People in England have been cautioned against using coronavirus antibody tests being sold by some retailers.
NHS England’s medical director Prof Stephen Powis said experts were “evaluating” antibody tests, which show if someone has already had the virus.
Such tests are not yet available through the NHS, but some are being sold commercially.
“I would caution against using any tests… without knowing quite how good those tests are,” said Prof Powis.
Currently, the coronavirus tests available to all adults and children aged over five are swab tests – taking a swab up the nose or from the back of the throat. These tests tell you if you currently have Covid-19.
A second type of test – the antibody test – is a blood test that looks for antibodies in the