Exhibit 99.1
           QUEST DIAGNOSTICS ANNOUNCES INCREASED REVENUES AND EARNINGS
                      FOR FOURTH QUARTER AND FULL YEAR 2002

TETERBORO, N.J., JANUARY 23, 2003--Quest Diagnostics Incorporated (NYSE: DGX),
the nation's leading provider of diagnostic testing, information and services,
announced that for the fourth quarter ended December 31, 2002, net income
increased to $82 million, or $0.82 per diluted share, from $51 million, or $0.52
per diluted share, in the fourth quarter of 2001. Earnings per diluted share
increased 34% from $0.61 in 2001, adjusted for the required change in goodwill
accounting (SFAS 142).

Fourth quarter 2002 earnings include $2.9 million in pretax gains on the sale of
certain assets, which contributed earnings of $0.02 per diluted share.

Fourth quarter revenues of $1 billion grew 13.5% over the prior year level and
reflect the acquisition of American Medical Laboratories (AML), which was
completed on April 1, 2002. Clinical testing volume, measured by the number of
requisitions, increased 10.4% compared to the prior year, or 1.6% on a pro forma
basis, assuming that AML had been part of Quest Diagnostics since January 1,
2001. Volume during the quarter was reduced approximately 1% as a result of
severe December weather. Revenue per requisition increased 3.4% compared to the
prior year.

Earnings before interest, taxes, depreciation and amortization (EBITDA) were
$185 million, or 17.9% of revenues, compared to $144 million, or 15.8% of
revenues for the prior year period. Bad debt expense improved to 5.1% of
revenues in the quarter, compared to 5.8% in the prior year period.

Cash flow from operations totaled $246 million for the quarter, an increase of
$82 million over the prior year period. Days sales outstanding improved to 49
days, compared to 51 days at the end of the third quarter and 54 days at the end
of 2001. During the quarter the company repaid $225 million of debt, completing
the repayment of the $475 million borrowed in April in connection with the
acquisition of AML. Capital expenditures were $37 million for the quarter.

"We delivered strong performance in 2002, significantly increasing earnings per
share in the fourth quarter, and reporting full year earnings growth of greater
than 40% for the third consecutive year," said Kenneth W. Freeman, Chairman and
Chief Executive Officer. "We also generated strong cash flow, which allowed us
to strengthen our balance sheet, invest in the business and position ourselves
for continued growth. We expect another strong year in 2003. Excluding the
impact of the planned acquisition of Unilab, we anticipate earnings increasing
to between $4.00 and $4.20 per diluted share on revenue growth of approximately
8% to 10%."

For the full year 2002, net income increased to $322 million from $188 million
before special items in 2001. Earnings per diluted share were $3.23, compared to
$1.92 before special items in the prior year. The special items represented an
extraordinary loss and a special charge, both associated with the company's debt
refinancing in the second quarter of 2001. Earnings per diluted share increased
41% from $2.29 in 2001, adjusted for the required change in goodwill accounting
and the special items incurred in 2001. Revenues increased 13.2% to $4.1
billion. EBITDA was $727 million, or 17.7% of revenues, compared to $557
million, or 15.3% of revenues, adjusted for special items, in 2001. Cash flow
from operations was $596 million, above the prior-year level by $131 million.
Capital expenditures were $155 million.





Quest Diagnostics will discuss results for the fourth quarter and full year 2002
during a conference call for investors on January 24 at 8 a.m. Eastern Time. To
hear a simulcast of the call over the Internet or a replay, registered analysts
may access StreetEvents at: www.streetevents.com; and all others may access the
Quest Diagnostics website at: www.questdiagnostics.com.   In addition, a replay
of the call will be available from 10 a.m. on January 24 through 5 p.m. on
February 21 to investors in the U.S. by dialing 800-925-4170. Investors outside
the U.S. may dial 402-220-4168. No password is required for either number.

