At-home COVID-19 tests have become commonplace for many households, but knowing when exactly to take a rapid test — or when to throw old ones out — isn't always straightforward. Here's what health ...

If you've ever taken an at-home diagnostic test for COVID-19, you can partially credit the technology to the Johns Hopkins University Center for Innovative Diagnostics for Infectious Diseases (CIDID).

Over the last couple of decades, rapid diagnostic tests have emerged as a vital tool in the fight to control malaria. The relatively inexpensive test strips, which work in just minutes, have diagnosed ...