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. 2021 May 28;16(5):e0252621. doi: 10.1371/journal.pone.0252621

Fig 2. CLIR plot by multiple conditions of 159 DBS samples with serum SARS-CoV-2 antibody results.

Fig 2

Abbreviations: NC, nucleocapsid protein; RBD, receptor binding domain; S1, spike glycoprotein S1 subunit; BGKR, background; C, control. Luminex (Lu)-IgG TP, ranges for true positive cases (N = 49; blue); Lu-IgG FP, false positive cases (N = 3; orange); Lu-IgG FN, false negative cases (N = 2; purple); and Lu-IgG TN, true negative cases (N = 105; red). Upper whisker end: 99th percentile; top of box: 90th percentile; line in box: median; bottom of box: 10th percentile; lower whisker end: 1st percentile. Black diamonds indicate the manufacturer provided cutoff (700 MFI) for IgG against SARS-CoV-2 NC, RBD and S1 antigens, respectively.