Quantification of voriconazole in plasma by liquid chromatography-tandem mass spectrometry

Vogeser, Michael; Schiel, Xaver and Spöhrer, Ute (2005): Quantification of voriconazole in plasma by liquid chromatography-tandem mass spectrometry. In: Clinical Chemistry and Laboratory Medicine, Vol. 43, No. 7: pp. 730-734

Abstract

A convenient liquid chromatography-tandem mass spectrometry method for the quantification of the triazole antifungal agent voriconazole in plasma samples is described. Fenbuconazole is used as an internal standard. After protein precipitation, automated solid-phase extraction is applied. Electrospray ionization in the positive mode is used and the following mass transitions are recorded: voriconazole, 350 -> 127; and fenbuconazol, 337 -> 125. The analytical run time is 4 min. The response was linear from 78 to 5000 mu g/L. The total coefficient of variation (n=16) was 12.6% for a low-concentration pool (143 mu g/L), 4.7% for a medium-concentration pool (419 mu g/L), and 5.0% for a high-concentration pool (4304 mu g/L). The method is proposed for future investigations that should be performed to test the hypothesis that therapeutic drug monitoring of voriconazole is clinically useful.

• Item Type: Journal article
• Form of publication: Publisher's Version
• Faculties: Medicine
• Subjects: 600 Technology > 610 Medicine and health
• ISSN: 1434-6621
• Alliance/National Licence: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
• Language: English