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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 - Waynesboro

626 E Main St,

Waynesboro Shopping Mall

Waynesboro, PA 17268

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6.8 mi away

Schedule Appointment 717-765-4592
Monday: 7:00 am-11:30 am , 12:00 pm-2:30 pm
Tuesday: 7:00 am-11:30 am , 12:00 pm-2:30 pm
Wednesday: 7:00 am-11:30 am , 12:00 pm-2:30 pm
Thursday: 7:00 am-11:30 am , 12:00 pm-2:30 pm
Friday: 7:00 am-11:30 am , 12:00 pm-2:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Hagerstown MD

11110 Medical Campus Rd,

Ste 244

Hagerstown, MD 21742

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7.02 mi away

Schedule Appointment 240-850-3252
Monday: 7:00 am-12:30 pm , 1:00 pm-3:00 pm
Tuesday: 7:00 am-12:30 pm , 1:00 pm-3:00 pm
Wednesday: 7:00 am-12:30 pm , 1:00 pm-3:00 pm
Thursday: 7:00 am-12:30 pm , 1:00 pm-3:00 pm
Friday: 7:00 am-12:30 pm , 1:00 pm-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Aspen Ridge

165 Thomas Johnson Dr,

Liberty Professional Bldg, Suite H

Frederick, MD 21702

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16.5 mi away

Schedule Appointment 301-662-9298
Monday: 6:30 am-3:30 pm
Tuesday: 6:30 am-3:30 pm
Wednesday: 6:30 am-3:30 pm
Thursday: 6:30 am-3:30 pm
Friday: 6:30 am-3:30 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Chambersburg Norland

966 Norland Ave,

Chambersburg, PA 17201

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20.32 mi away

Schedule Appointment 717-264-5020
Monday: 6:30 am-3:00 pm
Tuesday: 6:30 am-3:00 pm
Wednesday: 6:30 am-3:00 pm
Thursday: 6:30 am-3:00 pm
Friday: 6:30 am-3:00 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Inside Mount Airy Safeway Store - Employer Drug Testing Not Offered

337 E Ridgeville Blvd,

Mount Airy, MD 21771

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28.88 mi away

Schedule Appointment 301-829-5555
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 - Westminster - Magna Way

41 Magna Way,

Ste 130

Westminster, MD 21158

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30.07 mi away

Schedule Appointment 475-988-5902
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
Quest Diagnostics - Westminster

222 Washington Road,

Westminster, MD 21157

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30.78 mi away

Schedule Appointment 410-876-1918
Monday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Tuesday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Wednesday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Thursday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Friday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Germantown

20528 Boland Farm Road,

Suite 205

Germantown, MD 20876

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35.55 mi away

Schedule Appointment 301-972-2097
Monday: 7:30 am-12:00 pm , 1:00 pm-4:00 pm
Tuesday: 7:30 am-12:00 pm , 1:00 pm-4:00 pm
Wednesday: 7:30 am-12:00 pm , 1:00 pm-4:00 pm
Thursday: 7:30 am-12:00 pm , 1:00 pm-4:00 pm
Friday: 7:30 am-12:00 pm , 1:00 pm-4:00 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Germantown Emergency Room - Emergency Room GER SGAH

19731 Germantown Rd,

Germantown, MD 20874

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36.05 mi away

703-802-6900
Monday: 24 hrs
Tuesday: 24 hrs
Wednesday: 24 hrs
Thursday: 24 hrs
Friday: 24 hrs
Saturday: 24 hrs
Sunday: 24 hrs
Quest Diagnostics - Eldersburg Sykesville

1532 Liberty Road,

Suite 101

Eldersburg, MD 21784

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36.95 mi away

Schedule Appointment 410-549-2170
Monday: 7:30 am-12:00 pm , 12:30 pm-4:00 pm
Tuesday: 7:30 am-12:00 pm , 12:30 pm-4:00 pm
Wednesday: 7:30 am-12:00 pm , 12:30 pm-4:00 pm
Thursday: 7:30 am-12:00 pm , 12:30 pm-4:00 pm
Friday: 7:30 am-12:00 pm , 12:30 pm-4:00 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Leesburg

521 E. Market St,

Leesburg, VA 20176

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37.49 mi away

Schedule Appointment 703-777-7887
Monday: 7:30 am-12:00 pm , 1:00 pm-3:30 pm
Tuesday: 7:30 am-12:00 pm , 1:00 pm-3:30 pm
Wednesday: 7:30 am-12:00 pm , 1:00 pm-3:30 pm
Thursday: 7:30 am-12:00 pm , 1:00 pm-3:30 pm
Friday: 7:30 am-12:00 pm , 1:00 pm-3:30 pm
Saturday: 7:00 am-10:00 am
Sunday: Closed
Quest Diagnostics - Inside Gaithersburg Safeway Store - Employer Drug Testing Not Offered

