Urine or Saliva THC Test? 8 Kits Compared on Detection Windows
The short answer: pick urine when you need to know whether someone has used cannabis in the past several days, and pick oral fluid when you need to know whether they used recently. Urine tests detect the metabolite 11-nor-delta-9-THC-9-COOH, which lingers after the effects have worn off. Saliva tests detect parent THC, which correlates with […]
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