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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 - Westover Hills - Employer Drug Testing Not Offered

11212 State Highway 151,

Ste 210 Medical Plaza I

San Antonio, TX 78251

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12.21 mi away

Schedule Appointment 210-680-2248
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 - Inside Military Drive Walmart

8923 W Military Dr,

San Antonio, TX 78245

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13.81 mi away

Schedule Appointment 210-404-4462
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 - Bandera Road

6100 Bandera Rd,

Ste 400

San Antonio, TX 78238

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16.91 mi away

Schedule Appointment 210-682-6670
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 - Inside City South Walmart Store

8538 Ih-35 South,

San Antonio, TX 78211

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17.19 mi away

Schedule Appointment 210-209-8452
Monday: 6:30 am-12:00 pm , 1:00 pm-4:00 pm
Tuesday: 6:30 am-12:00 pm , 1:00 pm-4:00 pm
Wednesday: 6:30 am-12:00 pm , 1:00 pm-4:00 pm
Thursday: 6:30 am-12:00 pm , 1:00 pm-4:00 pm
Friday: 6:30 am-12:00 pm , 1:00 pm-4:00 pm
Saturday: 6:30 am-12:00 pm , 1:00 pm-4:00 pm
Sunday: Closed
Quest Diagnostics - Northwest - Employer Drug Testing Not Offered

9234 N Loop 1604 W,

Ste 109

San Antonio, TX 78249

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17.71 mi away

Schedule Appointment 210-647-5666
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 - Oak Hills

7959 Fredericksburg Rd,

Ste 117

San Antonio, TX 78229

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19.52 mi away

Schedule Appointment 726-239-8402
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: 7:30 am-11:30 am
Sunday: Closed
Quest Diagnostics - Villita De Sol- Employer Drug Testing Not Offered

5921 Broadway,

San Antonio, TX 78209

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23.46 mi away

Schedule Appointment 210-212-4668
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: 7:30 am-11:30 am
Sunday: Closed
Quest Diagnostics - Southeast - Employer Drug Testing Not Offered

3859 E Southcross Blvd,

Suite A Minton Plaza

San Antonio, TX 78222

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24.39 mi away

Schedule Appointment 210-337-2436
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 - Northeast - Employer Drug Testing Not Offered

8601 Village Dr,

Suite 106

San Antonio, TX 78217

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26.28 mi away

Schedule Appointment 210-655-2583
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 - Sonterra - Employer Drug Testing Not Offered

1139 E Sonterra Blvd,

Suite 525

San Antonio, TX 78258

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27.36 mi away

Schedule Appointment 210-490-2188
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: 7:30 am-11:30 am
Sunday: Closed
Quest Diagnostics - Hardy Oak

18707 Hardy Oak Blvd,

Suite 560

San Antonio, TX 78258

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27.72 mi away

Schedule Appointment 210-497-0295
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 - Boerne - Employer Drug Testing Not Offered

430 W Bandera Rd,

Ste 6

Boerne, TX 78006

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30.19 mi away

Schedule Appointment 830-249-7439
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: Closed
Sunday: Closed
Quest Diagnostics - Toepperwein - Employer Drug Testing Not Offered

12709 Toepperwein Rd,

Ste 207

Live Oak, TX 78233

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31.22 mi away

Schedule Appointment 210-653-1129
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 - Creekside

7323 N Loop 1604 E,

Ste 501

Live Oak, TX 78233

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32.28 mi away

Schedule Appointment 210-906-9703
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-4:30 pm
Friday: 7:00 am-5:00 pm
Saturday: 7:30 am-11:30 am
Sunday: Closed
Quest Diagnostics - Inside Oaklawn Road Walmart Store

2151 W Oaklawn Rd,

Pleasanton, TX 78064

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34.9 mi away

Schedule Appointment 830-268-2046
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 - Inside Walmart Schertz

6102 Fm 3009,

Schertz, TX 78154

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36.19 mi away

Schedule Appointment 210-742-5501
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 - Inside Singing Oaks Walmart Store

305 Singing Oaks,

Spring Branch, TX 78070

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39.21 mi away

Schedule Appointment 830-515-5868
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 - Communicare New Braunfels

169 E South St,

Ih33

New Braunfels, TX 78130

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47.03 mi away

210-233-7000
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 - New Braunfels - Employer Drug Testing Not Offered

894 Loop 337,

Suite A

New Braunfels, TX 78130

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48.06 mi away

Schedule Appointment 830-608-0122
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 - New Braunfels PSC 46

1770 State Highway 46,

Ste 1105

New Braunfels, TX 78130

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48.65 mi away

Schedule Appointment 830-475-2485
Monday: 6:30 am-12:00 pm , 1:00 pm-3:30 pm
Tuesday: 6:30 am-12:00 pm , 1:00 pm-3:30 pm
Wednesday: 6:30 am-12:00 pm , 1:00 pm-3:30 pm
Thursday: 6:30 am-12:00 pm , 1:00 pm-3:30 pm
Friday: 6:30 am-12:00 pm , 1:00 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Sinus and ENT Center of TX

500 Thompson Dr,

Kerrville, TX 78028

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49.8 mi away

866-697-8378
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: Closed
Thursday: Closed
Friday: Closed
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Seguin - Employer Drug Testing Not Offered

519 N King St,

Suite 102

Seguin, TX 78155

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51.41 mi away

Schedule Appointment 830-379-1777
Monday: 6:00 am-12:00 pm , 1:00 pm-4:00 pm
Tuesday: 6:00 am-12:00 pm , 1:00 pm-4:00 pm
Wednesday: 6:00 am-12:00 pm , 1:00 pm-4:00 pm
Thursday: 6:00 am-12:00 pm , 1:00 pm-4:00 pm
Friday: 6:00 am-12:00 pm , 1:00 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Sinus and ENT Center of TX

205 W Windcrest St,

Suite 210

Fredericksburg, TX 78624

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62.72 mi away

Schedule Appointment 866-697-8378
Monday: Closed
Tuesday: Closed
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
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Dripping Springs

13830 Sawyer Ranch Rd,

Ste 105

Dripping Springs, TX 78620

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74.29 mi away

Schedule Appointment 830-330-1003
Monday: 7:30 am-12:30 pm , 1:30 pm-4:30 pm
Tuesday: 7:30 am-12:30 pm , 1:30 pm-4:30 pm
Wednesday: 7:30 am-12:30 pm , 1:30 pm-4:30 pm
Thursday: 7:30 am-12:30 pm , 1:30 pm-4:30 pm
Friday: 7:30 am-12:30 pm , 1:30 pm-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Beeville

200 W Fm 351,

Suite A

Beeville, TX 78102

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74.66 mi away

Schedule Appointment 361-362-2405
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

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Our company

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.