RE: Scepticism as Boohoo bosses turn from fashion to Covid tests25 Sep 2020 14:02
Part 1
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But testing experts have raised concerns that these claims are “misleading”, given that it is an antibody test and antibodies only tend to develop several days after infection. For this reason, the World Health Organisation does not recommend the use of antibody-detecting rapid diagnostic tests to find cases of current infection.
According to preliminary clinical trials, the test has 92 per cent specificity, meaning nearly a tenth of users would get an incorrect result.Â
The MHRA, the UK medical regulator, has set a target of 99 per cent specificity for rapid antigen tests and 98 per cent for rapid antibody tests.
“The specificity of this test is appalling compared to RT-PCR [the common antigen tests] and other antibody tests,” said Jon Deeks, professor of biostatistics at Birmingham university and lead author of a continuing review into antibody testing by Cochrane, the independent global health organisation.