What will afford a false positive for a drug oral exam?

i was just randomly curious as to what things you drink or drink that will give you a positive drug test even if you don't do drugs...not that i have have this problem or anything, i was just wondering...and perhaps why?
Answers:
Just as an example, the antibiotics ampicillin and amoxicillin can experiment false positive for cocaine. There are a host of others. Source(s): Pharmacist
Poppy seeds found in bagels and other foods. It can test positive for heroin and opium. Source(s): Pharmacy student... but this is a short time ago a random fact i heard from somewhere, pretty sure it be proven true on the tv show Myth Busters too.
You can look here for false positives Source(s): http://www.xlar.com/articles/False-Posit…

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