Spotlight on Testing: Phosphatidylethanol — A Long-term Biomarker for Alcohol Exposure

Dr. Kamisha L. Johnson-Davis is the medical director of clinical toxicology at ARUP Laboratories and the director of the clinical chemistry fellowship program and an associate professor at the University of Utah. Dr. Johnson-Davis graduated with a bachelor’s degree in biochemistry from the University of California before receiving her doctorate degree in pharmacology at the University of Utah. She completed a fellowship at the Center for Human Toxicology and a clinical chemistry fellowship at the University of Utah. Dr. Johnson-Davis is certified in clinical chemistry and toxicological chemistry. Her research interests include assay development for drug testing by mass spectrometry and immunoassay, therapeutic drug monitoring for pediatric and adult patients, and drug testing in oral fluid.