Best American Toxicology Testing Services We are a toxicology and regulatory consulting laboratory located in the heart of Southern California, which offers services tailored to meet the needs of its clients in the fields of pharmaceutical develoment and regulation, biotechnolgy, medical device development and registration, preclinical and biostatistics report writing, statistical analysis and risk assesment, R&D preparation, clinical data management, biocompatibility, dietary evaluation, cosmetics toxicology, and cellular and molecular research.