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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 - Simi Valley Sycamore

2876 Sycamore Dr,

Ste 200

Simi Valley, CA 93065

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1.51 mi away

Schedule Appointment 805-577-5953
Monday: 6:30 am-4:00 pm
Tuesday: 6:30 am-4:00 pm
Wednesday: 6:30 am-4:00 pm
Thursday: 6:30 am-4:00 pm
Friday: 6:30 am-4:00 pm
Saturday: 8:30 am-12:30 pm
Sunday: Closed
Quest Diagnostics - Simi Valley Macaw - Employer Drug Testing Not Offered

135 Macaw Ln,

Suite 100

Simi Valley, CA 93065

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2.01 mi away

Schedule Appointment 805-520-6045
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
Quest Diagnostics - West Hills Medical Center Dr - Employer Drug Testing Not Offered

7345 Medical Center Dr,

Ste 500

West Hills, CA 91307

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9.2 mi away

Schedule Appointment 747-249-4935
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 - Thousand Oaks Rolling Oaks Dr

77 Rolling Oaks Dr,

Suite 120

Thousand Oaks, CA 91361

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9.2 mi away

Schedule Appointment 805-497-8149
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: 7:30 am-11:30 am
Sunday: Closed
Quest Diagnostics - Agoura Hills Canwood - Employer Drug Testing Not Offered

29525 Canwood St,

Ste 101

Agoura Hills, CA 91301

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9.3 mi away

Schedule Appointment 818-661-1969
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
Quest Diagnostics - West Hills Medical Center - Employer Drug Testing Not Offered

7230 Medical Center Dr,

Ste 605

West Hills, CA 91307

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9.37 mi away

Schedule Appointment 818-704-9052
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 - Westlake Village La Venta - Employer Drug Testing Not Offered

1220 La Venta Dr,

Ste 201

Westlake Village, CA 91361

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9.64 mi away

Schedule Appointment 805-373-6933
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 - Newbury Park 1000 Newbury Road - Employer Drug Testing Not Offered

1000 Newbury Rd,

Suite 125

Newbury Park, CA 91320

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9.88 mi away

Schedule Appointment 805-480-0571
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 - Camarillo Santa Rosa - Employer Drug Testing Not Offered

5800 Santa Rosa Rd,

Ste 105

Camarillo, CA 93012

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12.14 mi away

Schedule Appointment 424-234-0001
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 - Northridge Roscoe Boulevard

18350 Roscoe Blvd,

Ste 603

Northridge, CA 91325

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13.26 mi away

Schedule Appointment 747-232-4639
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Camarillo Las Posas - Employer Drug Testing Not Offered

3801 Las Posas Rd,

Ste 208

Camarillo, CA 93010

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13.48 mi away

Schedule Appointment 805-603-8437
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: 7:30 am-11:30 am
Sunday: Closed
Pacific Medical Services - 3rd Party Phlebotomy Service

5620 Wilbur Ave,

Ste 211

Tarzana, CA 91356

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14.22 mi away

888-812-5663
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 - Santa Clarita Town Center Drive - Employer Drug Testing Not Offered

24305 Town Center Dr,

Ste 140

Santa Clarita, CA 91355

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14.53 mi away

Schedule Appointment 661-259-7520
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: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Tarzana 18370 Suite 407

18370 Burbank Blvd,

Ste 407

Tarzana, CA 91356

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14.79 mi away

Schedule Appointment 818-345-0431
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 - Tarzana Burbank - Employer Drug Testing Not Offered

18370 Burbank Blvd,

Ste 108

Tarzana, CA 91356

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14.81 mi away

Schedule Appointment 818-345-0431
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 - Tarzana Etiwanda - Employer Drug Testing Not Offered

5525 Etiwanda Ave,

Ste 307

Tarzana, CA 91356

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14.88 mi away

Schedule Appointment 818-609-0985
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
Quest Diagnostics - Camarillo Paseo Camarillo

500 Paseo Camarillo,

Suite 103

Camarillo, CA 93010

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16.04 mi away

Schedule Appointment 820-426-1931
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 - Mission Hills Rinaldi - Employer Drug Testing Not Offered

14901 Rinaldi St,

Ste 314

Mission Hills, CA 91345

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16.62 mi away

Schedule Appointment 747-232-0934
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
Pacific Medical Services Encino - 3rd Party Phlebotomy Service

16661 Ventura Blvd,

Ste 411

Encino, CA 91436

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16.89 mi away

888-812-5663
Monday: 8:00 am-4:00 pm
Tuesday: 8:00 am-4:00 pm
Wednesday: 8:00 am-4:00 pm
Thursday: 8:00 am-4:00 pm
Friday: 8:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Santa Paula Faulkner - Employer Drug Testing Not Offered

957 Faulkner Rd,

Suite 111

Santa Paula, CA 93060

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17.15 mi away

Schedule Appointment 805-275-3010
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 - Van Nuys 14624 Sherman - Employer Drug Testing Not Offered

14624 Sherman Way,

Ste 101

Van Nuys, CA 91405

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17.85 mi away

Schedule Appointment 818-786-0168
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
Quest Diagnostics - Santa Clarita Soledad

18716 Soledad Canyon Rd,

Santa Clarita, CA 91351

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18.78 mi away

Schedule Appointment 866-697-8378
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 - Sherman Oaks Van Nuys Blvd - Employer Drug Testing Not Offered

