Quest Diagnostics Incorporated , the leading provider of diagnostic testing, information and services, will conduct its annual meeting of shareholders on Friday, May 16th at 10:30 am ET.

An audio webcast will be accessible through the Investor Relations section of the company Web site at www.questdiagnostics.com/investor . For those unable to listen to the live broadcast, a replay will be available on the Web site beginning approximately one hour after the event. The replay of the meeting will be available through June 15, 2008.

Quest Diagnostics is the 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 national 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 new diagnostic tests and advanced healthcare information technology solutions that help improve patient care. Additional company information is available at: www.questdiagnostics.com .

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SOURCE: Quest Diagnostics Incorporated

CONTACT: Investors: Laure Park, +1-973-520-2900, or Media: Nancy
Fitzsimmons, +1-973-520-2800, both of Quest Diagnostics Incorporated

Web site: http://www.questdiagnostics.com/
http://www.questdiagnostics.com/investor