The A1C test measures a person’s average blood glucose or blood sugar levels over the past 3 months. An A1C reading of over 5.6% may be a cause for concern, but this will depend on various factors.

The A1C test measures blood sugar management over 2 or 3 months. To estimate an A1C, clinicians may use an estimated average glucose (eAG) to help people with diabetes better understand how this multi ...

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 part of ...

What to expect when undergoing this test ...