There are two main approaches to testing for Covid-19 and they search for different things. The PCR test takes a swab from the back of the nose and throat and looks for presence of the virus itself.

A high rate of positive antigen tests subsequently not confirmed by PCR tests in reported data from asymptomatic close contacts suggests anomalies in this part of the HSE testing programme, according ...

The debate around what role rapid Covid-19 testing should have on the speed at which society opens up moved up a gear on Wednesday. Hundreds of workers from the aviation sector took their message to ...

Two types of COVID-19 tests, the rapid antigen test and the polymerase chain reaction (PCR) test, are available in the United States. The PCR typically relies on lab testing and is still considered ...

A 20-second Covid test developed in Israel delivers results that are almost as good as the gold-standard PCR test – but at a fraction of the cost. Like any over-the-counter antigen test, it uses a ...

Researchers have built an RT-PCR platform that gives results in 23 minutes that match the longer laboratory-based tests -- faster than other PCR tests on the market. It can be adapted to test for a ...