Prevalence of Cannabidiol, Δ9- and Δ8-Tetrahydrocannabinol and Metabolites in Workplace Drug Testing Urine Specimens Posted on April 11, 2022April 11, 2022 By Becky Carter Svante Vikingsson, Ruth E Winecker, Edward J Cone, David J Kuntz, Brian Dorsey, Martin Jacques, Melanie Senter, Ronald R Flegel, Eugene D Hayes J Anal Tox; 2022 Access article Cannabis and Cannabinoids, Chemistry, Crime Scene Investigation and Reconstruction, DREs / Traffic Safety Resource Prosecutors, Seized Drugs/Controlled Substances, Toxicology