Target analyte quantification by isotope dilution LC-MS/MS directly referring to internal standard concentrations-validation for serum cortisol measurement

Maier, Barbara und Vogeser, Michael (April 2013): Target analyte quantification by isotope dilution LC-MS/MS directly referring to internal standard concentrations-validation for serum cortisol measurement. In: Clinical chemistry and laboratory medicine : CCLM / FESCC, Vol. 51, No. 4: pp. 833-837

Abstract

Isotope dilution LC-MS/MS methods used in the clinical laboratory typically involve multi-point external calibration in each analytical series. Our aim was to test the hypothesis that determination of target analyte concentrations directly derived from the relation of the target analyte peak area to the peak area of a corresponding stable isotope labelled internal standard compound [direct isotope dilution analysis (DIDA)] may be not inferior to conventional external calibration with respect to accuracy and reproducibility.

• Item Type: Journal article
• Form of publication: Publisher's Version
• Faculties: Medicine
• Subjects: 600 Technology > 610 Medicine and health
• ISSN: 1437-4331
• 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