Fatty Liver Index
The Fatty Liver Index predicts steatosis on ultrasound. It detects fat, not fibrosis.
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How it is worked out
FLI = ey ÷ (1 + ey) × 100, where y = 0.953 × ln triglycerides (mg/dL) + 0.139 × BMI + 0.718 × ln GGT + 0.053 × waist (cm) − 15.745. Triglycerides in mmol/L are multiplied by 88.57. Below 30 rules out steatosis; 60 or more rules it in.
Reference
Bedogni G, Bellentani S, Miglioli L, et al. The Fatty Liver Index: a simple and accurate predictor of hepatic steatosis in the general population. BMC Gastroenterol. 2006;6:33.