Urine Drug Testing for Chronic Pain Management

THC in foodstuffs and beverages, thus lowering THC intake from hemp containing foods and reducing the risk of a positive urine test. Regulations in Canada, the main supplier of hemp seeds to the USA, limit THC levels in hemp seed products to 10 parts per million (ppm).13 There are several other problems with carboxy-THC analysis in urine. ................
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