What is A1C?
A1C is a blood test done by the lab, which reflects overall control of Diabetes, dating back 3 months. The A1C target according to ADA is <7% . This level is associated with a low level of complications of Diabetes. The target A1C should be individualized depending on a number of relevant factors such as age and duration of Diabetes.
The A1c should be done no more often than every 3 months. The A1C test measures part of the red blood cell hemoglobin. Red blood cells live 3-4 months, and one of the hemoglobin fractions in the red blood cell is the A1C. This fraction irreversibly attaches sugar which crosses the red cell membrane. The A1C, then, offers a 3-month barometer of overall Diabetes control