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, ...

How do rapid antigen COVID-19 tests work? Why did the US government just pledge to buy 280 million of them? And is that even enough to help curb the spread of the virus? As part of President Biden’s ...

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 ...

People with diabetes have been urged to take extra caution during the COVID-19 pandemic. If you have diabetes, you’ve likely heard that COVID-19 is generally considered to be more dangerous for people ...

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 ...

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 ...