I had a positive result for Benzodiazepine. I know for a fact I don't take that or any medications. I don't even like taking medicine. I told the employee health nurse that had to be wrong. She said she will send it to the lab so they can test it.
The only thing I had taken was Formula 303 Pain Relieve Natural Muscle Relaxant, which is over the counter that the chiropractor gave me when I was in a car wreck. I informed her that's all I had and it was only one tablet and the first time I've even taken it, which is a natural relaxant.
She said she never heard of that causing a false positive. Well, I researched it and I've seen that people had false positives from it. I wasn't worried anyway because I know for a fact I don't take prescription medication.
Update from today: I got the call from the employee health nurse that my drug screen was negative. I told her I knew it was negative and that natural relaxant was the one thing I had, which I now threw away. So if anyone ever takes that OTC Natural Muscle Relaxant, just know that in fact, it will cause a false positive drug test. I'm a witness to it.