A1c Test for Diabetes: Normal Range | 合法醫療器材資訊網

TheA1Ctestmeasurestheamountofhemoglobininthebloodthathasglucoseattachedtoit.Thetestprovidesanaverageofyourbloodsugarreadingsforthe ...

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.

People with diabetes used to depend on daily finger pricks to measure their blood sugar levels. These tests are accurate, but only in the moment — they’re actually very limited as an overall measurement of blood sugar[1] control.

This is because your blood sugar can vary wildly depending on the time of day, your activity levels, and even hormonal changes. Some people may have high blood sugar at 3 a.m. and be totally unaware of it. A1C tests became available in the 1980s and quickly became an important tool in monitoring diabetes[2] control.

A1C tests measure average blood glucose[3] over the past 2 to 3 months. So even if you have a high f...