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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 - Seven Square Park

9110 Philadelphia Road,

Suite 212

Baltimore, MD 21237

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1.24 mi away

Schedule Appointment 410-686-9340
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 - Whitemarsh - Employer Drug Testing Not Offered

8114 Sandpiper Cir,

Suite 112

Nottingham, MD 21236

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2.48 mi away

Schedule Appointment 410-931-6757
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-11:00 am
Sunday: Closed
Quest Diagnostics - Employer Drug Screens Not Offered - Inside Harford Rd Safeway Store

4401 Harford Rd,

Baltimore, MD 21214

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4.1 mi away

Schedule Appointment 410-444-2020
Monday: 6:30 am-12:00 pm , 1:00 pm-2:30 pm
Tuesday: 6:30 am-12:00 pm , 1:00 pm-2:30 pm
Wednesday: 6:30 am-12:00 pm , 1:00 pm-2:30 pm
Thursday: 6:30 am-12:00 pm , 1:00 pm-2:30 pm
Friday: 6:30 am-12:00 pm , 1:00 pm-2:30 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Dundalk

7544 Holabird Ave,

Suite A1

Dundalk, MD 21222

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4.74 mi away

Schedule Appointment 443-591-1757
Monday: 7:00 am-11:00 am , 12:00 pm-2:30 pm
Tuesday: 7:00 am-11:00 am , 12:00 pm-2:30 pm
Wednesday: 7:00 am-11:00 am , 12:00 pm-2:30 pm
Thursday: 7:00 am-11:00 am , 12:00 pm-2:30 pm
Friday: 7:00 am-11:00 am , 12:00 pm-2:30 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Inside Safeway Store Carney

8858 Waltham Woods Rd,

Parkville, MD 21234

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5.0 mi away

Schedule Appointment 410-882-2525
Monday: 7:00 am-12:00 pm , 12:30 pm-3:30 pm
Tuesday: 7:00 am-12:00 pm , 12:30 pm-3:30 pm
Wednesday: 7:00 am-12:00 pm , 12:30 pm-3:30 pm
Thursday: 7:00 am-12:00 pm , 12:30 pm-3:30 pm
Friday: 7:00 am-12:00 pm , 12:30 pm-3:30 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Towson Medical Associates - Towson Medical Associates

7801 York Rd,

Ste 102

Towson, MD 21204

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6.82 mi away

410-769-4965
Monday: 8:00 am-4:15 pm
Tuesday: 8:00 am-4:15 pm
Wednesday: 8:00 am-4:15 pm
Thursday: 8:00 am-4:15 pm
Friday: 8:00 am-4:15 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Fairmount Avenue - Employer Drug Testing Not Offered

515 Fairmount Ave,

Suite 403

Towson, MD 21286

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6.93 mi away

Schedule Appointment 410-296-1627
Monday: 7:30 am-5:30 pm
Tuesday: 7:30 am-6:00 pm
Wednesday: 7:30 am-6:00 pm
Thursday: 7:30 am-5:30 pm
Friday: 7:30 am-5:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Lutherville

1205 York Road,

Suite 15A

Lutherville, MD 21093

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8.3 mi away

Schedule Appointment 443-682-2094
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-11:00 am
Sunday: Closed
Quest Diagnostics - Garwyn Medical

2300 Garrison Blvd,

Suite 206

Baltimore, MD 21216

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9.86 mi away

Schedule Appointment 410-233-7507
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
Quest Diagnostics - Catonsville: Maiden Choice - Employer Drug Testing Not Offered

724 Maiden Choice Lane,

Suite 101

Catonsville, MD 21228

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12.24 mi away

Schedule Appointment 410-788-1388
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: Closed
Quest Diagnostics - Naylors Court - Employer Drug Testing Not Offered

4000 Old Court Rd,

Suite 102

Pikesville, MD 21208

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12.87 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 - Woodholme - Employer Drug Testing Not Offered

1838 Greene Tree Rd,

Ste 280

Pikesville, MD 21208

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13.34 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
Quest Diagnostics - Catonsville

2 E Rolling Crossroads,

Ste 51

Catonsville, MD 21228

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13.95 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 - Old Emmorton Commons

2227 Old Emmorton Rd,

Suite 215

Bel Air, MD 21015

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14.09 mi away

Schedule Appointment 410-569-5341
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: Closed
Quest Diagnostics - Owings Mills

23 Crossroads Dr,

Suite 120

Owings Mills, MD 21117

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14.31 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
Owings Mills Internal Medicine - St. Joseph Medical Ctr.

5 Park Center Ct,

Ste 203

Owings Mills, MD 21117

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14.39 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 - Bel Air MacPhail Rd

620 W MacPhail Road,

Suite 103

Bel Air, MD 21014

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14.75 mi away

Schedule Appointment 410-879-3434
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-11:00 am
Sunday: Closed
Quest Diagnostics - Hospital Drive

200 Hospital Drive,

Suite 103

Glen Burnie, MD 21061

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15.38 mi away

Schedule Appointment 410-768-7770
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: 6:30 am-10:30 am
Sunday: Closed
Quest Diagnostics - Inside Hanover Safeway Store

7643 Arundel Mills Blvd,

Hanover, MD 21076

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17.73 mi away

Schedule Appointment 410-799-7799
Monday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Tuesday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Wednesday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Thursday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Friday: 7:00 am-11:30 am , 12:30 pm-4:00 pm
Saturday: Closed
Sunday: Closed
Quest Diagnostics - Ellicott City

9055 Chevrolet Drive,

Suite 101

Ellicott City, MD 21043

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18.09 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
Quest Diagnostics - Main Street - Employer Drug Testing Not Offered

750 Main St,

Suite 306

Reisterstown, MD 21136

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18.96 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
Health Park at Hereford - Health Park at Hereford

14A Mount Carmel Rd,

Parkton, MD 21120

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19.66 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 - Columbia Medical Center

11055 Little Patuxent Pkwy,

Suite 202

Columbia, MD 21044

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22.39 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
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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22.43 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 - Inside Columbia Safeway Store - Employer Drug Testing Not Offered

5485 Harpers Farm Rd,

Ste A

Columbia, MD 21044

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22.44 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 - Inside Gambrills Safeway Store

2644 Chapel Lake Dr,

Gambrills, MD 21054

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22.89 mi away

Schedule Appointment 410-451-4040
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 - Bestgate

820 Bestgate Rd,

Ste 1D

Annapolis, MD 21401

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23.97 mi away

Schedule Appointment 410-573-4891
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: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Eldersburg Sykesville

1532 Liberty Road,

Suite 101

Eldersburg, MD 21784

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24.04 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

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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.