Bioanalytical Systems, Inc. operates as a pharmaceutical development company, which engages in the provision of drug discovery, development services, and analytical instruments. The firm operates through the following business segments: Contract Research Services and Research Products. The Contract Research Services segment provides screening and pharmacological testing, preclinical safety testing, formulation development, regulatory compliance, and quality control testing. The Research Products segment designs, develops, manufactures, and markets vivo sampling systems and accessories, physiology monitoring tools, liquid chromatography, and electrochemistry instruments platforms. The company was founded by Peter T. Kissinger in 1974 and is headquartered in West Lafayette, IN.