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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 - Ephrata

112 N Reading Rd,

Ephrata, PA 17522

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5.92 mi away

Schedule Appointment 717-738-0787
Monday: 6:30 am-11:30 am , 12:00 pm-2:30 pm
Tuesday: 6:30 am-11:30 am , 12:00 pm-2:30 pm
Wednesday: 6:30 am-11:30 am , 12:00 pm-2:30 pm
Thursday: 6:30 am-11:30 am , 12:00 pm-2:30 pm
Friday: 6:30 am-11:30 am , 12:00 pm-2:30 pm
Saturday: 7:00 am-11:00 am
Sunday: Closed
Quest Diagnostics - Lancaster

215 Granite Run Dr,

Lancaster, PA 17601

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7.23 mi away

Schedule Appointment 717-569-8539
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

Our focus on your safety

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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Our company

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.