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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 - Eastvale Orbis- Employer Drug Testing Not Offered

6102 Orbis Way,

Ste 510

Eastvale, CA 92880

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3.28 mi away

Schedule Appointment 951-332-3265
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 - Riverside 9041 Magnolia

9041 Magnolia Ave,

Ste 205

Riverside, CA 92503

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7.05 mi away

Schedule Appointment 951-688-3883
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: 8:30 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Riverside 4646 Brockton

4646 Brockton Ave,

Ste 102

Riverside, CA 92506

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7.98 mi away

Schedule Appointment 951-784-7656
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 - Riverside 6926 Brockton - Employer Drug Testing Not Offered

6926 Brockton Ave,

Ste 2

Riverside, CA 92506

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8.03 mi away

Schedule Appointment 951-686-1501
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 - Chino Philadelphia St

5562 Philadelphia St,

Ste 206

Chino, CA 91710

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8.37 mi away

Schedule Appointment 909-203-2625
Monday: 7:00 am-1:00 pm
Tuesday: 7:00 am-1:00 pm
Wednesday: 7:00 am-1:00 pm
Thursday: 7:00 am-1:00 pm
Friday: 7:00 am-1:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Corona W 6th St (308 W. 6th street suite 201)

308 W 6Th St,

Suite 201

Corona, CA 92882

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8.69 mi away

Schedule Appointment 951-415-5610
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 - Upland Foothill

1399 E Foothill Blvd,

Ste B

Upland, CA 91786

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9.27 mi away

Schedule Appointment 909-946-9405
Monday: 5:00 am-4:00 pm
Tuesday: 5:00 am-4:00 pm
Wednesday: 5:00 am-4:00 pm
Thursday: 5:00 am-4:00 pm
Friday: 5:00 am-4:00 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Chino Grand Ave

4028 Grand Ave,

Ste B

Chino, CA 91710

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9.68 mi away

Schedule Appointment 909-548-3485
Monday: 6:30 am-4:30 pm
Tuesday: 6:30 am-4:30 pm
Wednesday: 6:30 am-4:30 pm
Thursday: 6:30 am-4:30 pm
Friday: 6:30 am-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Corona Main

2250 S. Main St,

Ste 105

Corona, CA 92882

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9.98 mi away

Schedule Appointment 951-415-4195
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 - Rancho Cucamonga Lemon - Employer Drug Testing Not Offered

10399 Lemon Ave,

Ste 104

Rancho Cucamonga, CA 91737

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10.11 mi away

Schedule Appointment 909-466-1964
Monday: 5:00 am-5:00 pm
Tuesday: 5:00 am-5:00 pm
Wednesday: 5:00 am-5:00 pm
Thursday: 5:00 am-5:00 pm
Friday: 5:00 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Upland Mountain - Employer Drug Testing Not Offered

573 N Mountain Ave,

Upland, CA 91786

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10.2 mi away

Schedule Appointment 909-981-5941
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 - Fontana Sierra Lakes Parkway - Employer Drug Testing Not Offered

17051 Sierra Lakes Pkwy,

Ste 205

Fontana, CA 92336

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11.08 mi away

Schedule Appointment 909-202-9122
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: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Colton Vernon Ave

1057 N Mount Vernon Ave,

Colton, CA 92324

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12.82 mi away

Schedule Appointment 909-953-4330
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 - Pomona Bonita Avenue - Employer Drug Testing Not Offered

250 W Bonita Ave Bldg A ,,

Ste 130

Pomona, CA 91767

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13.43 mi away

Schedule Appointment 909-455-8253
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: 6:30 am-11:30 am
Sunday: Closed
Quest Diagnostics - Riverside Canyon Springs Pkwy

2711 Canyon Springs Pkwy,

Ste 101

Riverside, CA 92507

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13.9 mi away

Schedule Appointment 951-201-8724
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 - Diamond Bar North Diamond Bar - Employer Drug Testing Not Offered

750 N Diamond Bar Blvd,

Ste 110

Diamond Bar, CA 91765

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14.7 mi away

Schedule Appointment 909-282-6817
Monday: 7:00 am-12:00 pm
Tuesday: 7:00 am-12:00 pm
Wednesday: 7:00 am-12:00 pm
Thursday: 7:00 am-12:00 pm
Friday: 7:00 am-12:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Loma Linda Barton Road - Employer Drug Testing Not Offered

25805 Barton Rd,

Ste A-104

Loma Linda, CA 92354

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15.91 mi away

Schedule Appointment 909-222-7698
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 Bernardino N Waterman Ave

1700 N Waterman Ave,

San Bernardino, CA 92404

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16.31 mi away

Schedule Appointment 909-453-5314
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 - Employer Drug Screens Not Offered - Quest Diagnostics - San Bernardino Waterman Avenue

2150 N Waterman Ave,

Ste 100b

San Bernardino, CA 92404

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16.51 mi away

Schedule Appointment 909-361-7543
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 - Anaheim Hills Anaheim Hills - Employer Drug Testing Not Offered

500 S Anaheim Hills Rd,

Ste 121

Anaheim, CA 92807

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16.7 mi away

Schedule Appointment 714-279-0523
Monday: 5:00 am-2:00 pm
Tuesday: 5:00 am-2:00 pm
Wednesday: 5:00 am-2:00 pm
Thursday: 5:00 am-2:00 pm
Friday: 5:00 am-2:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - San Dimas West Covina Boulevard - Employer Drug Testing Not Offered

1330 W Covina Blvd,

Ste 205

San Dimas, CA 91773

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17.38 mi away

Schedule Appointment 626-201-1152
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 - Redlands Terracina Boulevard - Employer Drug Testing Not Offered

