest and  changes  in the price of the  Company's
common stock. Pension (income) expense for the SERP was approximately $407,000,
$271,000 and ($153,000) in 1998,  1997 and 1996,  respectively.  At December 31,
1998, the accumulated  obligation recognized as a liability in the balance sheet
was  approximately  $732,000.  The weighted  average  discount  rate and rate of
increase in future  compensation levels used in determining the present value of
benefit  obligations  were 6.0% and 3.8% in 1998, 6.6% and 3.8% in 1997 and 6.1%
and 3.8% in 1996.

13.      Supplemental Disclosures of Cash Flow Information

                                                    Years Ended December 31,
(in thousands)                                  1998       1997        1996
- -----------------------------------------------------------------------------
Cash paid during the year for:
Interest                                      $13,419     $14,063     $12,139
Income taxes                                        2           1           9

Supplemental Disclosure
   of Noncash Investing
   and Financing Activities:

Restricted shares of
   common stock issued
   to employees                                    32          16         107

Shares issued for Company's
   401(k) plan matching
   contributions                                   25          49         548

Shares issued to certain
   Board Directors and
   a consultant for
   services rendered                              160          64          61

Payment of purchase price
   for a prior acquisition in
   common shares                                   --          --       1,000
- -----------------------------------------------------------------------------
In connection with business
   acquisitions, liabilities
   were assumed as follows:

Fair value of assets acquired                  $18,734         --          --
- -----------------------------------------------------------------------------
Liabilities assumed                            $18,734         --          --
- -----------------------------------------------------------------------------


         During 1997, the Company issued 500,000 shares,  valued at $0.2 million
at the time of issuance,  to the  Company's  former CEO in  connection  with the
CEO's  resignation.  In 1997, the Company also issued 228,571 shares,  valued at
$0.1 million at the time of issuance,  to the  Company's  current CEO as a bonus
pursuant to an employment  agreement.  In addition,  the Company  issued in 1997
approximately 169,000 shares, valued at $0.3 million at the time of issuance, to
all full-time  employees as a special year-end bonus.  In the fourth  quarter of
1996, the Company wrote off $61.7 million of goodwill and customer lists.

14.      Quarterly Financial Data (unaudited)

         Summarized  unaudited  quarterly  financial  data for 1998 and 1997 (in
thousands, except per share data) is as follows:

<TABLE>
<CAPTION>
                                         Year Ended December 31, 1998
                                First          Second          Third          Fourth
                                Quarter        Quarter         Quarter        Quarter
<S>                            <C>            <C>             <C>            <C> 
- --------------------------------------------------------------------------------------
Revenue                         $54,530        $54,356         $53,160        $55,324
- --------------------------------------------------------------------------------------
Direct laboratory
   and field expenses:

Salaries, wages
   and benefits                  16,823         16,567          16,255         18,097

Supplies                          7,613          7,492           7,480          8,086

Other operating
   expenses                      13,129         13,200          13,075         14,190
- --------------------------------------------------------------------------------------
      Total                      37,565         37,259          36,810         40,373

Amortization and
   depreciation                   1,985          1,941           1,848          1,818

Selling, general
   and administrative
   expenses                       8,534          8,324           8,132          8,540
- --------------------------------------------------------------------------------------
Operating income                  6,446          6,832           6,370          4,593
- --------------------------------------------------------------------------------------
Net income                        3,072          3,446           3,062          1,123
- --------------------------------------------------------------------------------------
Net income available
   to common
   shareholders                   3,039          3,413           3,029          1,091
- --------------------------------------------------------------------------------------
Per common share
   data-diluted:

Net income                        $0.07          $0.08           $0.07          $0.03
- --------------------------------------------------------------------------------------
Price Range:
      High                        3.00           3.125           2.625           2.375
- --------------------------------------------------------------------------------------
      Low                         1.688          2.375            1.75           1.625
- --------------------------------------------------------------------------------------
</TABLE>
<TABLE>
<CAPTION>
                                           Year Ended December 31, 1997
                                 First          Second         Third          Fourth
                                 Quarter        Quarter        Quarter        Quarter
<S>                             <C>            <C>            <C>            <C> 
- --------------------------------------------------------------------------------------
Revenue                          $53,033        $54,027        $54,238        $52,703
- --------------------------------------------------------------------------------------
Direct laboratory
   and field expenses:

Salaries, wages
   and benefits                   17,820         17,352          17,174        16,748

