One of the problems facing GPs is that there’s no test available to diagnose long COVID. Many people who got ill early in the pandemic could not access a COVID-19 test, and testing them now gives negative results. It’s the same with the antibody test - too much time has elapsed since the suspected time of infection. Despite this, a Facebook support group for long COVID sufferers in the UK currently has around 33,000 members. Is long COVID a real condition?