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?

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 ...

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 ...

If you are positive, a line appears on the test kit. However, you may have noticed that line can be bold or faint. Does that mean anything? We went to the experts to Verify.