PCR tests are far superior to rapid antigen tests—and now you can get them for home use.

By providing quantitative information about Covid-19 infection, PCR testing can help guide isolation and return to school or work policies.

In general, rapid antigen tests are less sensitive and therefore less likely to detect an infection compared with polymerase chain reaction (PCR) tests. PCR tests look for viral genetic material, ...

Antigen and PCR testing is still available at major pharmacies, like Walgreens, for example, but out of pocket costs could apply, depending on your insurance provider.

There are three different ways to test for COVID-19: PCR tests, antigen tests and antibody tests. Here are the differences.

PCR testing of dried blood spots demonstrated a high sensitivity to identify infants with congenital cytomegalovirus in a study conducted in Minnesota, the first state to mandate congenital CMV ...

Molecular testing is evolving rapidly, with an increasing number of tests available. For example, COVID-19 PCR tests are a type of molecular testing that scientists rapidly developed in response ...

The discrepancies between tests and the lengths of their positive results boil down to what each test looks for and how sensitive it is. PCR tests are highly sensitive and are good at detecting ...

Only a single PCR test is required by comparison. If you need testing more quickly, there are other programs offering free or low-cost tests, including community-based testing sites.

How long are you going to test positive for COVID after taking a test? Two experts weigh in, and advise on testing and isolation guidelines to follow.