Quest Diagnostics Drug Testing Index™

The Quest Diagnostics Drug Testing Index reveals insights into patterns of drug use among the American workforce. It has examined positivity rates for workplace drugs tested by the company on behalf of employers since 1988. Quest Diagnostics publishes these findings as a public service for government, employers, policymakers, and the general public.

The latest results, based on more than 11 million deidentified urine, hair and oral fluid drug test results collected between January and December 2021, offers revealing insights into workforce drug use as employers grapple with creating safe, healthful work environments amid an ongoing recruitment and retention crisis.


  • Download the latest Drug Testing Index brochure

  • DTI drug map
    Our one-of-a-kind interactive map illustrates drug positivity rates in urine testing for amphetamines, cocaine, heroin, marijuana, opiates, and PCP. Compare your state to the national average and see trends over time.
    View positivity rates by zip code