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Holiday schedule

Our Patient Service Centers will be closed on Friday, July 4, 2025 in observance of the Fourth of July holiday.  Have a healthy, happy holiday.

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Quest Diagnostics

Corporate responsibility

As the world’s leading provider of diagnostic information services, Quest Diagnostics is committed to working together to create a healthier world, one life at a time. We help people make the best decisions to improve health by providing high-quality and affordable diagnostic insights and services using our scale and outreach.

We're dedicated to leveraging insights from our database of billions of lab test results to help raise awareness of disease states and health concerns that impact our world. In addition, we collaborate with nonprofits to improve access to care through donated services, philanthropic giving, research, and thought leadership so that our shared resources can help everyone take action to improve their well-being.

 

To learn more about our efforts, please click the link below to see our 2024 Corporate Responsibility Report and click here to view additional resources.
2024 Report 2024 Highlights
2024 Corporate Responsability Report

To view past reports, visit our archive here.

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.