20211 Goshen Rd,

Gaithersburg, MD 20879

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37.56 mi away

Schedule Appointment 202-339-1132
Monday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Tuesday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Wednesday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Thursday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Friday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Saturday: 8:00 am-1:00 pm
Sunday: Closed
Quest Diagnostics - Lansdowne

19415 Deerfield Avenue,

Suite 115B

Leesburg, VA 20176

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39.73 mi away

Schedule Appointment 703-729-6732
Monday: 7:30 am-11:30 am , 12:30 pm-4:00 pm
Tuesday: 7:30 am-11:30 am , 12:30 pm-4:00 pm
Wednesday: 7:30 am-11:30 am , 12:30 pm-4:00 pm
Thursday: 7:30 am-11:30 am , 12:30 pm-4:00 pm
Friday: 7:30 am-11:30 am , 12:30 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Carlisle

40 Brookwood Ave,

Carlisle, PA 17015

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41.05 mi away

Schedule Appointment 717-258-3165
Monday: 6:00 am-3:30 pm
Tuesday: 6:00 am-3:30 pm
Wednesday: 6:00 am-3:30 pm
Thursday: 6:00 am-3:30 pm
Friday: 6:00 am-3:30 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Main Street - Employer Drug Testing Not Offered

750 Main St,

Suite 306

Reisterstown, MD 21136

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41.41 mi away

Schedule Appointment 410-833-0961
Monday: 8:00 am-12:00 pm , 12:30 pm-4:00 pm
Tuesday: 8:00 am-12:00 pm , 12:30 pm-4:00 pm
Wednesday: 8:00 am-12:00 pm , 12:30 pm-4:00 pm
Thursday: 8:00 am-12:00 pm , 12:30 pm-4:00 pm
Friday: 8:00 am-12:00 pm , 12:30 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Rockville Shady Grove

15225 Shady Grove Road,

Suite 207

Rockville, MD 20850

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42.41 mi away

Schedule Appointment 202-317-2024
Monday: 7:00 am-12:00 pm , 1:00 pm-3:00 pm
Tuesday: 7:00 am-12:00 pm , 1:00 pm-3:00 pm
Wednesday: 7:00 am-12:00 pm , 1:00 pm-3:00 pm
Thursday: 7:00 am-12:00 pm , 1:00 pm-3:00 pm
Friday: 7:00 am-12:00 pm , 1:00 pm-3:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Rockville Medical Center Drive

9707 Medical Center Drive,

Suite 120

Rockville, MD 20850

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42.66 mi away

Schedule Appointment 301-340-0290
Monday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Tuesday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Wednesday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Thursday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Friday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Sterling

14 Pidgeon Hill Dr,

Ste 130

Sterling, VA 20165

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43.1 mi away

Schedule Appointment 703-444-4844
Monday: 7:30 am-3:30 pm
Tuesday: 7:30 am-3:30 pm
Wednesday: 7:30 am-3:30 pm
Thursday: 7:30 am-3:30 pm
Friday: 7:30 am-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Olney

18111 Prince Philip Drive,

Suite T12

Olney, MD 20832

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43.41 mi away

Schedule Appointment 301-774-3111
Monday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Tuesday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Wednesday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Thursday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Friday: 7:00 am-12:00 pm , 1:00 pm-3:30 pm
Saturday: 8:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Ashburn

21785 Filigree Court,

Suite 204

Ashburn, VA 20147

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44.45 mi away

Schedule Appointment 571-223-0234
Monday: 7:30 am-3:30 pm
Tuesday: 7:30 am-3:30 pm
Wednesday: 7:30 am-3:30 pm
Thursday: 7:30 am-3:30 pm
Friday: 7:30 am-3:30 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Winchester Amherst Street - Employer Drug Testing Not Offered

812 Amherst St,

Ste 100

Winchester, VA 22601

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45.9 mi away

Schedule Appointment 540-686-7217
Monday: 7:00 am-12:30 pm , 1:30 pm-4:00 pm
Tuesday: 7:00 am-12:30 pm , 1:30 pm-4:00 pm
Wednesday: 7:00 am-12:30 pm , 1:30 pm-4:00 pm
Thursday: 7:00 am-12:30 pm , 1:30 pm-4:00 pm
Friday: 7:00 am-12:30 pm , 1:30 pm-4:00 pm
Saturday: 7:00 am-10:00 am
Sunday: Closed
Owings Mills Internal Medicine - St. Joseph Medical Ctr.

