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Quest Diagnostics

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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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US Facilities & Operations International Facilities & Operations

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Carbon Health - Civic Center (Preferred)

1390 Market St,

Ste 109

San Francisco, CA 94102

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0.44 mi away

415-404-3129
Monday: 9:00 am-7:00 pm
Tuesday: 9:00 am-7:00 pm
Wednesday: 9:00 am-7:00 pm
Thursday: 9:00 am-7:00 pm
Friday: 9:00 am-7:00 pm
Saturday: Closed
Sunday: Closed
Carbon Health - Market Street (Preferred)

1998 Market St,

San Francisco, CA 94102

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0.84 mi away

415-651-3558
Monday: 9:00 am-7:00 pm
Tuesday: 9:00 am-7:00 pm
Wednesday: 9:00 am-7:00 pm
Thursday: 9:00 am-7:00 pm
Friday: 9:00 am-7:00 pm
Saturday: 9:00 am-7:00 pm
Sunday: 9:00 am-7:00 pm
No Drugs Inc - San Fran (Preferred)

9 Silliman St,

Ste 6

San Francisco, CA 94134

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2.92 mi away

800-490-3784
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
Carbon Health - Inner Sunset (Preferred)

2131 Irving St,

San Francisco, CA 94122

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3.77 mi away

415-404-3165
Monday: 9:00 am-7:00 pm
Tuesday: 9:00 am-7:00 pm
Wednesday: 9:00 am-7:00 pm
Thursday: 9:00 am-7:00 pm
Friday: 9:00 am-7:00 pm
Saturday: 9:00 am-7:00 pm
Sunday: 9:00 am-7:00 pm
Carbon Health - Stonestown (Preferred)

3251 20Th Ave,

Ste 320

San Francisco, CA 94132

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4.7 mi away

415-404-3161
Monday: 9:00 am-7:00 pm
Tuesday: 9:00 am-7:00 pm
Wednesday: 9:00 am-7:00 pm
Thursday: 9:00 am-7:00 pm
Friday: 9:00 am-7:00 pm
Saturday: 9:00 am-7:00 pm
Sunday: 9:00 am-7:00 pm
Carbon Health - Alameda Landing (Preferred)

2690 Fifth St,

Ste B

Alameda, CA 94501

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6.95 mi away

510-808-4922
Monday: 10:00 am-4:00 pm
Tuesday: 10:00 am-4:00 pm
Wednesday: 10:00 am-4:00 pm
Thursday: 10:00 am-4:00 pm
Friday: 10:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Carbon Health - Alameda Bridgeside (Preferred)

2671 Blanding Ave,

Stes A & B

Alameda, CA 94501

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9.46 mi away

415-404-3124
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
Carbon Health - Albany (Preferred)

1080 Monroe St,

Suite 120

Albany, CA 94706

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9.75 mi away

510-606-9485
Monday: 10:00 am-4:00 pm
Tuesday: 10:00 am-4:00 pm
Wednesday: 10:00 am-4:00 pm
Thursday: 10:00 am-4:00 pm
Friday: 10:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Fastest Labs of Richmond (Preferred)

4261 Hilltop Dr,

Ste A

Richmond, CA 94803

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15.01 mi away

510-514-0090
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
ARCpoint Labs of San Rafael (Preferred)

4340 Redwood Hwy,

Ste A33

San Rafel, CA 94903

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16.58 mi away

415-475-4620
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
CheckPoint OTC (Preferred)

24326 MISSION BLVD,

STE 3

HAYWARD, CA 94544

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19.24 mi away

510-733-5707
Monday: 9:00 am-11:30 am , 1:00 pm-4:00 pm
Tuesday: 9:00 am-11:30 am , 1:00 pm-4:00 pm
Wednesday: 9:00 am-11:30 am , 1:00 pm-4:00 pm
Thursday: 9:00 am-11:30 am , 1:00 pm-4:00 pm
Friday: 9:00 am-11:30 am , 1:00 pm-4:00 pm
Saturday: Closed
Sunday: Closed
ExamOne-Concord (Preferred)

2121 N California Blvd,

Ste 150

Walnut Creek, CA 94596

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20.52 mi away

925-939-3655
Monday: Closed
Tuesday: 9:00 am-2:00 pm
Wednesday: 9:00 am-2:00 pm
Thursday: 9:00 am-2:00 pm
Friday: 9:00 am-2:00 pm
Saturday: Closed
Sunday: Closed
ARCpoint Labs of Martinez (Preferred)

3237 Alhambra Ave,

Martinez, CA 94553

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21.64 mi away

925-957-6870
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
No Drugs Inc - Martinez (Preferred)

839 Arnold Drive,

Ste 100

Martinez, CA 94553

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22.09 mi away

800-490-3784
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
Carbon Health - Martinez (Preferred)

1125 Arnold Dr,

Martinez, CA 94553

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22.35 mi away

949-396-1381
Monday: 10:00 am-2:00 pm
Tuesday: 10:00 am-2:00 pm
Wednesday: 10:00 am-2:00 pm
Thursday: 10:00 am-2:00 pm
Friday: 10:00 am-2:00 pm
Saturday: Closed
Sunday: Closed
Carbon Health - Novato (Preferred)

132 Vintage Oaks Way,

Ste F5

Novato, CA 94945

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23.26 mi away

415-539-3241
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: 9:00 am-12:00 pm
Sunday: 9:00 am-12:00 pm
C-DAT LLC (Preferred)

17 Tennesse Street,

Suite 142

Vallejo, CA 94590

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24.56 mi away

707-643-3894
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

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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.