Hair tests help trucking firms keep drug users off the road
Milwaukee Journal Sentinel, 7-29-12
Over the last four years, some 38,000 would-be truck drivers applying at Schneider National Inc. have had their hair snipped for a drug test. Of those, 1,411 failed. The analysis detected cocaine, marijuana or other banned substances. Yet more than 90% of those 1,411 applicants were able to pass a urine test – the government-mandated, industry standard used to look for drugs.
In a way, that’s not surprising. Molecules of methamphetamine, tetrahydrocannabinol and other drugs remain in urine for only a few days.
They can stay bound in hair for months or longer.
