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Printed on 4/19/2026
For informational purposes only. This is not medical advice.
The NAFLD Fibrosis Score (NFS) is a non-invasive model for advanced fibrosis risk in metabolic dysfunction-associated steatotic liver disease pathways. It helps separate lower-risk patients from those needing specialist evaluation.
Formula: NFS = -1.675 + 0.037 x age + 0.094 x BMI + 1.13 x (IFG/diabetes) + 0.99 x AST/ALT ratio - 0.013 x platelets - 0.66 x albumin
Lower scores suggest lower probability of advanced fibrosis, while higher scores indicate increased risk and need for further assessment.
Use NFS in fatty liver disease evaluation when full lab and metabolic inputs are available for fibrosis risk triage.
Performance varies by age and metabolic profile, and indeterminate results are common. NFS should be interpreted with complementary fibrosis tests.
For related assessments, see FIB-4, AST/ALT Ratio and BMI Calculator.
Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.
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