IDEXX Laboratories, Inc. develops, designs, manufactures, and distributes products for veterinary, and food and water testing markets. It operates in three segments: Companion Animal Group (CAG), Water Quality Products (Water), and Production Animal Segment (PAS). The CAG segment provides point-of-care veterinary diagnostic products, such as instruments and consumables, and rapid assays; information products and services, and digital radiography systems for veterinarians; and veterinary pharmaceutical products. This segment also offers commercial veterinary reference laboratory and consulting services to veterinarians in the United States, Canada, Europe, Australia, Japan, and South Africa. The Water segment offers a range of products used in the detection of various microbiological analytes in water to government laboratories, water utilities, and private certified laboratories. The PAS segment provides diagnostic tests and related instrumentation that are used to detect diseases, and to monitor health status in production animals. This segment offers its products primarily to government laboratories, cattle, and poultry and swine producers. IDEXX Laboratories also provides products that test milk for antibiotic residues to dairy producers and processors, as well as to government and food-quality managers. In addition, the company sells point-of-care electrolytes and blood gas analyzers for use in human medical hospitals and clinics to measure electrolytes, blood gases, acid-base balance, glucose, and ionized calcium, as well as to calculate other parameters, such as bicarbonate and anion gap. It markets and sells its products directly, as well as through independent distributors and other resellers. The company was founded in 1983 and is headquartered in Westbrook, Maine.