Quest Diagnostics Inc.

Quest Diagnostics Inc. is a leading independent provider of diagnostic testing, information, and services in the United States. The company generates the majority of its revenue from clinical testing, anatomic pathology, esoteric testing, and substance abuse testing, conducted through a national network of approximately 2,300 patient service centers, as well as doctors' offices and hospitals. It also operates a diagnostic solutions segment offering clinical trials testing, risk-assessment services, and information technology solutions to support healthcare providers. Quest Diagnostics empowers individuals, physicians, and organizations with diagnostic insights derived from one of the world's largest databases of de-identified clinical lab results, enabling disease identification, treatment, healthy behaviors, and improved healthcare management. The company serves one in three adult Americans and half of U.S. physicians and hospitals annually, while partnering through joint ventures like Sonora Quest Laboratories and Diagnostic Lab of Michigan for regional laboratory services and hospital lab management. Innovations include advanced tests such as Quest Flow Cytometry MRD for Myeloma and Haystack MRD for cancer monitoring. Founded in 1996 and headquartered in Secaucus, New Jersey, Quest Diagnostics plays a vital role in the diagnostics and research industry within the healthcare sector.