Supplies                           7,551          7,616           7,488         7,203

Other operating
   expenses                       13,982         14,593          14,649        13,766
- --------------------------------------------------------------------------------------
      Total                       39,353         39,561          39,311        37,717

Amortization and
   depreciation                    2,153          2,312           2,210         2,210

Selling, general
   and administrative
   expenses                        9,155          8,539           8,491         8,385
- --------------------------------------------------------------------------------------
Operating income                   2,372          3,615           4,226         4,391
- --------------------------------------------------------------------------------------
Net income (loss)                 (1,135)            54             691           926
- --------------------------------------------------------------------------------------
Net income (loss)
   available to com-
   mon shareholders               (1,171)            18             655           896
- --------------------------------------------------------------------------------------
Per common share data-diluted:
Net income (loss)                 $(0.03)         $0.00           $0.02         $0.02
- --------------------------------------------------------------------------------------
Price Range:
      High                         0.875           1.125          1.813          2.125
- --------------------------------------------------------------------------------------
      Low                          0.438           0.563          1.125           1.50
- --------------------------------------------------------------------------------------
</TABLE>
<PAGE>

Fourth Quarter - 1998

         Effective  November 5, 1998, the Company acquired  substantially all of
the assets of Meris.  During the integration  period between November 5,1998 and
late  December  1998,  the Company  estimates  that the Meris  operations  had a
negative $1.2 million impact on operating profit for the quarter.

Fourth Quarter 1998 and 1997

         Testing volume  generally tends to be lower during the holiday seasons.
As a  result,  because a  substantial  portion  of the  Company's  expenses  are
relatively  fixed  over the short  term,  the  Company's  operating  income as a
percentage of revenue tends to decrease during the fourth quarter, mainly due to
the Christmas and Thanksgiving holidays.

<PAGE>


Report of Independent Public Accountants


To the Board of Directors and Shareholders of Unilab Corporation

We have  audited  the  accompanying  balance  sheets  of Unilab  Corporation  (a
Delaware  corporation)  as of  December  31,  1998  and  1997,  and the  related
statements of operations, shareholders' equity (deficit) and cash flows for each
of the three  years in the period  ended  December  31,  1998.  These  financial
statements   are  the   responsibility   of  the   Company's   management.   Our
responsibility  is to express an opinion on these financial  statements based on
our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all  material  respects,  the  financial  position of Unilab  Corporation  as of
December 31, 1998 and 1997, and the results of its operations and its cash flows
for each of the three years in the period ended  December 31, 1998 in conformity
with generally accepted accounting principles.


ARTHUR ANDERSEN LLP




Los Angeles, California
February 12, 1999

                                                         
                                                                Exhibit 21.1



                           Subsidiaries of the Company



                  None.



                                                             

                                                                 Exhibit 24.1

                                POWER OF ATTORNEY



         KNOW  ALL  MEN BY  THESE  PRESENTS  that  I,  David  C.  Weavil,  in my
individual  capacity  and  as  Director  of  Unilab   Corporation,   a  Delaware
corporation (the "Company"), hereby constitute and appoint Mark L. Bibi, Richard
A. Michaelson and/or Brian D. Urban,  severally or any one of them acting alone,
from the date  hereof  until such time as this Power of  Attorney  is revoked in
writing, to act as my true and lawful agent and attorney-in-fact, in my name and
on my behalf to execute, consent to, swear to, acknowledge,  record, file, amend
and/or modify and deliver one or more registration  statements for the filing of
securities  of the Company  under the  Securities  Act of 1933,  as amended (the
"Securities  Act") and any and all  filings  made by or on behalf of the Company
with the United  States  Securities  and  Exchange  Commission  pursuant  to the
Securities Act and/or the Securities Exchange Act of 1934, as amended.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 12th day of March 1997.

                                         /s/ David C. Weavil
                                         David C. Weavil



                                                                   
                                                                    Exhibit 24.2

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS that I, Haywood D. Cochrane,  Jr., in my
individual  capacity  and  as  Director  of  Unilab   Corporation,   a  Delaware
corporation (the "Company"), hereby constitute and appoint Mark L. Bibi, Richard
A. Michaelson and/or Brian D. Urban,  severally or any one of them acting alone,
from the date  hereof  until such time as this Power of  Attorney  is revoked in
writing, to act as my true and lawful agent and attorney-in-fact, in my name and
on my behalf to execute, consent to, swear to, acknowledge,  record, file, amend
and/or modify and deliver one or more registration  statements for the filing of
securities  of the Company  under the  Securities  Act of 1933,  as amended (the
"Securities  Act") and any and all  filings  made by or on behalf of the Company
with the United  States  Securities  and  Exchange  Commission  pursuant  to the
Securities Act and/or the Securities Exchange Act of 1934, as amended.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 17th day of June 1997.

