title: [Application of extraction freezing for analysis of 1,4-benzodiazepines in urine].
abstract: A test for 1,4-benzodiazepines in urine is described. Extraction and freezing were used at the stage of the sample preparation. Metrological characteristics of the method are presented. Selectivity of the test is provided by optimal conditions for high-performance liquid chromatography. The technique is simple to use and cost-effective.
authors.forename: V N
authors.initials: VN
authors.lastname: Bekhterev
authors.forename: S N
authors.initials: SN
authors.lastname: Gavrilova
authors.forename: I V
authors.initials: IV
authors.lastname: Maslakov
mesh_terms: D001569:Benzodiazepines / Q000652:urine*; D002851:Chromatography, High Pressure Liquid; D005615:Freezing; D006801:Humans; D010076:Oxazepam / Q000652:urine; D012015:Reference Standards; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D052616:Solid Phase Extraction; D015813:Substance Abuse Detection / Q000379:methods*
chemical_list: D001569:Benzodiazepines; C017928:phenazepam; D010076:Oxazepam; C468549:Bz-423