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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 - Lake Jackson

201 B Hwy 332 West,

Suite 1000

Lake Jackson, TX 77566

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13.8 mi away

Schedule Appointment 979-299-7457
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 - League City MH

2555 Gulf Fwy S,

Ste B

League City, TX 77573

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21.47 mi away

Schedule Appointment 281-753-9138
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 - Texas City

7111 Medical Center Dr,

Suite 114

Texas City, TX 77591

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21.91 mi away

Schedule Appointment 409-933-1344
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 - Inside Pearland Randalls Store - Employer Drug Testing Not Offered

10228 W Broadway,

Pearland, TX 77584

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23.23 mi away

Schedule Appointment 713-340-3171
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 - Kingsley- Employer Drug Testing Not Offered

3129 Kingsley Dr,

Ste 2010

Pearland, TX 77584

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23.43 mi away

Schedule Appointment 346-689-2606
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 - Pearland MH

10907 Memorial Hermann Dr,

Ste 120

Pearland, TX 77584

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23.72 mi away

Schedule Appointment 346-833-1704
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 Lake

600 N Kobayashi,

Ste 109

Webster, TX 77598

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24.33 mi away

Schedule Appointment 346-230-2014
Monday: 6:00 am-5:30 pm
Tuesday: 6:00 am-5:30 pm
Wednesday: 6:00 am-5:30 pm
Thursday: 6:00 am-5:30 pm
Friday: 6:00 am-5:30 pm
Saturday: 8:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - Bay Area

106 W Bay Area Blvd,

Suite A

Webster, TX 77598

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25.24 mi away

Schedule Appointment 281-332-1038
Monday: 6:00 am-6:00 pm
Tuesday: 6:00 am-6:00 pm
Wednesday: 6:00 am-6:00 pm
Thursday: 6:00 am-6:00 pm
Friday: 6:00 am-6:00 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Astoria Blvd MH

11914 Astoria Blvd,

Ste 110

Houston, TX 77089

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26.02 mi away

Schedule Appointment 281-740-8755
Monday: 7:30 am-5:30 pm
Tuesday: 7:30 am-5:30 pm
Wednesday: 7:30 am-5:30 pm
Thursday: 7:30 am-5:30 pm
Friday: 7:30 am-5:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Sweetwater Plaza

4971 Sweetwater Blvd,

Sugar Land, TX 77479

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29.83 mi away

Schedule Appointment 346-516-9407
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 - Clear Point - Employer Drug Testing Not Offered

11454 Space Center Blvd,

Ste A

Houston, TX 77059

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29.87 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
Quest Diagnostics - MLK

8610 Martin Luther King Blvd,

Suite B

Houston, TX 77033

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30.27 mi away

Schedule Appointment 713-816-1940
Monday: 8:30 am-5:30 pm
Tuesday: 8:30 am-5:30 pm
Wednesday: 8:30 am-3:00 pm
Thursday: 8:30 am-5:30 pm
Friday: 8:30 am-5:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - 17510 West Grand Pkwy MH

17510 W Grand Pkwy S,

Ste 390

Sugar Land, TX 77479

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30.34 mi away

Schedule Appointment 979-253-4098
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 - 17520 West Grand Pkwy MH

17520 W Grand Pkwy S,

Ste 240

Sugar Land, TX 77479

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30.37 mi away

Schedule Appointment 346-274-3867
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 - Pasadena - Employer Drug Testing Not Offered

4904 Fairmont Pkwy,

Building 1

Pasadena, TX 77505

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30.97 mi away

Schedule Appointment 281-991-1277
Monday: 6:30 am-5:30 pm
Tuesday: 6:30 am-5:30 pm
Wednesday: 6:30 am-5:30 pm
Thursday: 6:30 am-5:30 pm
Friday: 6:30 am-5:30 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Inside Richmond Walmart Store

5330 Fm 1640 Rd,

Richmond, TX 77469

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32.39 mi away

Schedule Appointment 281-344-2107
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: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - 7400 Fannin - Employer Drug Testing Not Offered

7400 Fannin St,

Suite 180

Houston, TX 77054

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32.97 mi away

Schedule Appointment 713-791-1684
Monday: 8:30 am-5:30 pm
Tuesday: 8:30 am-5:30 pm
Wednesday: 8:30 am-5:30 pm
Thursday: 8:30 am-5:30 pm
Friday: 8:30 am-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Richmond PSC

1601 Main St,

Suite 208

Richmond, TX 77469

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33.75 mi away

Schedule Appointment 281-342-5069
Monday: 7:30 am-11:30 am , 12:00 pm-4:30 pm
Tuesday: 7:30 am-11:30 am , 12:00 pm-4:30 pm
Wednesday: 7:30 am-11:30 am , 12:00 pm-4:30 pm
Thursday: 7:30 am-11:30 am , 12:00 pm-4:30 pm
Friday: 7:30 am-11:30 am , 12:00 pm-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Inside W Holcombe Rd Randalls Store - Employer Drug Testing Not Offered

3131 W Holcombe Blvd,

Houston, TX 77025

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33.83 mi away

Schedule Appointment 713-667-7772
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Wednesbury

8200 Wednesbury Ln,

Suite 450

Houston, TX 77074

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33.97 mi away

Schedule Appointment 713-271-3820
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 - 7737 SW Freeway MH

7737 Southwest Fwy,

Ste 940

Houston, TX 77074

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34.21 mi away

Schedule Appointment 713-205-7685
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 - 6410 Fannin - Employer Drug Testing Not Offered

6410 Fannin St,

Suite 220

Houston, TX 77030

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34.32 mi away

Schedule Appointment 713-791-9101
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 - Bellaire West Loop MH