                                              /s/ Haywood D. Cochrane
                                              Haywood D. Cochrane, Jr.





                                                     

                                                                 Exhibit 24.3

                                POWER OF ATTORNEY

         KNOW  ALL  MEN BY  THESE  PRESENTS  that  I,  Kirby  L.  Cramer,  in my
individual  capacity  and  as  Director  of  Unilab   Corporation,   a  Delaware
corporation (the "Company"), hereby constitute and appoint Mark L. Bibi, Richard
A. Michaelson and/or Brian D. Urban,  severally or any one of them acting alone,
from the date  hereof  until such time as this Power of  Attorney  is revoked in
writing, to act as my true and lawful agent and attorney-in-fact, in my name and
on my behalf to execute, consent to, swear to, acknowledge,  record, file, amend
and/or modify and deliver one or more registration  statements for the filing of
securities  of the Company  under the  Securities  Act of 1933,  as amended (the
"Securities Act") and any and all subsequent filings made by or on behalf of the
Company with the United States  Securities and Exchange  Commission  pursuant to
the Securities Act and/or the Securities Exchange Act of 1934, as amended.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 10th day of October 1994.

                                                  /s/ Kirby L. Cramer
                                                  Kirby L. Cramer







                                                                Exhibit 24.4

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE  PRESENTS  that I, Bill Gedale,  in my individual
capacity  and as Director of Unilab  Corporation,  a Delaware  corporation  (the
"Company"),  hereby  constitute and appoint Mark L. Bibi, David C. Weavil and/or
Brian D. Urban,  severally or any one of them acting alone, from the date hereof
until such time as this Power of Attorney  is revoked in  writing,  to act as my
true and  lawful  agent  and  attorney-in-fact,  in my name and on my  behalf to
execute,  consent to, swear to, acknowledge,  record,  file, amend and/or modify
and deliver one or more registration  statements for the filing of securities of
the Company under the Securities Act of 1933, as amended (the "Securities  Act")
and any and all  filings  made by or on behalf of the  Company  with the  United
States Securities and Exchange  Commission pursuant to the Securities Act and/or
the Securities Exchange Act of 1934, as amended.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 17th day of September 1997.

                                                /s/ William Gedale
                                                 William Gedale




                                                          Exhibit 24.5

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE  PRESENTS  that I, Richard A.  Michaelson,  in my
individual  capacity  and  as  Director  of  Unilab   Corporation,   a  Delaware
corporation (the "Company"),  hereby  constitute and appoint Mark L. Bibi, David
C. Weavil and/or Brian D. Urban, severally or any one of them acting alone, from
the date hereof until such time as this Power of Attorney is revoked in writing,
to act as my true and lawful  agent and  attorney-in-fact,  in my name and on my
behalf to execute, consent to, swear to, acknowledge, record, file, amend and/or
modify  and  deliver  one or more  registration  statements  for the  filing  of
securities  of the Company  under the  Securities  Act of 1933,  as amended (the
"Securities  Act") and any and all  filings  made by or on behalf of the Company
with the United  States  Securities  and  Exchange  Commission  pursuant  to the
Securities Act and/or the Securities Exchange Act of 1934, as amended.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 18th day of March, 1998.

                                                   /s/ Richard A. Michaelson
                                                   Richard A. Michaelson




                                                                 Exhibit 24.6

                                POWER OF ATTORNEY

         KNOW  ALL MEN BY  THESE  PRESENTS  that I,  Gabriel  B.  Thomas,  in my
individual  capacity  and  as  Director  of  Unilab   Corporation,   a  Delaware
corporation (the "Company"), hereby constitute and appoint Mark L. Bibi, Richard
A. Michaelson and/or Brian D. Urban,  severally or any one of them acting alone,
from the date  hereof  until such time as this Power of  Attorney  is revoked in
writing, to act as my true and lawful agent and attorney-in-fact, in my name and
on my behalf to execute, consent to, swear to, acknowledge,  record, file, amend
and/or modify and deliver one or more registration  statements for the filing of
securities  of the Company  under the  Securities  Act of 1933,  as amended (the
"Securities Act") and any and all subsequent filings made by or on behalf of the
Company with the United States  Securities and Exchange  Commission  pursuant to
the Securities Act and/or the Securities Exchange Act of 1934, as amended.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 10th day of October 1994.

