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. 2020 Oct 12;5:181. Originally published 2020 Jul 29. [Version 2] doi: 10.12688/wellcomeopenres.16002.2

Figure 5. Relationship between serum SARS-COV-2 RT-PCR and total antibody titre, determined by Siemens SARS-CoV-2 Atellica assay.

Figure 5.

( A) Proportion of samples testing antibody positive according to RT-PCR status of serum sample; p-value by Fisher’s Exact Test; ( B) Distribution of IgG titres in samples according to RT-PCR status of serum sample; boxes show median/IQR and whiskers show range; p-value by Mann-Whitney U test; ( C) Antibody titres in 23 serum samples testing RT-PCR positive for SARS-CoV-2 RNA, presented in rank order. The bars marked with an asterisk indicate the samples for which in vitro culture was attempted. In all panels, antibody positivity is reported according to the threshold set by the assay manufacturer.