Quest Diagnostics

Performance

About Quest Diagnostics

Quest Diagnostics is a leading medical diagnostics company that provides a broad range of laboratory testing services to patients, healthcare providers, and life sciences organizations. It operates a global network of diagnostic laboratories and offers test menus spanning clinical chemistry, molecular diagnostics, pathology, and genomic testing to support disease detection, monitoring, and treatment decisions. Headquartered in Secaucus, New Jersey, Quest serves the United States and international markets, with patient results accessible through digital platforms.