Currently, over 8 per cent of people who were tested in ‘pillar two’ have been told that their test result is ‘unclear’. Pillar two is the strand of the government’s testing strategy that deals with at-home tests and those carried out at drive-through centres. This pillar is designed for certain key workers and those who have been randomly selected for testing.
Yet the NHS instructions given to Sarah make clear that while the test might be ‘uncomfortable’, patients should stop if they ‘feel strong resistance or pain’. In other words, she was told to stop swabbing if it hurt. The tests may be accurate in a clinical setting but the problem comes when people are expected to try to carry out the procedure themselves in the real world.
https://www.spectator.co.uk/article/revealed-90-000-void-uk-covid-tests