HSI (Hepatic Steatosis Index) Calculator

HSI = 8 × (ALT/AST ratio) + BMI (+2, if female; +2, if diabetes mellitus)

AST (U/L) :
ALT (U/L) :

HSI Score
HSI ＜ 30 : Low probability of NAFLD (sensitivity 93.1%)
NFS 30 ~ 36 : Indeterminant score
NFS ＞ 36 : High probability of NAFLD (specificity 92.4%)

Reference :
Lee JH, Kim D, Kim HJ, et al. Hepatic steatosis index: a simple screening tool reflecting nonalcoholic fatty liver disease. Dig Liver Dis 2010;42:503-508.