Latest Quest Diagnostics Drug Testing Index™ insights

Increases in illicit drugs drive workforce drug positivity to highest rate in 12 years

The Quest Diagnostics Drug Testing Index reveals insights into patterns of drug use among the American workforce. It has been published annually for more than 25 years as a public service for government, employers, policymakers, and the general public. Key insights from the 2017 report include:


• Cocaine, marijuana, and methamphetamine use is up broadly among the U.S. workforce across multiple drug test specimen types and testing populations
• Double-digit increases (75%) in marijuana positivity continue in oral fluid drug testing
• Marijuana positivity in Colorado and Washington grew faster than the national average for the first time
• Methamphetamine positivity climbed 64% in the general U.S. workforce since 2012

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