With a market cap of $20 billion, Quest Diagnostics Incorporated (DGX) is a leading provider of diagnostic testing services ...

--Quest Diagnostics, a leader in diagnostic information services, today announced that it has completed its previously announced acquisition of select laboratory assets from OhioHealth, a ...

Quest Diagnostics will work on a blood test for cancer risk it says may help identify people who could benefit from more ...

Quest Diagnostics, a provider of diagnostic laboratory testing services, has opened a new location in Danville. The company ...

Quest Diagnostics, a laboratory services business, has completed its purchase of select laboratory assets from Columbus-based OhioHealth.

Quest plans to refine, develop and validate the technology and is aiming to launch the test in North America next year.

Berger Hospital in Circleville announced it will begin a phased reopening after a building-wide evacuation on Wednesday ...