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 …

Whether you are here for a physician-initiated test or a self-ordered lab test, we've made the process simple and convenient.

Find a Quest Diagnostics location nearby to complete sample collection for doctor-ordered or self-purchased lab tests.

Walk-In Lab sells routine blood tests online through LabCorp and Quest Diagnostics. Enter your zip code to find a LabCorp or Quest location near you.

Using our lab testing locator, enter your zip code and select a lab location that is convenient to you. On the day of your test, you will submit your specimens (blood and/or urine) at the lab center that you …

Feb 17, 2026 · How can I locate the nearest Quest Diagnostics patient service center fast? Start with a map search on your phone or desktop and use specific search terms such as “Quest Diagnostics …

Quest Diagnostics Locations Location search US Facilities & Operations Please use this page to locate non-testing facilities.

View, change or cancel an existing appointment. Shop questhealth.com for 100+ lab tests. Get the same quality Quest lab tests that doctors use - no doctor visit required for purchase.

Find hours, address, and contact information for top Quest Diagnostics patient service centers near you or schedule an at-home lab collection.

Find a Quest Diagnostics location in OH to complete sample collection for doctor-ordered or self-purchased lab tests.