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High A1C levels are a risk factor for diabetes and other complications. However, ideal and dangerous A1C levels can vary slightly between each individual. Lifestyle changes can help manage...
An A1c of 5.5 is Normal. View the full A1c chart to learn more about A1c levels. What does an A1c of 5.5 mean? A1c readings between 4.0 and 5.6 indicate that the level of glucose in your blood is normal. The A1c test measures blood sugar over the last three months by looking at the percentage of hemoglobin saturated with sugar.
Healthcare providers use the A1c test to glean information about how your metabolism and typical diet affect your blood sugar. If your A1c falls within the normal range of 5.7% or less, a high blood glucose reading is related more to your last meal than your ongoing blood sugar levels.
If your blood glucose or A1C levels are high, a healthcare professional will likely recommend further testing to confirm a diagnosis of prediabetes or diabetes.
Less than 5.7% means you don’t have diabetes. 5.7% to 6.4% signals prediabetes. 6.5% or higher usually indicates Type 2 diabetes (or Type 1 diabetes). If you already have diabetes, an A1C result is a glimpse into how well your management plan has been working over the last three months.
An A1c below 5 percent can indicate frequent and severe hypoglycemia. Conversely, an A1c of 9 percent or above significantly increases the risk of diabetes complications. To achieve a safe A1c, work with your healthcare provider to adjust medications, diet, and physical activity, and manage sleep and stress.
Learn about the A1C test, a simple blood sugar test to diagnose prediabetes or diabetes, hemoglobin A1C and what do numbers mean, and how A1C relates to eAG.
For adults, healthcare providers use the following HbA1c target ranges in diagnosing diabetes [6]: A normal A1C level is below 5.7%. Prediabetes is between 5.7 to 6.4%. Type 2 diabetes is above 6.5%. The goal for most adults with diabetes is an A1C that is less than 7%.
The A1C test is often performed as part of a yearly health checkup, or may be ordered if you have risk factors for prediabetes. The range for a diagnosis of prediabetes is an A1C of 5.7% to 6.4%. In general, prediabetes precedes the development of type 2 diabetes.
When you take steps to get your A1c in a healthy range, you lower your risk of complications such as nerve damage, eye problems, and heart disease.