Some trials of lateral flow test from US firm Innova found it was much less accurate than the government said it was
The lateral flow test bought by the UK government for mass testing in Liverpool, and potentially the whole country, could miss up to half of those who have Covid-19, according to experts.
The government has great expectations of the Innova test, having signed two contracts with the California-based company behind it. Innova told the Guardian it was now shipping more than one million tests a day to the UK.