245 Terracina Blvd,

Ste 104B

Redlands, CA 92373

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17.58 mi away

Schedule Appointment 909-798-5846
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 - Placentia North Rose

1206 E Yorba Linda Blvd,

Placentia, CA 92870

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17.98 mi away

Schedule Appointment 657-226-6771
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 - Covina East San Bernardino Road

554 E San Bernardino Rd,

Ste 103

Covina, CA 91723

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19.47 mi away

Schedule Appointment 626-430-8943
Monday: 7:30 am-3:00 pm
Tuesday: 7:30 am-3:00 pm
Wednesday: 7:30 am-3:00 pm
Thursday: 7:30 am-3:00 pm
Friday: 7:30 am-3:00 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Inside Orange Vons Store - Employer Drug Testing Not Offered

2684 N Tustin St,

Orange, CA 92865

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19.68 mi away

Schedule Appointment 714-941-3172
Monday: 8:00 am-12:00 pm , 1:00 pm-5:00 pm
Tuesday: 8:00 am-12:00 pm , 1:00 pm-5:00 pm
Wednesday: 8:00 am-12:00 pm , 1:00 pm-5:00 pm
Thursday: 8:00 am-12:00 pm , 1:00 pm-5:00 pm
Friday: 8:00 am-12:00 pm , 1:00 pm-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Glendora South Grand Avenue - Employer Drug Testing Not Offered

210 S Grand Ave,

Ste 124

Glendora, CA 91741

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20.27 mi away

Schedule Appointment 626-250-1614
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 - Perris 1688 N Perris Blvd - Employer Drug Testing Not Offered

1688 N Perris Blvd,

Ste H1

Perris, CA 92571

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20.98 mi away

Schedule Appointment 951-238-9634
Monday: 7:00 am-12:30 pm
Tuesday: 7:00 am-12:30 pm
Wednesday: 7:00 am-12:30 pm
Thursday: 7:00 am-12:30 pm
Friday: 7:00 am-12:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Hacienda Heights-Azusa Ave

1613 S Azusa Ave,

Hacienda Heights, CA 91745

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21.2 mi away

Schedule Appointment 626-409-9869
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: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - West Covina-California Ave

553 S California Ave,

Ste A

West Covina, CA 91790

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21.65 mi away

Schedule Appointment 626-404-7660
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 - Fullerton Harbor

2720 N Harbor Blvd,

Ste 100

Fullerton, CA 92835

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21.95 mi away

Schedule Appointment 657-217-1883
Monday: 5:00 am-5:00 pm
Tuesday: 5:00 am-5:00 pm
Wednesday: 5:00 am-5:00 pm
Thursday: 5:00 am-5:00 pm
Friday: 5:00 am-5:00 pm
Saturday: 5:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Foothill Ranch - Employer Drug Testing Not Offered

26672 Portola Pkwy,

Foothill Ranch, CA 92610

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22.96 mi away

Schedule Appointment 657-732-2332
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 - Orange South Main St - Employer Drug Testing Not Offered

230 S Main St,

Ste 220

Orange, CA 92868

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22.97 mi away

Schedule Appointment 714-634-2052
Monday: 5:00 am-3:00 pm
Tuesday: 5:00 am-3:00 pm
Wednesday: 5:00 am-3:00 pm
Thursday: 5:00 am-3:00 pm
Friday: 5:00 am-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Orange 1010 West La Veta

1010 W La Veta Ave,

Ste 140

Orange, CA 92868

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23.03 mi away

Schedule Appointment 714-953-2926
Monday: 6:00 am-4:30 pm
Tuesday: 6:00 am-4:30 pm
Wednesday: 6:00 am-4:30 pm
Thursday: 6:00 am-4:30 pm
Friday: 6:00 am-4:30 pm
Saturday: 7:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - Orange 1140 La Veta - Employer Drug Testing Not Offered

1140 W La Veta Ave,

Ste 570

Orange, CA 92868

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23.11 mi away

Schedule Appointment 714-550-6318
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 Ana Tustin Avenue

801 N Tustin Ave,

Ste 102

Santa Ana, CA 92705

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23.19 mi away

Schedule Appointment 657-401-7905
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 - Anaheim La Palma - Employer Drug Testing Not Offered

1120 W La Palma Ave,

Ste 7

Anaheim, CA 92801

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23.56 mi away

Schedule Appointment 657-276-5643
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: Closed
Sunday: Closed
Quest Diagnostics - Yucaipa Oak Glen Road - Employer Drug Testing Not Offered

33490 Oak Glen Road,

Ste D

Yucaipa, CA 92399

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24.39 mi away

Schedule Appointment 909-253-5194
Monday: 7:30 am-12:00 pm , 1:00 pm-3:30 pm
Tuesday: 7:30 am-12:00 pm , 1:00 pm-3:30 pm
Wednesday: 7:30 am-12:00 pm , 1:00 pm-3:30 pm
Thursday: 7:30 am-12:00 pm , 1:00 pm-3:30 pm
Friday: 7:30 am-12:00 pm , 1:00 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Tustin Kensington - Employer Drug Testing Not Offered

15000 Kensington Park Ave,

Ste 190

Tustin, CA 92782

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24.62 mi away

Schedule Appointment 442-256-1508
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 - Rancho Santa Margarita El Paseo - Employer Drug Testing Not Offered

22312 El Paseo,

Ste H

Rancho Santa Margarita, CA 92688

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24.95 mi away

Schedule Appointment 949-236-0269
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

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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.