No COVID-19 test is 100% reliable. The individual accuracy depends on the make of the test used and many other factors. 

The rapid antigen tests we use have met the regulatory standards for performance and safety. Please follow the instructions that came with your test carefully to make sure that you get the most accurate result possible.

The specific accuracy of your test will depend on the manufacturer it was purchased from. We’d recommend consulting the leaflet that came with your test for more information.