Tag: drug use in the U.S. workforce
Drug Testing Index: A look at 2014-2018
The Quest Diagnostics Drug Testing Index reveals insights into patterns of drug use among the U.S. workforce on its 30th anniversary. Download our timeline.
Workforce drug test positivity rate increases
The Quest Diagnostics Drug Testing Index showed the percentage of positive drug tests among American workers has increased for the first time in more than a decade.