Breakpoints | Sensitivity | Specificity | PPV | NPV | LR+ | LR− | Youden Index |
1.04 ng/mL | 0.73 | 0.83 | 0.81 | 0.75 | 4.4 | 0.32 | 0.56 |
1.25 ng/mL | 0.7 | 0.86 | 0.84 | 0.74 | 5.25 | 0.34 | 0.56 |
1.54 ng/mL | 0.66 | 0.9 | 0.86 | 0.72 | 6.66 | 0.37 | 0.56 |
2.32 ng/mL | 0.63 | 0.93 | 0.90 | 0.71 | 9.5 | 0.39 | 0.56 |