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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 - Commons at Willowbrook

7538 Cypress Creek Pkwy,

Houston, TX 77070

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2.03 mi away

Schedule Appointment 281-469-1726
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 - Jones Road

10680 Jones Road,

Suite 200

Houston, TX 77065

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3.65 mi away

Schedule Appointment 281-894-9214
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 - Fallbrook

11811 Fm 1960 Rd W,

Suite 155

Houston, TX 77065

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3.98 mi away

Schedule Appointment 281-970-4883
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 - Barker-Cypress

12344 Barker Cypress Rd,

Ste 170

Cypress, TX 77429

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5.38 mi away

Schedule Appointment 281-746-6407
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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7.35 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 - Tomball

13406 Medical Complex Dr,

Suite 170

Tomball, TX 77375

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7.68 mi away

Schedule Appointment 281-351-1668
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 - Cypress NW Freeway MH

27700 Nw Freeway,

Ste 160

Cypress, TX 77433

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8.39 mi away

Schedule Appointment 346-379-1611
Monday: 7:00 am-12:00 pm , 1:00 pm-5:00 pm
Tuesday: 7:00 am-12:00 pm , 1:00 pm-5:00 pm
Wednesday: 7:00 am-12:00 pm , 1:00 pm-5:00 pm
Thursday: 7:00 am-12:00 pm , 1:00 pm-5:00 pm
Friday: 7:00 am-12:00 pm , 1:00 pm-5:00 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - New 1960

930 Fm 1960 Rd E,

Ste B

Houston, TX 77073

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8.94 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 - Inside Clay Randalls Store

18322 Clay Rd,

Houston, TX 77084

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11.75 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
Quest Diagnostics - Westside MH

1140 Business Center Dr,

Ste 206

Houston, TX 77043

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13.19 mi away

Schedule Appointment 346-287-6501
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 - 1 Medical Building - Employer Drug Testing Not Offered

10837 Katy Fwy,

Suite 150

Houston, TX 77079

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13.61 mi away

Schedule Appointment 713-461-5914
Monday: 8:00 am-5:00 pm
Tuesday: 7:30 am-5:00 pm
Wednesday: 8:00 am-5:00 pm
Thursday: 7:30 am-5:00 pm
Friday: 8:00 am-5:00 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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13.82 mi away

Schedule Appointment 713-816-6482
Monday: 7:30 am-12:00 pm , 1:00 pm-4:30 pm
Tuesday: 7:30 am-12:00 pm , 1:00 pm-4:30 pm
Wednesday: 7:30 am-12:00 pm , 1:00 pm-4:30 pm
Thursday: 7:30 am-12:00 pm , 1:00 pm-4:30 pm
Friday: 7:30 am-12:00 pm , 1:00 pm-4:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Northwest

1919 North Loop W,

Suite 125

Houston, TX 77008

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13.88 mi away

Schedule Appointment 713-861-9642
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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13.92 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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Memorial City Plaza 3 PSC

915 Gessner Rd,

Ste 175

Houston, TX 77024

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13.92 mi away

Schedule Appointment 713-725-8763
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 - 1631 North Loop MH

1631 North Loop W,

Ste 170

Houston, TX 77008

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13.93 mi away

Schedule Appointment 281-740-5945
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 - Kingsride

12385 Kingsride Avenue,

Houston, TX 77024

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13.99 mi away

Schedule Appointment 713-973-2746
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 - 9305 Pinecroft MH

9305 Pinecroft Dr,

Ste 103

The Woodlands, TX 77380

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14.67 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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14.82 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 - Woodlands Med Plaza 2 MH

920 Medical Plaza Dr,

Ste 160

Shenandoah, TX 77380

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14.84 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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14.9 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 - Deerbrook Professional

8901 Fm Road 1960,

Suite 203

Humble, TX 77338

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15.17 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
Quest Diagnostics - North Memorial Drive MH

18955 N Memorial Dr,

Ste 320

Humble, TX 77338

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15.88 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 - Fry Road

