An A1C test is used to diagnose and monitor diabetes by measuring the body's average blood sugar level over the past three months. A high hemoglobin A1C, or A1C, shows your body has difficulty ...

A1C levels refer to the amount of hemoglobin in your blood that has glucose attached to it, which can be useful for monitoring blood sugar levels over time. Managing your blood sugars is a key ...

C. Ronald Kahn, M.D. President and Director, Joslin Diabetes Center What is the A1c blood test? The hemoglobin A1C test is a measure of what we call long term glucose control. The way this works ...

You’ll also get a free A1C test. All next month, the American Red Cross is providing free A1C testing with each complete blood, platelet and plasma donation. The A1C test is commonly used to ...