Sonora

Sonora Quest Laboratories is the largest integrated laboratory system in Arizona and a leader in diagnostic information services. A joint venture between Quest Diagnostics and Banner Health, the company offers a comprehensive menu of diagnostic testing, including clinical trials support, pathology, and direct-to-consumer testing. It operates a network of more than 75 patient service centers and provides services to hospitals, physicians, and health systems across the Southwest. The company is recognized for its high-volume testing capabilities and its role in supporting clinical research through specialized laboratory services.