Abbott Laboratories is principally involved in the discovery, development, manufacture and sale of healthcare products and services. The Company's Pharmaceutical Products segment produces adult and pediatric pharmaceuticals sold primarily on the prescription or recommendation of physicians, while the Diagnostic Products segment produces diagnostic systems and tests for blood banks, hospitals, commercial laboratories, alternate care testing sites, and consumers. The Hospital Products segment offers drugs and drug delivery systems, perioperative and intensive care products, among others. Ross Products include adult and pediatric nutritionals, and the International Segment includes hospital, pharmaceutical, and adult and pediatric nutritional products marketed and primarily manufactured outside the United States.