Sonora Quest Laboratories/ Laboratory Sciences of Arizona
Hospitals and Health CareArizona, United States1001-5000 Employees
Sonora Quest Laboratories is a Phoenix-based joint venture between Banner Health and Quest Diagnostics that operates one of the nation’s largest integrated diagnostic laboratory systems. The organization offers a broad menu of tests, including routine, molecular, genetic/genomic, prescription drug monitoring, women’s health, and pathology services. It runs more than 70 patient service centers across Arizona and employs about 3,900 people, performing more than 100 million diagnostic tests each year. It is accredited by the College of American Pathologists. In 2026 it began offering consumer-facing testing options, such as the GLP-1 Progress Panel available through its My Lab ReQuest platform.