                                                      /s/ Gabriel B. Thomas
                                                      Gabriel B. Thomas





                                                 Exhibit 99.1

PRESS RELEASE                                    UNILAB CORPORATION
                                                 (AMEX:ULB)
                                                 18448 Oxnard Street
                                                 Tarzana, CA  91356
                                                 www.Unilab.com
 
                                                 For Further Information:
                                                 Charles Kim
                                                 Phone: (818) 758-6607
                                                 e-mail: [email protected]

IMMEDIATE RELEASE
February 4, 1998

                    UNILAB CORPORATION ANNOUNCES 1997 RESULTS

TARZANA,  CA, February 4, 1998 -- UNILAB Corporation (AMEX: ULB) announced today
that net sales for the year ended  December  31,  1997 were $214.0  million,  an
increase of 4.3% from $205.2 million in the prior year. The Company reported net
income for the year of $0.5 million, or $.01 per common share, compared to a net
loss of $92.9 million, or $(2.53) per common share in the prior year.  Excluding
the  approximately  $78.5  million in  nonrecurring  charges in 1996,  the prior
year's net loss was $14.4 million, or $(0.39) per common share.

Earnings before Interest,  Taxes,  Depreciation and Amortization ("EBITDA") were
$23.5 million for 1997, or 11.0% of sales,  compared to $9.2 million, or 4.5% of
sales, for the prior year.

For the quarter  ended  December  31,  1997,  net sales were $52.7  million,  an
increase  of 7.7% from the $48.9  million in the same  period in the prior year.
EBITDA for the quarter was a record $6.6  million,  or 12.5% of sales,  compared
with $0.1 million  (exclusive  of  non-recurring  charges)  earned in the fourth
quarter of 1996.  The fourth  quarter  EBITDA  represents  the first time in the
Company's  history that the  seasonally  weaker fourth  quarter has exceeded the
prior quarter's earnings.

David Weavil,  Unilab's  Chairman and CEO, said "1997 has been a watershed  year
for  Unilab.  Four  sequential  quarters  of rising  EBITDA  was the  product of
effective and timely  execution of the  Company's  1997 action plan by a focused
management team."

Weavil  added  "We've  achieved  steady  progress  in 1997  on the  two  primary
objectives we laid out at the beginning of the year. First, the Company targeted
contractual  price  increases  and  service  restructuring  to insure that those
critical  aspects of  customer  agreements  became  more  rational.  Second,  we
redoubled  our  efforts  to be a lower  cost  laboratory  services  provider  by
improving  our  processes  and  eliminating  expenses  that  don't  add real and
perceived value to patient care. These  initiatives  address the basic pervasive
challenges  facing many healthcare  companies these days. I am pleased that most
of our customers  have been  supportive of our efforts and value a  relationship
with an  efficient  and high quality  laboratory.  Among our chief goals in 1998
will be the further development of the Company's operating fundamentals; process
enhancements,  baseline cost reductions,  targeted growth and customer  contract
reviews.  Most  importantly,  as a result of the foundation  laid in 1997 by our
improved financial  performance,  we feel that Unilab now has a stable base from
which to continue building."

Unilab  Corporation  is the  largest  provider of  clinical  laboratory  testing
services in California  through its primary  testing  facilities in Los Angeles,
San Jose and  Sacramento  and over 200 regional  service and testing  facilities
located throughout the state.



<PAGE>
<TABLE>

                               Unilab Corporation
                             Statement of Operations
                  (amounts in thousands, except per share data)
<CAPTION>

                                                            Three months ended Dec. 31,       Year ended Dec. 31,
                                                               1997          1996             1997            1996
<S>                                                          <C>           <C>            <C>            <C>
Revenue                                                       $52,703      $48,948        $214,001        $205,217

