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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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CareNow- Mesquite (Preferred)

565 W Interstate 30,

Garland, TX 75043

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1.26 mi away

972-303-3030
Monday: 8:00 am-8:00 pm
Tuesday: 8:00 am-8:00 pm
Wednesday: 8:00 am-8:00 pm
Thursday: 8:00 am-8:00 pm
Friday: 8:00 am-8:00 pm
Saturday: 8:00 am-8:00 pm
Sunday: 8:00 am-5:00 pm
Medprem Urgent Care (Preferred)

3705 N Belt Line Rd,

Ste 150

Sunnyvale, TX 75182

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2.75 mi away

972-203-9000
Monday: 9:00 am-9:00 pm
Tuesday: 9:00 am-9:00 pm
Wednesday: 9:00 am-9:00 pm
Thursday: 9:00 am-9:00 pm
Friday: 9:00 am-9:00 pm
Saturday: 9:00 am-6:00 pm
Sunday: 9:00 am-6:00 pm
CareNow- Rowlett (Preferred)

2101 Lakeview Pkwy,

Ste 300

Rowlett, TX 75088

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3.65 mi away

972-412-1712
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-4:00 pm
Sunday: 8:00 am-4:00 pm
AFC Urgent Care - Rowlett (Preferred)

4724 Lakeview Pkwy,

Ste 300

Rowlett, TX 75088

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3.98 mi away

469-947-6240
Monday: 8:00 am-7:00 pm
Tuesday: 8:00 am-7:00 pm
Wednesday: 8:00 am-7:00 pm
Thursday: 8:00 am-7:00 pm
Friday: 8:00 am-7:00 pm
Saturday: 8:00 am-5:00 pm
Sunday: 8:00 am-5:00 pm
Quest Diagnostics - Mesquite

3230 I- 30 East,

Suite 101

Mesquite, TX 75150

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4.22 mi away

Schedule Appointment 972-686-4602
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
Occumed Plus (Preferred)

2046 Forest Ln,

Ste 180

Garland, TX 75042

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5.04 mi away

972-494-1419
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
Bluestar Diagnostics - White Rock Lake (Preferred)

10611 Garland Rd,

Ste 112

Dallas, TX 75218

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5.25 mi away

469-694-2842
Monday: 8:30 am-4:00 pm
Tuesday: 8:30 am-4:00 pm
Wednesday: 8:30 am-4:00 pm
Thursday: 8:30 am-4:00 pm
Friday: 8:30 am-4:00 pm
Saturday: Closed
Sunday: Closed
Integrity Urgent Care - Rowlett (Preferred)

8301 Lakeview Pkwy,

Ste 200

Rowlett, TX 75088

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5.59 mi away

972-499-7250
Monday: 8:00 am-7:00 pm
Tuesday: 8:00 am-7:00 pm
Wednesday: 8:00 am-7:00 pm
Thursday: 8:00 am-7:00 pm
Friday: 8:00 am-7:00 pm
Saturday: 8:00 am-7:00 pm
Sunday: 10:00 am-5:00 pm
CareNow- Casa Linda (Preferred)

9540 GARLAND RD,

STE C408

Dallas, TX 75218

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5.98 mi away

214-321-0015
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-4:00 pm
Sunday: 8:00 am-4:00 pm
Quest Diagnostics - Casa Linda

1151 N Buckner Blvd,

Ste 202

Dallas, TX 75218

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6.11 mi away

Schedule Appointment 214-321-1577
Monday: 7:00 am-12:00 pm , 1:00 pm-4:00 pm
Tuesday: 7:00 am-12:00 pm , 1:00 pm-4:00 pm
Wednesday: 7:00 am-12:00 pm , 1:00 pm-4:00 pm
Thursday: 7:00 am-12:00 pm , 1:00 pm-4:00 pm
Friday: 7:00 am-12:00 pm , 1:00 pm-4:00 pm
Saturday: Closed
Sunday: Closed
CareNow- Heath (Preferred)

529 Laurence Dr,

Heath, TX 75032

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6.51 mi away

469-935-8040
Monday: 8:00 am-6:00 pm
Tuesday: 8:00 am-6:00 pm
Wednesday: 8:00 am-6:00 pm
Thursday: 8:00 am-6:00 pm
Friday: 8:00 am-6:00 pm
Saturday: 8:00 am-6:00 pm
Sunday: 12:00 pm-6:00 pm
Quest Diagnostics - Rockwall

1201 Arista Dr,

Suite 107

Rockwall, TX 75032

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6.75 mi away

Schedule Appointment 972-532-7151
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
CareNow- Rockwall (Preferred)

600 Horizon Rd,

Rockwall, TX 75032

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6.76 mi away

972-332-5555
Monday: 9:00 am-5:00 pm
Tuesday: 9:00 am-5:00 pm
Wednesday: 9:00 am-5:00 pm
Thursday: 9:00 am-5:00 pm
Friday: 9:00 am-5:00 pm
Saturday: Closed
Sunday: Closed
Test First (Preferred)