5 Park Center Ct,

Ste 203

Owings Mills, MD 21117

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45.99 mi away

410-363-4900
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 - Owings Mills

23 Crossroads Dr,

Suite 120

Owings Mills, MD 21117

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46.07 mi away

Schedule Appointment 410-581-9812
Monday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Tuesday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Wednesday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Thursday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Friday: 7:00 am-12:00 pm , 12:30 pm-3:00 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Inside Columbia Safeway Store - Employer Drug Testing Not Offered

5485 Harpers Farm Rd,

Ste A

Columbia, MD 21044

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46.1 mi away

Schedule Appointment 410-740-0444
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
Quest Diagnostics - Columbia Medical Center

11055 Little Patuxent Pkwy,

Suite 202

Columbia, MD 21044

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46.69 mi away

Schedule Appointment 410-740-0063
Monday: 6:30 am-4:30 pm
Tuesday: 6:30 am-4:30 pm
Wednesday: 6:30 am-4:30 pm
Thursday: 6:30 am-4:30 pm
Friday: 6:30 am-4:30 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Ellicott City

9055 Chevrolet Drive,

Suite 101

Ellicott City, MD 21043

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46.7 mi away

Schedule Appointment 410-750-6485
Monday: 7:30 am-12:00 pm , 12:30 pm-4:00 pm
Tuesday: 7:30 am-12:00 pm , 12:30 pm-4:00 pm
Wednesday: 7:30 am-12:00 pm , 12:30 pm-4:00 pm
Thursday: 7:30 am-12:00 pm , 12:30 pm-4:00 pm
Friday: 7:30 am-12:00 pm , 12:30 pm-4:00 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
JHH - The Medical Pavilion at Howard Co - JHH - The Medical Pavilion at Howard Co

10710 Charter Drive,

Suite G040

Columbia, MD 21044

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46.84 mi away

443-546-1110
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
Quest Diagnostics - York PA White Street

2159 White St,

Ste 16

York, PA 17404

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46.89 mi away

Schedule Appointment 717-900-8645
Monday: 6:30 am-3:30 pm
Tuesday: 6:30 am-3:30 pm
Wednesday: 6:30 am-3:30 pm
Thursday: 6:30 am-3:30 pm
Friday: 6:30 am-3:30 pm
Saturday: 7:00 am-12:00 pm
Sunday: Closed
Quest Diagnostics - Woodholme - Employer Drug Testing Not Offered

1838 Greene Tree Rd,

Ste 280

Pikesville, MD 21208

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47.06 mi away

Schedule Appointment 410-653-3635
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: 7:00 am-11:00 am
Sunday: Closed
Health Park at Hereford - Health Park at Hereford

14A Mount Carmel Rd,

Parkton, MD 21120

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47.43 mi away

410-337-4433
Monday: 7:15 am-2:30 pm
Tuesday: 7:15 am-2:30 pm
Wednesday: 7:15 am-2:30 pm
Thursday: 7:15 am-2:30 pm
Friday: 7:15 am-2:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Naylors Court - Employer Drug Testing Not Offered

4000 Old Court Rd,

Suite 102

Pikesville, MD 21208

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47.66 mi away

Schedule Appointment 410-653-1030
Monday: 7:00 am-3:00 pm
Tuesday: 7:00 am-3:00 pm
Wednesday: 7:00 am-3:00 pm
Thursday: 7:00 am-3:00 pm
Friday: 7:00 am-3:00 pm
Saturday: Closed
Sunday: 7:00 am-11:00 am
Quest Diagnostics - Herndon

104 Elden St,

Ste 16

Herndon, VA 20170

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48.33 mi away

Schedule Appointment 703-435-3344
Monday: 7:00 am-3:30 pm
Tuesday: 7:00 am-3:30 pm
Wednesday: 7:00 am-3:30 pm
Thursday: 7:00 am-3:30 pm
Friday: 7:00 am-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Catonsville

2 E Rolling Crossroads,

Ste 51

Catonsville, MD 21228

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48.8 mi away

Schedule Appointment 410-744-5654
Monday: 7:30 am-12:00 pm , 12:30 pm-3:30 pm
Tuesday: 7:30 am-12:00 pm , 12:30 pm-3:30 pm
Wednesday: 7:30 am-12:00 pm , 12:30 pm-3:30 pm
Thursday: 7:30 am-12:00 pm , 12:30 pm-3:30 pm
Friday: 7:30 am-12:00 pm , 12:30 pm-3:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Bethesda

6410 Rockledge Dr,

Suite 105

Bethesda, MD 20817

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48.81 mi away

Schedule Appointment 301-564-0150
Monday: 8:00 am-12:00 pm , 1:00 pm-4:00 pm
Tuesday: 8:00 am-12:00 pm , 1:00 pm-4:00 pm
Wednesday: 8:00 am-12:00 pm , 1:00 pm-4:00 pm
Thursday: 8:00 am-12:00 pm , 1:00 pm-4:00 pm
Friday: 8:00 am-12:00 pm , 1:00 pm-4:00 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.