| Score ( f ) | Stage | Interpretation |
|---|---|---|
| 0.00 ≤ f ≤0.21 | F0 | No fibrosis |
| 0.21 < f ≤ 0.27 | F0-F1 | No fibrosis |
| 0.27 < f ≤ 0.31 | F1 | Minimal fibrosis |
| 0.31 < f ≤ 0.48 | F1-F2 | Minimal fibrosis |
| 0.48 < f ≤ 0.58 | F2 | Moderate fibrosis |
| 0.58 < f ≤ 0.72 | F3 | Advanced fibrosis |
| 0.72 < f ≤ 0.74 | F3-F4 | Advanced fibrosis |
| 0.74 < f ≤ 1.00 | F4 | Severe fibrosis (Cirrhosis) |
| Score ( a ) | Grade | Interpretation |
|---|---|---|
| 0.00 ≤ a ≤0.17 | A0 | No activity |
| 0.17 < a ≤0.29 | A0-A1 | No activity |
| 0.29 < a ≤0.36 | A1 | Minimal activity |
| 0.36 < a ≤0.52 | A1-A2 | Minimal activity |
| 0.52 < a ≤0.60 | A2 | Significant activity |
| 0.60 < a ≤0.62 | A2-A3 | Significant activity |
| 0.62 < a ≤1.00 | A3 | Severe activity |
| Score ( s ) | Grade | Interpretation |
|---|---|---|
| 0.00 ≤ s ≤0.40 | S0 | No steatosis (<5%) |
| 0.40 < s ≤0.55 | S1 | Mild steatosis (but clinically significant) (5-33%) |
| 0.55 < s ≤1.00 | S2S3 | Moderate to severe steatosis (clinically significant) (34-100%) |
| Score ( s ) | Grade | Interpretation |
|---|---|---|
| 0.00 ≤ s ≤0.30 | S0 | No steatosis (<1%) |
| 0.30 < s ≤0.38 | S0-S1 | No steatosis (<1%) |
| 0.38 < s ≤0.48 | S1 | Minimal steatosis (1-5%) |
| 0.48 < s ≤0.57 | S1-S2 | Minimal steatosis (1-5%) |
| 0.57 < s ≤0.67 | S2 | Significant steatosis (6-32%) |
| 0.67 < s ≤0.69 | S2-S3 | Significant steatosis (6-32%) |
| 0.69 < s ≤1.00 | S3 | Severe steatosis (>32%) |
| Score ( n ) | Grade | Interpretation |
|---|---|---|
| 0.00 < n ≤0.25 | N0 | No NASH |
| 0.25 < n ≤0.50 | N1 | Minimal NASH |
| 0.50 < n ≤0.75 | N2 | Moderete NASH |
| 0.75 < n ≤1.00 | N3 | Severe NASH |
| Score ( n ) | Grade | Interpretation |
|---|---|---|
| 0.25 | N0 | No NASH |
| 0.50 | N1 | Possible NASH |
| 0.75 | N2 | NASH |
| Score ( h ) | Grade | Interpretation |
|---|---|---|
| 0.00 ≤ h ≤ 0.17 | H0 | No alcoholic inflammation |
| 0.17 < h ≤ 0.5536 | H1 | Moderate alcoholic inflammation |
| 0.5536 < h ≤ 0.78 | H2 | Significant alcoholic inflammation |
| 0.78 < h ≤ 1.00 | H3 | Severe alcoholic inflammation |