About Dr. William Closson

William J. Closson, Ph.D.has been involved in laboratory testing and forensic toxicology since 1971. He has consulted for the National Aeronautic and Space Administration (NASA) and the Substance Abuse and Mental Health Services Administration (SAMHSA) in the field of Forensic Toxicology. Dr. Closson is certified by the American Board of Forensic Examiners and has been a Clinical Laboratory Director since 1987. He is Certified by the New York State Department of Health as a Forensic Toxicologist and Blood Alcohol Analyst and has been qualified as an expert in the field of Forensic Toxicology at more than 400 trials.