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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 Diego Genesee - Employer Drug Testing Not Offered

9333 Genesee Ave,

Ste 180

San Diego, CA 92121

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2.4 mi away

Schedule Appointment 858-587-2702
Monday: 7:00 am-3:00 pm
Tuesday: 7:00 am-3:00 pm
Wednesday: 7:00 am-3:00 pm
Thursday: 7:00 am-3:00 pm
Friday: 7:00 am-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - SAN DIEGO-FOURTH AVE - Employer Drug Testing Not Offered

4060 4th Ave,

Ste 125

San Diego, CA 92103

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8.57 mi away

Schedule Appointment 619-291-4890
Monday: 8:00 am-5:00 pm
Tuesday: 8:00 am-5:00 pm
Wednesday: 8:00 am-5:00 pm
Thursday: 8:00 am-5:00 pm
Friday: 8:00 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - SAN DIEGO-FIRST AVE- Employer Drug Testing Not Offered

1855 First Avenue,

Ste 200-B

San Diego, CA 92101

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10.08 mi away

Schedule Appointment 619-236-0081
Monday: 9:00 am-1:00 pm , 1:30 pm-3:00 pm
Tuesday: 9:00 am-1:00 pm , 1:30 pm-2:30 pm
Wednesday: 9:00 am-1:00 pm , 1:30 pm-2:30 pm
Thursday: 9:00 am-1:00 pm , 1:30 pm-2:30 pm
Friday: 9:00 am-1:00 pm , 1:30 pm-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - La Mesa Fletcher Parkway - Employer Drug Testing Not Offered

8881 Fletcher Pkwy,

Ste 285

La Mesa, CA 91942

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13.76 mi away

Schedule Appointment 619-589-9211
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 - Encinitas El Camino Real - Employer Drug Testing Not Offered

477 N El Camino Real,

Ste B201

Encinitas, CA 92024

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13.99 mi away

Schedule Appointment 760-753-0281
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: Closed
Sunday: Closed
Quest Diagnostics - Santee Mission Gorge

9665 Mission Gorge Rd,

Ste B2

Santee, CA 92071

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14.01 mi away

Schedule Appointment 442-225-2784
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 - Poway Pomerado - Employer Drug Testing Not Offered

15725 Pomerado Rd,

Ste 208

Poway, CA 92064

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14.32 mi away

Schedule Appointment 619-318-3589
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
Quest Diagnostics - National City East 8th Street - Employer Drug Testing Not Offered

2340 E 8th St,

Ste F

National City, CA 91950

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14.83 mi away

Schedule Appointment 619-479-8463
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 - Chula Vista 4th Avenue - Employer Drug Testing Not Offered

480 4th Ave,

Ste 101

Chula Vista, CA 91910

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17.65 mi away

Schedule Appointment 619-425-4833
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - El Cajon Jamacha Road - Employer Drug Testing Not Offered

860 Jamacha Rd,

Ste 103

El Cajon, CA 92019

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17.71 mi away

Schedule Appointment 619-219-9080
Monday: 7:00 am-3:30 pm
Tuesday: 7:00 am-3:30 pm
Wednesday: 7:00 am-3:30 pm
Thursday: 7:00 am-3:30 pm
Friday: 7:00 am-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Chula Vista 3rd Avenue - Employer Drug Testing Not Offered

855 3rd Ave,

Ste 2250

Chula Vista, CA 91911

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18.6 mi away

Schedule Appointment 619-427-6722
Monday: 7:30 am-1:00 pm
Tuesday: 7:30 am-1:00 pm
Wednesday: 7:30 am-1:00 pm
Thursday: 7:30 am-1:00 pm
Friday: 7:30 am-1:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Chula Vista Telegraph Canyon - Employer Drug Testing Not Offered

563 Telegraph Canyon Rd,

Chula Vista, CA 91910

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19.53 mi away

Schedule Appointment 619-397-0294
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 - Chula Vista Kuhn Drive - Employer Drug Testing Not Offered

841 Kuhn Dr,

Ste 101

Chula Vista, CA 91914

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20.49 mi away

Schedule Appointment 619-482-9372
Monday: 7:00 am-11:00 am
Tuesday: 7:00 am-11:00 am
Wednesday: 7:00 am-11:00 am
Thursday: 7:00 am-11:00 am
Friday: 7:00 am-11:00 am
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Escondido Valley Parkway

488 E Valley Pkwy,

Suite 314

Escondido, CA 92025

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20.83 mi away

Schedule Appointment 760-317-8980
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 - Vista Sycamore - Employer Drug Testing Not Offered

902 Sycamore Ave,

Ste 201

Vista, CA 92081

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21.19 mi away

Schedule Appointment 442-204-2565
Monday: 7:30 am-11:30 am
Tuesday: 7:30 am-11:30 am
Wednesday: 7:30 am-11:30 am
Thursday: 7:30 am-11:30 am
Friday: 7:30 am-11:30 am
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Oceanside Vista - Employer Drug Testing Not Offered

3601 Vista Way,

Ste 104

Oceanside, CA 92056

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22.81 mi away

Schedule Appointment 760-722-7148
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

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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.