title: Analysis of dihydrocodeine in urine using Sep-Pak C18 cartridges for sample cleanup.
abstract: A rapid and precise method for the isolation and identification of dihydrocodeine from urine is reported. The narcotic is isolated from urine using Sep-Pak C18 cartridges for cleanup, requiring less than 30 min for preparation. Identification is performed by gas chromatography/mass spectrometry.
mesh_terms: D002849:Chromatography, Gas; D003061:Codeine / Q000031:analogs & derivatives* / Q000652:urine; D006801:Humans; D013058:Mass Spectrometry; D012822:Silicon Dioxide
chemical_list: D012822:Silicon Dioxide; C042953:octadecyl silane-bonded silica; C014481:dihydrocodeine; D003061:Codeine