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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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Quest Diagnostics - San Francisco Sutter Street - Employer Drug Testing Not Offered

450 Sutter Street,

Ste 2540

San Francisco, CA 94108

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0.34 mi away

Schedule Appointment 415-398-2410
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 Clay Street - Employer Drug Testing Not Offered

941 Clay St,

San Francisco, CA 94108

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0.39 mi away

Schedule Appointment 415-956-2543
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 2201 Post Street - Employer Drug Testing Not Offered

2201 Post St,

San Francisco, CA 94115

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1.97 mi away

Schedule Appointment 415-931-6492
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 15th Street

2198 15th St,

San Francisco, CA 94114

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2.42 mi away

Schedule Appointment 415-431-8723
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
Quest Diagnostics - San Francisco Valencia Street - Employer Drug Testing Not Offered

1640 Valencia St,

Ste 1B

San Francisco, CA 94110

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3.27 mi away

Schedule Appointment 415-648-4167
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
Quest Diagnostics - Oakland 9th St - Employer Drug Testing Not Offered

388 9Th St,

Ste 218A

Oakland, CA 94607

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6.96 mi away

Schedule Appointment 510-835-4190
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
Quest Diagnostics - 3300 Webster St - Employer Drug Testing Not Offered

3300 Webster St,

Ste 109

Oakland, CA 94609

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7.7 mi away

Schedule Appointment 510-251-0547
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
Quest Diagnostics - Alameda Whitehall Place

2111 Whitehall Place,

Suite D

Alameda, CA 94501

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8.13 mi away

Schedule Appointment 510-337-0506
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
Quest Diagnostics - Berkeley Regent - Employer Drug Testing Not Offered

2999 Regent Street,

Suite 100 & 102

Berkeley, CA 94705

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8.93 mi away

Schedule Appointment 510-849-3181
Monday: 7:00 am-4:30 pm
Tuesday: 7:00 am-4:30 pm
Wednesday: 7:00 am-4:30 pm
Thursday: 7:00 am-4:30 pm
Friday: 7:00 am-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Daly City Campus Drive

901 Campus Dr,

Ste 103

Daly City, CA 94015

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9.55 mi away

Schedule Appointment 650-758-1588
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
Quest Diagnostics - Mill Valley Miller Avenue - Employer Drug Testing Not Offered

447 Miller Ave,

Mill Valley, CA 94941

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10.09 mi away

Schedule Appointment 415-925-2800
Monday: 7:00 am-11:00 am , 12:00 pm-3:30 pm
Tuesday: 7:00 am-11:00 am , 12:00 pm-3:30 pm
Wednesday: 7:00 am-11:00 am , 12:00 pm-3:30 pm
Thursday: 7:00 am-11:00 am , 12:00 pm-3:30 pm
Friday: 7:00 am-11:00 am , 12:00 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - San Pablo Vale Rd- Employer Drug Testing Not Offered

2101 VALE RD,

STE 102

SAN PABLO, CA 94806

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11.77 mi away

Schedule Appointment 510-237-3528
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
Quest Diagnostics - Greenbrae South Eliseo

1000 S Eliseo Dr,

Ste 100

Greenbrae, CA 94904

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12.62 mi away

Schedule Appointment 415-299-6461
Monday: 7:00 am-11:00 am , 12:00 pm-3:30 pm
Tuesday: 7:00 am-11:00 am , 12:00 pm-3:30 pm
Wednesday: 7:00 am-11:00 am , 12:00 pm-3:30 pm
Thursday: 7:00 am-11:00 am , 12:00 pm-3:30 pm
Friday: 7:00 am-11:00 am , 12:00 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Larkspur Bon Air Road

5 Bon Air Rd,

Ste 119

Larkspur, CA 94939

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12.84 mi away

Schedule Appointment 415-886-6080
Monday: 7:00 am-4:30 pm
Tuesday: 7:00 am-4:30 pm
Wednesday: 7:00 am-4:30 pm
Thursday: 7:00 am-4:30 pm
Friday: 7:00 am-4:30 pm
Saturday: 7:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Millbrae El Camino Real

120 S El Camino Real,

Ste 5

Millbrae, CA 94030

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13.42 mi away

Schedule Appointment 650-651-0027
Monday: 7:30 am-12:00 pm , 1:00 pm-4:30 pm
Tuesday: 7:30 am-12:00 pm , 1:00 pm-4:30 pm
Wednesday: 7:30 am-12:00 pm , 1:00 pm-4:30 pm
Thursday: 7:30 am-12:00 pm , 1:00 pm-4:30 pm
Friday: 7:30 am-12:00 pm , 1:00 pm-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - San Rafael D Street - Employer Drug Testing Not Offered

711 D Street,

Suite 103

San Rafael, CA 94901

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14.21 mi away

Schedule Appointment 415-925-2720
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
Quest Diagnostics - San Leandro East 14th - Employer Drug Testing Not Offered

13847 E 14Th St,

Ste 111

San Leandro, CA 94578

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14.76 mi away

Schedule Appointment 510-357-5438
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-3:50 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
Quest Diagnostics - Lafayette Mt Diablo Boulevard - Employer Drug Testing Not Offered

3800 Mt Diablo Blvd,

Suite 104

Lafayette, CA 94549

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15.67 mi away

Schedule Appointment 925-283-4872
Monday: 7:30 am-12:00 pm , 1:00 pm-3:00 pm
Tuesday: 7:30 am-12:00 pm , 1:00 pm-3:00 pm
Wednesday: 7:30 am-12:00 pm , 1:00 pm-3:00 pm
Thursday: 7:30 am-12:00 pm , 1:00 pm-3:00 pm
Friday: 7:30 am-12:00 pm , 1:00 pm-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - San Mateo 2nd Ave

