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Marc A. LeBeau, PhD, F-ABFT

Marc A. LeBeau, PhD, F-ABFT

Senior Scientist Scientific Analysis Section

Marc A. LeBeau, PhD, is the Senior Scientist of the Scientific Analysis Section of the FBI Laboratory. He has worked as a Forensic Chemist and Toxicologist for the FBI since 1994 and has testified as an expert in federal, state, and county courts throughout the United States. From 2000 to 2011, Dr. LeBeau served as the Chemistry Unit Chief for the FBI Laboratory. He was employed in the St. Louis County Medical Examiner’s Office, before beginning his career with the FBI. 


Dr. LeBeau holds a Bachelor’s degree in Chemistry and Criminal Justice from Central Missouri State University and a Master of Science degree in Forensic Science from the University of New Haven. In 2005, he received his Doctorate in toxicology from the University of Maryland – Baltimore. 


Dr. LeBeau has co-authored numerous peer-reviewed papers in scientific journals, as well as book chapters and abstracts.  He has provided training to thousands of law enforcement officers, forensic scientists, attorneys, medical professionals, and rape crisis counselors throughout the world.  Additionally, in 2001, he co-edited Drug-Facilitated Sexual Assault: A Forensic Handbook.  


As a Fellow of the American Board of Forensic Toxicology (ABFT), Dr. LeBeau is active in numerous scientific organizations.  He has been a member of the Society of Forensic Toxicologists (SOFT) since 1995. From 2000-2010, he served as Chairperson of the Drug-Facilitated Sexual Assault Committee and is a Past President of SOFT.  Additionally, Dr. LeBeau serves as the Treasurer of The International Association of Forensic Toxicologists (TIAFT) and sits on the Systematic Toxicological Analysis Committee within TIAFT.  He is a Fellow of the American Academy of Forensic Sciences (AAFS) and a member of the American Society of Crime Laboratory Directors (ASCLD).  He also serves on the National Commission on Forensic Science.


Dr. LeBeau has served as the chairman of the Scientific Working Group on the Forensic Analysis of Chemical Terrorism (SWGFACT) and co-chair to the Scientific Working Group on the Forensic Analysis on Chemical, Biological, Radiological, and Nuclear Terrorism (SWGCBRN). He is currently a subcommittee chair of the Scientific Working Group for Forensic Toxicology (SWGTOX).


Dr. LeBeau is on the editorial board of a number of scientific journals including the Journal of Analytical Toxicology and Forensic Toxicology.  He currently is an Assistant Editor for Forensic Science International and has served as Guest Editor to the Journal of Analytical Toxicology, the Journal of Chromatography B, Forensic Science International, and Forensic Science Review


Dr. LeBeau is an American Society of Crime Laboratory Directors - Laboratory Accreditation Board (ASCLD-LAB) assessor in the areas of drug chemistry and forensic toxicology and serves on the ASLCD-LAB Toxicology Proficiency Review Committee.  He also serves as an assessor for ABFT.


In 2004, Dr. LeBeau won the FBI Director’s Award for Outstanding Scientific Advancement and in 2008 he was the recipient of the End Violence Against Women (EVAW) International Visionary Award.

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