Get to Know Us

Join us on our quest to discover and deliver innovations to improve health.
petri dish

What We Do

We are the world's leading provider of diagnostic testing, services and information that patients and doctors rely on to make better healthcare decisions. Each day, we impact the lives of millions. Our continuous pursuit to discover and innovate enables us to create new solutions every day, many of which are now industry standards of care. 

a lot of people on headsets

How We Do It

Quest Diagnostics employs nearly 45,000 individuals ranging across hundreds of different locations, departments, functions and roles. No matter what role one plays at Quest, each employee is committed to the same goal: improving human health. With a staff of approximately 900 MDs and PhDs, an extensive network of convenient patient locations, and a broad range of diagnostic products, we perform testing for approximately 550,000 patients every day, as well as provide information and services for physicians, employers, and insurers. 

You Can Do It, Tooexercising girl smiling

Whether you are a lab assistant or technician, a medical expert, or work in our corporate offices, you play a vital role in helping us achieve our goals to improve human health and shape the healthcare industry.

Your Quest Career. Seek it Out.

Our Locations

We have operations and a variety of employment opportunities in nearly every state of the U.S., as well as India, UK, Ireland, Mexico and more.


Empowering Better Health with Diagnostic Insights