Tag: Department of Transportation (DOT)
Drug Testing Index: A look at 2003 – 2007
The Quest Diagnostics Drug Testing Index reveals insights into patterns of drug use among the American workforce. As we celebrate our 30th anniversary, we take a deeper look at overall positivity rates and key milestones from 2003 to 2007.
Drug Testing Index: A look at 1998 – 2002
The Quest Diagnostics Drug Testing Index reveals insights into patterns of drug use among the American workforce. As we celebrate our 30th anniversary, we take a deeper look at overall positivity rates and key milestones from 1998 to 2002.