110 2Nd Ave,

San Mateo, CA 94401

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16.21 mi away

Schedule Appointment 650-344-8143
Monday: 7:00 am-11:00 am , 12:00 pm-4:00 pm
Tuesday: 7:00 am-11:00 am , 12:00 pm-4:00 pm
Wednesday: 7:00 am-11:00 am , 12:00 pm-4:00 pm
Thursday: 7:00 am-11:00 am , 12:00 pm-4:00 pm
Friday: 7:00 am-11:00 am , 12:00 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Inside San Rafael Safeway Store - Employer Drug Testing Not Offered

950 Las Gallinas Ave,

San Rafael, CA 94903

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16.89 mi away

Schedule Appointment 415-680-1042
Monday: 7:30 am-11:30 am , 12:30 pm-4:30 pm
Tuesday: 7:30 am-11:30 am , 12:30 pm-4:30 pm
Wednesday: 7:30 am-11:30 am , 12:30 pm-4:30 pm
Thursday: 7:30 am-11:30 am , 12:30 pm-4:30 pm
Friday: 7:30 am-11:30 am , 12:30 pm-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Foster City E Hillsdale Blvd

1241 East Hillsdale Blvd,

Ste 260

Foster City, CA 94404

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17.01 mi away

Schedule Appointment 650-212-7426
Monday: 7:00 am-11:00 am , 12:00 pm-4:00 pm
Tuesday: 7:00 am-11:00 am , 12:00 pm-4:00 pm
Wednesday: 7:00 am-11:00 am , 12:00 pm-4:00 pm
Thursday: 7:00 am-11:00 am , 12:00 pm-4:00 pm
Friday: 7:00 am-11:00 am , 12:00 pm-4:00 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Hercules Alfred Nobel

500 Alfred Nobel Drive,

Suite 115

Hercules, CA 94547

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17.03 mi away

Schedule Appointment 510-741-8946
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
Quest Diagnostics - Castro Valley Lake Chabot - Employer Drug Testing Not Offered

20400 Lake Chabot Rd,

Ste 101

Castro Valley, CA 94546

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17.98 mi away

Schedule Appointment 510-881-1570
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: Closed
Sunday: Closed
Quest Diagnostics - Hayward Southland Mall - Employer Drug Testing Not Offered

1 Southland Mall Dr,

Suite 718

Hayward, CA 94545

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18.58 mi away

Schedule Appointment 510-785-7075
Monday: 6:30 am-3:30 pm
Tuesday: 6:30 am-3:30 pm
Wednesday: 6:30 am-3:30 pm
Thursday: 6:30 am-3:30 pm
Friday: 6:30 am-3:30 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Inside Nave Dr Safeway Store

5720 Nave Dr,

Novato, CA 94949

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19.95 mi away

Schedule Appointment 628-682-5146
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
Quest Diagnostics - Pleasant Hill Gregory Lane

401 Gregory Ln,

Ste 146

Pleasant Hill, CA 94523

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20.51 mi away

Schedule Appointment 925-687-2514
Monday: 7:30 am-12:00 pm
Tuesday: 7:30 am-12:00 pm
Wednesday: 7:30 am-12:00 pm
Thursday: 7:30 am-12:00 pm
Friday: 7:30 am-12:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Walnut Creek La Cas Via

108 La Casa Via,

Ste 105

Walnut Creek, CA 94598

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20.72 mi away

Schedule Appointment 925-930-6897
Monday: 7:30 am-4:30 pm
Tuesday: 7:30 am-4:30 pm
Wednesday: 7:30 am-4:30 pm
Thursday: 7:30 am-4:30 pm
Friday: 7:30 am-4:30 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - San Carlos Laurel Street

1100 Laurel Street,

Suite F

San Carlos, CA 94070

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21.65 mi away

Schedule Appointment 650-593-9279
Monday: 7:00 am-11:00 am , 11:30 am-3:00 pm
Tuesday: 7:00 am-11:00 am , 11:30 am-3:00 pm
Wednesday: 7:00 am-11:00 am , 11:30 am-3:00 pm
Thursday: 7:00 am-11:00 am , 11:30 am-3:00 pm
Friday: 7:00 am-11:00 am , 11:30 am-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Inside San Ramon Valley Blvd Safeway Store - Employer Drug Testing Not Offered

2505 San Ramon Valley Blvd,

San Ramon, CA 94583

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22.52 mi away

Schedule Appointment 925-856-9215
Monday: 7:30 am-11:30 am , 12:30 pm-4:30 pm
Tuesday: 7:30 am-11:30 am , 12:30 pm-4:30 pm
Wednesday: 7:30 am-11:30 am , 12:30 pm-4:30 pm
Thursday: 7:30 am-11:30 am , 12:30 pm-4:30 pm
Friday: 7:30 am-11:30 am , 12:30 pm-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Benicia Southampton Rd

810 Southampton Rd,

Ste 109

Benicia, CA 94510

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22.8 mi away

Schedule Appointment 707-746-6360
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 - Concord Clayton Rd

4383 Clayton Rd,

Suite 20

Concord, CA 94521

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24.92 mi away

Schedule Appointment 831-212-2754
Monday: 7:30 am-4:30 pm
Tuesday: 7:30 am-4:30 pm
Wednesday: 7:30 am-4:30 pm
Thursday: 7:30 am-4:30 pm
Friday: 7:30 am-4:30 pm
Saturday: 8:00 am-12:00 pm
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.