Table 4 Diagnostic value of serological markers for AIP diagnosis
Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | |
|---|---|---|---|---|
Elevated IgG4 levels | 58 | 94 | 50 | 96 |
CA-II Abs | 83 | 75 | 24 | 98 |
AMY-α Abs | 83 | 89 | 42 | 98 |
Elevated IgG4 levels and CA-II Abs | 50 | 98 | 67 | 95 |
Elevated IgG4 levels and AMY-α Abs | 50 | 99 | 86 | 95 |
CA-II Abs and AMY-α Abs | 75 | 93 | 50 | 98 |
All three: elevated IgG4 levels, CA-II Abs and AMY-α Abs | 50 | 99 | 86 | 95 |