Quest Diagnostics To Speak At The Oppenheimer 20th Annual Healthcare Conference

MADISON, N.J., Nov. 2 /PRNewswire-FirstCall/ -- Quest Diagnostics Incorporated
(NYSE: DGX), the world's leading provider of diagnostic testing, information
and services, announced that it is scheduled to speak at the Oppenheimer 20th
Annual Healthcare Conference in New York City. The presentation is scheduled
for Wednesday, November 4, 2009 at 11:25 a.m. Eastern Time.

During the conference, the company will reaffirm its 2009 guidance for revenue
growth to approximate 3%, operating income to exceed 18% of revenues, and
diluted earnings per share from continuing operations to range from $3.80 to
$3.85.

The presentation will be webcast live during the conference and will be
available to registered investors on the following site:
http://www.veracast.com/webcasts/opco/healthcare09/75206492.cfm and to the
public on www.QuestDiagnostics.com/investor. In addition, the archived
webcast will be available one hour after the conclusion of the live event and
will remain available until December 4, 2009.

Quest Diagnostics is the world's leading provider of diagnostic testing,
information and services that patients and doctors need to make better
healthcare decisions. The company offers the broadest access to diagnostic
testing services through its network of laboratories and patient service
centers, and provides interpretive consultation through its extensive medical
and scientific staff. Quest Diagnostics is a pioneer in developing innovative
diagnostic tests and advanced healthcare information technology solutions that
help improve patient care. Additional company information is available at
www.QuestDiagnostics.com.

The statements in this press release which are not historical facts may be
forward-looking statements. Readers are cautioned not to place undue reliance
on forward-looking statements, which speak only as of the date that they are
made and which reflect management's current estimates, projections,
expectations or beliefs and which involve risks and uncertainties that could
cause actual results and outcomes to be materially different. Risks and
uncertainties that may affect the future results of the company include, but
are not limited to, adverse results from pending or future government
investigations, lawsuits or private actions, the competitive environment,
changes in government regulations, changing relationships with customers,
payers, suppliers and strategic partners and other factors discussed in
"Business," in "Risk Factors," "Cautionary Factors that May Affect Future
Results," "Legal Proceedings," "Management's Discussion and Analysis of
Financial Condition and Results of Operations" and "Quantitative and
Qualitative Disclosures About Market Risk" in the company's 2008 Annual Report
on Form 10-K and "Management's Discussion and Analysis of Financial Condition
and Results of Operations" and "Quantitative and Qualitative Disclosures About
Market Risk" and "Risk Factors" in the company's 2009 Quarterly Reports on
Form 10-Q and other items throughout the Form 10-K and the company's 2009
Quarterly Reports on Form 10-Q and Current Reports on Form 8-K.

Contacts:
Kathleen Valentine (Investors): 973-520-2900
Wendy Bost (Media): 973-520-2800

SOURCE Quest Diagnostics

Kathleen Valentine (Investors), +1-973-520-2900; or Wendy Bost (Media),
+1-973-520-2800