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Cannabinoid Screen and Confirmation (Urine)
This is a 2-part urine test to look for delta-9-tetrahydrocannabinol, or THC. ... A positive result can mean recent and past marijuana use. The urine ...
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OBJECTIVE TESTING – URINE AND OTHER DRUG TESTS
by SE Hadland · 2016 · Cited by 104 — If any substances are positive on the initial IA, a separate quantity of the same sample is then subjected to GC-MS as a confirmatory test for ...
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Cannabis drug testing - Wikipedia
Most cannabis drug tests yield a positive result when the concentration of THC-COOH in urine exceeds 50 ng/mL. Urine testing is an immunoassay based test on ...
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