What is the HbA1c threshold used to diagnose Diabetes Mellitus?

The HbA1c threshold used to diagnose Diabetes Mellitus is 6.5%. This level is significant because it reflects average blood glucose levels over the previous two to three months. According to the American Diabetes Association (ADA) guidelines, an HbA1c of 6.5% or higher confirms the diagnosis of diabetes when repeated testing is done or corroborated with additional criteria.

The use of HbA1c as a diagnostic tool is advantageous because it allows for a more stable measure of glucose control, as it is less subject to the fluctuations seen in daily glucose levels. Additionally, it helps identify individuals at risk for diabetes and facilitates early intervention, which is crucial for managing the condition and preventing complications.

In summary, an HbA1c level of 6.5% is the standard threshold for diagnosing Diabetes Mellitus, aligning with current clinical guidelines on diabetes management and diagnosis.