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March 12, 2008   Use of Methamphetamine Among U.S. Workers and Job Applicants Drops 22 Percent in 2007 and Cocaine Use Slows Dramatically, Reports Quest Diagnostics   Read more >

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August 9, 2007   Quest Diagnostics’ Drug Testing Index® Finds Cocaine Use At 10-Year Low Among U.S. Workers   Read more >

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March 7, 2007   Drug Use Hits New Low Among U.S. Workers in 2006, According to Quest Diagnostics’ Drug Testing Index®   Read more >

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June 19, 2006   Amphetamines Use Declined Significantly Among U.S. Workers in 2005, According to Quest Diagnostics’ Drug Testing Index®   Read more >

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December 1, 2005   Amphetamines Drug-Test Positives Are Up Among Safety-Sensitive Workers in the First Half of 2005, According to Quest Diagnostics' Drug Testing Index®   Read more >

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May 16, 2005   Amphetamines Use in the Workplace Continued to Grow, According to Quest Diagnostics' 2004 Drug Testing Index   Read more >

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July 22, 2004   Increased Use of Amphetamines Linked to Rising Workplace Drug Use, According to Quest Diagnostics’ 2003 Drug Testing Index: Opiate Use Increases Noticeably   Read more >

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November 5, 2003   Drug Use Climbed in the U.S. Workforce in the First Half of 2003, Driven by Continued Use of Amphetamines, According to Quest Diagnostics' Drug Testing Index   Read more >

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May 27, 2003   Amphetamine Use Increases in the General U.S. Workforce, According to Quest Diagnostics’ 2002 Drug Testing Index   Read more >

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June 28, 2002   Workplace Drug Use Decreased After September 11, 2001, According to Quest Diagnostics' Drug Testing Index   Read more >

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November 30, 2001   Drug Use in the General U.S. Workforce Increased in First Half Of 2001, According to Quest Diagnostics' Drug Testing Index   Read more >