Abstract
A sensitive and rapid method based on liquid chromatography–triple-quadrupole tandem mass spectrometry (LC-MS/MS) with electrospray ionization (ESI) has been developed and validated for the screening and confirmation of 44 exogenous anabolic steroids (29 parent steroids and 15 metabolites) in human urine. The method involves an enzymatic hydrolysis, liquid–liquid extraction, and detection by LC-MS/MS. A triple-quadrupole mass spectrometer was operated in positive ESI mode with selected reaction monitoring (SRM) mode for the screening and product ion scan mode for the confirmation. The protonated molecular ions were used as precursor ions for the SRM analysis and product ion scan. The intraday and interday precisions of the target analytes at concentrations of the minimum required performance levels for the screening were 2-14% and 2-15%, respectively. The limits of detection for the screening and confirmation method were 0.1-10 ng/mL and 0.2-10 ng/mL, respectively, for 44 steroids. This method was successfully applied to analysis of urine samples from suspected anabolic steroid abusers.
Two-step procedure for the screening and confirmation of anabolic steroids in doping control analyses: simultaneous multiresidue screening method based on LC-MS/MS with selected reaction monitoring and generic confirmatory method based on LC-MS/MS with product ion scan
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Acknowledgements
This research project (e101307-2009-01) was supported by the Sports Promotion Fund of the Seoul Olympic Sports Promotion Foundation from the Ministry of Culture, Sports and Tourism.
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Byoung Wook Jeon, Hye Hyun Yoo and Eun Sook Jeong contributed equally to this work.
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Jeon, B.W., Yoo, H.H., Jeong, E.S. et al. LC-ESI/MS/MS method for rapid screening and confirmation of 44 exogenous anabolic steroids in human urine. Anal Bioanal Chem 401, 1353–1363 (2011). https://doi.org/10.1007/s00216-011-5210-1
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DOI: https://doi.org/10.1007/s00216-011-5210-1