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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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Texas Health UC - Josey Ln (Preferred)

6225 N Josey Ln,

Ste 100

Lewisville, TX 75056

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1.93 mi away

469-495-9128
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-8:00 pm
Quest Diagnostics - Carrollton

4333 North Josey Lane Plaza Ii,

Suite 105

Carrollton, TX 75010

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4.25 mi away

Schedule Appointment 972-939-8001
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 - Presbyterian Plano

3600 Communications Pkwy,

Ste 647

Plano, TX 75093

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4.57 mi away

Schedule Appointment 972-378-3208
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 - West Parker Rd (Preferred)

5964 W Parker Rd,

Ste 100

Plano, TX 75093

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4.99 mi away

469-495-9122
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-8:00 pm
Texas Health UC - Preston Rd (Preferred)

2855 Preston Rd,

Frisco, TX 75034

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5.14 mi away

469-495-9118
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-8:00 pm
Any Lab Test Now - Frisco (Preferred)

3520 Preston Rd,

Ste 113A

Frisco, TX 75034

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5.3 mi away

972-569-8564
Monday: 8:30 am-6:30 pm
Tuesday: 8:30 am-6:30 pm
Wednesday: 8:30 am-6:30 pm
Thursday: 8:30 am-6:30 pm
Friday: 8:30 am-6:30 pm
Saturday: Closed
Sunday: Closed
Texas Health UC - Eldorado Pkwy (Preferred)

2552 Eldorado Pkwy,

Ste 550

Frisco, TX 75033

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6.49 mi away

469-495-9114
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-8:00 pm
Any Lab Test Now - Plano (Preferred)

4701 W Park Blvd,

Ste 206

Plano, TX 75093

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7.3 mi away

972-596-6181
Monday: 8:30 am-6:30 pm
Tuesday: 8:30 am-6:30 pm
Wednesday: 8:30 am-6:30 pm
Thursday: 8:30 am-6:30 pm
Friday: 8:30 am-6:30 pm
Saturday: Closed
Sunday: Closed
Texas Health UC - Frankford Rd (Preferred)

4635 Frankford Rd,

Dallas, TX 75287

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7.38 mi away

469-495-9106
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-8:00 pm
Quest Diagnostics - Plano Medical Pavillion

3801 W 15Th St,

Ste 100, Bldg A

Plano, TX 75075

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8.67 mi away

Schedule Appointment 972-612-1887
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: 7:30 am-12:00 pm
Sunday: Closed
Chem Chek Co, Inc. (Preferred)

6210 Campbell Rd,

Ste 100

Dallas, TX 75248

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9.05 mi away

972-918-9300
Monday: 9:00 am-3:30 pm
Tuesday: 9:00 am-3:30 pm
Wednesday: 9:00 am-3:30 pm
Thursday: 9:00 am-3:30 pm
Friday: 9:00 am-2:30 pm
Saturday: Closed
Sunday: Closed
Texas Health UC - Coppell (Preferred)

130 N Denton Tap Rd,

Ste 140

Coppell, TX 75019

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9.41 mi away

469-495-9130
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-8:00 pm
Texas Health UC - South Custer Rd (Preferred)

7001 S Custer Rd,

Ste 900

Mckinney, TX 75070

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9.48 mi away

469-495-9116
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-8:00 pm
Quest Diagnostics - Flowermound

4001 Long Prairie Road,

Suite 130

Flowermound, TX 75028

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9.59 mi away

Schedule Appointment 972-355-4059
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
Texas Health UC - Addison (Preferred)

4135 Belt Line Rd,

Ste 124

Addison, TX 75001

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9.77 mi away

469-495-9126
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-8:00 pm

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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.