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Table 2 Sensitivity and specificity of IgM ELISA for dilution 1:80 and 1:160 at different cut-off values

From: In-house ELISA screening using a locally-isolated Leptospirain Malaysia: determination of its cut-off points

Dilution Cut-off value Sensitivity (%) Specificity (%) Positive predictive value (%) Negative predictive value (%)
  0.45 96.15 57.89 75.76 91.67
1:80 0.50 94.87 75.44 84.09 91.49
  0.55 90.38 87.72 86.96 90.97
0.60 85.26 93.86 95.00 82.31
0.65 80.13 97.37 97.66 78.17
  0.45 88.46 84.21 88.46 84.21
1:160 0.50 83.33 90.35 92.20 79.84
  0.55 72.44 92.98 93.39 71.14
0.60 66.67 97.37 97.20 68.10
0.65 57.05 97.37 96.74 62.36