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. 2021 May 10;8(7):ofab239. doi: 10.1093/ofid/ofab239

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© The Author(s) 2021. Published by Oxford University Press on behalf of Infectious Diseases Society of America.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 2. — Comparative analysis of assay sensitivity post–symptom onset <7 days, 7–14 days, ≥14 days, and averaged. Comparative analysis of assay specificity in cross-reactive assessment and population groups Abbreviations: Ab, antibody; E-S1-IgA, Euroimmun S1-IgA; E-S1-IgG, Euroimmun S1-IgG; E-NCP-IgG, Euroimmun NCP-IgG; Ig, immunoglobulin; NCP, nucleocapsid; sVNT, GenScript surrogate virus neutralization test (20% cutoff with repeat testing for equivocal results [18–22]; sVNT-20 with 20% cutoff with no repeat testing; sVNT-25 with 25% inhibition cutoff and no repeat testing); W-IgM, Wantai IgM, W-T, Wantai Total Ab.