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 ...

Results are detected within just a few minutes, the agency said. The Food and Drug Administration has granted emergency use authorization for a COVID-19 test that uses breath samples -- the first of ...

Respiratory viruses are usually most active from October through March, health officials say.

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 ...