A UHPLC–MS/MS method for the quantification of 7α-hydroxy-4-cholesten-3-one to assist in diagnosis of bile acid malabsorption
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Authors
Prost, Jean-Christophe
Brunner, Félix
Grob, Christian
Bovet, Cédric
Largiadèr, Carlo R.
Fiedler, Georg Martin
Juillerat, Pascal
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Publication date
01/2017
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01A - Journal article
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Parent work
Clinical Mass Spectrometry
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Volume
3
Issue / Number
Pages / Duration
1-6
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Elsevier
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Abstract
Bile acids malabsorption (BAM) is encountered in numerous gastrointestinal pathologies and is a good example of a treatable cause of watery diarrhea after ileal resection. The gold standard for diagnosing BAM is the selenium homocholic acid taurine test (SeHCAT), an expensive and complex analysis. An alternative method is the quantification of 7α-hydroxy-4-cholesten-3-one (C4). Here, we present a simple, ultra high-performance liquid chromatography–tandem mass spectrometry method to measure C4 in human serum. To avoid time consuming sample preparation (e.g., derivatization, solid phase extraction), we used absorption chemistry-based extraction plates. This method demonstrates a lower limit of quantification of 5 ng/mL and is linear over a concentration range from 5 to 300 ng/mL (R2 = 0.9977). Inaccuracy and imprecision were less than 15%. The validated method is currently used for routine measurement of C4 from serum in patients to confirm BAM diagnosis.
Keywords
7α-Hydroxy-4-cholesten-3-one, Bile acid malabsorption, Ultra-performance liquid chromatography–tandem mass spectrometry, Method validation
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2376-9998
2213-8005
2213-8005
Language
English
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Yes
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Published
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Citation
PROST, Jean-Christophe, Félix BRUNNER, Christian GROB, Christian BERCHTOLD, Götz SCHLOTTERBECK, Cédric BOVET, Carlo R. LARGIADÈR, Georg Martin FIEDLER und Pascal JUILLERAT, 2017. A UHPLC–MS/MS method for the quantification of 7α-hydroxy-4-cholesten-3-one to assist in diagnosis of bile acid malabsorption. Clinical Mass Spectrometry. Januar 2017. Bd. 3, S. 1–6. DOI 10.1016/j.clinms.2017.02.001. Verfügbar unter: http://hdl.handle.net/11654/25898