Abbott develops and manufactures a wide range of healthcare products, including treatments for HIV, synthetic thyroid hormone, anticonvulsant drugs, and drugs for arthritis. They also produce medical tests and diagnostic instruments used in hospitals, laboratories, and physician offices to diagnose and monitor diseases such as HIV, hepatitis, cancer, and heart failure. Abbott operates in over 130 countries and has a product manufacturing segment called Abbott Point-of-Care, which manufactures diagnostic products for blood analysis and provides cardiac assays to the emergency room.