John B Ziegler

John B. Ziegler retired in January 2006 as the President, Worldwide Consumer Healthcare, of GlaxoSmithKline plc (the parent of SmithKline Beecham plc). Mr. Ziegler joined SmithKline Beecham in 1991 as the head of SB Consumer Healthcare-North American Division. He was Executive Vice President of SmithKline Beecham from 1996 to 1998 and became President, Worldwide Consumer Healthcare in 1998. He has been a director of Quest Diagnostics since May 2000. Mr. Ziegler has been recommended by SmithKline Beecham for nomination as a director of Quest Diagnostics pursuant to the Stockholders Agreement with SmithKline Beecham. See "Related Person Transactions--GlaxoSmithKline" on page 12.