title: Interference by ritodrine in GC/MS confirmation of delta-9-tetrahydrocannabinol-9-carboxylic acid in urine.
authors.forename: B I
authors.initials: BI
authors.lastname: Podkowik
authors.forename: M L
authors.initials: ML
authors.lastname: Repka
authors.forename: M L
authors.initials: ML
authors.lastname: Smith
mesh_terms: D002853:Chromatography, Liquid; D013759:Dronabinol / Q000031:analogs & derivatives* / Q000652:urine; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D007477:Ions; D012015:Reference Standards; D012312:Ritodrine / Q000737:chemistry* / Q000652:urine
chemical_list: D007477:Ions; D013759:Dronabinol; C025351:delta(9)-tetrahydrocannabinolic acid; D012312:Ritodrine