My husband had to stop all opioid use for 24 hrs before he gave a urine sample for a UA before starting suboxone. The dr. said his urine showed crystal meth. and we were upset and shocked as both myself and husband KNOW FOR CERTAIN that this was WRONG. He's never tried the stuff at all. Dr. was willing to dismiss it saying it maybe the result of some of his other medications interacting with each other. The only thing I can find to prove that is he just started taking amoxicillin 9/13/18 and the UA was yesterday. Being in withdrawals his stomach was upset so he took some pepto and I just read where it says to never mix pepto with amoxicillin. So did that cause the meth positive in his UA?