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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 - Coalinga 155 S 5th St

155 S 5Th St,

Coalinga, CA 93210

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28.28 mi away

Schedule Appointment 559-934-1531
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 - Kerman South Madera

177 S Madera Ave,

Kerman, CA 93630

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29.48 mi away

Schedule Appointment 559-240-9079
Monday: 6:30 am-11:00 am , 12:00 pm-3:30 pm
Tuesday: 6:30 am-11:00 am , 12:00 pm-3:30 pm
Wednesday: 6:30 am-11:00 am , 12:00 pm-3:30 pm
Thursday: 6:30 am-11:00 am , 12:00 pm-3:30 pm
Friday: 6:30 am-11:00 am , 12:00 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Madera East Almond Avenue

363 East Almond Avenue,

Suite 107

Madera, CA 93637

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39.11 mi away

Schedule Appointment 559-662-8993
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 - Employer Drug Screens Not Offered - Los Banos West I Street

730 W I St,

Los Banos, CA 93635

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40.97 mi away

Schedule Appointment 209-827-3628
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 - Fresno W Shaw Avenue

3741 W Shaw Ave,

Fresno, CA 93711

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41.21 mi away

Schedule Appointment 559-276-5648
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 - Fresno N West Avenue - Employer Drug Testing Not Offered

7035 N West Avenue,

Suite 107

Fresno, CA 93711

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43.75 mi away

Schedule Appointment 559-431-4382
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 - Chowchilla Trinity Avenue - Employer Drug Testing Not Offered

341 Trinity Ave,

Chowchilla, CA 93610

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43.96 mi away

Schedule Appointment 559-665-7286
Monday: 6:00 am-2:00 pm
Tuesday: 6:00 am-2:00 pm
Wednesday: 6:00 am-2:00 pm
Thursday: 6:00 am-2:00 pm
Friday: 6:00 am-2:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Fresno North Palm Avenue - Employer Drug Testing Not Offered

7355 N Palm Ave,

Ste 106

Fresno, CA 93711

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44.77 mi away

Schedule Appointment 559-650-9000
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 - Fresno North 1st Street - Employer Drug Testing Not Offered

4182 N 1St St,

Ste 103

Fresno, CA 93726

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45.02 mi away

Schedule Appointment 559-230-0992
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: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Fresno North Fresno Street - Employer Drug Testing Not Offered

6307 N Fresno Street,

Suite 101

Fresno, CA 93710

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45.58 mi away

Schedule Appointment 559-417-8086
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 - Fresno North Maple Avenue

7075 N. Maple Ave,

Ste 104

Fresno, CA 93720

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47.54 mi away

Schedule Appointment 559-299-5074
Monday: 7:00 am-5:00 pm
Tuesday: 7:00 am-5:00 pm
Wednesday: 7:00 am-5:00 pm
Thursday: 7:00 am-5:00 pm
Friday: 7:00 am-5:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Fresno North Recreation Avenue - Employer Drug Testing Not Offered

7050 North Recreation Avenue,

Suite 104

Fresno, CA 93720

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47.84 mi away

Schedule Appointment 559-299-4865
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 - Hanford Mall Dr

325 Mall Dr,

Hanford, CA 93230

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48.37 mi away

Schedule Appointment 559-582-0308
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: Closed
Sunday: Closed
Quest Diagnostics - Clovis West Herndon Avenue - Employer Drug Testing Not Offered

275 W Herndon Ave,

Clovis, CA 93612

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49.01 mi away

Schedule Appointment 559-325-5567
Monday: 7:00 am-5:00 pm
Tuesday: 7:00 am-5:00 pm
Wednesday: 7:00 am-5:00 pm
Thursday: 7:00 am-5:00 pm
Friday: 7:00 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Inside Hollister Safeway Store - Employer Drug Testing Not Offered

591 Tres Pinos Rd,

Hollister, CA 95023

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49.98 mi away

Schedule Appointment 831-902-2070
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 - Selma Dockery Ave

2256 Dockery Ave,

Ste B

Selma, CA 93662

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50.04 mi away

Schedule Appointment 559-891-1358
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: Closed
Sunday: Closed
Quest Diagnostics - Inside Clovis Vons Store - Employer Drug Testing Not Offered

1650 Herndon Ave,

Clovis, CA 93611

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50.37 mi away

Schedule Appointment 559-299-3157
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 - Clovis Herndon

2187 Herndon Ave,

Clovis, CA 93611

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50.91 mi away

Schedule Appointment 559-207-4212
Monday: 6:00 am-5:00 pm
Tuesday: 6:00 am-5:00 pm
Wednesday: 6:00 am-5:00 pm
Thursday: 6:00 am-5:00 pm
Friday: 6:00 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Sanger Jensen

2675 Jensen,

Ste B

Sanger, CA 93657

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52.84 mi away

Schedule Appointment 559-203-2584
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 - Merced West Childs Avenue - Employer Drug Testing Not Offered

