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Homogeneous chemiluminescent assays for free choline in human plasma and whole blood

Authors
Journal
Analytica Chimica Acta
0003-2670
Publisher
Elsevier
Publication Date
Volume
579
Issue
1
Identifiers
DOI: 10.1016/j.aca.2006.07.020
Keywords
  • Chemiluminescence
  • Choline Analysis
  • Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry Correlation
  • Plasma
  • Whole Blood

Abstract

Abstract Choline was oxidized in the presence of choline oxidase and the hydrogen peroxide generated was detected using a chemiluminescent acridinium-9-carboxamide. The dose response for choline (0–150 μM) was established in buffer and was validated for the quantification of choline in human plasma and whole blood. This homogeneous assay was performed in a 96-well microplate format and required minimal sample volume (4 μL) and short analysis time (<5 s per well). The new assay(s) correlated well ( R > 0.98, plasma; R > 0.97, whole blood) with LC-MS/MS.

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