Quest Diagnostics Incorporated is the nation's leading provider of diagnostic
testing, information and services, providing insights that enable physicians,
hospitals, managed care organizations and other healthcare professionals to make
decisions to improve health. The company offers patients and physicians the
broadest access to diagnostic laboratory services through its national network
of laboratories and patient service centers. Quest Diagnostics is the leading
provider of esoteric testing, including gene-based medical testing, and empowers
healthcare organizations and clinicians with state-of-the-art connectivity
solutions that improve practice management. Additional company information can
be found on the Internet at: www.questdiagnostics.com.

The statements in this press release which are not historical facts or
information may be forward-looking statements. These forward-looking statements
involve risks and uncertainties that could cause actual results and outcomes to
be materially different. Certain of these risks and uncertainties may include,
but are not limited to, unanticipated expenditures, changing relationships with
customers, suppliers and strategic partners, conditions of the economy and other
factors described in the Quest Diagnostics Incorporated 2001 Form 10-K and
subsequent filings.





                 Quest Diagnostics Incorporated and Subsidiaries

                      Consolidated Statements of Operations
        For the Three and Twelve Months Ended December 31, 2002 and 2001
                      (in millions, except per share data)

                                    Three Months Ended      Twelve Months Ended
                                       December 31,             December 31,
                                    ------------------      -------------------
                                      2002       2001         2002       2001
                                      ----       ----         ----       ----

Net revenues......................  $1,033.8   $  910.4     $4,108.1   $3,627.7

Costs and expenses:
  Cost of services................     619.3      537.6      2,432.4    2,151.6
  Selling, general and
    administrative................     267.0      258.4      1,074.8    1,018.7
  Interest expense, net...........      12.7       12.5         53.7       70.5
  Amortization of intangible
    assets........................       2.1       11.4          8.3       46.1
  Provision for special charge....        -          -            -         6.0
  Minority share of income........       3.4        3.1         14.9        9.9
  Other, net......................      (8.0)      (4.1)       (18.4)      (7.7)
                                    --------   --------     --------   --------
      Total.......................     896.5      818.9      3,565.7    3,295.1
                                    --------   --------     --------   --------
Income before taxes and
  extraordinary loss..............     137.3       91.5        542.4      332.6
Income tax expense................      55.6       40.6        220.2      148.7
                                    --------   --------     --------   --------
Income before extraordinary loss..      81.7       50.9        322.2      183.9
Extraordinary loss, net of taxes..        -          -            -       (21.6)
                                    --------   --------     --------   --------
Net income........................  $   81.7   $   50.9     $  322.2   $  162.3
                                    ========   ========     ========   ========
Income before extraordinary loss
  and special charge..............  $   81.7   $   50.9     $  322.2   $  187.5

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

Basic earnings per common share:
Income before extraordinary loss..      0.84   $   0.54     $   3.34   $   1.98
Net income........................      0.84       0.54         3.34       1.74
Income before extraordinary loss
  and special charge..............      0.84       0.54         3.34       2.01

Weighted average common shares
  outstanding - basic.............      97.2       94.4         96.5       93.1

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

Diluted earnings per common share:
Income before extraordinary loss..  $   0.82   $   0.52     $   3.23   $   1.88
Net income........................      0.82       0.52         3.23       1.66
Income before extraordinary loss
  and special charge..............      0.82       0.52         3.23       1.92

Weighted average common shares
  outstanding - diluted...........      99.8       98.5         99.8       97.6

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

EBITDA............................  $  184.6   $  143.8     $  727.4   $  556.9

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






                 Quest Diagnostics Incorporated and Subsidiaries

                           Consolidated Balance Sheets
                           December 31, 2002 and 2001
                      (in millions, except per share data)


                                                    December 31,    December 31,
                                                        2002            2001
                                                    ------------    ------------
Assets
Current assets:
Cash and cash equivalents........................     $   96.8        $  122.3
Accounts receivable, net.........................        522.1           508.3
Inventories......................................         60.9            49.9
Deferred income taxes............................        102.7           157.6
Prepaid expenses and other current assets........         41.9            38.4
                                                      --------        --------
    Total current assets.........................        824.4           876.5
Property, plant and equipment, net...............        570.1           508.6
Goodwill, net....................................      1,788.9         1,351.1
Intangible assets, net...........................         22.1            28.0
Deferred income taxes............................         29.8            52.7
Other assets.....................................         88.9           113.7
                                                      --------        --------
Total assets.....................................     $3,324.2        $2,930.6
                                                      ========        ========


