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Table 4 Diagnostic performance of different cutoff points for FEIA and ISAC Ara h 2 sIgE, and ISAC Ara h Ara h 6 sIgE

From: Peanut components measured by ISAC: comparison with ImmunoCap and clinical relevance in peanut allergic children

Ara h 2

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

FEIA (kU/l)

 > 0.10

98

53

73

96

 > 0.35

92

73

82

88

 > 4.40

46

100

100

56

Ara h 2

ISAC (ISU)

 > 0.10

94

71

81

90

 > 0.30

94

73

82

90

 > 7.43

32

100

100

53

Ara h 6

ISAC (ISU)

 > 0.10

92

73

81

88

 > 0.30

92

73

81

88

 > 8.13

38

100

100

55

  1. PPV positive predictive value, NPV negative predictive value