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, ...

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 ...

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 ...

Researchers from Johns Hopkins Medicine and collaborating institutions report that a rapid antigen test for SARS-CoV-2—the virus that causes COVID-19—proved highly accurate when compared to the ...

Editor's note, March 7, 2023: The recommendations in this article are out of date and will not be updated going forward. Should you feel sick, we recommend talking to a health care professional.

With Omicron surging in the United States, many people are taking COVID-19 tests to see whether they test positive. Most people will take either a rapid antigen or PCR test. Though the PCR test is ...

This study examined changes in prostate disease screening (prostatic-specific antigen [PSA] testing), prostate biopsy testing, and prostate cancer diagnoses during the COVID-19 pandemic through ...