Quest: Positive drug test rates hit 16-year high with weed topping list
Workforce drug positivity rates hit a 16-year high in 2019, with positive marijuana test rates climbing by double digits across almost all testing categories, according to Quest Diagnostics’ annual Drug Testing Index. Positivity rates in the U.S. workforce increased in urine drug tests to 4.5%, the highest level since 2003, and more than 28% higher […]
