The HbA1C is a blood test that will help you know whether your blood sugar has been at target over the past 3 months. A lower HbA1C will reduce your risk of eye problems and other diabetes related complications, such as heart disease, stroke, kidney disease, nerve damage, and foot problems. The goal for most people with diabetes is to have an HbA1C of 7% (53 mmol/mol) or less but you should talk to you doctor about the HbA1C target that is right for you. A higher HbA1C target may be safer for certain people. Targets and medications should be adjusted to prevent low blood sugars. You should have this blood test done every 3 months when blood sugar targets are not being met or when you are making changes to your diabetes management.