There's several reasons you tested positive for THC. The usual culprit is human error in the testing facility, using outdated reagents, overworked, underpaid employees, mistakes in the chain of custody, ect. Rarely does second hand smoke cause a false positive result. You won't get any answers from the testing facility either. That's IF you can even get someone to talk with you about the false positive. Usually the physician who called you with the results will leave a call back number. When he/she asked you if there's any medical reason THC would be in your system, what did you say? I would call that doctor back and ask the steps you need to take for re-testing. Good luck
