Penn Veterinary Medicine | University of Pennsylvania

Selected Publications

You Youwen, Uboh Cornelius E, Soma Lawrence R, Guan Fuyu, Taylor Daniel, Li Xiaoqing, Liu Ying, Chen Jinwen: Validated UHPLC-MS-MS Method for Rapid Analysis of Capsaicin and Dihydrocapsaicin in Equine Plasma for Doping Control. Journal of analytical toxicology 37(2): 122-32, Mar 2013.

Guan Fuyu, Uboh Cornelius E, Soma Lawrence R, You Youwen, Li Xiaoqing, McDonnell Sue: Ex vivo spontaneous generation of 19-norandrostenedione and nandrolone detected in equine plasma and urine. The Journal of steroid biochemistry and molecular biology 128(1-2): 1-11, Jan 2012.

Soma Lawrence R, Uboh Cornelius E, You Yowen, Guan Fuyu, Boston Raymond C: Pharmacokinetics of intra-articular, intravenous, and intramuscular administration of triamcinolone acetonide and its effect on endogenous plasma hydrocortisone and cortisone concentrations in horses. American journal of veterinary research 72(9): 1234-42, Sep 2011.

Liu Ying, Uboh Cornelius E, Soma Lawrence R, Li Xiaoqing, Guan Fuyu, You Youwen, Chen Jin-Wen: Efficient use of retention time for the analysis of 302 drugs in equine plasma by liquid chromatography-MS/MS with scheduled multiple reaction monitoring and instant library searching for doping control. Analytical chemistry 83(17): 6834-41, Sep 2011.

You Youwen, Uboh Cornelius E, Soma Lawrence R, Guan Fuyu, Li Xiaoqing, Liu Ying, Rudy Jeffrey A, Chen Jinwen, Tsang Deborah: Simultaneous separation and determination of 16 testosterone and nandrolone esters in equine plasma using ultra high performance liquid chromatography-tandem mass spectrometry for doping control. Journal of chromatography. A 1218(26): 3982-93, Jul 2011.

Guan Fuyu, Uboh Cornelius E, Soma Lawrence R, Rudy Jeffrey: Sequence elucidation of an unknown cyclic peptide of high doping potential by ETD and CID tandem mass spectrometry. Journal of the American Society for Mass Spectrometry 22(4): 718-30, Apr 2011.

Liu Ying, Uboh Cornelius E, Soma Lawrence R, Li Xiaoqing, Guan Fuyu, You Youwen, Rudy Jeffrey A, Chen Jin-Wen: Analysis of gabapentin in equine plasma with measurement uncertainty estimation by liquid chromatography-tandem mass spectrometry. Journal of analytical toxicology 35(2): 75-84, Mar 2011.

Liu Ying, Uboh Cornelius E, Soma Lawrence R, Li Xiaoqing, Guan Fuyu, You Youwen, Rudy Jeffrey A, Chen Jin-Wen: Detection and confirmation of 60 anabolic and androgenic steroids in equine plasma by liquid chromatography-tandem mass spectrometry with instant library searching. Drug testing and analysis 3(1): 54-67, Jan 2011.

Guan Fuyu, Uboh Cornelius E, Soma Lawrence R, You Youwen, Liu Ying, Li Xiaoqing: High-throughput UHPLC-MS/MS method for the detection, quantification and identification of fifty-five anabolic and androgenic steroids in equine plasma. Journal of mass spectrometry : JMS 45(11): 1270-9, Nov 2010.

Guan Fuyu, Uboh Cornelius E, Soma Lawrence R, You Youwen, Liu Ying, Li Xiaoqing: Correlation of product ion profiles with molecular structures of androgenic and anabolic steroids in ESI MS/MS. Journal of mass spectrometry : JMS 45(11): 1261-9, Nov 2010.