Quantification of iohexol in serum by high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS)

Faye B. Vicente, Gina Vespa, Alan Miller, Shannon Haymond

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Scopus citations

Abstract

Iohexol is a nonradioactive contrast medium, and its clearance from serum or urine is used to measure glomerular filtration rate (GFR). GFR is the most useful indicator of kidney function and progression of kidney disease. GFR determination using iohexol clearance is increasingly being applied in clinical practice, given its advantages over and correlation with inulin. We describe a high-performance liquid chromatography tandem mass spectrometry (LC-MS/MS) method for iohexol clearance, requiring only 50 μL of serum. The sample preparation involves protein precipitation with LC/MS-grade methanol, containing ioversol as the internal standard. Samples are centrifuged and supernatant is dried under nitrogen gas at room temperature. Samples are reconstituted with mobile phase (ammonium acetate-formic acid- water). Iohexol is separated using an HPLC gradient method on a C-8 analytical column. MS/MS detection is in the multiple-reaction monitoring (MRM) mode and the transitions monitored are m/z 822.0 to m/z 804.0 and m/z 807.0 to m/z 588.0 for iohexol and ioversol, respectively.

Original languageEnglish (US)
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc
Pages185-193
Number of pages9
DOIs
StatePublished - May 1 2016

Publication series

NameMethods in Molecular Biology
Volume1383
ISSN (Print)1064-3745

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Keywords

  • Glomerular filtration rate
  • Iohexol
  • Liquid chromatography
  • Mass spectrometry
  • Quantification
  • Serum

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

Cite this

Vicente, F. B., Vespa, G., Miller, A., & Haymond, S. (2016). Quantification of iohexol in serum by high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS). In Methods in Molecular Biology (pp. 185-193). (Methods in Molecular Biology; Vol. 1383). Humana Press Inc. https://doi.org/10.1007/978-1-4939-3252-8_20