Quest Diagnostics is rolling out an antibody test consumers can order online before ever going to the doctor's office.

The US Food and Drug Administration (FDA) has granted breakthrough device designation for Quest Diagnostics’ Haystack minimal ...

Quest Diagnostics on Thursday announced it has launched a new, FDA-authorized at-home COVID-19 test kit. Quest Diagnostics provided this photo of its new at-home test kit.

Quest will offer the first FDA-approved blood test to help detect Alzheimer’s-related amyloid pathology in patients with cognitive decline.

Quest Diagnostics unveiled a first-to-market blood test for consumers that helps assess the potential risk of developing Alzheimer’s disease.

GRAIL's Galleri Test Now Directly Available to Physicians in the U.S. Through Collaboration With Quest Diagnostics, Delivering a More Streamlined Provider and Patient Experience ...

Quest Diagnostics (NYSE: DGX), a leader in diagnostic information services, including advanced diagnostics for brain health, today announced the launch of a new laboratory blood test designed to ...

Quest Diagnostics is selling a direct-to-consumer antibody test that the company says will make it easy for people to check whether they may have been exposed to the coronavirus. After ordering ...

Quest Diagnostics (DGX) announced that the U.S. FDA has granted Breakthrough Device Designation for the company’s Haystack MRD test for ...

In an oral presentation at the 2025 AAN Annual Meeting, Quest scientists presented data suggesting the test can accurately assess Alzheimer's disease pathology with greater than 90% sensitivity ...