How many nanograms do they test for in a urine test for THC when sent out to the laboratory
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Anonymous
ANSWERS: 4
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UP TO 400
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50ng/ml if it needs a confirm 15ng
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A lab test cut-off is 15ng A panel test (Emit) is 50ng
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DETECTABILITY is down to 15ng/deciliter POSITIVE is down to 50ng/deciliter. This is so if your friends smoke pot and you don't, you won't test positive. "if 4 people are in a VW beetle: 3 are smoking and one is not, as long as more than 1 joint is not smoked, the 4th person should NOT test positive" - Senior lab tech in toxicology
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