id15306796 pdfMachine by Broadgun Software - a great PDF writer! - a great PDF creator! - http://www.pdfmachine.com http://www.broadgun.com AAnnaallyyttiiccaaIlSlS N : 0974-7419 Volume 15 Issue 8 CCHHEEAMMn InIdIiSSanTT JoRuRrnYaYl Full Paper ACAIJ, 15(8) 2015 [319-338] An ultra fast and sensitive detection of 165 drugs of abuse in human urine using polarity switching ultra performance liquid chromatog- raphy tandem mass spectrometry Sachin Dubey, Shobha Ahi, Alka Beotra*, Tejinder Kaur, Shila Jain National Dope Testing Laboratory, Ministry of Youth Affairs and Sports, CGO Complex, Lodhi Road, New Delhi, 110003, (INDIA) E-mail :
[email protected] ABSTRACT KEYWORDS The screening of wide variety of prohibited substances in a time bound Bioanalytical method; manner by adhering to latest World Anti-Doping Agency (WADA) guide- Sports drug testing; lines is a challenging task for doping control laboratories. The revised crite- UPLC-MS/MS; rion of detection limits (WADATD2013MRPL) has further required the doping Polarity switching; laboratories to review their testing procedures. The present work was aimed WADA. at developing a fast, sensitive and robust analytical method based on solid phase cleanup (SPE) and ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) to achieve the required detection lev- els. The method development involved optimization of deconjugation of phase II metabolites, SPE using mixed-mode ion cartridges for extraction of analytes of wider chemistries; and fast polarity switching UPLC-MS/MS detection. The developed method was validated to detect approximately 165 compounds and/or metabolites prohibited by WADA. The eight min- utes runtime allowed testing of approximately 180 samples in 24 hours at the limit of detection (LOD) of 50% below required detection levels.