Liabilities and Stockholders' Equity
Current liabilities:
Accounts payable and accrued expenses............     $  610.0        $  657.2
Short-term borrowings and current portion of
  long-term debt.................................         26.0             1.4
                                                      --------        --------
    Total current liabilities....................        636.0           658.6
Long-term debt...................................        796.5           820.3
Other liabilities................................        122.8           115.7
Common stockholders' equity:
  Common stock, par value $0.01 per share; 300
    shares authorized; 98.0 and 96.0 shares
    issued and outstanding at December 31, 2002
    and December 31, 2001, respectively..........          1.0             1.0
  Additional paid-in capital.....................      1,817.5         1,714.7
  Accumulated deficit............................        (40.8)         (362.9)
  Unearned compensation..........................         (3.3)          (13.3)
  Accumulated other comprehensive loss...........         (5.5)           (3.5)
                                                      --------        --------
    Total common stockholders' equity............      1,768.9         1,336.0
                                                      --------        --------
Total liabilities and stockholders' equity.......     $3,324.2        $2,930.6
                                                      ========        ========






                 Quest Diagnostics Incorporated and Subsidiaries

                      Consolidated Statements of Cash Flows
             For the Twelve Months Ended December 31, 2002 and 2001
                                  (in millions)

                                                          Twelve Months Ended
                                                              December 31,
                                                         ---------------------
                                                          2002           2001
                                                          ----           ----
Cash flows from operating activities:
Net income.......................................     $  322.2        $  162.3
Extraordinary loss, net of taxes.................           -             21.6
Adjustments to reconcile net income to net cash
  provided by operating activities:
  Depreciation and amortization..................        131.4           147.7
  Provision for doubtful accounts................        217.4           218.3
  Provisions for restructuring and other
    special charges..............................           -              6.0
  Deferred income tax provision (benefit)........         90.4            (0.6)
  Minority share of income.......................         14.9            10.0
  Stock compensation expense.....................          9.0            20.7
  Tax benefits associated with stock-based
    compensation plans...........................         44.5            71.9
  Other, net.....................................         (0.8)            1.0
  Changes in operating assets and liabilities:
    Accounts receivable..........................       (168.2)         (230.1)
    Accounts payable and accrued expenses........        (12.7)           12.8
    Integration, settlement and other special
      charges....................................        (29.7)          (48.7)
    Other assets and liabilities, net............        (22.0)           72.9
                                                      --------        --------
Net cash provided by operating activities........        596.4           465.8
                                                      --------        --------
Cash flows from investing activities:
Business acquisitions, net of cash acquired......       (333.5)         (152.9)
Capital expenditures.............................       (155.2)         (149.0)
Proceeds from disposition of assets..............         10.5            22.7
Increase in investments and other assets.........         (9.7)          (20.4)
Collection of note receivable....................         10.7             3.0
                                                      --------        --------
Net cash used in investing activities............       (477.2)         (296.6)
                                                      --------        --------
Cash flows from financing activities:
Repayments of debt...............................       (634.2)       (1,175.5)
Proceeds from borrowings.........................        475.2           969.9
Financing costs paid.............................         (0.1)          (28.5)
Exercise of stock options........................         27.0            25.6
Distributions to minority partners...............        (12.2)           (8.7)
Redemption of preferred stock....................           -             (1.0)
Preferred dividends paid.........................           -             (0.2)
Other............................................         (0.4)             -
                                                      --------        --------
Net cash used in financing activities............       (144.7)         (218.4)
                                                      --------        --------
Net change in cash and cash equivalents..........        (25.5)          (49.2)

