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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 - Beaumont

3445 Phelan Blvd,

Ste 100

Beaumont, TX 77707

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21.73 mi away

Schedule Appointment 409-835-2554
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 - Orange

230 Strickland Drive,

Orange, TX 77630

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30.16 mi away

Schedule Appointment 409-670-9468
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 - Port Arthur

2501 Jimmy Johnson Blvd,

Suite 303

Port Arthur, TX 77640

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33.52 mi away

Schedule Appointment 409-729-5548
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
CHI St. Luke's - CHI St. Luke's

1717 Hwy 59 Bypass,

Bldg 1

Livingston, TX 77351

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46.36 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
Exam One/Iles Agency - Iles Medical Testing

3729 Ryan St,

Lake Charles, LA 70605

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52.79 mi away

337-562-0835
Monday: 7:30 am-12:00 pm , 1:00 pm-6:00 pm
Tuesday: 7:30 am-12:00 pm , 1:00 pm-6:00 pm
Wednesday: 7:30 am-12:00 pm , 1:00 pm-6:00 pm
Thursday: 7:30 am-12:00 pm , 1:00 pm-6:00 pm
Friday: 7:30 am-12:00 pm , 1:00 pm-6:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - 4533 Kingwood Drive MH

4533 Kingwood Dr,

Kingwood, TX 77345

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58.46 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 - Baytown Plaza

6530 Garth Rd,

Baytown, TX 77521

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59.4 mi away

Schedule Appointment 346-233-0023
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
Outpatient Center Lab Collection Site - At Baytown Methodist

1677A W Baker Rd,

Baytown, TX 77521

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60.9 mi away

281-420-8600
Monday: Vary
Tuesday: Closed
Wednesday: Closed
Thursday: Closed
Friday: Closed
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Northpark - Employer Drug Testing Not Offered

23824 Hwy 59 North,

Suite 23816

Kingwood, TX 77339

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61.36 mi away

Schedule Appointment 281-358-7033
Monday: 7:00 am-5:30 pm
Tuesday: 7:00 am-5:30 pm
Wednesday: 7:00 am-5:30 pm
Thursday: 7:00 am-5:30 pm
Friday: 7:00 am-5:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - North Memorial Drive MH

18955 N Memorial Dr,

Ste 320

Humble, TX 77338

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64.5 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 - Deerbrook Professional

8901 Fm Road 1960,

Suite 203

Humble, TX 77338

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64.94 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
Sabine County Hospital - Sabine County Hospital

2301 Hwy 83 West,

Hemphill, TX 75948

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68.79 mi away

409-787-3300
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 - Conroe

800 Riverwood Court,

Suite 103

Conroe, TX 77304

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68.79 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 - East Freeway

1140 Westmont Dr,

Suite 510

Houston, TX 77015

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69.18 mi away

Schedule Appointment 713-455-0406
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 - Woodlands Med Plaza 2 MH

920 Medical Plaza Dr,

Ste 160

Shenandoah, TX 77380

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69.37 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 - 9200 Pinecroft MH

9200 Pinecrost,

Ste 120

The Woodlands, TX 77380

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69.44 mi away

Schedule Appointment 346-379-4375
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-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - 9305 Pinecroft MH

9305 Pinecroft Dr,

Ste 103

The Woodlands, TX 77380

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69.64 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
Quest Diagnostics - The Woodlands

8850 Six Pines Drive,

Suite 230

The Woodlands, TX 77380

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69.65 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 - Remix Medical

7030 Bretshire Dr,

Houston, TX 77016

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70.46 mi away

832-685-2222
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 - New 1960

930 Fm 1960 Rd E,

Ste B

Houston, TX 77073

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70.55 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 - Lufkin

503 Gaslight Blvd,

Lufkin, TX 75904

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71.21 mi away

Schedule Appointment 936-637-9470
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 - Red Oak - Employer Drug Testing Not Offered

17070 Red Oak Dr,

Suite 106

Houston, TX 77090

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72.13 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 - Pasadena - Employer Drug Testing Not Offered

4904 Fairmont Pkwy,

Building 1

Pasadena, TX 77505

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73.75 mi away

Schedule Appointment 281-991-1277
Monday: 7:00 am-5:30 pm
Tuesday: 7:00 am-5:30 pm
Wednesday: 7:00 am-5:30 pm
Thursday: 7:00 am-5:30 pm
Friday: 7:00 am-5:30 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Clear Point - Employer Drug Testing Not Offered

11454 Space Center Blvd,

Ste A

Houston, TX 77059

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73.95 mi away

Schedule Appointment 281-487-2531
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

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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. © 2025 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.