i havent smoked weed in about a year, ate some shrooms about 3 months ago, and failed a urine test, they said i tested positive for benzodiazepines. I havent taken in pills this entire year except for otc aspirin and valerian root which is a supplement for sleeping.... How the hell do i do drugs and they dont show up in my urine test, but i fail the test for benzodiazepines which i have never taken in my life....