MDCalc

Steatosis-Associated Fibrosis Estimator (SAFE) Score

Estimates the risk of moderate to advanced liver fibrosis (stages 2 or higher) among patients with metabolic dysfunction-associated steatotic liver disease (MASLD).

years
kg/m²

Diabetes

U/L
U/L

Result:

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Advice

This tool should be used in conjunction with a thorough evaluation and clinical judgment.

Management
  • Low risk (score <0):
    • Reinforce lifestyle and metabolic risk mitigation measures.
    • Repeat score or alternative noninvasive testing routinely (typically every 1–3 years) or if clinical status worsens.
  • Indeterminate risk (score 0–99):
    • Consider additional noninvasive testing (e.g., VCTE, ELF).
    • Refer to hepatology if imaging suggests fibrosis or other high-risk features are present (e.g., thrombocytopenia, advanced age).
    • Otherwise, repeat score or alternative noninvasive testing routinely or if clinical status worsens.
  • High risk (score ≥100): 
    • Refer to hepatology.
    • May require biopsy.