Dysglycemia is widespread among patients with coronary artery disease. It is indeed more common than normoglycemia in these patients. Coexistence of cardiovascular disease and dysglycemia presents significant health risks, and evidence suggests that both conditions should be treated early to reduce the development of complications. Guidelines recommend testing for prediabetes and type 2 diabetes in the cardiology setting and highlight the use of therapies that treat metabolic and cardiovascular risk factors. Blood glucose levels have previously been the interest of diabetologists, but modern integrated management approaches should include assessment by a cardiologist. We propose that postprandial blood glucose testing be carried out routinely in all patients with coronary artery disease, and that newly diagnosed dysglycemia be actively managed.