Margaret M. Gedde

Margaret M. Gedde, MD, PhD, DABPath is a forensic toxicology expert specializing in cannabinoid pharmacokinetics and marijuana driving impairment. With a career encompassing clinical pathology, cannabinoid medicine, and forensic toxicology, she brings a multifaceted perspective to her litigation work. Her work centers on investigating forensic toxicology test results, assessing cannabinoid pharmacokinetics, and evaluating whether marijuana impairment influenced driving capabilities.

Dr. Gedde has been retained in numerous expert witness and consulting engagements across the United States, involving criminal, civil, employment, parental, regulatory, and patent cases. Her MD from Stanford University School of Medicine and PhD in Biophysical Chemistry, along with her Board Certification in Clinical Pathology, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving THC impairment and forensic toxicology testing.