A1C Range for Type 2 Diabetes
The A1C test reflects your average blood sugar over the past two to three months. For type 2 diabetes, a result of 6.5% or higher on two separate tests generally means you have diabetes. A reading between 5.7% and 6.4% falls in the prediabetes range, and below 5.7% is considered normal.
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How the A1C Test Works
Hemoglobin inside red blood cells picks up glucose from your bloodstream. The higher your blood sugar, the more glucose attaches to hemoglobin. Since red blood cells live about 120 days, the test captures a long-term average rather than a single moment.
What the Ranges Tell You
A1C does not diagnose diabetes on its own; a doctor interprets it alongside symptoms and other tests. An A1C of 6.5% or higher suggests diabetes, while 5.7% to 6.4% signals prediabetes, a warning that blood sugar is elevated but not yet in the diabetes range. Below 5.7% is normal.
Managing Type 2 Diabetes with A1C Goals
Many adults with type 2 diabetes aim for an A1C below 7%, though individual targets vary based on age, other health conditions, and risk of low blood sugar. A higher target, such as below 8%, may be appropriate for some people. Your care team will set a goal that balances long-term health with daily safety.
Testing Frequency and Next Steps
If you have diabetes, A1C is usually checked every three to six months. An A1C above your target may prompt adjustments to medication, diet, or exercise. If your result falls in the prediabetes range, lifestyle changes such as weight loss, balanced eating, and regular activity can often lower blood sugar and slow progression to type 2 diabetes.