GPT and heart failure: The triglyceride and glucose (TyG) index score is another similar non-invasive tool that is described as a biomarker for insulin resistance and assesses liver fibrosis severity by estimating formula-based liver stiffness, which involves parameters including ALT, AST, BMI, platelet count, and presence or absence of diabetes [51,52] and may predict mortality in heart failure patients [53,54].