These days the world of at-home testing for COVID-19 is confusing. How often do I need to test to see if I'm really positive — or negative? Does a faint line mean I'm less contagious?

Fact checked by Marley Hall Medically reviewed by Femi Aremu, PharmD If you're testing for COVID-19, you'll want to know what a positive test looks like—and what it means if you get a faint line ...

I know how it feels to get a perplexing result firsthand. When I first tested positive at home on a rapid antigen test during the summer of 2022, the line was so faint that it didn't even show up ...