The Quest Diagnostics Drug Testing Index™ (DTI) 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 new DTI report is based on more than 10.6 million deidentified urine, hair and oral-fluid drug test results reported between January and December 2022, aimed at providing insight into behavior seen in workers across the combined U.S. workforce by industry and drug type. The combined U.S. workforce includes the general U.S. workforce of mostly company-policy testing by private employers as well as the federally mandated, safety-sensitive workforce, which includes federal employees and the transportation and nuclear power industries, and can include workers such as pilots, truck drivers, train conductors and others required to drug test under federal legislation.