Table 2.
Performances of the HCV Ag and anti-HCV tests compared to the HCV-RNA assaya
| Test | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy (%) | No. of samples |
||
|---|---|---|---|---|---|---|---|---|
| Total positive | False negative | False positive | ||||||
| HCV Ag (Abbott) | 96.3 (93.3-99.2) | 100 (100-100) | 100 (100-100) | 89.7 (81.8-97.5) | 97.2 (93.4-100) | 160 | 6 | 0 |
| Anti-HCV (Abbott) | 96.3 (93.3-99.2) | 26.9 (14.9-38.9) | 80.2 (74.6-85.8) | 70.0 (49.9-90.1) | 79.2 (74.9-82.4) | 160 | 6 | 38 |
a
Values in parentheses are ranges. PPV, positive predictive value; NPV, negative predictive value.