MADISON, N.J., Jan. 19 /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 2010 Global Healthcare Services Conference in New York City. The presentation is scheduled for Tuesday, January 26, 2010 at 9:30 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/jeff40/dgx/ and to the public on http://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 February 25, 2010. 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 http://www.questdiagnostics.com/. Contacts: Kathleen Valentine (Investors): 973-520-2900 Wendy Bost (Media): 973-520-2800 DATASOURCE: Quest Diagnostics Incorporated CONTACT: Kathleen Valentine (Investors): +1-973-520-2900, or Wendy Bost (Media): +1-973-520-2800 Web Site: http://www.questdiagnostics.com/

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