title: Automated analysis of quetiapine and other antipsychotic drugs in human blood by high performance-liquid chromatography with column-switching and spectrophotometric detection.
abstract: An automated HPLC method with column switching is described for the determination of quetiapine, clozapine, perazine, olanzapine and metabolites in blood serum. After clean-up on silica C8 material (20 microm particle size) drugs were separated on ODS Hypersil C18 material (5 microm; column size 250 mm x 4.6 mm i.d.) within 25 min and quantified by ultraviolet (UV) detection at 254 nm. The limit of quantification ranged between 10 and 50 ng/ml. At therapeutic concentrations of the drugs, the inter-assay reproducibility was below 10%. Analyses of drug concentrations in serum of 75-295 patients treated with therapeutic doses of the antipsychotic drugs revealed mean+/-S.D. steady state concentrations of 139+/-136 ng/ml for quetiapine, 328+/-195 ng/ml for clozapine, 48+/-27 ng/ml for olanzapine and 71+/-52 ng/ml for perazine. The method was thus suitable for routine therapeutic drug monitoring and may be extended to other drugs.
authors.affiliation: Department of Psychiatry, University of Mainz, Untere Zahlbacher Str. 8, D-55131 Mainz, Germany.
authors.forename: Julia
authors.initials: J
authors.lastname: Sachse
authors.forename: Johannes
authors.initials: J
authors.lastname: Köller
authors.forename: Sebastian
authors.initials: S
authors.lastname: Härtter
authors.forename: Christoph
authors.initials: C
authors.lastname: Hiemke
mesh_terms: D014150:Antipsychotic Agents / Q000097:blood* / Q000627:therapeutic use; D001569:Benzodiazepines / Q000097:blood / Q000627:therapeutic use; D002138:Calibration; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods*; D003024:Clozapine / Q000097:blood / Q000627:therapeutic use; D003987:Dibenzothiazepines / Q000097:blood* / Q000627:therapeutic use; D006801:Humans; D000077152:Olanzapine; D010464:Perazine / Q000097:blood / Q000627:therapeutic use; D000069348:Quetiapine Fumarate; D015203:Reproducibility of Results; D013056:Spectrophotometry, Ultraviolet / Q000379:methods
chemical_list: D014150:Antipsychotic Agents; D003987:Dibenzothiazepines; D001569:Benzodiazepines; D000069348:Quetiapine Fumarate; D010464:Perazine; D003024:Clozapine; D000077152:Olanzapine