Abstract
Ethyl glucuronide and ethyl sulfate are minor conjugated metabolites of ethanol that can be detected in urine for several days after last ingestion of ethanol. The monitoring of ethanol use has both clinical and forensic applications and a longer detection window afforded by monitoring these metabolites is obvious. LC-MS/MS is used to analyze diluted urine with deuterated analogs of each analyte as internal standards to ensure accurate quantitation and control for any potential matrix effects. High aqueous HPLC is used to chromatograph the metabolites. Negative ion electrospray is used to introduce the metabolites into the mass spectrometer. Selected reaction monitoring of two product ions for each analyte allows for the calculation of ion ratios which ensures correct identification of each metabolite, while a matrix-matched calibration curve is used for quantitation.
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Slawson, M.H., Johnson-Davis, K.L. (2016). Quantitation of Ethyl Glucuronide and Ethyl Sulfate in Urine Using Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS). In: Garg, U. (eds) Clinical Applications of Mass Spectrometry in Drug Analysis. Methods in Molecular Biology, vol 1383. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-3252-8_18
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DOI: https://doi.org/10.1007/978-1-4939-3252-8_18
Publisher Name: Humana Press, New York, NY
Print ISBN: 978-1-4939-3251-1
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