4955 Van Nuys Blvd,

Ste 611

Sherman Oaks, CA 91403

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19.0 mi away

Schedule Appointment 818-922-1465
Monday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Tuesday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Wednesday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Thursday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Friday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Sherman Oaks Van Nuys - Employer Drug Testing Not Offered

4849 Van Nuys Blvd,

Ste 208

Sherman Oaks, CA 91403

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19.07 mi away

Schedule Appointment 818-981-9416
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 - Oxnard Lombard - Employer Drug Testing Not Offered

1701 North Lombard Street,

Suite 106

Oxnard, CA 93030

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20.58 mi away

Schedule Appointment 805-263-5774
Monday: 5:30 am-3:30 pm
Tuesday: 5:30 am-3:30 pm
Wednesday: 5:30 am-3:30 pm
Thursday: 5:30 am-3:30 pm
Friday: 5:30 am-3:30 pm
Saturday: 7:30 am-11:30 am
Sunday: Closed
Quest Diagnostics - North Hollywood Riverside - Employer Drug Testing Not Offered

12626 Riverside Dr,

Ste 511

North Hollywood, CA 91607

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21.09 mi away

Schedule Appointment 818-763-5574
Monday: 8:00 am-4:00 pm
Tuesday: 8:00 am-4:00 pm
Wednesday: 8:00 am-4:00 pm
Thursday: 8:00 am-4:00 pm
Friday: 8:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Ventura Telegraph - Employer Drug Testing Not Offered

7880 Telegraph Rd,

Ste D

Ventura, CA 93004

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22.26 mi away

Schedule Appointment 805-659-1231
Monday: 6:30 am-3:00 pm
Tuesday: 6:30 am-3:00 pm
Wednesday: 6:30 am-3:00 pm
Thursday: 6:30 am-3:00 pm
Friday: 6:30 am-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Oxnard Saviers

2600 Saviers Rd,

Oxnard, CA 93033

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22.77 mi away

Schedule Appointment 805-417-7615
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 - Santa Monica 15th - Employer Drug Testing Not Offered

1260 15Th St,

Ste 901

Santa Monica, CA 90404

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23.24 mi away

Schedule Appointment 310-310-9022
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 - Oxnard Ventura Road

509 S Ventura Rd,

Oxnard, CA 93030

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23.25 mi away

Schedule Appointment 805-832-0899
Monday: 5:30 am-4:00 pm
Tuesday: 5:30 am-4:00 pm
Wednesday: 5:30 am-4:00 pm
Thursday: 5:30 am-4:00 pm
Friday: 5:30 am-4:00 pm
Saturday: 7:30 am-11:30 am
Sunday: Closed
Pacific Medical Services Santa Monica - Third Party Phlebotomy Services

2001 Santa Monica Blvd,

Ste 868W

Santa Monica, CA 90404

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23.33 mi away

888-812-5663
Monday: 8:00 am-12:30 pm , 1:00 pm-4:00 pm
Tuesday: 8:00 am-12:30 pm , 1:00 pm-4:00 pm
Wednesday: 8:00 am-12:30 pm , 1:00 pm-4:00 pm
Thursday: 8:00 am-12:30 pm , 1:00 pm-4:00 pm
Friday: 8:00 am-12:30 pm , 1:00 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Beverly Hills Bedford Dr - Employer Drug Testing Not Offered

435 N Bedford Dr,

Ste 112

Beverly Hills, CA 90210

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24.36 mi away

Schedule Appointment 310-270-3178
Monday: 8:00 am-4:00 pm
Tuesday: 8:00 am-4:00 pm
Wednesday: 8:00 am-4:00 pm
Thursday: 8:00 am-4:00 pm
Friday: 8:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Los Angeles Century Park East - Employer Drug Testing Not Offered

2080 Century Park E,

Ste 1201

Los Angeles, CA 90067

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24.52 mi away

Schedule Appointment 213-200-3524
Monday: 8:30 am-12:30 pm , 1:30 pm-4:00 pm
Tuesday: 8:30 am-12:30 pm , 1:30 pm-4:00 pm
Wednesday: 8:30 am-12:30 pm , 1:30 pm-4:00 pm
Thursday: 8:30 am-12:30 pm , 1:30 pm-4:00 pm
Friday: 8:30 am-12:30 pm , 1:30 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Burbank 2601 West Alameda - Employer Drug Testing Not Offered

2601 W Alameda Ave,

Ste 114

Burbank, CA 91505

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24.92 mi away

Schedule Appointment 818-846-4217
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: 7:00 am-11:00 am
Sunday: Closed
Pacific Medical Services Buena Vista - 3rd Party Phlebotomy Service

191 S Buena Vista St,

Ste 335

Burbank, CA 91505

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24.94 mi away

888-812-5663
Monday: 8:00 am-4:00 pm
Tuesday: 8:00 am-4:00 pm
Wednesday: 8:00 am-4:00 pm
Thursday: 8:00 am-4:00 pm
Friday: 8:00 am-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Burbank 201 S Buena Vista

201 S Buena Vista St,

Ste 225

Burbank, CA 91505

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24.95 mi away

Schedule Appointment 818-531-8115
Monday: 7:30 am-5:00 pm
Tuesday: 7:30 am-5:00 pm
Wednesday: 7:30 am-5:00 pm
Thursday: 7:30 am-5:00 pm
Friday: 7:30 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. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.