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So @peston roasted for Q’s re: #COVID #antibodytest and told tests unreliable until 28days by #PHE #DCMO - this was NOT correct.
This paper from @nature ow.ly/6TDz30quY7V published 2 days ago shows 50% antibody +ve at 7days from symptom onset & all by 2 weeks 1/x
This paper from @nature ow.ly/6TDz30quY7V published 2 days ago shows 50% antibody +ve at 7days from symptom onset & all by 2 weeks 1/x
The dogmatic resistance to #antibodytest by PHE & the failure of their experts to be properly briefed about emerging evidence is potentially damaging. #COVID19 Patients presenting to hospital have typically had symptoms for several days & may therefore be #antibodytest +ve 2/x
...& the test may therefore have some utility- even in an intensive care setting where PCR tests may also be (false) negative ow.ly/ZQUM30quYU0 - antibody positive test results would moderate clinical decision making in latter clinical stages (>1-2weeks) 3/x
