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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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Family 1st Care (Preferred)

1615 Hospital Blvd,

Ste A

Gainesville, TX 76240

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5.91 mi away

940-641-3440
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: Closed
Sunday: Closed
Sherman Medical (Preferred)

2500 N TRAVIS ST,

SHERMAN, TX 75092

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24.69 mi away

903-868-8900
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-4:00 pm
Sunday: Closed
Quest Diagnostics - Inside Sherman Walmart Store

401 E Us Highway 82,

Sherman, TX 75092

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24.89 mi away

Schedule Appointment 903-813-5625
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: 7:00 am-12:00 pm
Sunday: Closed
Absolute Urgent Care (Preferred)

800 W Highway 82,

Gainesville, TX 76240

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25.15 mi away

940-301-5000
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: 9:00 am-4:00 pm
Sunday: 12:00 pm-4:00 pm
Nova Medical Center - Sherman (Preferred)

3811 N Hwy 75,

Ste 200

Sherman, TX 75090

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25.2 mi away

903-838-8882
Monday: 8:30 am-6:00 pm
Tuesday: 8:30 am-6:00 pm
Wednesday: 8:30 am-6:00 pm
Thursday: 8:30 am-6:00 pm
Friday: 8:30 am-6:00 pm
Saturday: Closed
Sunday: Closed
Quality Lab Test - Sherman (Preferred)

1630 Texoma Pkwy,

Sherman, TX 75090

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25.25 mi away

903-487-0900
Monday: 8:30 am-4:30 pm
Tuesday: 8:30 am-4:30 pm
Wednesday: 8:30 am-4:30 pm
Thursday: 8:30 am-4:30 pm
Friday: 8:30 am-4:30 pm
Saturday: Closed
Sunday: Closed
Texas Health Breeze UC - Celina (Preferred)

1341 S Preston Rd,

Ste 100

Celina, TX 75009

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31.27 mi away

469-495-9158
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
Diagnostic Laboratory of Oklahoma - Ardmore

107 N Commerce St,

Ardmore, OK 73401

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33.18 mi away

Schedule Appointment 580-223-2918
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-3:00 pm
Saturday: Closed
Sunday: Closed
Rockford Family Care (Preferred)

317 N Rockford Rd,

Ardmore, OK 73401

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33.43 mi away

580-319-4242
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
Xpress Wellness UC - Ardmore (Preferred)

1675 12Th Ave Nw,

Ardmore, OK 73401

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33.9 mi away

580-798-0234
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: 1:00 pm-6:00 pm
Nova Medical Center - Denton (Preferred)

725 S I 35 E,

STE 188

DENTON, TX 76205

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35.05 mi away

940-222-3800
Monday: 8:30 am-6:00 pm
Tuesday: 8:30 am-6:00 pm
Wednesday: 8:30 am-6:00 pm
Thursday: 8:30 am-6:00 pm
Friday: 8:30 am-6:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Denton

2817 S Mayhill Rd,

Suite 130

Denton, TX 76208

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36.29 mi away

Schedule Appointment 940-384-1807
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
ARCpoint Labs of Denton (Preferred)

2721 Shoreline Dr,

Suite 120

Denton, TX 76207

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36.31 mi away

469-648-3300
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
Quest Diagnostics - Inside Prosper Walmart Supercenter

500 Richland Blvd,

Prosper, TX 75078

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36.35 mi away

Schedule Appointment 972-346-1086
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: 7:00 am-12:00 pm
Sunday: Closed
Texas Health UC - Eldorado Pkwy (Preferred)

2552 Eldorado Pkwy,

Ste 550

Frisco, TX 75033

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37.75 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
Texas Health UC - Denton (Preferred)

4600 Teasley Ln,

Denton, TX 76210

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38.56 mi away

940-307-1020
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
CMUCS-McKinney (Preferred)

210 N Custer Rd,

Ste 100

Mckinney, TX 75070

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38.88 mi away

469-899-0679
Monday: 2:00 pm-3:00 pm
Tuesday: 2:00 pm-3:00 pm
Wednesday: 2:00 pm-3:00 pm
Thursday: 2:00 pm-3:00 pm
Friday: 2:00 pm-3:00 pm
Saturday: 2:00 pm-3:00 pm
Sunday: 2:00 pm-3:00 pm
Texas Health Breeze UC - Melissa (Preferred)

3210 Milrany Lane,

Ste 100

Melissa, TX 75454

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39.97 mi away

469-495-9164
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 - University Dr (Preferred)

3805 W University Dr,

Ste 100

Mckinney, TX 75071

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40.06 mi away

469-495-9102
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 - McKinney (Preferred)

1705 W UNIVERSITY DR,

STE 112

MCKINNEY, TX 75069

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41.02 mi away

214-842-8881
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
Diagnostic Laboratory of Oklahoma - Durant West

1028 Criswell Dr,

Ste 106

Durant, OK 74701

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41.51 mi away

Schedule Appointment 580-931-9733
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-3:00 pm
Saturday: Closed
Sunday: Closed
Xpress Wellness UC - Durant (Preferred)

901 W Main St,

Durant, OK 74701

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42.0 mi away

580-634-2931
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: 1:00 pm-6:00 pm
National Drug Screening, LLC - McKinney (Preferred)

115 E Virginia St,

Ste 202

Mckinney, TX 75069

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42.56 mi away

469-855-1090
Monday: 9:00 am-4:30 pm
Tuesday: 9:00 am-4:30 pm
Wednesday: 9:00 am-4:30 pm
Thursday: 9:00 am-4:30 pm
Friday: 9:00 am-4:30 pm
Saturday: Closed
Sunday: Closed
Texas Health UC - South Custer Rd (Preferred)

7001 S Custer Rd,

Ste 900

Mckinney, TX 75070

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43.28 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
Any Lab Test Now - Frisco (Preferred)

3520 Preston Rd,

Ste 113A

Frisco, TX 75034

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43.43 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 - Preston Rd (Preferred)

2855 Preston Rd,

Frisco, TX 75034

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43.74 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
Quest Diagnostics - McKinney

4510 Medical Center Dr,

Ste 310

McKinney, TX 75069

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44.11 mi away

Schedule Appointment 972-547-0159
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
Occumed Plus - McKinney (Preferred)

4510 Medical Center Dr,

Ste 108

Mckinney, TX 75069

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44.12 mi away

972-548-5356
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
Know Before You Go Drug & Alc Testing (Preferred)

990 State Hwy 5,

# 107

Fairview, TX 75069

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44.38 mi away

469-352-7560
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-4:00 pm
Saturday: 9:00 am-1:00 pm
Sunday: Closed
Texas Health UC - Josey Ln (Preferred)

6225 N Josey Ln,

Ste 100

Lewisville, TX 75056

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45.21 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
Quality Lab Test (Preferred)

945 Stockton Dr,

Unit 4120

Allen, TX 75013

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45.57 mi away

972-332-8513
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 - Flowermound

4001 Long Prairie Road,

Suite 130

Flowermound, TX 75028

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45.63 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
Quest Diagnostics - Presbyterian Plano

3600 Communications Pkwy,

Ste 647

Plano, TX 75093

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46.89 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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47.33 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
Quest Diagnostics - Carrollton

4333 North Josey Lane Plaza Ii,

Suite 105

Carrollton, TX 75010

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47.56 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
Any Lab Test Now - Plano (Preferred)

4701 W Park Blvd,

Ste 206

Plano, TX 75093

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48.98 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
Quest Diagnostics - Plano Medical Pavillion

3801 W 15Th St,

Ste 100, Bldg A

Plano, TX 75075

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49.88 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

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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.