Urinary Tetrahydrocannabinol After 4 Weeks of a Full-Spectrum, High-Cannabidiol Treatment in an Open-label Clinical Trial Posted on January 21, 2022February 3, 2022 By Becky Carter M. Kathryn Dahlgren, PhD, Kelly A. Sagar, PhD, Ashley M. Lambros, BS, Rosemary T. Smith, BS, Staci A. Gruber, PhD JAMA Psych; 78(3); 2021 Access article Cannabis and Cannabinoids, Chemistry, DREs / Traffic Safety Resource Prosecutors, Seized Drugs/Controlled Substances, Toxicology