Robert H. Poppenga, DVM, PhD, DABVT
Professor of Clinical Veterinary Toxicology and Section Head, Toxicology Laboratory at the California Animal Health and Food Safety Laboratory (CAHFS), School of Veterinary Medicine, University of California at Davis
Dr. Robert Poppenga is Professor of Clinical Veterinary Toxicology and Section Head, Toxicology Laboratory at the California Animal Health and Food Safety Laboratory (CAHFS), School of Veterinary Medicine, University of California at Davis. He has been at UCD since 2004.
He received his DVM and PhD degrees from the University of Illinois (Go Illini!). He is board-certified by the American Board of Veterinary Toxicology and has served that organization in a number of roles including President. He has almost 30 years of experience as a diagnostic veterinary toxicologist including previous faculty and diagnostic laboratory positions at Michigan State University and the University of Pennsylvania. He is author or co-author on over 150 scientific manuscripts and textbook chapters.
He is active in a number of professional organizations including the American Association of Veterinary Laboratory Diagnosticians (former Executive Board member), the American Veterinary Medical Association (former member of the Committee on Environmental Issues), the American Association of Veterinary and Comparative Toxicology, the Society of Environmental Toxicology and Chemistry, and the Society of Toxicology.
The Toxicology Laboratory at CAHFS is one of the busiest of its kind in the world and offers comprehensive diagnostic toxicology testing. His research interests include diagnostic veterinary toxicology, wildlife toxicology, and development of biomarkers for chemical exposure. He teaches veterinary toxicology to veterinary students at the School of Veterinary Medicine and advises Residents in diagnostic veterinary toxicology at CAHFS.
Studies, Articles and Answers
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A: You mention hormones being active at parts per billion concentrations. So, what I think that you are asking is - if hormones are active at parts per billion and glyphosate is present at higher concentrations (i.e., parts per million) why isn’t glyphosate causing problems? Perhaps the best answer is that the activity (either a pharmacologic action or a toxic action) of chemicals (either a naturally occurring chemical such as a hormone [yes hormones are chemicals] or man-made chemicals [such as glyphosate]) varies considerably between chemicals and is dependent on how much of a chemical rea [...]Glyphosate