An A1C test is a blood draw used to diagnose and manage prediabetes and diabetes. Learn more about who needs this test and why and how it’s performed.

A high hemoglobin A1C, or A1C, shows your body has difficulty ... A glucometer (blood sugar meter) uses test strips and a tiny sample of blood from your finger. It shows your approximate blood ...

fasting non-fasting hemoglobin A1C test oral glucose tolerance test (OGTT ... your glucose levels at home using a blood glucose meter or a continuous glucose monitor (CGM).

Bring your meter or a log of your results with you each time you see your doctor. This will help you and your doctor make decisions about your diabetes treatment. To test your blood sugar ...

Finally, talk to your doctor to find the right treatment for you. Your doctor may do an A1C test every three to six months. Track your results and watch your progress over time. With careful ...

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 ...