2016 Quest Diagnostics Drug Testing Index™

Drug Positivity in U.S. Workforce Rises to Highest Level in a Decade

Following years of declines, the percentage of employees in the combined U.S. workforce testing positive for drugs has steadily increased over the last three years to a 10-year high, according to an analysis of nearly 11 million workforce drug test results by Quest Diagnostics. Other insights include:

  • According to analysis of urine drug test results, the rate of amphetamine, marijuana, and heroin detection has increased annually for the past five years.
  • Almost half (45%) of individuals in the general U.S. workforce with a positive drug test for any substance in 2015 showed evidence of marijuana.
  • Positivity rates for post-accident urine drug testing are rising in both the general U.S. and federally-mandated, safety-sensitive workforces.

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.

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