Dr. Presley graduated from the University of Southern Mississippi. He is a fellow of the American Board of Forensic Toxicology and a member of the Society of Forensic Toxicologists. He serves as a discipline director of forensic toxicology at Labcorp.

Dr Collins is a fellow of the American Board of Forensic Toxicology and holds certification as a high-complexity laboratory director (HCLD) from the American Board of Bioanalysis. She earned her PhD from Northwestern University and a Public Health Certificate in Core Concepts (PHCert-CC) from the University of Minnesota. She is currently a laboratory director at MedTox Laboratories, a member of the Labcorp Specialty Testing Group. She joined MedTox in 1994.

Mr Janis earned undergraduate degrees in biochemistry and chemistry at Virginia Tech and an MS in toxicology at University of North Carolina. He has 2 decades of experience developing techniques for the analysis of pharmaceuticals and drugs of abuse. Current interests include high-throughput mass spectrometry screening techniques, as well as the identification and analysis of new and emerging drugs of abuse. He is a member of the American Society for Mass Spectrometry and the Society for Forensic Toxicologists.

Publications