Table 2.
Suggested D-dimer cutoff points with their sensitivities, specificities, positive and negative predictive values, and false positive rates
| Cutoff Point (mcg/mL) | Sensitivity | Specificity | PPV | NPV | False Positive Rate of DD |
|---|---|---|---|---|---|
| 0.50 | 100% | 13% | 6.7% | 100% | 82% |
| 0.55 | 100% | 20% | 7.3% | 100% | 75% |
| 0.60 | 100% | 25% | 7.7% | 100% | 71% |
| 0.65 | 100% | 30% | 8.1% | 100% | 66% |
| 0.70 | 100% | 36% | 8.9% | 100% | 60% |
| 0.75 | 100% | 44% | 10.0% | 100% | 53% |
| 0.80 | 100% | 48% | 10.8% | 100% | 49% |
| 0.85 | 100% | 51% | 11.3% | 100% | 46% |
| 0.90 | 93% | 54% | 11.2% | 99.2% | 43% |
| 0.95 | 93% | 57% | 11.8% | 99.2% | 41% |
| 1.00 | 93% | 58% | 12.0% | 99.2% | 40% |
| 1.05 | 93% | 59% | 12.3% | 99.2% | 39% |
| 1.10 | 86% | 59% | 11.7% | 98.5% | 38% |
PPV: Positive predictive value, NPV: Negative predictive value, DD: D-dimer