What is the normal range for A1C hemoglobin?

The normal range for A1C hemoglobin, also known as glycated hemoglobin, is indicative of average blood glucose levels over the past two to three months. The correct range of 4.5-6% reflects the typical threshold for individuals without diabetes. A1C is used as a diagnostic tool for diabetes management, where a value below 5.7% is often considered normal.

Understanding the significance of the A1C value is critical for assessing a patient's risk for developing diabetes; however, the specific ranges can vary slightly according to different health organizations. A value above 6.5% typically suggests diabetes, while values between 5.7% and 6.4% indicate prediabetes.

The other ranges presented do not accurately represent the accepted normal ranges for A1C. For instance, a range of 3.5-5.5% may be considered lower than what is typical, and the 5.0-7.0% range extends into the prediabetic territory. The 4.0-5.0% range also falls below the standard threshold for a healthy individual.

Thus, knowing that the ideal range for A1C hemoglobin is between 4.5 and