Abbott, the manufacturer of the BinaxNow kits, from six months to a year in May, after review from the Food and Drug Administration.
Rapid tests come with a high risk of giving a false negative result.
Susan Butler-Wu, who directs clinical testing for infectious diseases at the University of Southern California, told Insider that if you're using an oral swab.
The tests also work best with serial testing, or testing over multiple days.
But you need to know when and how to use these tests.
It probably is just a cold, after all.