Skip to main content

Table 4 Cut-off values, sensitivity, specificity, and positive and negative predictive values of the P. heterotremus 35 kDa recombinant fusion protein ELISA. The ELISA was performed using 1 μg of P. heterotremus 35 kDa recombinant fusion protein and 30 negative serum samples diluted at 1:2000. Test results were determined by the OD405 values of all serum samples under the cut-off value of 0.54

From: ELISA based on a recombinant Paragonimus heterotremus protein for serodiagnosis of human paragonimiasis in Thailand

Cut-off value OD at 405 nm Sensitivity (%) Specificity (%) Predictive values (%)
Positive Negative
Mean + SD 0.44 80 80 80 80
Mean + 2 SD 0.54 100 100 100 100
Mean + 3 SD 0.64 0 100 0 50
Evaluation of test under the cut-off value in this study
Mean + 2 SD 0.54 88.89 95.51 74.42 98.32