While PCR testing remains the gold standard when it comes to Covid-19, antigen testing could play a key role in the reopening of the country. As businesses prepare to open their doors on a phased basis over the coming weeks, many will be considering rapid antigen testing as way to help keep staff and customers safe. The big advantage is speed, with tests results back within 15 minutes following a quick nasal swab. Antigen tests are also much cheaper than PCR tests, usually costing between €5 and €10 per test, compared to the PCR test which costs around €150. However, it is important to note that antigen tests are less reliable.