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Scoring standard of NAFLD/MAFLD activity.
| NAS (0–8 points) | |||||
|---|---|---|---|---|---|
| 1.Steatosis (0-3 points) | 2. Lobular inflammation (0-3 points) | 3. Ballooning (0-2 points) | |||
| 0 | <5 % | 0 | No foci | 0 | None |
| 1 | 5-33 % | 1 | <2 foci per 200 × field | 1 | Few balloon cells |
| 2 | 33-66 % | 2 | 2-4 foci per 200 × field | 2 | Many cells/prominent ballooning |
| 3 | >66 % | 3 | >4 foci per 200 × field | ||
