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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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Quest Diagnostics - Pasadena East Green

960 E Green St,

Ste 164

Pasadena, CA 91106

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0.42 mi away

Schedule Appointment 626-240-8923
Monday: 8:00 am-12:30 pm , 1:30 pm-4:00 pm
Tuesday: 8:00 am-12:30 pm , 1:30 pm-4:00 pm
Wednesday: 8:00 am-12:30 pm , 1:30 pm-4:00 pm
Thursday: 8:00 am-12:30 pm , 1:30 pm-4:00 pm
Friday: 8:00 am-12:30 pm , 1:30 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Pasadena North Madison - Employer Drug Testing Not Offered

65 N Madison Ave,

Ste 305

Pasadena, CA 91101

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0.81 mi away

Schedule Appointment 626-243-8764
Monday: 8:00 am-12:30 pm , 1:30 pm-4:00 pm
Tuesday: 8:00 am-12:30 pm , 1:30 pm-4:00 pm
Wednesday: 8:00 am-12:30 pm , 1:30 pm-4:00 pm
Thursday: 8:00 am-12:30 pm , 1:30 pm-4:00 pm
Friday: 8:00 am-12:30 pm , 1:30 pm-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Pasadena Bellefontaine - Employer Drug Testing Not Offered

50 Bellefontaine St,

Ste 101

Pasadena, CA 91105

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1.35 mi away

Schedule Appointment 323-376-6039
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: 7:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - San Gabriel West Las Tunas- Employer Drug Testing Not Offered

416 W LasTunas Dr,

Ste 204

San Gabriel, CA 91776

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2.82 mi away

Schedule Appointment 626-238-5666
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 - Arcadia West Duarte - Employer Drug Testing Not Offered

612 W Duarte Rd,

Ste 104

Arcadia, CA 91007

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4.12 mi away

Schedule Appointment 626-684-0102
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 - Alhambra S Garfield Ave - Employer Drug Testing Not Offered

1411 S Garfield Ave,

Ste 100

Alhambra, CA 91801

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4.21 mi away

Schedule Appointment 626-288-1750
Monday: 8:00 am-3:30 pm
Tuesday: 8:00 am-3:30 pm
Wednesday: 8:00 am-3:30 pm
Thursday: 8:00 am-3:30 pm
Friday: 8:00 am-3:30 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Arcadia West Huntington - Employer Drug Testing Not Offered

301 W Huntington Dr,

Ste 413

Arcadia, CA 91007

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4.52 mi away

Schedule Appointment 626-238-2709
Monday: 7:30 am-12:00 pm , 1:00 pm-4:00 pm
Tuesday: 7:30 am-12:00 pm , 1:00 pm-4:00 pm
Wednesday: 7:30 am-12:00 pm , 1:00 pm-4:00 pm
Thursday: 7:30 am-12:00 pm , 1:00 pm-4:00 pm
Friday: 7:30 am-12:00 pm , 1:00 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Glendale South Chevy Chase - Employer Drug Testing Not Offered

801 S Chevy Chase Dr,

Ste 50

Glendale, CA 91205

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5.94 mi away

Schedule Appointment 818-553-0550
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 - Glendale South Central - Employer Drug Testing Not Offered

800 S Central Ave,

Ste 205

Glendale, CA 91204

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6.85 mi away

Schedule Appointment 818-244-3673
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: 6:30 am-11:00 am
Sunday: Closed
Quest Diagnostics - Glendale North Verdugo - Employer Drug Testing Not Offered

3600 N Verdugo Rd,

Suite 303

Glendale, CA 91208

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6.86 mi away

Schedule Appointment 747-257-4962
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 - Glendale South Central

1500 S Central Ave,

Ste 326

Glendale, CA 91204

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6.89 mi away

Schedule Appointment 818-246-1298
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 - Montebello Via Campo

2527 Via Campo,

Montebello, CA 90640

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7.48 mi away

Schedule Appointment 323-246-2500
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: Closed
Sunday: Closed
Quest Diagnostics - Los Angeles East Cesar Chavez - Employer Drug Testing Not Offered

1632 E. Cesar Chavez Ave,

Los Angeles, CA 90033

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7.69 mi away

Schedule Appointment 213-200-8501
Monday: 6:00 am-3:00 pm
Tuesday: 6:00 am-3:00 pm
Wednesday: 6:00 am-3:00 pm
Thursday: 6:00 am-3:00 pm
Friday: 6:00 am-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Los Angeles East 3rd

420 E 3rd St,

Ste 802

Los Angeles, CA 90013

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8.75 mi away

Schedule Appointment 213-200-2868
Monday: 8:30 am-12:30 pm , 1:30 pm-4:30 pm
Tuesday: 8:30 am-12:30 pm , 1:30 pm-4:30 pm
Wednesday: 8:30 am-12:30 pm
Thursday: 8:30 am-12:30 pm , 1:30 pm-4:30 pm
Friday: 8:30 am-12:30 pm , 1:30 pm-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Los Angeles Beverly Blvd - Employer Drug Testing Not Offered

2105 Beverly Blvd,

Ste 105

Los Angeles, CA 90057

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9.01 mi away

Schedule Appointment 213-413-1274
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 - L.A. Good Sam PSC

1127 Wilshire Blvd,

Suite 203-204

Los Angeles, CA 90017

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9.3 mi away

Schedule Appointment 213-977-0164
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

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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.