6300 Samuell Blvd,

Ste 115

Dallas, TX 75228

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7.12 mi away

214-275-6300
Monday: 9:00 am-5:00 pm
Tuesday: 9:00 am-5:00 pm
Wednesday: 9:00 am-5:00 pm
Thursday: 9:00 am-5:00 pm
Friday: 9:00 am-5:00 pm
Saturday: 9:00 am-1:00 pm
Sunday: Closed
DOT Medical Drug Testing Svcs (Preferred)

4801 S Buckner Blvd,

Ste 500

Dallas, TX 75227

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7.33 mi away

945-224-0050
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
Arc Serenity Services (Preferred)

11418 Audelia Rd,

Dallas, TX 75243

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7.42 mi away

844-238-3717
Monday: 9:00 am-6:00 pm
Tuesday: 9:00 am-6:00 pm
Wednesday: 9:00 am-6:00 pm
Thursday: 9:00 am-6:00 pm
Friday: 9:00 am-6:00 pm
Saturday: Closed
Sunday: 10:00 am-2:00 pm
CareNow- N Garland (Preferred)

5106 N George Bush Hwy,

Garland, TX 75040

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7.83 mi away

972-530-1900
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
Texas Health UC - Northwest Hwy (Preferred)

6411 E Northwest Hwy,

Ste D-120

Dallas, TX 75231

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8.38 mi away

469-495-9110
Monday: 8:00 am-6:00 pm
Tuesday: 8:00 am-6:00 pm
Wednesday: 8:00 am-6:00 pm
Thursday: 8:00 am-6:00 pm
Friday: 8:00 am-6:00 pm
Saturday: 8:00 am-6:00 pm
Sunday: 8:00 am-6:00 pm
Texas Health UC - Rockwall (Preferred)

2235 S Goliad St,

Ste 110

Rockwall, TX 75032

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8.43 mi away

469-495-9142
Monday: 8:00 am-6:00 pm
Tuesday: 8:00 am-6:00 pm
Wednesday: 8:00 am-6:00 pm
Thursday: 8:00 am-6:00 pm
Friday: 8:00 am-6:00 pm
Saturday: 8:00 am-6:00 pm
Sunday: 8:00 am-6:00 pm
Texas Health UC - Richardson (Preferred)

1225 E Belt Line Rd,

Ste 200

Richardson, TX 75081

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8.51 mi away

469-495-9154
Monday: 8:00 am-6:00 pm
Tuesday: 8:00 am-6:00 pm
Wednesday: 8:00 am-6:00 pm
Thursday: 8:00 am-6:00 pm
Friday: 8:00 am-6:00 pm
Saturday: 8:00 am-6:00 pm
Sunday: 8:00 am-6:00 pm
CareNow- Balch Springs (Preferred)

12127 Lake June Rd,

Suite B

Balch Springs, TX 75180

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8.54 mi away

469-872-5393
Monday: 8:00 am-8:00 pm
Tuesday: 8:00 am-8:00 pm
Wednesday: 8:00 am-8:00 pm
Thursday: 8:00 am-8:00 pm
Friday: 8:00 am-8:00 pm
Saturday: 8:00 am-5:00 pm
Sunday: 8:00 am-5:00 pm
CareNow- Abrams (Preferred)

9323 Lyndon B Johnson Fwy,

Dallas, TX 75243

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8.61 mi away

972-570-3003
Monday: 8:00 am-5:00 am
Tuesday: 8:00 am-5:00 am
Wednesday: 8:00 am-5:00 am
Thursday: 8:00 am-5:00 am
Friday: 8:00 am-5:00 am
Saturday: Closed
Sunday: Closed
Any Lab Test Now - Lakewood (Preferred)

6333 E Mockingbird Ln,

Ste 121

Dallas, TX 75214

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8.67 mi away

469-372-2269
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: 9:00 am-1:00 pm
Sunday: Closed
CareNow- Lakewood (Preferred)

2221 Abrams Rd,

Dallas, TX 75214

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8.95 mi away

972-674-8510
Monday: 8:00 am-9:00 pm
Tuesday: 8:00 am-9:00 pm
Wednesday: 8:00 am-9:00 pm
Thursday: 8:00 am-9:00 pm
Friday: 8:00 am-9:00 pm
Saturday: 8:00 am-8:00 pm
Sunday: 8:00 am-5:00 pm
ProSalutem (Preferred)

12606 Greenville Ave,

Ste 100

Dallas, TX 75243

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9.0 mi away

469-294-2183
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
CareNow- Greenville (Preferred)

4844 Greenville Ave,

Dallas, TX 75206

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9.42 mi away

214-295-9410
Monday: 8:00 am-8:00 pm
Tuesday: 8:00 am-8:00 pm
Wednesday: 8:00 am-8:00 pm
Thursday: 8:00 am-8:00 pm
Friday: 8:00 am-8:00 pm
Saturday: 8:00 am-6:00 pm
Sunday: 8:00 am-6:00 pm

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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.