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. 2020 Oct 20;40(4):751–759. doi: 10.1007/s10096-020-04072-7

Table 3.

Analysis of serum samples from COVID-19-infected individuals at various time points relative to PCR-confirmation by EuroImmun ELISA, in-house flow cytometric assay, and Yhlo CLIA

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* Time gap between SARS-CoV-2 diagnosis by PCR and collection of blood sample. AU, arbitrary units. +, seropositive. -, seronegative. +/-, borderline. Ratios for IgG and IgA ELISA indicate the ratio between sample and calibrator. Ratios for the flow cytometric assay indicate the ratio MFI (SARS-CoV-2)/MFI (Mock) for a given sample. Red/orange background indicates negative/borderline result