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What substance could make a drug test come back positive for methamphetamine's?
Wiki User
∙ 12y ago
Erowid.org has a list of all the substances that can throw a false positive for meth. It is a VERY long list--probably 80 different drugs including diet aids, cold pills and a lot of prescription medicines.
Meth is a phenethylamine-class drug AND an amphetamine-class drug, so any drug that looks like an amphetamine, or any drug that looks like a phenethylamine (and there are a BUNCH of these, most not being any fun at all) will trigger a false positive for meth.
It gets better: the first order metabolite of meth is amphetamine, so anything that will throw a false positive on an amphetamine test will also throw a false positive on a meth test.
That having been said, most people don't test for meth at all--they look for amphetamine because methamphetamine (amphetamine with a methyl group attached) demethylizes in the liver quickly.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoi know 12 or 24 hour sudafed or strong behind the counter cough and cold medications will make you test positive. usually if you have to sign for it, you will fail a urine test.
Wiki User
∙ 11y agoeverything bagels. and poppy seeds but you will need a lot of poppy seeds. may allah be with you son .
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