About

Quest Diagnostics empowers people to take action to improve health outcomes. Derived from the world's largest database of clinical lab results, Quest's diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors, and improve health care management. Quest Diagnostics annually serves one in three adult Americans and half the physicians and hospitals in the United States, and our nearly 50,000 employees understand that, in the right hands and with the right context, our diagnostic insights can inspire actions that transform lives.