Table 3.
Simplified diagnostic criteria for auto immune hepatitis[75]
| Variable | Cutoff | Points |
| ANA or ASMA | ≥ 1:40 | 1 |
| ANA or ASMA | ≥ 1:80 | |
| or LKM-1 | ≥ 1:40 | 2 |
| or SLA | Positive | |
| IgG | > Upper normal limit | 1 |
| > 1.10 times upper normal limit | 2 | |
| Liver histology (evidence of hepatitis is a necessary condition) | Compatible with AIH | 1 |
| Typical AIH | 2 | |
| Absence of viral hepatitis | Yes | 2 |
| ≥ 6: probable AIH | ||
| ≥ 7: definite AIH |
ANA: Antinuclear antibodies; ASMA: Anti-smooth-muscle antibodies; LKM-1: Anti Liver kidney microsomal; IgG: Immunoglobulin G.