Cash and cash equivalents, beginning of year.....        122.3           171.5
                                                      --------        --------
Cash and cash equivalents, end of year...........     $   96.8        $  122.3
                                                      ========        ========
Cash paid during the year for:
  Interest.......................................     $   56.1        $   58.5
  Income taxes...................................     $   83.7        $   26.4

Free cash flow...................................     $  441.2        $  316.8






Notes to Financial Tables

1)  Net income per common share is computed by dividing net income less
    dividends on preferred stock (approximately $30 thousand per quarter in
    2001) by the weighted average number of common shares outstanding.
    Potentially dilutive common shares primarily represent stock options. During
    the fourth quarter of 2001, the Company redeemed all of the then issued and
    outstanding shares of preferred stock.

    The following table presents net income and basic and diluted earnings per
    common share, had the Company elected to recognize compensation cost based
    on the fair value at the grant dates for stock option awards and discounts
    granted for stock purchases under the Company's Employee Stock Purchase
    Plan, consistent with the method prescribed by Statement of Financial
    Accounting Standards No. 123, "Accounting for Stock-Based Compensation", as
    amended by Statement of Financial Accounting Standards No. 148, "Accounting
    for Stock-Based Compensation - Transition and Disclosure - an amendment of
    FASB Statement No. 123":

                                    Three Months Ended      Twelve Months Ended
                                       December 31,             December 31,
                                    ------------------      -------------------
                                      2002       2001         2002       2001
                                      ----       ----         ----       ----
                                        (in millions, except per share data)
Net income
Net income, as reported...........  $   81.7   $   50.9     $  322.2   $  162.3
Deduct:  Total stock-based
  compensation expense
  determined under fair value
  method for all awards, net of
  related tax effects.............     (10.2)      (7.3)       (38.4)     (24.4)
                                    --------   --------     --------   --------
Pro forma net income..............  $   71.5   $   43.6     $  283.8   $  137.9
                                    ========   ========     ========   ========

Earnings per common share
Basic - as reported...............  $   0.84   $   0.54     $   3.34   $   1.74
                                    --------   --------     --------   --------
Basic - pro forma.................  $   0.74   $   0.46     $   2.94   $   1.48
                                    --------   --------     --------   --------
Diluted - as reported.............  $   0.82   $   0.52     $   3.23   $   1.66
                                    --------   --------     --------   --------
Diluted - pro forma...............  $   0.73   $   0.45     $   2.87   $   1.41
                                    --------   --------     --------   --------

The fair value of each option grant was estimated on the date of grant using the
Black-Scholes option-pricing model with the following weighted average
assumptions:

                                    Three Months Ended      Twelve Months Ended
                                       December 31,             December 31,
                                    ------------------      -------------------
                                      2002       2001         2002       2001
                                      ----       ----         ----       ----
Dividend yield....................     0.0%       0.0%         0.0%       0.0%
Risk-free interest rate...........     2.9%       4.5%         4.2%       5.1%
Expected volatility...............    47.5%      47.7%        45.2%      47.7%
Expected holding period, in
  years...........................      5          5            5          5


2)  Other, net, which represents income for each of the periods presented,
    includes equity earnings from our unconsolidated joint ventures and
    miscellaneous gains and losses. For the three months ended December 31,
    2002, other, net includes $2.9 million in pretax gains on the sale of
    certain assets. For the twelve months ended December 31, 2002, other, net
    also includes a $3.8 million gain on the sale of an investment and a $1.5
    million charge associated with the integration of AML, both recorded in the
    third quarter. For the twelve months ended December 31, 2001, other, net
    includes the net impact of the write-off of $9.6 million of impaired assets
    and a $6.3 million gain on the sale of an investment.

3)  During the second quarter of 2001, the Company refinanced the majority of
    its indebtedness. The extraordinary loss of $36.0 million ($21.6 million,
    net of tax) represents the write-off of deferred financing costs, and tender
    premiums paid in connection with extinguishing the debt that was refinanced.

4)  In conjunction with the Company's debt refinancing during the second quarter
    of 2001, the Company recorded a special charge of $6.0 million ($3.6
    million, net of tax) representing the costs to settle existing interest rate
    swap agreements on the debt that was refinanced.






