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Outage notice:

Due to the global information outage that occurred this morning, Quest is taking swift action to respond, recover and restore our operations. Our Patient Services are operating with reduced capacity so you may experience longer wait and service times. Our Customer Contact teams are currently unavailable. We appreciate your patience as we work toward returning to normal operations. 


About us

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 by helping people make the best decisions to improve health by providing high-quality and affordable diagnostic testing insights and services using our scale and extensive reach

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
  • Solving health inequities and working collaboratively to make communities healthier