What does an HbA1c test primarily measure?

The HbA1c test primarily measures average blood glucose levels over the past 2-3 months. This test reflects the percentage of hemoglobin in the blood that has glucose attached to it, known as glycosylated hemoglobin. Since red blood cells typically live for about 120 days, the HbA1c measurement provides a long-term view of blood glucose levels, making it an invaluable tool for monitoring diabetes management. It is particularly useful for assessing how well a person’s blood glucose levels have been controlled over time, rather than just capturing a momentary snapshot like a standard blood glucose test would.

This makes it especially crucial for healthcare providers when determining the efficacy of a treatment plan or making adjustments to medication for individuals with diabetes. By understanding this measurement, patients can better manage their condition and reduce the risk of complications associated with high blood sugar levels.