Which A1C range is used to diagnose diabetes?

Which A1C range is used to diagnose diabetes?

• A. 6.5% exactly
• B. 5.7-6.4%
• C. Greater than 6.5%
• D. Below 5.7%

Answer: (C)

A1C reflects the average blood glucose level over roughly the past three months. For diagnosing diabetes, the cut-off is 6.5% or higher. Values from about 5.7% to 6.4% indicate prediabetes, and anything below 5.7% is considered normal. Therefore, the option describing values that are above this threshold best matches the diagnostic criterion for diabetes, noting that the threshold includes 6.5% itself.

A1C reflects the average blood glucose level over roughly the past three months. For diagnosing diabetes, the cut-off is 6.5% or higher. Values from about 5.7% to 6.4% indicate prediabetes, and anything below 5.7% is considered normal. Therefore, the option describing values that are above this threshold best matches the diagnostic criterion for diabetes, noting that the threshold includes 6.5% itself.