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- W2344651686 abstract "We developed and validated a measurement procedure for glucose using liquid chromatography-isotope dilution tandem mass spectrometry. The proposed method is intended to be used for setting target values in EQAS samples and for certification of glucose reference materials, including those in biological matrices.Serum samples were spiked with internal standard 13C6 D-glucose. Protein precipitation was performed with ethanol. The samples were vortexed and centrifuged. An aliquot of the supernatant was evaporated to dryness, the residue dissolved in elution buffer and injected into the LC-MS/MS system. Measurements were performed in the positive ion mode monitoring the Cs+ adducts for glucose at m/z 313 --> 132.9 and m/z 319 --> 132.9 for the internal standard.The coefficient of variation (CV) of the measurement procedure for lyophilized, liquid, and fresh serum samples was between 0.27 and 1.77%. The bias from certified target values for NIST reference materials was < or = 0.62%. A Deming regression comparison demonstrated a good correlation of results obtained with the proposed LC-ID-MS/MS method and target values obtained in the internationally accepted IFCC-RELA ring trial using JCTLM-recognized reference measurement procedures.The proposed LC-ID-MS/MS measurement procedure with traceability to SI units shows excellent accuracy and precision and is suitable for use as reference measurement procedure for certification of target values in lyophilized and fresh serum samples." @default.
- W2344651686 created "2016-06-24" @default.
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- W2344651686 date "2014-01-01" @default.
- W2344651686 modified "2023-09-23" @default.
- W2344651686 title "Measurement Procedure for Glucose in Serum Using Liquid Chromatography Isotope Dilution - Tandem Mass Spectrometry (LC-ID-MS/MS)" @default.
- W2344651686 doi "https://doi.org/10.7754/clin.lab.2014.131116" @default.
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