857 W Childs Ave,

Merced, CA 95341

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52.95 mi away

Schedule Appointment 209-725-0658
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 - Merced East 13th - Employer Drug Testing Not Offered

240 East 13th Street,

Suite A

Merced, CA 95340

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53.33 mi away

Schedule Appointment 209-383-3531
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 - Merced G Street - Employer Drug Testing Not Offered

3377 G Street,

Ste A

Merced, CA 95340

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55.6 mi away

Schedule Appointment 209-388-1046
Monday: 5:30 am-4:30 pm
Tuesday: 5:30 am-4:30 pm
Wednesday: 5:30 am-4:30 pm
Thursday: 5:30 am-4:30 pm
Friday: 5:30 am-4:30 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Employer Drug Screens Not Offered - Atwater Commerce Ave

1271 Commerce Ave,

Shops 5

Atwater, CA 95301

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56.81 mi away

Schedule Appointment 209-628-7860
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 - Reedley North Reed Avenue

789 N Reed Ave,

Reedley, CA 93654

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57.77 mi away

Schedule Appointment 559-637-9530
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 - Salinas Alvin Drive

631 E Alvin Dr,

Ste G1

Salinas, CA 93906

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59.0 mi away

Schedule Appointment 831-751-2280
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Visalia South Tamarack Street

131 S Tamarack St,

Ste B

Visalia, CA 93291

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64.57 mi away

Schedule Appointment 559-738-1961
Monday: 6:00 am-3:30 pm
Tuesday: 6:00 am-3:30 pm
Wednesday: 6:00 am-3:30 pm
Thursday: 6:00 am-3:30 pm
Friday: 6:00 am-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Gilroy Wren Avenue - Employer Drug Testing Not Offered

7880 Wren Avenue,

Suite A114

Gilroy, CA 95020

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64.69 mi away

Schedule Appointment 408-201-3232
Monday: 7:00 am-1:30 pm
Tuesday: 7:00 am-1:30 pm
Wednesday: 7:00 am-1:30 pm
Thursday: 7:00 am-1:30 pm
Friday: 7:00 am-1:30 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Gilroy No Name Uno- Employer Drug Testing Not Offered

9360 No Name Uno,

Ste 220

Gilroy, CA 95020

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64.94 mi away

Schedule Appointment 408-337-3231
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 - Marina Reservation Road - Employer Drug Testing Not Offered

294 Reservation Rd,

Marina, CA 93933

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67.18 mi away

Schedule Appointment 831-384-6091
Monday: 7:30 am-11:30 am , 12:00 pm-3:30 pm
Tuesday: 7:30 am-11:30 am , 12:00 pm-3:30 pm
Wednesday: 7:30 am-11:30 am , 12:00 pm-3:30 pm
Thursday: 7:30 am-11:30 am , 12:00 pm-3:30 pm
Friday: 7:30 am-11:30 am , 12:00 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Tulare North Blackstone

919 N Blackstone St,

Tulare, CA 93274

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67.47 mi away

Schedule Appointment 559-684-1655
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: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Visalia Court - Employer Drug Testing Not Offered

1827 S Court St,

Ste D

Visalia, CA 93277

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67.84 mi away

Schedule Appointment 559-616-0538
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 - Inside Del Ray Oaks Safeway Store - Employer Drug Testing Not Offered

815 Canyon Del Rey Blvd,

Del Rey Oaks, CA 93940

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69.45 mi away

Schedule Appointment 831-718-3531
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 - Turlock East Hawkeye Avenue

777 E Hawkeye Ave,

Ste 1

Turlock, CA 95380

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69.85 mi away

Schedule Appointment 209-202-9175
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 - Turlock East Tuolumne - Employer Drug Testing Not Offered

981 East Tuolumne Road,

Suite 100

Turlock, CA 95382

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70.35 mi away

Schedule Appointment 209-202-9569
Monday: 6:00 am-4:00 pm
Tuesday: 6:00 am-4:00 pm
Wednesday: 6:00 am-4:00 pm
Thursday: 6:00 am-4:00 pm
Friday: 6:00 am-4:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Freedom Green Valley Rd

202 Green Valley Rd,

Ste A

Freedom, CA 95019

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71.08 mi away

Schedule Appointment 831-728-0808
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Monterey Pacific Street

757 Pacific St,

Ste B1

Monterey, CA 93940

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71.92 mi away

Schedule Appointment 831-373-1871
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 - Employer Drug Testing Not Offered - Morgan Hill East Main Street

50 East Main Avenue,

Suite B

Morgan Hill, CA 95037

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72.29 mi away

Schedule Appointment 408-201-3251
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 - Patterson Sperry

1045 Sperry Ave,

Ste D

Patterson, CA 95363

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72.48 mi away

Schedule Appointment 209-202-9293
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 - Oakhurst Victoria

48677 Victoria Ln,

Oakhurst, CA 93644

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72.69 mi away

Schedule Appointment 559-683-0909
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 - Mariposa Highway 49

5300 Highway 49 N,

Mariposa, CA 95338

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73.55 mi away

Schedule Appointment 209-966-2529
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

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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.