Costco is now offering at-home testing for COVID-19. The retailer's new saliva test can only be bought online. Because it's a spit test, you don't have to worry about a long nasal swab. The process is ...

CHICAGO, Ill. -- Scientists are continuing to develop new COVID-19 testing methods. Everything from throat swabs and saliva tests to breathalyzers are potential options. The federal government has ...

Most existing COVID-19 tests "rely on the same principle, which is that you have accumulated a detectable amount of viral material, for example, in your nose," says study lead author Frank Zhang, who ...

As COVID-19 variant EG.5, nicknamed “Eris,” continues to spread across the U.S., it’s important to be prepared ahead of a possible infection by stocking up on the best at-home COVID tests. So once ...

WASHINGTON -- Rutgers University researchers have received U.S. government clearance for the first saliva test to help diagnose COVID-19, a new approach that could help expand testing options and ...

The Food and Drug Administration has granted emergency use authorization for a COVID-19 test that uses breath samples — the first of its kind to get the agency’s green light. The device, called the ...