Positive drug test results reach 20-year high, spiking from a decade ago

Positive drug test results among America’s workforce reached their highest rate last year since 2001 and were up more than 30 percent in the combined U.S. workforce from an all-time low in 2010-2012, according to a new analysis by Quest Diagnostics, the world’s leading provider of diagnostic information services. Based on 11 million-plus deidentified urine, hair and oral fluid drug…

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