Table 3 Performance of ELISA based on Luminex diagnosis as gold standard.

From: Agreement between commercially available ELISA and in-house Luminex SARS-CoV-2 antibody immunoassays

Isotype

FN

FP

TN

TP

Total

SE (%)

SP (%)

PPV (%)

NPV (%)

IgG

22

1

121

27

171

55

99

96

85

IgM

1

112

24

34

171

97

18

23

96

IgA

3

102

22

44

171

94

18

30

88

All isotypes

3

73

20

75

171

96

22

51

87

  1. The analysis included samples from mothers (N = 168) and cord (N = 3). The section of “All isotypes” refers to the performance based on seropositivity by any of the three isotypes.
  2. FN false negative, FP false positive, TN true negative, TP true positive, SE sensitivity, SP specificity, PPV positive predictive value, NPV negative predictive value.
Back to article page