Quest Diagnostics works across the healthcare ecosystem to create a healthier world, one life at a time. We provide diagnostic insights from the results of our laboratory testing to empower people, physicians, and organizations to take action to improve health outcomes. Derived from one of the world's largest databases of de-identifiable clinical lab results, our diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve healthcare management. In the right hands and with the right context, our diagnostic insights can inspire actions that transform lives and create a healthier world. The patients we serve annually comprise approximately one-third of the adult population of the United States, and over a three-year period, we serve approximately one-half of the adult population of the United States. We estimate that annually we serve approximately half of the physicians and half of the hospitals in the United States.