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Simplified diagnostic criteria for autoimmune hepatitis.
| Variable | Cutoff | Points |
|---|---|---|
| ANA or SMA | ≥1 : 40 | 1 |
| ANA or SMA | ≥1 : 80 | |
| or LKM | ≥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 |
