title: Simple and rapid docetaxel assay in plasma by protein precipitation and high-performance liquid chromatography-tandem mass spectrometry.
abstract: A simple, rapid and low cost sample preparation method was developed for quantification of docetaxel in mouse plasma by high-performance liquid chromatography/tandem mass spectrometry with paclitaxel as the internal standard. A small volume of plasma (40 microl) and one-step protein precipitation using methanol and acetonitrile (1:1 (v/v)) were used for sample preparation. The calibration curve for docetaxel in mouse plasma was linear over the range 25-2500 nM. The detection limit was 8 nM. The lower limit of quantitation is 25 nM. The intra- and inter-day precisions (CV) of analysis were 9.5 and 9.7% for the low quality control (LQC), 5.5 and 4.9% for the medium quality control (MQC) and 3.9 and 6.3% for the high quality control (HQC), respectively. The accuracy was 102.5% for LQC, 97.9% for MQC and 108.8% for HQC. This assay has now been applied to evaluation of mouse pharmacogenetics and other clinical pharmacology applications.
authors.affiliation: Department of Medicine, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8069, St. Louis, MO 63110, USA.
authors.forename: Weiying
authors.initials: W
authors.lastname: Hou
authors.forename: James W
authors.initials: JW
authors.lastname: Watters
authors.forename: Howard L
authors.initials: HL
authors.lastname: McLeod
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000097:blood*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D000077143:Docetaxel; D005260:Female; D013058:Mass Spectrometry / Q000379:methods*; D051379:Mice; D011506:Proteins / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D043823:Taxoids / Q000097:blood*
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D011506:Proteins; D043823:Taxoids; D000077143:Docetaxel