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Fig. 1.

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Fig. 1. Seroconversion detected using eight antibody assays with corresponding index values. Serial serum samples from 10 patients hospitalized for confirmed SARS-CoV-2 infection were tested. The index values against days from symptom onset are plotted. The dotted horizontal line represents the assay cut-off for positivity. Patients with a severe (patients 1, 5, 9) and critical (patient 3) disease course are indicated in red and dark red, respectively. Patients with a mild disease course (patients 2, 4, 6, 7, 8, 10) are indicated in blue. (A) Abbott–IgG, (B) Siemens - Total Ig, (C) Roche–Total Ig, (D) Euroimmun–IgA, (E) Euroimmun–IgG, (F) Vircell–IgM+IgA, (G) Vircell–IgG, (H) Biorad–Total Ig. (I) Boditech–IgM, (J) Boditech–IgG, (K) Genscript –Neutralizing antibody.
Ann Lab Med 2021;41:577~587

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