4340 Redwood Hwy,
Ste A33
San Rafel, CA 94903
Get Directions
Lab testing, laboratory and office locations around the world
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 and clinics to help improve human health around the world.
Looking for a facility or operation that is not a lab testing location?
US Facilities & Operations International Facilities & Operations
List
Map
29.81 mi away
Monday:
8:30 am-3:00 pm
Tuesday:
8:30 am-3:00 pm
Wednesday:
8:30 am-3:00 pm
Thursday:
8:30 am-3:00 pm
Friday:
8:30 am-3:00 pm
Saturday:
Closed
Sunday:
Closed
32.18 mi away
Monday:
7:30 am-3:00 pm
Tuesday:
7:30 am-3:00 pm
Wednesday:
7:30 am-3:00 pm
Thursday:
7:30 am-3:00 pm
Friday:
7:30 am-3:00 pm
Saturday:
Closed
Sunday:
Closed
36.79 mi away
Monday:
9:30 am-5:00 pm
Tuesday:
9:30 am-5:00 pm
Wednesday:
9:30 am-5:00 pm
Thursday:
9:30 am-5:00 pm
Friday:
9:30 am-5:00 pm
Saturday:
Closed
Sunday:
Closed
Medic - Fairfield (Preferred)
1335 Oliver Rd,
Fairfield, CA 94534
Get Directions37.04 mi away
Monday:
9:00 am-5:00 pm
Tuesday:
9:00 am-5:00 pm
Wednesday:
9:00 am-5:00 pm
Thursday:
9:00 am-5:00 pm
Friday:
9:00 am-5:00 pm
Saturday:
9:00 am-1:00 pm
Sunday:
Closed
37.63 mi away
Monday:
7:30 am-4:00 pm
Tuesday:
7:30 am-4:00 pm
Wednesday:
7:30 am-4:00 pm
Thursday:
7:30 am-4:00 pm
Friday:
7:30 am-4:00 pm
Saturday:
Closed
Sunday:
Closed
41.53 mi away
Monday:
8:00 am-4:00 pm
Tuesday:
8:00 am-4:00 pm
Wednesday:
8:00 am-4:00 pm
Thursday:
8:00 am-4:00 pm
Friday:
8:00 am-4:00 pm
Saturday:
Closed
Sunday:
Closed
ARCpoint Labs of Martinez (Preferred)
3237 Alhambra Ave,
Martinez, CA 94553
Get Directions42.31 mi away
Monday:
9:00 am-4:00 pm
Tuesday:
9:00 am-4:00 pm
Wednesday:
9:00 am-4:00 pm
Thursday:
9:00 am-4:00 pm
Friday:
9:00 am-4:00 pm
Saturday:
Closed
Sunday:
Closed
43.21 mi away
Monday:
8:00 am-4:30 pm
Tuesday:
8:00 am-4:30 pm
Wednesday:
8:00 am-4:30 pm
Thursday:
8:00 am-4:30 pm
Friday:
8:00 am-4:30 pm
Saturday:
Closed
Sunday:
Closed
47.07 mi away
Monday:
8:30 am-12:00 pm , 12:30 pm-3:30 pm
Tuesday:
8:30 am-12:00 pm , 12:30 pm-3:30 pm
Wednesday:
8:30 am-12:00 pm , 12:30 pm-3:30 pm
Thursday:
8:30 am-12:00 pm , 12:30 pm-3:30 pm
Friday:
8:30 am-12:00 pm , 12:30 pm-3:30 pm
Saturday:
Closed
Sunday:
Closed
47.96 mi away
Monday:
Vary
Tuesday:
Vary
Wednesday:
Vary
Thursday:
Vary
Friday:
Vary
Saturday:
Vary
Sunday:
Vary
47.96 mi away
Monday:
9:00 am-5:00 pm
Tuesday:
9:00 am-5:00 pm
Wednesday:
9:00 am-5:00 pm
Thursday:
9:00 am-5:00 pm
Friday:
9:00 am-5:00 pm
Saturday:
Closed
Sunday:
Closed
49.21 mi away
Monday:
8:00 am-4:30 pm
Tuesday:
8:00 am-4:30 pm
Wednesday:
8:00 am-4:30 pm
Thursday:
8:00 am-4:30 pm
Friday:
8:00 am-4:30 pm
Saturday:
Closed
Sunday:
Closed
Our focus on your safety
Our safety precautions help ensure your confidence and comfort while visiting our Patient Service Centers to get the testing you need, today and every day.
- Site map
- Privacy Notices
- Terms
- Contact us
- Language assistance / non-discrimination
- Asistencia de idiomas / Aviso de no discriminación
- 語言協助 / 不歧視通知
- Accessibility
-
Your Privacy Choices
Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services. Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services.
Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.