Direct Laboratory and Field Expenses:
    Salaries, Wages and Benefits                               16,748       18,061          69,094          70,869
    Supplies                                                    7,203        7,317          29,858          28,631
    Other Operating Expenses                                   13,766       14,159          56,990          54,672
                                                               ------       ------          ------          ------
                                                               37,717       39,537         155,942         154,172
                                                               ------       ------         -------         -------
Legal and Acquisition Related Charges                               -            -               -           4,940
Restructuring Charges                                               -       65,655               -          65,655
Amortization and Depreciation                                   2,210        2,846           8,885          11,491
Selling, General and Administrative Expenses                    8,385        9,340          34,570          41,801
                                                                -----        -----          ------          ------

    Total Operating Expenses                                   48,312      117,378         199,397         278,059
                                                               ------      -------         -------         -------
Operating Income (Loss)                                         4,391     (68,430)          14,604        (72,842)

Other Income (Expenses):
    Interest Expense, net                                     (3,465)      (3,423)        (14,068)        (12,122)
    Loss on Sale of Promissory Note                                 -      (4,529)               -         (4,529)
                                                                    -      -------               -         -------
Income (Loss) Before Income Taxes and
    Extraordinary Item                                            926     (76,382)             536        (89,493)

Extraordinary Item - Loss on Early
Extinguishment of Debt                                             -             -               -           3,451
                                                          ----------- ------------    ------------         -------
Net Income (Loss)                                                 926     (76,382)             536        (92,944)

Preferred Stock Dividends                                          30           36             138             144
                                                                   --           --             ---             ---
Net Income (Loss) Available to Common
   Stockholders                                                  $896    ($76,418)            $398       ($93,088)

Basic Earnings per Share:
Income (Loss) Before Extraordinary Item                         $0.02      ($2.08)           $0.01         ($2.43)
Extraordinary Item                                                 -            -                -         ($0.10)
Net Income (Loss)                                               $0.02      ($2.08)           $0.01         ($2.53)

Weighted Average Common
Shares Outstanding                                             40,393       37,236          39,927          36,831

EBITDA, excluding legal and acquisition
    related charges, restructuring charges
    and extraordinary item                                     $6,601          $71         $23,489          $9,244

</TABLE>
<PAGE>
<TABLE>

                               Unilab Corporation
                                  Balance Sheet
                             (amounts in thousands)
<CAPTION>

                                                                      December 31                December 31,
                                                                         1997                        1996 
<S>                                                                    <C>                        <C> 
Cash and Cash Equivalents                                                $11,652                   $12,176
Restricted Cash                                                                -                       904
Accounts Receivable, net                                                  36,583                    37,279
Other Current Assets                                                       4,106                     4,306
                                                                        --------                     -----
     Total Current Assets                                                 52,341                    54,665

Fixed Assets, net                                                         13,160                    17,264

Goodwill and Other Intangible Assets                                      46,430                    48,038

Other Assets                                                               6,769                     5,952
                                                                           -----                     -----

Total Assets                                                            $118,700                  $125,919
                                                                        --------                  --------

Total Current Liabilities                                                 23,791                    29,752

Long-Term Debt, net of current portion                                   124,285                   126,120
Other Liabilities                                                          2,907                     4,735

Total Shareholders' Deficit                                             (32,283)                  (34,688)
                                                                        --------                  --------

Total Liabilities and Shareholders' Deficit                             $118,700                  $125,919
                                                                        --------                  --------

</TABLE>


<TABLE> <S> <C>

<ARTICLE> 5
<CIK> 0000899714
<NAME> UNILAB CORPORATION
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                          20,137
<SECURITIES>                                         0
<RECEIVABLES>                                   52,139
<ALLOWANCES>                                  (10,813)
<INVENTORY>                                      3,055
<CURRENT-ASSETS>                                65,563
<PP&E>                                          42,242
<DEPRECIATION>                                (30,965)
<TOTAL-ASSETS>                                 142,460
<CURRENT-LIABILITIES>                           22,631
<BONDS>                                        137,170
                                0
                                          4
<COMMON>                                           407
<OTHER-SE>                                    (20,956)
<TOTAL-LIABILITY-AND-EQUITY>                   142,460
<SALES>                                        217,370
<TOTAL-REVENUES>                               217,370
<CGS>                                                0
<TOTAL-COSTS>                                  152,007
<OTHER-EXPENSES>                                25,460
<LOSS-PROVISION>                                15,662
<INTEREST-EXPENSE>                              13,538
<INCOME-PRETAX>                                 10,703
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                             10,703
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    10,703
<EPS-PRIMARY>                                     0.26
<EPS-DILUTED>                                     0.25
        

</TABLE>


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