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Prevalence of Cannabidiol, Δ9- and Δ8-Tetrahydrocannabinol and Metabolites in Workplace Drug Testing Urine Specimens
Given the recent popularity of cannabidiol (CBD) use and the emergence of Δ8-tetrahydrocannabinol (Δ8-THC), the prevalence and concentration of these and other cannabinoids was investigated in 2,000 regulated and 4,000 non-regulated specimens from workplace drug testing. All specimens were screened using LC-MS-MS for the presence of 7-hydroxy-CBD (7-OH-CBD) and ∆9-tetrahydrocannabinol-9-carboxylic acid (Δ9-THC-COOH), with a cutoff of 2 ng/mL. Specimens screening positive by LC-MS-MS weredoi:10.1093/jat/bkac013 pmid:35260906 fatcat:iddlntmlbjaedn5xqabli6t2pu