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Quest Diagnostics

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Quest Diagnostics is the “Reference Lab for reference labs” in many countries across the globe. Serving more than half the hospitals in the United States, and providing healthcare connectivity solutions to over 250,000 physician and hospital accounts, we are the world’s leading provider of diagnostic testing, information and services that patients and doctors need to make better healthcare decisions. This includes expertise in cancer, cardiovascular disease, neurology and infectious disease. We have delivered innovative, ground-breaking tests to enhance patient care and transform information into knowledge and insights and we have delivered over 20 billion test results over the past decade.

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Diagnostics Services

Lab technicians with test tube

Quest Diagnostics is driven to discover and deliver diagnostic insights and innovations that help to improve human health. We offer a wide range of diagnostic services that benefit patients, healthcare providers, pharmaceutical and medical device companies, life insurance companies and employers.

 

 

 

 

 

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Facts & Figures

Quest headquarters

Quest Diagnostics is driven to discover and deliver diagnostic insights and innovations that help to improve human health. We offer a wide range of diagnostic services that benefit patients, healthcare providers, pharmaceutical and medical device companies, life insurance companies and employers.

 

 

 

 

 

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Clinical Solutions

Lab staff picking up one of several test tubes

Our dedicated clinical specialties can offer customized solutions to help with patient care and attract more patients to your institution.

 

 

 

 

 

 

 

 

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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. © 2024 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.