6700 West Loop S,

Ste 320

Bellaire, TX 77401

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34.32 mi away

Schedule Appointment 713-724-7106
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 - Binz

1200 Binz St,

Ste 115

Houston, TX 77004

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34.96 mi away

Schedule Appointment 713-527-8058
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 - 4625 SOUTHWEST

4625 Southwest Freeway,

Site 142

Houston, TX 77027

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35.72 mi away

Schedule Appointment 346-887-6363
Monday: 7:30 am-5:30 pm
Tuesday: 7:30 am-5:30 pm
Wednesday: 7:30 am-5:30 pm
Thursday: 7:30 am-5:30 pm
Friday: 7:30 am-5:30 pm
Saturday: Closed
Sunday: Closed
Matagorda County Hospital - Matagorda County Hospital

1115 Avenue G,

1st Floor

Bay City, TX 77414

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37.04 mi away

979-241-6791
Monday: 9:00 am-4:00 pm
Tuesday: 9:00 am-4:00 pm
Wednesday: 9:00 am-4:00 pm
Thursday: 9:00 am-4:00 pm
Friday: 9:00 am-4:00 pm
Saturday: 9:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - West Houston Medical Center

12121 Richmond Ave,

Suite 124

Houston, TX 77082

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37.74 mi away

Schedule Appointment 281-752-6171
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 - Jasmine Internal Medicine

7417 W Grand Pkwy S,

Ste 150

Richmond, TX 77407

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37.97 mi away

866-697-8378
Monday: Closed
Tuesday: Closed
Wednesday: 8:00 am-12:30 pm , 1:00 pm-3:45 pm
Thursday: 8:00 am-12:30 pm , 1:00 pm-3:45 pm
Friday: 8:00 am-12:30 pm , 1:00 pm-3:45 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - MH Convenient Care Center

1431 Studemont St,

Ste 700

Houston, TX 77007

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38.42 mi away

Schedule Appointment 281-740-7989
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
Matagorda County Hospital - Matagorda County

104 7Th St,

Bay City, TX 77414

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38.51 mi away

979-241-5922
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - East Freeway

1140 Westmont Dr,

Suite 510

Houston, TX 77015

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38.86 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 - Memorial

12850 Memorial Dr,

Ste 1145A

Houston, TX 77024

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40.12 mi away

Schedule Appointment 713-877-6000
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 - Memorial City Plaza 3 PSC

915 Gessner Rd,

Ste 480

Houston, TX 77024

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40.27 mi away

Schedule Appointment 713-805-3714
Monday: 7:30 am-5:30 pm
Tuesday: 7:30 am-5:30 pm
Wednesday: 7:30 am-5:30 pm
Thursday: 7:30 am-5:30 pm
Friday: 7:30 am-5:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Memorial City Plaza 4 MH - Employer Drug Testing Not Offered

925 Gessner Rd,

Ste 490

Houston, TX 77024

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40.36 mi away

Schedule Appointment 713-816-6482
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 - 1 Medical Building - Employer Drug Testing Not Offered

10837 Katy Fwy,

Suite 150

Houston, TX 77079

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40.85 mi away

Schedule Appointment 713-461-5914
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 - Northwest

1919 North Loop W,

Suite 125

Houston, TX 77008

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41.15 mi away

Schedule Appointment 713-386-1964
Monday: 6:30 am-5:00 pm
Tuesday: 6:30 am-5:00 pm
Wednesday: 6:30 am-5:00 pm
Thursday: 6:30 am-5:00 pm
Friday: 6:30 am-5:00 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - 1631 North Loop MH

1631 North Loop W,

Ste 170

Houston, TX 77008

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41.19 mi away

Schedule Appointment 281-740-5945
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 Testing Not Offered - Wharton

2112 Regional Medical Dr,

Ste. 1303

Wharton, TX 77488

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42.08 mi away

Schedule Appointment 979-253-4068
Monday: 7:30 am-12:30 pm , 1:00 pm-4:00 pm
Tuesday: 7:30 am-12:30 pm , 1:00 pm-4:00 pm
Wednesday: 7:30 am-12:30 pm , 1:00 pm-4:00 pm
Thursday: 7:30 am-12:30 pm , 1:00 pm-4:00 pm
Friday: 7:30 am-12:30 pm , 1:00 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Fry Road

952 S Fry Rd,

Katy, TX 77450

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43.21 mi away

Schedule Appointment 281-599-9603
Monday: 6:30 am-5:00 pm
Tuesday: 6:30 am-5:00 pm
Wednesday: 6:30 am-5:00 pm
Thursday: 6:30 am-5:00 pm
Friday: 6:30 am-5:00 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Baytown Plaza

6530 Garth Rd,

Baytown, TX 77521

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44.16 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
Quest Diagnostics - Katy Medical Arts

1331 W Grand Pkwy N,

Ste 110

Katy, TX 77493

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45.9 mi away

Schedule Appointment 346-745-3508
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 - Katy PSC

23920 Katy Fwy,

Ste 465

Katy, TX 77494

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45.92 mi away

Schedule Appointment 346-287-6403
Monday: 7:30 am-5:30 pm
Tuesday: 7:30 am-5:30 pm
Wednesday: 7:30 am-5:30 pm
Thursday: 7:30 am-5:30 pm
Friday: 7:30 am-5:30 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Randalls Clay Rd

18322 Clay Rd,

Houston, TX 77084

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46.18 mi away

Schedule Appointment 832-544-6506
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

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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. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only. May include AI-generated and/or AI-modified imagery.