MADISON, N.J., Sept. 14, 2012 /PRNewswire/ -- Quest Diagnostics Incorporated (NYSE: DGX), the world's leading provider of diagnostic testing, information and services, has again been named to the Dow Jones Sustainability World Index and North America Index. Quest Diagnostics is in its ninth year on the World Index (since 2004) and in its eighth on the North America Index (since 2005).

"All of us at Quest Diagnostics are proud to have again earned a place on the Dow Jones Sustainability Index," said Steve Rusckowski, Quest Diagnostics' President and Chief Executive Officer. "We take even greater pride in the commitments these rankings reflect – to the patients we serve, our employees and their families, and the communities and environments where we work and live."

Launched in 1999, the DJSI are the first global indexes tracking the financial performance of the leading sustainability-driven companies worldwide. The DJSI enable investors to integrate sustainability considerations into their portfolios while providing an effective engagement platform for encouraging companies to adopt sustainable best practices. The result of the Corporate Sustainability Assessment provides an in-depth analysis of economic, environmental and social criteria, such as corporate governance, water-related risks and stakeholder relations, with a special focus on industry-specific risks and opportunities.

More information on the DJSI, including a list of all component companies, is available at: www.sustainability-indexes.com. To learn more about Quest Diagnostics' commitment to responsible corporate citizenship, and to view the company's latest Corporate Social Responsibility report, visit QuestCares.com.

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 diagnostic tests and advanced healthcare information technology solutions that help improve patient care. Additional company information is available at QuestDiagnostics.com. Follow us at Facebook.com/QuestDiagnostics and Twitter.com/QuestDX.

Media: Barb Short / Caitlin McHugh – 973-520-2800
Investor: Kathleen Valentine – 973-520-2900

SOURCE Quest Diagnostics Incorporated