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  • Title: Direct injection LC-MS/MS method for the determination of teicoplanin in human plasma.
    Author: Kim KY, Cho SH, Song YH, Nam MS, Kim CW.
    Journal: J Chromatogr B Analyt Technol Biomed Life Sci; 2016 Jan 01; 1008():125-131. PubMed ID: 26655103.
    Abstract:
    A direct injection-based, simple, accurate, and robust LC-MS/MS method was developed and validated for the determination of teicoplanin in human plasma. Patient plasma samples were diluted in an aqueous buffer prior to injection into the LC-MS/MS system. Chromatographic separation was achieved using a Cadenza HS-C18 column and a gradient mixture of acetonitrile-water (both containing 0.1% formic acid) as the mobile phase at a flow rate of 0.5mL/min. The analytes were detected in multiple reaction monitoring mode with positive ion electrospray ionization. The concentration of teicoplanin was determined as the sum of six components (A3-1, A2-1, A2-2, A2-3, A2-4, and A2-5). The calibration curve was linear over a concentration range of 1-50mg/L, which covered the clinically accepted trough and therapeutic plasma levels. The intra- and inter-day precision and accuracy values were both less than 15%. This validated method was successfully applied to therapeutic drug monitoring of teicoplanin in routine clinical practice. Thus, we expect it to be useful for the determination of teicoplanin concentration in human plasma.
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