Pharmaceutical Product Development (PPD) is on the hunt for newfangled drugs. One of the world's largest contract research organizations (CROs), PPD provides global research and development services to pharmaceutical, biotech, and medical device companies seeking regulatory approval for their products. The CRO offers a broad range of services, from toxicology testing in the earliest phases of drug research, to the management of large, multi-site clinical trials in which drug compounds are tested on human subjects. Its customers have included most of the world's top 50 pharma companies.