Table 2.

Performances of the HCV Ag and anti-HCV tests compared to the HCV-RNA assaya

TestSensitivity (%)Specificity (%)PPV (%)NPV (%)Accuracy (%)No. of samples
Total positiveFalse negativeFalse 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)16060
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)160638
  • a Values in parentheses are ranges. PPV, positive predictive value; NPV, negative predictive value.