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 how well your …
Hemoglobin A1C (HbA1c) Test - MedlinePlus
What is a hemoglobin A1C (HbA1C) test? A hemoglobin A1C (HbA1C) test is a blood test that shows your average level of blood glucose, also called blood sugar, over the past two to three months.
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.
Hemoglobin A1c (HbA1c): What to know if you have diabetes or ...
Jun 30, 2025 · When someone with diabetes measures their blood sugar with an at-home blood sugar test, they get a snapshot of their blood sugar level at that moment in time. That number naturally …
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, hemoglobin A1C or …
All About the Hemoglobin A1C Test - Healthline
Feb 25, 2025 · The A1C test for diabetes allows doctors to see glucose levels over a 2- to 3-month period. We’ll explain what your A1C test results mean.
Understanding A1C Test | ADA - American Diabetes Association
Learn about the A1C test, a simple blood sugar test to diagnose prediabetes or diabetes, hemoglobin A1C and what do numbers mean, and how A1C relates to eAG.
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 normal ranges for …
What Is an HbA1c Blood Test and What Does It Measure?
1 day ago · The HbA1c, or Hemoglobin A1c, is a standard blood analysis used worldwide to monitor blood sugar control. This simple procedure provides healthcare providers with a long-term view of …
The A1C Test & Diabetes - NIDDK
Health care professionals can use the A1C test alone or in combination with other diabetes tests to diagnose type 2 diabetes and prediabetes. You don’t have to fast before having your blood drawn for …