Quest Diagnostics Locations Location search Location search Quest Diagnostics has headquarters in the U.S. and operations in India, Ireland, and Mexico. Our products and services are used by customers in over 130 countries. We also collaborate with many international diagnostic laboratories, hospitals ...
Preparing for a lab test and/or visiting a Patient Service Center My doctor has ordered a lab test for me, and does not collect samples in their office. How do I locate a Quest Diagnostics location near me? Do I need to make an appointment in order to be tested at a Quest Diagnosti...