Retrograde Extrapolation Expert Witnesses

Pelham, Alabama

Toxicology, Forensic Science - Dram shop, retrograde extrapolation, workplace drug testing, wrongful death, insurance, child custody, DUI and DUID, Postmortem toxicology, forensic toxicology, toxic tort and exposures, medical malpractice, hair testing, drug facilitated sexual assault, alcohol, drugs, oral fluid

Dr. Curt E. Harper is a nationally recognized Forensic Toxicologist with over 17 years of experience specializing in forensic toxicology, drug and alcohol impairment, DUI/D cases, and toxicological interpretation. Since 2012, he has served as the Chief Toxicologist for the Alabama Department of Forensic Sciences (ADFS), overseeing laboratory operations, forensic method development, quality assurance programs, and expert case reviews. Dr. Harper has testified in over 300 criminal and civil cases in Alabama and surrounding states, providing expert opinions on alcohol and drug impairment, retrograde extrapolation, forensic toxicology in postmortem cases, and other specialized areas. Dr. Harper’s scientific expertise, extensive courtroom experience, and ability to explain complex toxicology concepts make him an asset in both criminal and civil litigation. He holds a Ph.D. in Pharmacology and Toxicology and a Master of Science in Forensic Science (MSFS) from the University of Alabama at...

Jacksonville, Florida

Pharmacology- Clinical, Toxicology - DUI, Medication Adverse Effects, Overdose, Personal Injury, Medical Malpractice, Toxic Exposure, Medication Errors, Adverse Drug Reactions, Lead, Mold, Pesticides, Wrongful Death, Retrograde Extrapolation, Alcohol, Drugs of Abuse, Environmental Exposure, Postmortem Toxicology, Forensic Toxicology, Litigation Support, Public Health

Dr. Aaron Hilliard obtained his Doctor of Philosophy degree in Pharmacology/Toxicology from Meharry Medical College. After completing his Ph.D., he continued his research in Pharmacology and Forensic Toxicology at the Johns Hopkins School of Public Health, Division of Toxicological Sciences. Dr. Hilliard has served at the Florida Department of Health and held faculty appointments at the University of Florida. He is currently a tenured Associate Professor at Florida A&M University in the College of Pharmacy. He has authored several peer-reviewed publications related to pharmacology, toxicology, and the environmental impact of chemicals. Dr. Hilliard also brings 25 years of experience providing deposition and trial testimony in Pharmacology and Forensic Toxicology for both Plaintiff and Defense in Federal, State, Criminal, and Civil cases. Dr. Hilliard is a highly qualified expert in toxicology and pharmacology, offering a deep scientific foundation and over 25 years of applied exper...

Peachtree City, Georgia

Toxicology, Dram Shop & Alcohol Services - Drug Impairment, Alcohol Intoxication, Retrograde Extrapolation, Widmark Equation, Alcohol Calculations, Sobriety Testing, DUI Accident, DWI Crash, Drug Recognition Expert, Forensic Toxicology, Marijuana Impairment, Cannabis THC, Drug Facilitated Crime, Server Training, Dram Shop, Serum Alcohol, Hospital BAC, SFST, Human Performance

Matthew Myers, MS, MPA, is a nationally recognized expert witness and consultant in drug- and alcohol-related human performance impairment. With over 20 years of investigative experience and advanced clinical toxicology education, Matt brings a unique interdisciplinary perspective to civil litigation, combining scientific expertise and practical experience. Areas of Expertise Matt’s consulting practice focuses on civil matters, including impaired driving crashes, dram shop liability, alcohol service, workplace impairment, and other related areas. His services include case review, toxicology interpretation, behavioral analysis, alcohol calculations, procedure evaluation, and assessment of evidentiary sufficiency against accepted standards. His background in pharmacology and toxicology, along with practical experience evaluating impaired individuals, allows him to explain both the mechanisms of drug and alcohol effects and describe their real-world impact from personal observations....

Georgia

Pharmacology- Clinical, Toxicology - DUI, Medication Adverse Effects, Overdose, Personal Injury, Medical Malpractice, Toxic Exposure, Medication Errors, Adverse Drug Reactions, Lead, Mold, Pesticides, Wrongful Death, Retrograde Extrapolation, Alcohol, Drugs of Abuse, Environmental Exposure, Postmortem Toxicology, Forensic Toxicology, Litigation Support, Public Health

Dr. Aaron Hilliard obtained his Doctor of Philosophy degree in Pharmacology/Toxicology from Meharry Medical College. After completing his Ph.D., he continued his research in Pharmacology and Forensic Toxicology at the Johns Hopkins School of Public Health, Division of Toxicological Sciences. Dr. Hilliard has served at the Florida Department of Health and held faculty appointments at the University of Florida. He is currently a tenured Associate Professor at Florida A&M University in the College of Pharmacy. He has authored several peer-reviewed publications related to pharmacology, toxicology, and the environmental impact of chemicals. Dr. Hilliard also brings 25 years of experience providing deposition and trial testimony in Pharmacology and Forensic Toxicology for both Plaintiff and Defense in Federal, State, Criminal, and Civil cases. Dr. Hilliard is a highly qualified expert in toxicology and pharmacology, offering a deep scientific foundation and over 25 years of applied exper...

Wilmington, North Carolina

Forensic Science, Toxicology - Controlled substances, DWI, DUI, retrograde extrapolation, driving while impaired, alcohol, drunk driving, cannabis, THC, marijuana, CBD, hemp, quality assurance, ISO 17025, laboratory management, laboratory accreditation, dram shop, back extrapolation, SFST, DRE

Bethany has worked in the forensic science industry since 2005. She provides expert witness testimony and consultation for criminal and civil matters involving, but not limited to, DUI, seized drugs, cannabis, forensic testing practices, laboratory management, quality assurance standards, and reliability of testing methods. Early in her career, she had the opportunity to open a new regional forensic science laboratory in southeastern NC. She began an 11 year journey and gained a career’s worth of experience as a laboratory director, quality assurance manager, laboratory scientist, grant writer and manager. She has written and reviewed hundreds of administrative and technical policies, procedures, and training programs, and has analyzed and provided final review of thousands of biological and seized drug samples. She is a lead and technical assessor for ISO 17025:2017 and performs assessments in the areas of quality management, toxicology, and seized drugs testing for ANAB and A...

Cincinnati, Ohio

Forensic Science, Toxicology - DUI, toxicology, drugs, alcohol, insurance defense, retrograde extrapolation, impaired driving, DWI, postmortem, OVI, crash, sexual assault, forensics, dram shop, breath testing, prescription medicine, injury vehicle, workplace drug testing, drug related death, accident

Dr Samuel Kleinman is a double board certified forensic toxicologist; he is a Fellow of the American Board of Forensic Toxicology and a Toxicological Chemist certified by the National Registry of Certified Chemists. Dr Kleinman is currently the Chief of Toxicology for the Hamilton County Coroner in Ohio. He specializes in postmortem and impaired driving forensic toxicology. Previously, Dr Kleinman served as both the Deputy Bureau Chief and the Bureau Chief for the central forensic toxicology lab for the state of New Mexico. In this role he participated in more than 40 trials including state district court as well as federal court in New Mexico. He is an expert in laboratory accreditation, method development, validation, and piloted the transition of the New Mexico lab to a successful ISO 17025 AR3125 inspection. Dr Kleinman has expertise in pharmacology, pharmacokinetics, impaired driving, sexual assault and blood alcohol interpretation. He offers consultation and education on int...