SAN FRANCISCO -- The recent outbreak of the omicron variant has many people running for the store for an over-the-counter rapid test. But simply taking the test once isn't enough to tell you if you ...

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 ...

Lateral flow immunoassays, also called immunochromatography strips, are straightforward devices used to detect the absence or presence of a target analyte. Target analytes range from pathogens to ...