A1C: What It Is, Test, Levels & Chart - Cleveland Clinic
An A1C test measures the average amount of sugar in your blood over the past few months. Healthcare providers use it to help diagnose prediabetes and Type 2 diabetes and to monitor …
Hemoglobin A1C (HbA1c) Test: MedlinePlus Medical Test
An A1C test gives you an average level of your blood glucose level over the past two to three months. An A1C test may be used to screen for or diagnose: Type 2 diabetes. With type 2 …
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.
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 …
The best test to measure your diabetes risk - Harvard Health
4 days ago · The HbA1c test, which reflects average blood sugar levels over time, helps doctors follow your blood sugar trends. Having that information can determine your risk of diabetes, …
A1C test - Mayo Clinic
Feb 22, 2025 · An A1C test result shows the average blood sugar level over the past 2 to 3 months. The A1C test measures what percentage of hemoglobin in the blood is coated with …
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.
The A1C Test: Uses, Procedure, Results - Verywell Health
Dec 25, 2025 · The A1C test, also known as an HbA1C, hemoglobin A1C, glycated hemoglobin, or glycosylated hemoglobin test, is a blood test used to diagnose and monitor diabetes. It …
Hemoglobin A1c Test: Levels, Normal, High, Low, Chart, Schedule
Jul 18, 2025 · Hemoglobin A1c (HbA1c) test is used as a standard tool to determine the average blood sugar control levels over a period of three months in a person with diabetes. Learn …
Hemoglobin A1c Test (HbA1c) - eMedicineHealth
Hemoglobin A1c, often abbreviated HbA1c, is a form of hemoglobin (a blood pigment that carries oxygen) that is bound to glucose. The blood test for HbA1c level is routinely performed in …