A1C Average Blood Sugar Chart: Normal, Prediabetes, and Diabetes Ranges
The A1C test, or hemoglobin A1C or HbA1C, is critical in diabetes care. It measures the average blood sugar (Glucose) levels over the past two to three months by assessing the percentage of hemoglobin—a protein in red blood cells—that has glucose attached to it. Unlike daily finger-prick tests that provide a snapshot of blood sugar at a single moment, the A1C test offers a broader view of glycemic control. For individuals with diabetes, this long-term perspective helps healthcare providers evaluate how well their treatment plan works and adjust medications, diet, or lifestyle as needed. Consistently high blood sugar levels can silently damage blood vessels, nerves, and organs over time, increasing the risk of complications such as heart disease, kidney failure, vision loss, and neuropathy. Regular monitoring, whether through daily glucose checks or periodic A1C tests, empowers individuals to catch trends early and take action....