RE: Here we go!!6 Jun 2020 17:23
Yet in the British medical journal it is stated
Roche’s Anti-SARS-CoV-2 serology assay was tested between 5 and 7 May by the PHE diagnostic support group,2 which used 93 serum samples from convalescent patients and 472 negative samples. The team reported that all negative samples tested negative, giving a specificity of 100%, while the overall sensitivity was 83.87%, rising to 87.0% at 14 days after onset of symptoms, 87.7% 21 days after, and 100% more than 40 days after.
Abbott’s SARS-CoV-2 IgG kit was tested between 4 and 7 May,3 with 96 samples from convalescent patients and 759 negative samples. The assay was found to be 99.63% specific, with a sensitivity of 93.90% at 14 days after symptom onset, dropping to 93.40% at 21 days and 87.5% at 40 days.
https://www.bmj.com/content/369/bmj.m2066