It turns out you don’t need to actually get high to fail a drug test. A study by the University of Freiburg in Germany found that by just rolling a joint, without every smoking it, one can produce a false positive drug test. Researchers had 10 participants roll a joint over five consecutive days, and by the fifth day, most participants had detectable amounts of THC and THCA in their hair (which lasted up to four weeks).

The findings of the study could change the way the courts analyze drug test findings as proving that “beyond a reasonable doubt,” the accused did in fact smoke pot, and wasn’t just exposed to it by breaking up nugs. Lawyers will now have a stronger argument to throw out toxicology findings as evidence. For stoners, the study sounds like yet another way to get high without actually lighting up.


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