Quest Diagnostics Drug Testing Index

Source: Quest Diagnostics, May 2017

From the press release:
Drug use in the American workforce, fueled by illicit drugs, reached the highest positivity rate in 12 years, according to an analysis of more than ten million workforce drug test results released today by Quest Diagnostics (NYSE: DGX), the world’s leading provider of diagnostic information services.

The annual Quest Diagnostics Drug Testing Index™ will be presented at the Drug and Alcohol Testing Industry Association (DATIA) annual conference this week in Orlando, Florida. Overall positivity in urine drug testing among the combined U.S. workforce in 2016 was 4.2 percent, a five percent relative increase over last year’s rate of 4.0 percent, and the highest annual positivity rate since 2004 (4.5%).
Related:
Interactive map showing urine drug test positivity in the United States
Full year 2016 tables