Sihoun Hahn, MD, PhD is a professor of pediatrics and adjunct professor of medicine at the University of Washington and Children's Hospital as head of biochemical genetics program and the director of biochemical and molecular genetics laboratory. Dr. Hahn's research has focused on copper metabolism, population screening for Wilson's disease and mitochondrial disease. His work focused on developing a population screening method for Wilson's disease, a genetic disease in which the body cannot excrete copper properly leading to its accumulation in various organs including the liver and brain. Dr. Hahn here is focusing on developing a national screening program for every newborn by tandem mass spectrometry. Dr. Hahn serves as a member of medical advisory committee of the Wilson's Disease Association. Dr. Hahn is currently developing and validating clinical genetic test on mitochondrial disorders by high-throughput next generation sequencing technology. Other current projects in his lab focus on developing peptide finger printing analysis by tandem mass spectrometry for various metabolic and genetic disorders. Dr. Hahn hopes to improve clinical practice through integrated laboratory testing – true translational research. He remains a great believer in prevention: identifying illness and providing interventions to patients before symptoms appear is always preferable to treating developed disease. He is a member of advisory committee for WA State Newborn Screening.