
A1C: What It Is, Test, Levels & Chart - Cleveland Clinic
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.
Understanding A1C Test | ADA - American Diabetes Association
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 …
A1C Test for Diabetes and Prediabetes | Diabetes | CDC
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.
A1C test - Mayo Clinic
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, …
The A1C Test & Diabetes - NIDDK
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.
What Is A1c? - Kaiser Permanente
Jul 7, 2025 · An A1c test is a blood test that checks your average blood sugar level over the past 2 to 3 months. This test also is called a glycohemoglobin test or a hemoglobin A1c test. The …
A1C: What It Is and What Normal Levels Are - Health
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.
A1C levels: Dangerous vs normal and how to lower It? - Drugs.com
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 …
Hemoglobin A1c (HbA1c): What to know if you have diabetes or ...
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 …
All About the Hemoglobin A1C Test - Healthline
Feb 25, 2025 · A1C levels refer to the amount of hemoglobin in your blood that has glucose attached to it, which can be useful for monitoring blood sugar levels over time.