Bioanalytical systems, Inc. is an international contract research company providing drug discovery and development services and analytical instruments. The Company operates in two segments: contract research services and research products. The contract research services segment provides research and development support on a contract basis to pharmaceutical companies. The research products segment provides liquid chromatography, electrochemical and physiological monitoring products to pharmaceutical companies, universities, government research centers, and medical research institutions. The Company supports the preclinical and clinical development needs of researchers and clinicians for small molecule and large biomolecule drug candidates. The contract research services segment provides screening and pharmacological testing, preclinical safety testing, formulation development, regulatory compliance and quality control testing.