Gastroenterology

Fibrotic NASH Index calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Aspartate aminotransferase

U/L

Allowed range: 1–5000 U/L

Glycated hemoglobin percent

Allowed range: 3–20 %

HDL cholesterol

mg/dL

Allowed range: 1–200 mg/dL

Result

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Clinical inputs

Aspartate aminotransferase (U/L)Accepted range: 1 to 5000
Glycated hemoglobin percent (%)Accepted range: 3 to 20
HDL cholesterol (mg/dL)Accepted range: 1 to 200

Primary source

Tavaglione F et al. Clin Gastroenterol Hepatol. DOI: 10.1016/j.cgh.2022.03.044. PMID: 35421583. x = −10.33 + 2.54×ln(AST in U/L) + 3.86×ln(HbA1c in %) − 1.66×ln(HDL in mg/dL), using natural logarithms. FNI = exp(x) / (1 + exp(x)). FNI of 0.10 or lower is the rule-out zone, with derivation negative predictive value 0.93. FNI of 0.33 or higher is the rule-in zone, with derivation positive predictive value 0.57. (2022)

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