New Bolton Center Kennett Square, PA
Emergencies & Appointments:
Ryan Hospital Philadelphia, PA


Research Associate Professor of Equine Forensic Chemistry, University of Pennsylvania, School of Veterinary Medicine PA Equine Toxicology and Research Lab

Analytical Research and Forensics Coord., University of Pennsylvania Equine Toxicology and Research Laboratory

Contact Information:
University of Pennsylvania
School of Veterinary Medicine
Pennsylvania Equine Toxicology and Research Lab
220 E. Rosedale Avenue

Equine forensic and anti-doping analysis; Equine drug metabolism, pharmacokinetics (DMPK) and toxicology; Development and validation of bioanalytical methods. High throughput analysis of drug and drug metabolites at low concentrations in complex biological matrices.

Equine anti-doping control analysis

You, Y.W., J.R. Missanelli, R.M. Proctor, J.E. Haughan, M.A. Robinson Simultaneous quantification and confirmation of oxycodone and its metabolites in equine urine using ultra-high performance liquid chromatography-tandem mass spectrometry J. Chromatogr. B : , 2024.

You, Y.W., R.M. Proctor, J.E. Haughan, J.R. Missanelli, M.A. Robinson. Use of liquid chromatography-tandem mass spectrometry to quantify and confirm fentanyl metabolite N-[1-(2-Phenethy-4-Piperidinyl)] Maloanilinic Acid in equine urine for doping control. J. Anal. Toxicol. : , 2023.

Haughan, J. E. Missanelli, J. R. You, Y. W. Stefanovski, D. Soma, L. R. Robinson, M. A. Pharmacokinetics of glaucine after intravenous and oral administrations and detection of systemic aporphine alkaloids after ingestion of tulip poplar shavings in horses. J. Vet. Pharmacol. Ther. : , 2022.

Guan, F. Y. You, Y. W. Fay, S. Li, X. Q. Robinson, M. A. Novel Algorithms for Comprehensive Untargeted Detection of Doping Agents in Biological Samples. Anal. Chem. : , 2021.

You, Y.W., R.M. Proctor, K. Guo, X.Q. Li, E. Xue, F.Y. Guan, M.A. Robinson Use of high resolution/accurate mass full scan/data-dependent acquisition for targeted/nontargeted screening in equine doping control. Anal. Methods. : , 2021.

Robinson, M.A., D. Stefanovski, Y.W. You, R.C. Boston, L.R. Soma Bayesian-based withdrawal estimates using pharmacokinetic parameters for two capsaicinoid-containing products administered to horses. J Vet Pharmacol Therap : , 2020.

Morgan, J., M.W. Ross, D.G. Levine, D. Stefanovski, Y.W. You, YW, M.A. Robinson, E.J. Davidson Effects of acepromazine and xylazine on subjective and objective assessments of forelimb lameness Equine Vet. J : , 2020.

Guan, F.Y., S. Fay, X.Q. Li, Y.W. You, M.A. Robinson Identification of exvivo catabolites of peptides with doping potential in equine plasma by HILIC-HRMS Drug Test Anal : , 2020.

You, Y.W, R.M. Proctor, E.D. Vasilko M.A. Robinson Doping control analysis of four JWH-250 metabolites in equine urine by LC-MS/MS Drug Test Anal 11: 649-658, 2019.

Guan, F.Y., Y.W. You, X.Q. Li, M.A. Robinson A comprehensive approach to detecting multitudinous bioactive peptides in equine plasma and urine using hydrophilic interaction liquid chromatography coupled to high resolution mass spectrometry Drug Test Anal 11: 1308-1325, 2019.

B.S. South China Agricultural University, 1991

M.S. Chinese Academy of Agricultural Sciences, 1997

PhD University of Wyoming, 2002

University of Delaware (2002 to 2004)
Postdoctoral Research Associate