When you should be using your at-home COVID tests
Toby Scott/SOPA Images/LightRocket via Getty Images(NEW YORK) -- Millions of Americans have purchased rapid COVID-19 tests online or at local stores and signed up to receive test kits through a free government program. Unlike conventional, lab-processed PCR tests, which may detect infection earlier in the course of illness but can take days to get a result, at-home rapid tests can let you know if you are likely contagious in less than 15 minutes. Many specialists see them as a crucial tool in the off-ramp to the pandemic -- assuming Americans know how and when to use them. Public health specia...