450 Sutter Street,
Ste 2540
San Francisco, CA 94108
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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.
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0.92 mi away
Monday:
8:00 am-12:00 pm , 1:00 pm-4:00 pm
Tuesday:
8:00 am-12:00 pm , 1:00 pm-4:00 pm
Wednesday:
8:00 am-12:00 pm , 1:00 pm-4:00 pm
Thursday:
8:00 am-12:00 pm , 1:00 pm-4:00 pm
Friday:
8:00 am-12:00 pm , 1:00 pm-4:00 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - San Francisco 2201 Post Street - Employer Drug Testing Not Offered
2201 Post St,
San Francisco, CA 94115
Get Directions1.05 mi away
Monday:
8:00 am-12:00 pm , 1:00 pm-4:30 pm
Tuesday:
8:00 am-12:00 pm , 1:00 pm-4:30 pm
Wednesday:
8:00 am-12:00 pm , 1:00 pm-4:30 pm
Thursday:
8:00 am-12:00 pm , 1:00 pm-4:30 pm
Friday:
8:00 am-12:00 pm , 1:00 pm-4:30 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - San Francisco Clay Street - Employer Drug Testing Not Offered
941 Clay St,
San Francisco, CA 94108
Get Directions1.16 mi away
Monday:
8:00 am-12:30 pm , 1:00 pm-3:00 pm
Tuesday:
8:00 am-12:30 pm , 1:00 pm-3:00 pm
Wednesday:
8:00 am-12:30 pm , 1:00 pm-3:00 pm
Thursday:
8:00 am-12:30 pm , 1:00 pm-3:00 pm
Friday:
8:00 am-12:30 pm , 1:00 pm-3:00 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - San Francisco 15th Street
2198 15th St,
San Francisco, CA 94114
Get Directions1.19 mi away
Monday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Tuesday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Wednesday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Thursday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Friday:
8:00 am-12:00 pm , 12:30 pm-4:00 pm
Saturday:
Closed
Sunday:
Closed
2.3 mi away
Monday:
7:00 am-11:30 am , 12:30 pm-4:00 pm
Tuesday:
7:00 am-11:30 am , 12:30 pm-4:00 pm
Wednesday:
7:00 am-11:30 am , 12:30 pm-4:00 pm
Thursday:
7:00 am-11:30 am , 12:30 pm-4:00 pm
Friday:
7:00 am-11:30 am , 12:30 pm-4:00 pm
Saturday:
Closed
Sunday:
Closed
7.99 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:
8:00 am-12:00 pm
Sunday:
Closed
8.44 mi away
Monday:
7:00 am-4:00 pm
Tuesday:
7:00 am-4:00 pm
Wednesday:
7:00 am-4:00 pm
Thursday:
7:00 am-4:00 pm
Friday:
7:00 am-4:00 pm
Saturday:
7:30 am-11:30 am
Sunday:
Closed
8.83 mi away
Monday:
6:30 am-5:00 pm
Tuesday:
6:30 am-5:00 pm
Wednesday:
6:30 am-5:00 pm
Thursday:
6:30 am-5:00 pm
Friday:
6:30 am-5:00 pm
Saturday:
8:00 am-12:00 pm
Sunday:
Closed
8.87 mi away
Monday:
7:30 am-11:30 am , 12:30 pm-4:00 pm
Tuesday:
7:30 am-11:30 am , 12:30 pm-4:00 pm
Wednesday:
7:30 am-11:30 am , 12:30 pm-4:00 pm
Thursday:
7:30 am-11:30 am , 12:30 pm-4:00 pm
Friday:
7:30 am-11:30 am , 12:30 pm-4:00 pm
Saturday:
Closed
Sunday:
Closed
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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.
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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. © 2025 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.