Dr. He Sarina Yang is currently an Assistant Professor at the Department of Pathology and Laboratory Medicine at Weill Cornell Medicine, and serves as the Assistant Director of the Central Laboratory and Director of Toxicology Laboratory. Dr. Yang received her Bachelor of Medicine degree from Peking University Health Science Center and PhD in Neuroscience from Northwestern University. She was then trained as a Clinical Chemistry/Toxicology fellow at University of California, San Francisco. After training, she worked as a Scientific Director of Clinical Toxicology and Special Chemistry at Quest Diagnostics Nichols Institute of Valencia for over three years. Dr. Yang is certified in both Clinical Chemistry and Toxicological Chemistry by the American Board of Clinical Chemistry.