Tox Monitor Laboratories is a small privately held contract laboratory established in 1977, making the company one of the oldest and most trusted Acute Toxicology Laboratories in the United States. Originally incorporated by Michael A. Kukulinski, Robert F. Locke, and Thomas W Welsh, the company expanded in 1988 to perform FDA Preclinical studies. Our BSR Division operated out of Loyola University Stritch School of Medicine in nearby Maywood, Illinois. The laboratory conducted a variety of studies from 28 days to two year carcinogenicity studies.BSR was sold To PreLabs LLC in 2008 and Tox Monitor returned to their roots in Acute Toxicology and product safety testing. The Laboratory specializes in EPA/FIFRA submission studies for the registration of antimicrobial compounds and is normally able to complete and report within 6 weeks of study initiation. We are still located in Oak Park, Illinois and welcome inquiries into any aspect of In Vivo safety testing of your unique products.