5)  In July 2001, the Financial Accounting Standards Board issued Statement of
    Financial Accounting Standards No. 142, "Goodwill and Other Intangibles"
    ("SFAS 142"), which the Company adopted on January 1, 2002. The following
    table presents net income and basic and diluted earnings per common share
    data adjusted to exclude the amortization of goodwill, assuming that SFAS
    142 had been in effect for the periods presented:

                                    Three Months Ended      Twelve Months Ended
                                    December 31, 2001        December 31, 2001
                                    ------------------      -------------------
                                        (in millions, except per share data)
Net income
Adjusted income before
  extraordinary loss..............       $   59.8                $  219.9
Adjusted net income...............           59.8                   198.3

Adjusted income before
  extraordinary loss and special
  charge..........................           59.8                   223.5


Basic earnings per common share:
Adjusted income before
  extraordinary loss..............       $   0.63                $   2.36
Adjusted net income...............           0.63                    2.13

Adjusted income before
  extraordinary loss and special
  charge..........................           0.63                    2.40


Diluted earnings per common share:
Adjusted income before
  extraordinary loss..............       $   0.61                $   2.25
Adjusted net income...............           0.61                    2.03

Adjusted income before
  extraordinary loss and special
  charge..........................           0.61                    2.29


6)  EBITDA represents income before net interest expense, income taxes,
    depreciation and amortization, before special items in 2001. The special
    items represented the extraordinary loss and the special charge associated
    with the Company's debt refinancing in the second quarter of 2001. EBITDA is
    presented and discussed because management believes it is a useful adjunct
    to net income and other measurements under accounting principles generally
    accepted in the United States since it is a meaningful measure of a
    company's performance and ability to meet its future debt service
    requirements, fund capital expenditures and meet working capital
    requirements. EBITDA is not a measure of financial performance under
    accounting principles generally accepted in the United States and should not
    be considered as an alternative to (i) net income (or any other measure of
    performance under accounting principles generally accepted in the United
    States) as a measure of performance or (ii) cash flows from operating,
    investing or financing activities as an indicator of cash flows or as a
    measure of liquidity. The following table reconciles net income to EBITDA:

                                    Three Months Ended      Twelve Months Ended
                                       December 31,             December 31,
                                    ------------------      -------------------
                                      2002       2001         2002       2001
                                      ----       ----         ----       ----
                                                   (in millions)
Net income........................  $   81.7   $   50.9     $  322.2   $  162.3
Add:
  Interest expense, net...........      12.7       12.5         53.7       70.5
  Income tax expense..............      55.6       40.6        220.2      148.7
  Depreciation ...................      32.5       28.4        123.0      101.7
  Amortization ...................       2.1       11.4          8.3       46.1
  Extraordinary loss, net of
    taxes.........................        -          -            -        21.6
  Provision for special charge....        -          -            -         6.0
                                    --------   --------     --------   --------
EBITDA............................  $  184.6   $  143.8     $  727.4   $  556.9
                                    ========   ========     ========   ========






7)  Free cash flow represents net cash provided by operating activities less
    capital expenditures. Free cash flow is presented because management
    believes it is a useful adjunct to cash flow from operating activities and
    other measurements under accounting principles generally accepted in the
    United States since it is a meaningful measure of a company's performance
    and ability to fund investing activities and meet its future debt service
    requirements. Free cash flow is not a measure of financial performance under
    accounting principles generally accepted in the United States and should not
    be considered as an alternative to cash flows from operating, investing or
    financing activities as an indicator of cash flows or as a measure of
    liquidity. The following table reconciles net cash provided by operating
    activities to free cash flow:

                                    Three Months Ended      Twelve Months Ended
                                    December 31, 2001        December 31, 2001
                                    ------------------      -------------------
                                                  (in millions)
Net cash provided by operating
  activities......................       $  596.4                $  465.8

Less:  Capital expenditures.......          155.2                   149.0
                                         ----------              --------
Free cash flow....................       $  441.2                $  316.8
                                         =========               ========