Insulin Resistance and Severity of Coronary Artery Disease

Inclusion Criteria: * patients undergoing coronary angiography (CA) for ACS or stable angina in the Catheterization Laboratory of internal Medicine department and El Noor specialized cardiac center at the study period. Exclusion Criteria: * age \< 18 years, * pregnancy or breastfeeding, * BMI \>30 Kg/m2 and * presence of pre-diabetes or overt diabetes.