Polymerase chain reaction (PCR) and rapid (antigen) tests for COVID-19 both involve taking a swab. Results for a PCR test take longer, as it needs to go to a laboratory. It is more costly but tends to ...

Two tests are apparently better than one. Starting today, anyone looking to take a rapid COVID-19 test at any of the 27 Miami-Dade County-run testing sites will have to also take a PCR test, ...

As the various subvariants of omicron continue to circulate in the U.S., rapid at-home tests remain an important tool for protecting yourself and others. Home tests are appealing because they allow ...

Antigen tests can identify the presence of antigens within the body, which are substances that cause immune responses, such as the release of antibodies. The immune system, and antibodies specifically ...

The antigen test uses a novel fluorescent probe for optical detection on the chip. This illustration shows the full antigen-capture complex assembled as a sandwich assay on a magnetic bead; a linker ...

The announcement came last week with the White House signaling a billion-dollar investment in at-home rapid coronavirus tests. It also said 20,000 pharmacies across the country would offer free ...

WHO noted that prequalified tests can now be prioritized in pooled procurement mechanisms, which help lower prices, stabilize ...

As rapid coronavirus tests are becoming more widely available, delivering results in minutes for patients in doctor's offices, nursing homes, schools and even the White House, officials warn of a ...

For most people, having an at-home COVID test or two handy is just a normal part of life these days. But, if you happen to take a test and get a positive you weren’t expecting, it’s more than ...