Sarah Urfer, M.S., D-ABFT-FT


Laboratory Director

Sarah received her B.A. in Biochemistry, with a minor in Chemistry, from the University of Colorado Boulder in 2005 where she graduated with honors. Sarah received her M.S. in Forensic Science from the University of Illinois Chicago on 2006. After the completion of her M.S. Sarah was hired by ChemaTox Laboratory, Inc. where she became the Laboratory Director. At ChemaTox Lab Sarah specializes in forensic and clinical toxicology analysis and interpretation for prosecution, defense, and civil attorneys. Sarah is responsible for expert testimony in forensic toxicology, continuing education of analysts, method development, and overseeing the QA/QC program.

Sarah was invited to give expert testimony for Colorado Senate Committees regarding the proposed DUID THC per se bills introduced in Colorado in 2011 and 2012. Sarah frequently presents on various topics in forensic toxicology but has particular interest in zolpidem, and THC driving cases. Sarah has published on the topic of THC DUID testing and cases in Colorado. Sarah is a member of a number of forensic science professional organizations including the Society of Forensic Toxicologists (SOFT), The American Academy of Forensic Sciences (AAFS), The International Association of Forensic Toxicologists (TIAFT), and National Association of Medical Examiners (NAME). Sarah is the chair of the SOFT Young Forensic Toxicologists (YFT) committee, and a member of the National Safety Council (Alcohol, Drugs and Impairment Division).

C.V. (2024-03-14)Testimony List (2024-01-16)