title: Antibody-mediated extraction of the main tetrahydrocannabinol metabolite, 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic acid, from human urine and its identification by gas chromatography-mass spectrometry in the sub-nanogram range.
mesh_terms: D013759:Dronabinol / Q000031:analogs & derivatives* / Q000378:metabolism* / Q000652:urine; D005445:Flunitrazepam / Q000652:urine; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D006868:Hydrolysis; D007118:Immunoassay
chemical_list: C016780:11-nor-delta(9)-tetrahydrocannabinol-9-carboxylic acid; D005445:Flunitrazepam; D013759:Dronabinol