Isocratic High-Performance Liquid Chromatographic Method with Ultraviolet Detection for Simultaneous Determination of Levels of Voriconazole and Itraconazole and Its Hydroxy Metabolite in Human Serum

Abstract

A simple, specific method is presented for simultaneous determination of voriconazole and itraconazole and its metabolite, hydroxyitraconazole, in human serum using one-step liquid-liquid extraction and high-performance liquid chromatography. Linearity tests ranged from 0.1 to 8.0 microg/ml; the minimum detectable concentration was 0.03 microg/ml.