title: Validation of a liquid chromatography post-column derivatization assay for the determination of cisplatin in plasma.
abstract: Method validation results are described for a cisplatin LC post-column derivatization assay. Cisplatin plasma samples were treated with acetonitrile and a citrate buffer solution to enhance cisplatin stability. Processed samples were analysed on a chemically generated anion exchange column using a customized post-column derivatization platform and refrigerated autosampler. The UV response was monitored at 290 nm. The retention time of cisplatin was 9 min. The assay was linear from 0.06 to 30.0 micrograms ml-1 (r > 0.998) with inter-run precisions (RSD) of 8.2% (n = 8), 5.9% (n = 8) and 4.0% (n = 8) for low (0.18 microgram ml-1), medium (1.5 microgram ml-1) and high (24.0 micrograms ml-1) quality control samples, respectively. The validated assay was used to monitor cisplatin levels in cisplatin drug interaction studies.
authors.affiliation: Glaxo Inc. Research Institute, Research Triangle Park, NC 27709.
authors.forename: H H
authors.initials: HH
authors.lastname: Farrish
authors.forename: P H
authors.initials: PH
authors.lastname: Hsyu
authors.forename: J F
authors.initials: JF
authors.lastname: Pritchard
authors.forename: K R
authors.initials: KR
authors.lastname: Brouwer
authors.forename: J
authors.initials: J
authors.lastname: Jarrett
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D002945:Cisplatin / Q000097:blood*; D004285:Dogs; D008297:Male
chemical_list: D002945:Cisplatin