Add Yahoo as a preferred source to see more of our stories on Google. For any American wondering if they have Covid-19, there are two kinds of tests available: polymerase chain reaction (PCR) and ...

Add Yahoo as a preferred source to see more of our stories on Google. COVID-19 tests are in greater demand than ever, and new data about the Omicron variant can make picking and using different types ...

With fears of a sixth wave of the COVID-19 pandemic this winter, the government plans to offer free PCR tests to anyone who fears for their health, even if they show no symptoms.

Dr. Matt Binnicker, an expert in the diagnosis of infectious diseases, reviews scenarios where an at-home antigen test is a good option, and when to seek out a lab-based PCR. The omicron variant is ...

New COVID-19 restrictions for international travel and other activities are fueling consumer demand for highly accurate polymerase chain reaction, or PCR, tests with rapid turnaround times. Some ...

In an ideal world, the U.S. would be awash in COVID tests. Anyone exposed to the coronavirus could self-test or go to a lab or clinic if necessary. But right now, self-tests are in short supply in ...

Every American traveling abroad needs to take an antigen test to return to the United States. But the start of the trip is often even more cumbersome, as many other countries (nearly every one I have ...

COVID-19 tests are in greater demand than ever, and new data about the Omicron variant can make picking and using different types of tests confusing. Molecular tests for COVID-19, like the "RT-PCR" ...