Covid: Lateral flow tests more accurate than first thought, study finds – BBC News

When the researchers used a new formula for calculating the test’s accuracy, they found LFTs were more than 80% effective at detecting any level of Covid-19 infection and likely to be more than 90% effective at detecting who is most infectious when they use the test.

This is much higher than previously thought, they say, adding that rapid tests are “a very useful public health tool” for stopping the spread of the virus.

Prof Michael Mina, from Harvard School of Public Health, also part of the research team, said the LFTs could “catch nearly everyone who is currently a serious risk to public health” when viral loads are at their peak.

“It is most likely that if someone’s LFT is negative but their PCR is positive, then this is because they are not at peak transmissible stage,” he said.

Source: Covid: Lateral flow tests more accurate than first thought, study finds – BBC News