An A1C test measures the average amount of sugar in your blood over the past three months. Providers use it to diagnose diabetes and monitor diabetes management.

What Is the A1C Test? The A1C test can be used to diagnose diabetes or help you know how your treatment plan is working by giving you a picture of your average blood glucose (blood sugar) over …

May 15, 2024 · The A1C test—also known as the hemoglobin A1C or HbA1c test—is a simple blood test. Your A1C is used to diagnose prediabetes and diabetes, and monitor your progress.

Jun 17, 2024 · The hemoglobin A1c test tells you your average level of blood sugar over the past 2-3 months. It's also called HbA1c, the glycated hemoglobin test, or glycohemoglobin.

Jun 30, 2025 · Hemoglobin A1c (HbA1c) is a measure of average blood sugar. Learn how it’s measured, what’s considered normal HbA1c, what HbA1c level you’ll want to target if you have diabetes, and …

Feb 22, 2025 · For people living with diabetes, the test checks how well they manage blood sugar levels. The A1C test also is called the glycated hemoglobin, glycosylated hemoglobin, hemoglobin A1C or …

Apr 29, 2025 · This guide explains what A1C is, what counts as a normal or dangerous A1C level, and how you can lower your A1C through healthy lifestyle changes and, if needed, with medications …

Oct 1, 2025 · The A1C test measures blood sugar levels over the past two to three months. Normal A1C levels are lower than 5.7%, while 6.5% or above indicates type 2 diabetes.

Blood glucose levels fluctuate from hour to hour, day to day; but the A1C level reflects the overall average and is the best test to monitor blood glucose control in the past 3 months. The A1C test is …

Learn what the A1C test is, how it works and is used to diagnose and monitor type 2 diabetes and prediabetes, when it doesn’t work, and how A1C relates to eAG.