Tosoh Bioscience, Inc., based in South San Francisco, CA is a U.S. subsidiary of Tosoh Corporation's Bioscience Division, headquartered in Tokyo, Japan. Established in the United States in 1989, Tosoh Bioscience has become known throughout the Americas for providing sophisticated diagnostic systems to doctor’s offices, hospitals, reference laboratories, and veterinary practices. Tosoh’s versatile analyzers include the AIA-360 for low volume testing and the AIA-900 for mid-high volume laboratories. All of Tosoh’s immunoassay analyzers utilize the same Unit Dose Test Cup reagent format, providing accurate results which are consistent and interchangeable between systems.