title: Analysis of urine for 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic acid using Sep-PAK cartridges for sample cleanup.
mesh_terms: D013759:Dronabinol / Q000031:analogs & derivatives* / Q000652:urine; D008401:Gas Chromatography-Mass Spectrometry; D006868:Hydrolysis
chemical_list: C016780:11-nor-delta(9)-tetrahydrocannabinol-9-carboxylic acid; D013759:Dronabinol