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• W2034851279 abstract "A rugged and robust liquid chromatographic tandem mass spectrometric (LC–MS/MS) method utilizing dried blood spots (DBS) was developed and validated for the analysis of posaconazole in human whole blood. Posaconazole fortified blood samples were spotted (15 μL) onto Ahlstrom Alh-226 DBS cards and dried for at least 2 h. Punched spots were then extracted by using a mixture of acetonitrile and water containing stable labeled internal standard (IS). Posaconazole and its IS were separated from endogenous matrix components on a Kinetex™ C18 column under gradient conditions with a mobile phase A consisting of 0.1% formic acid and a mobile phase B consisting of 0.1% formic acid in acetonitrile/methanol (70/30, v/v). The analyte and IS were detected using a Sciex API 4000 triple quadrupole LC–MS/MS system equipped with a TurboIonSpray™ source operated in the positive ion mode. The assay was linear over the concentration range of 5–5000 ng/mL. The inter-run accuracy and precision of the assay were −1.8% to 0.8% and 4.0% to 10.4%, respectively. Additional assessments unique to DBS were investigated including sample spot homogeneity, spot volume, and hematocrit. Blood spot homogeneity was maintained and accurate and precise quantitation results were obtained when using a blood spot volume of between 15 and 35 μL. Human blood samples with hematocrit values ranging between 25% and 41% gave acceptable quantitation results. The validation results indicate that the method is accurate, precise, sensitive, selective and reproducible." @default.
• W2034851279 created "2016-06-24" @default.
• W2034851279 creator A5027355296 @default.
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• W2034851279 date "2011-11-01" @default.
• W2034851279 modified "2023-09-23" @default.
• W2034851279 title "A dried blood spots technique based LC–MS/MS method for the analysis of posaconazole in human whole blood samples" @default.
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• W2034851279 doi "https://doi.org/10.1016/j.jchromb.2011.10.008" @default.
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