Premium
Validation of a screening method for corticosteroids in doping analysis by liquid chromatography/tandem mass spectrometry
Author(s) -
Deventer K.,
Delbeke F. T.
Publication year - 2003
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1157
Subject(s) - chemistry , chromatography , betamethasone , detection limit , mass spectrometry , electrospray , tandem mass spectrometry , extraction (chemistry) , electrospray ionization , liquid chromatography–mass spectrometry , immunology , biology
A selective and sensitive method for the screening of nine corticosteroids in human urine has been validated. Analyses were performed using an ion trap instrument equipped with an electrospray ionisation (ESI) interface. All corticosteroids were separated in less than 20 min after liquid/liquid extraction with diethyl ether. The limit of detection for all substances was 4 ng/mL or lower. The method was applied to detect betamethasone after the intramuscular injection of Diprophos®. Betamethasone could be detected for up to 12 days after administration. Validation of the chromatographic separation and mass spectrometric identification of mixtures of betamethasone and dexamethasone are also presented. Copyright © 2003 John Wiley & Sons, Ltd.