Hemoglobin A1c testing

Hemoglobin A1c testing measures the average blood sugar levels over the past two to three months by assessing the amount of sugar attached to hemoglobin in red blood cells. Since red blood cells live about 120 days, the test provides a long-term view of blood sugar control, which is helpful for diagnosing and managing diabetes. A higher A1c indicates higher average blood sugar, increasing the risk of complications, while a lower A1c suggests better control. This test helps healthcare providers determine treatment effectiveness and make necessary adjustments.