[FONT=.SF UI Text][FONT=.SFUIText]Hello there. I recently took 240 mg of DXM today and then found out that I would be taking a drug test in 72 hours. Now I know DXM can cause false positives for both PCP and Opiates because that happened to me when I used to be really into it back when I was like 15. I had taken some the night before back then and the morning of I took a test and popped for both. Anyways I know there's a lot of threads and posts out there but there is a lot of conflicting information and not many sources say exactly how long DXM can cause a false positive at any dose for. So if anyone could give me a solid answer and put this this matter to rest I'd appreciate it![/FONT][/FONT]