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. 2020 Oct 21;58(11):e01742-20. doi: 10.1128/JCM.01742-20

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This article is made available via the PMC Open Access Subset for unrestricted noncommercial re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.

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FIG 1 — Results from inhibition assays. Blue dots represent samples positive in all 4 assays (TP samples); red dots represent samples that were positive only in the indicated assay. Values for the Abbott assay represent percent inhibition by nucleocapsid, values for the DiaSorin assay represent percent inhibition by S1+S2 proteins, and values for the Euroimmun assay represent percent inhibition by S1 protein. The horizonal lines indicate the assay-specific inhibition value below which reactivity is considered FP.