Forums › Drugs › Research Chemicals › which research chemicals/legal drugs can cause a false positive or make you fail?
does anyone have any experience with this or know of any RC’s that will cause this to happen. Also if you have any legit sites that are 100% trusted not to make you fail please let me know. i used to do mephedrone before i was on probation but alot of people told me that some mephedrone can make you fail tests for amphetamine.
thanks
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Forums › Drugs › Research Chemicals › which research chemicals/legal drugs can cause a false positive or make you fail?