MADISON, N.J., June 15 /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 Jefferies 3rd Annual Healthcare Conference in New York City on Thursday, June 18, 2009. The Quest Diagnostics presentation is scheduled to begin at 11:45 a.m. Eastern Time.

The presentation will be webcast live during the conference and will be available to registered investors on the following site: http://www.wsw.com/webcast/jeff35/dgx/ 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 July 18, 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.

    Contacts:
    Laure Park (Investors):         973-520-2900
    Wendy Bost (Media):             973-520-2800

SOURCE: Quest Diagnostics Incorporated

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