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Table 3 Cut-points determined, by use of receiver operating characteristic (ROC) curve, to maximize either the sensitivity or the specificity of each test [42]. The area under the curve is a measure of the overall ability of the test to discriminate affected from unaffected animals [42]

From: Comparison of rapid laboratory tests for failure of passive transfer in the bovine

Test

Area under curve (AUC)

Cut-point (Target Se)

Se

Sp

Cut-point (Target Sp)

Se

Sp

GGT

0.996

3449.3 IU/L

100.00 %

0.00 %

4.6 IU/L

80.80 %

100.00 %

ELISA

0.989

21.9 mg/ml

100.00 %

73.60 %

6.4 mg/ml

97.30 %

100.00 %

Globulin

0.98

19.11 mg/ml

100.00 %

84.90 %

12.65 mg/ml

86.30 %

100.00 %

STP

0.894

48.9 mg/ml

100.00 %

69.80 %

25.4 mg/ml

21.90 %

100.00 %

ZST

0.875

21 units

100.00 %

24.50 %

1 unit

47.90 %

100.00 %