5124 Hill Rd E,
Lakeport, CA 95453
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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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18.79 mi away
Monday:
6:30 am-10:30 am , 11:30 am-2:30 pm
Tuesday:
6:30 am-10:30 am , 11:30 am-2:30 pm
Wednesday:
6:30 am-10:30 am , 11:30 am-2:30 pm
Thursday:
6:30 am-10:30 am , 11:30 am-2:30 pm
Friday:
6:30 am-10:30 am , 11:30 am-2:30 pm
Saturday:
Closed
Sunday:
Closed
41.98 mi away
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
57.29 mi away
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:
Closed
Sunday:
Closed
57.45 mi away
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:
7:30 am-11:30 am
Sunday:
Closed
Quest Diagnostics - Colusa Bridge St
1025 Bridge St,
Colusa, CA 95932
Get Directions66.54 mi away
Monday:
7:00 am-11:30 am , 12:30 pm-3:30 pm
Tuesday:
7:00 am-11:30 am , 12:30 pm-3:30 pm
Wednesday:
7:00 am-11:30 am , 12:30 pm-3:30 pm
Thursday:
7:00 am-11:30 am , 12:30 pm-3:30 pm
Friday:
7:00 am-11:30 am , 12:30 pm-3:30 pm
Saturday:
Closed
Sunday:
Closed
Quest Diagnostics - Orland Cortina Drive
1361 Cortina Dr,
Orland, CA 95963
Get Directions69.08 mi away
Monday:
6:00 am-10:00 am , 10:30 am-12:00 pm
Tuesday:
6:00 am-10:00 am , 10:30 am-12:00 pm
Wednesday:
6:00 am-10:00 am , 10:30 am-12:00 pm
Thursday:
6:00 am-10:00 am , 10:30 am-12:00 pm
Friday:
6:00 am-10:00 am , 10:30 am-12:00 pm
Saturday:
Closed
Sunday:
Closed
70.42 mi away
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:
Closed
Sunday:
Closed
Quest Diagnostics - Sonoma Perkins - Employer Drug Testing Not Offered
386 PERKINS ST,
SONOMA, CA 95476
Get Directions73.01 mi away
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
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Our safety precautions help ensure your confidence and comfort while visiting our Patient Service Centers to get the testing you need, today and every day.
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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.