title: Semi-quantitative thin-layer mass-screening detection of 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic acid in human urine.
mesh_terms: D002188:Cannabis; D002855:Chromatography, Thin Layer; D013759:Dronabinol / Q000031:analogs & derivatives* / Q000652:urine; D006801:Humans; D019966:Substance-Related Disorders / Q000652:urine*
chemical_list: C016780:11-nor-delta(9)-tetrahydrocannabinol-9-carboxylic acid; D013759:Dronabinol