952 S Fry Rd,

Katy, TX 77450

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16.33 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
MRZ Medical - MRZ Medical

21386 Provincial Blvd,

Katy, TX 77450

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16.67 mi away

713-986-1467
Monday: 8:00 am-2:00 pm
Tuesday: 8:00 am-2:00 pm
Wednesday: 8:00 am-2:00 pm
Thursday: 8:00 am-2:00 pm
Friday: 8:00 am-2:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Remix Medical

7030 Bretshire Dr,

Houston, TX 77016

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16.88 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 - Katy Medical Arts

1331 W Grand Pkwy N,

Ste 110

Katy, TX 77493

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17.02 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 - MH Convenient Care Center

1431 Studemont St,

Houston, TX 77007

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17.23 mi away

Schedule Appointment 281-740-7989
Monday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Tuesday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Wednesday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Thursday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Friday: 8:00 am-12:30 pm , 1:30 pm-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - West Houston Medical Center

12121 Richmond Ave,

Suite 124

Houston, TX 77082

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17.41 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 - Katy PSC

23920 Katy Freeway,

Ste 465

Katy, TX 77494

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17.5 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 - Northpark - Employer Drug Testing Not Offered

23824 Hwy 59 North,

Suite 23816

Kingwood, TX 77339

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18.17 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 - Bellaire West Loop MH

6700 W. Loop S,

Ste 320

Bellaire, TX 77401

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19.81 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 - 7737 SW Freeway MH

7737 Southwest Fwy,

Ste 940

Houston, TX 77074

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19.98 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 - 7777 SW Freeway MH

7777 Southwest Fwy,

Ste 756

Houston, TX 77074

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20.03 mi away

Schedule Appointment 713-205-8555
Monday: 8:30 am-12:30 pm , 1:00 pm-5:00 pm
Tuesday: 8:30 am-12:30 pm , 1:00 pm-5:00 pm
Wednesday: 8:30 am-12:30 pm , 1:00 pm-5:00 pm
Thursday: 8:30 am-12:30 pm , 1:00 pm-5:00 pm
Friday: 8:30 am-12:30 pm , 1:00 pm-5:00 pm
Saturday: Closed
Sunday: Closed
MRZ Patient Service Center

7777 Southwest Fwy,

Ste 640

Houston, TX 77074

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20.03 mi away

713-986-1467
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-1:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Binz

1200 Binz St,

Ste 115

Houston, TX 77004

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20.27 mi away

Schedule Appointment 713-527-8058
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 - Wednesbury

8200 Wednesbury Lane,

Suite 450

Houston, TX 77074

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20.28 mi away

Schedule Appointment 713-271-3820
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: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Tx Med Ctr 15th Floor MH

6400 Fannin,

Ste 1570

Houston, TX 77030

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20.58 mi away

Schedule Appointment 346-266-8060
Monday: 8:00 am-1:00 pm , 2:00 pm-5:00 pm
Tuesday: 8:00 am-1:00 pm , 2:00 pm-5:00 pm
Wednesday: 8:00 am-1:00 pm , 2:00 pm-5:00 pm
Thursday: 8:00 am-1:00 pm , 2:00 pm-5:00 pm
Friday: 8:00 am-1:00 pm , 2:00 pm-5:00 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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20.61 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 - 6410 Fannin - Employer Drug Testing Not Offered

6410 Fannin Street,

Suite 220

Houston, TX 77030

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20.62 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 - 4533 Kingwood Drive MH

4533 Kingwood Dr,

Kingwood, TX 77345

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21.32 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 - Conroe

800 Riverwood Court,

Suite 103

Conroe, TX 77304

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21.78 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 - 7400 Fannin - Employer Drug Testing Not Offered

7400 Fannin Street,

Suite 180

Houston, TX 77054

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21.79 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-5:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - East Freeway

1140 Westmont Dr,

Suite 510

Houston, TX 77015

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24.71 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

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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.