Taking a COVID-19 test at home seems simple enough: If you get a line, you're positive for the coronavirus. But what if your results aren't so obvious? For instance, if you only get a very faint line ...

Add Yahoo as a preferred source to see more of our stories on Google. Home pregnancy test results are only accurate within the first 10 minutes, so read results promptly to avoid misleading lines.

When you take a home pregnancy test, you'll see lines indicating your results. One line confirms the test is working (control line), and a second line shows if you're pregnant (test line). Any second ...

For instance, if you only get a very faint line, it might be hard to know whether or not that means your results are positive. I know how that feels firsthand. After more than two years of evading ...