Our corporate headquarters are in New Jersey, located just outside New York City. CAP programs are aligned with international standards. Read more about our CLIA (Clinical Laboratory Improvement Amendments) licenses and CAP (College of American Pathologists) accreditation.
Make an appointment at a patient testing location.
We offer broad access to clinical testing services through our national network of laboratories in most major metropolitan areas as well as approximately 2,000 patient locations.
We also collaborate with many international diagnostic laboratories, hospitals and clinics to help improve human health around the world. Our products and services are used by customers in over 130 countries. 6 simple ways to prepare your child for a lab test. and operations in India, Ireland, and Mexico. Quest Diagnostics has headquarters in the U.S.