Quest Diagnostics: U.S. Workforce Drug Testing Positivity Hits 16-Year High

From Quest Diagnostics: 

"As data from the NSDUH examines self-reported drug use by Americans, the Quest Diagnostics Drug Testing Index™ for the same time period also showed workforce drug positivity hit a sixteen-year high in [the U.S.]. Marijuana positivity climbed by double digits across nearly all employee testing categories, while opiate and heroin positivity declined. Additionally, methamphetamine positivity in the general U.S. workforce testing increased nearly 12% over the past 5 years."

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