Quest Diagnostics Selected as Member of Dow Jones® Sustainability Index

(3BL Media / theCSRfeed) Madison, NJ - October 6, 2011 - Quest Diagnostics Incorporated (NYSE: DGX), the world's leading provider of diagnostic testing, information and services, today announced that it has again been selected to be part of the Dow Jones® Sustainability World Indexes and North America Indexes (DJSI World and DJSI North America).

"Quest Diagnostics is proud to be included in the Dow Jones Sustainability Index," said Surya N. Mohapatra, Ph.D., Chairman and Chief Executive Officer of Quest Diagnostics. "Our placement on these indexes reflects our company's strong commitments to the patients we serve, the communities and environments where we work and live, and the wellness of our employees and their families."   The Dow Jones Sustainability Indexes were launched in 1999 as the first global sustainability benchmarks. The indexes are offered cooperatively by SAM Indexes and Dow Jones Indexes, the marketing name and a licensed trademark of CME Group Index Services LLC. The family tracks the stock performance of the world's leading companies in terms of economic, environmental and social criteria. The indexes serve as benchmarks for investors who integrate sustainability considerations into their portfolios, and provide an effective engagement platform for companies who want to adopt sustainable best practices.   Additional information about the DJSI, including a list of all component companies, is available at: http://www.sustainability-indexes.com/.   To view the Quest Diagnostics 2010 Corporate Citizenship Responsibility Report visit: http://www.questdiagnostics.com/brand/company/questcares/docs/2010_corporate_social_responsibility.pdf   About Quest Diagnostics 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 new diagnostic tests and advanced healthcare information technology solutions that help improve patient care. Additional company information is available at: http://www.questdiagnostics.com/.   Media Contact: Barb Short - 973-520-2800
Investor Contact: Kathleen Valentine - 973-520-2900   QUEST17437