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 ...

No, not that number, your A1C. Your A1C measures the amount of sugar in your red blood cells and gives an ... Your doctor may do an A1C test every three to six months. Track your results and ...

An A1C test measures the amount of glucose in your blood over the previous 12 weeks. This is important because it provides a long-term measure of blood-sugar levels, which are used to diagnose and ...

How often should you test your glucose and A1C? How do food, sleep and exercise affect blood sugar? Here’s what to know. Credit...Illustration by Andrei Cojocaru; Photos by Getty Supported by By ...