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. 2021 Oct 27:lmab085. doi: 10.1093/labmed/lmab085

Table 6.

Double-Blind Test Results of the Combined S1 RBD and N Protein and Albumin Subtracted iELISA for IgG, IgM, and IgA Antibodies

Target Specificity False Positives Sensitivity False Negatives
IgG 90.00% 1 90.00% 2
IgM 100.00% 0 75.00% 5
IgA 100.00% 0 70.00% 6