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Glycosylated hemoglobin gives a measure of average blood glucose level over the preceding 3 months. An impressive body of evidence supports the claim that lowering A1c reduces micro- and macrovascular complications.

A1c goal:

• A minimum goal for A1c is <7%.
• However, the optimum goal for each individual is to achieve an A1c as close to normal (<6%) as can be safely achieved without severe hypoglycemia.

How often should A1c be measured?

• At least two times a year for a stable, well-controlled patient (A1c <6%).
• Every 3 months in patients who do not have a normal A1c.