title: Isolation of benzoylecgonine from urine using solid-phase extraction.
abstract: An improved procedure for the extraction of benzoylecgonine from urine is described. The method uses Drug-Clean GC/MS Benzoylecgonine solid-phase extraction tubes and a simple extraction protocol to provide high recoveries of the analyte while simultaneously decreasing the preparation time.
authors.affiliation: Alltech Associates, Applied Science Laboratories, State College, PA 16801.
authors.forename: R E
authors.initials: RE
authors.lastname: Anderson
authors.forename: G L
authors.initials: GL
authors.lastname: Nixon
mesh_terms: D003042:Cocaine / Q000031:analogs & derivatives* / Q000302:isolation & purification / Q000652:urine; D008401:Gas Chromatography-Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D006801:Humans
chemical_list: C005618:benzoylecgonine; D003042:Cocaine