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When testing for marijuana what does a result of 517ng ml in urine mean?
Wiki User
∙ 14y ago
It means you smoke a LOT of weed.
Getting a result in nanograms per milliliter means they put your urine in a testing machine. First they put the urine in an EMIT or ELISA system. This tech just looks for cannabinoid metabolites in your urine, so 517ng/ml means you smoke quite a bit of pot--the machine won't even show you as positive until you break 50ng/ml, so you're ten times the minimum.
The next test if you flunk EMIT is GC/MS. This machine can segregate metabolites, so they look for one specific one--the metabolite for delta-9-THC. Therefore, the cutoff is quite a bit lower--if you've got more than 15ng/ml of delta-9-THC in your sample you fail. If you have 517ng/ml of delta-9-THC in your sample marijuana isn't your problem; dying from smoke inhalation is.
Wiki User
∙ 14y ago
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