The hemoglobin A1C test ... They may better reflect how your glucose levels fluctuate, whether it’s a 3 a.m. low or a dramatic spike after lunch, and what that means overall for how you can ...

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 ...

The percentage of glycated hemoglobin in blood has long been known as a marker of long-term glucose levels. This test has become the standard means for assessing response to treatment in people ...