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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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US Facilities & Operations International Facilities & Operations

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Quest Diagnostics - Conroe

800 Riverwood Court,

Suite 103

Conroe, TX 77304

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18.03 mi away

Schedule Appointment 936-203-1372
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 - The Woodlands

8850 Six Pines Drive,

Suite 230

The Woodlands, TX 77380

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25.42 mi away

Schedule Appointment 281-465-4459
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 - Woodlands Med Plaza 2 MH

920 Medical Plaza Dr,

Ste 160

Shenandoah, TX 77380

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25.5 mi away

Schedule Appointment 281-740-4074
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
Quest Diagnostics - 9305 Pinecroft MH

9305 Pinecroft Dr,

Ste 103

The Woodlands, TX 77380

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25.59 mi away

Schedule Appointment 281-740-1499
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
CHI St. Luke's - CHI St. Luke's

1717 Hwy 59 Bypass,

Bldg 1

Livingston, TX 77351

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28.33 mi away

936-329-8700
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 - Tomball

13406 Medical Complex Dr,

Suite 170

Tomball, TX 77375

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33.58 mi away

Schedule Appointment 281-351-1668
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 - Northpark - Employer Drug Testing Not Offered

23824 Hwy 59 North,

Suite 23816

Kingwood, TX 77339

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34.26 mi away

Schedule Appointment 281-358-7033
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 - New 1960

930 Fm 1960 Rd E,

Ste B

Houston, TX 77073

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35.75 mi away

Schedule Appointment 281-583-1881
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 - 4533 Kingwood Drive MH

4533 Kingwood Dr,

Kingwood, TX 77345

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35.92 mi away

Schedule Appointment 346-287-6506
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 - Red Oak - Employer Drug Testing Not Offered

17070 Red Oak Dr,

Suite 106

Houston, TX 77090

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36.16 mi away

Schedule Appointment 281-893-2578
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 - Deerbrook Professional

8901 Fm Road 1960,

Suite 203

Humble, TX 77338

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37.58 mi away

Schedule Appointment 281-446-0206
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - North Memorial Drive MH

18955 N Memorial Dr,

Ste 320

Humble, TX 77338

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38.31 mi away

Schedule Appointment 281-743-2323
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 - Commons at Willowbrook

7538 Cypress Creek Pkwy,

Houston, TX 77070

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40.43 mi away

Schedule Appointment 281-469-1726
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 - Cypress NW Freeway MH

27700 Nw Freeway,

Ste 160

Cypress, TX 77433

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42.07 mi away

Schedule Appointment 346-379-1611
Monday: 7:00 am-12:00 pm , 1:00 pm-5:00 pm
Tuesday: 7:00 am-12:00 pm , 1:00 pm-5:00 pm
Wednesday: 7:00 am-12:00 pm , 1:00 pm-5:00 pm
Thursday: 7:00 am-12:00 pm , 1:00 pm-5:00 pm
Friday: 7:00 am-12:00 pm , 1:00 pm-5:00 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Barker-Cypress

12344 Barker Cypress Rd,

Ste 170

Cypress, TX 77429

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42.71 mi away

Schedule Appointment 281-746-6407
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 - Jones Road

10680 Jones Road,

Suite 200

Houston, TX 77065

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43.4 mi away

Schedule Appointment 281-894-9214
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Fallbrook

11811 Fm 1960 Rd W,

Suite 155

Houston, TX 77065

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43.74 mi away

Schedule Appointment 281-970-4883
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 - College Station

1605 Rock Prairie Rd,

Ste 100

College Station, TX 77845

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46.96 mi away

Schedule Appointment 979-485-0188
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

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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.