i pissed in a cup and took a dropper and took some piss and dripped it on the sample spot. after 10 minutes it came up with the control passed, meaning i had traces of THC, cocaine, opiates, and methamphetamines in my system. the meth is from concerta, im sure of that, but the other shit i dont know. when i took it, i hadnt smoked weed in like 2-3 months. i have nevvvver done blow or heroin, so i have no idea what this shit is from. last time i took ibuprofen or vikes was like 4 months ago, after i broke my ankle. im confused!