Workplace Drug Testing 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...

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 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 towards ISO 17025 compliance. Dr Kleinman is the Chief of Toxicology for the Hamilton County Coroner in Ohio. Dr Kleinman has expertise in pharmacology, pharmacokinetics, impaired driving, sexual assault and blood alcohol interpretation. He offers consultation and education on interpreting laboratory results, chain of custody, workplace drug testing; and if appropriate, participates in d...