Our purpose:
The Quest Way
Taken together, Purpose, Strategy, and Culture comprise The Quest Way, our fresh approach to how we work together to achieve our goals as a company.
Every year, Quest serves 1 in 3 adult Americans and half the physicians and hospitals in the US, and our nearly 50,000 employees understand that, in the right hands and with the right context, our diagnostic insights can inspire actions that transform lives.
PURPOSE is why we exist in the world, our unique reason for being
Working together to create a healthier world, one life at a time
STRATEGY is how we grow. We connect consumers and clinicians to innovative, affordable, and actionable insights that illuminate the path to better health
CULTURE, or how we work, is powered by the 5Cs
Our promise: Action from Insight
As the world’s leading provider of diagnostic information services, Quest Diagnostics and all our employees are committed to The Quest Way, sharing our purpose, strategy, and culture—through working every day to uncover important insights about your health. We’re dedicated to providing actionable results that empower you with the information you need to make your healthcare decisions count through:
- Discovering new ways to screen for, prevent, diagnose, and monitor disease
- Making it faster and easier for consumers, patients, doctors, and hospitals to access lab tests and data when they need it
- Ensuring patients obtain the services and care they need when they need it
- Working collaboratively to make communities healthier through increasing access and affordability to testing.
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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. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.