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.

A1C is a simple blood test that healthcare providers use to: Detect prediabetes. Help diagnose Type 2 diabetes. Get an idea of how well your management plan is working if you have Type 2 diabetes or Type 1 diabetes. Your A1C level can help you and your provider know if you need to change your treatment strategy.

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. Find out more about the test, and your A1C goals.

What is the A1C test? The A1C is a blood test that tells you what your average blood sugar (blood glucose) levels have been for the past two to three months. It measures how much sugar is attached to your red blood cells. If your blood sugar is frequently high, more will be attached to your blood cells.

May 1, 2024 · An A1c test can determine a diagnosis of type 2 diabetes and also monitor your diabetes management. This article includes an A1c chart with sections based on age and sex.

If you have prediabetes, you should be checked for type 2 diabetes every one to two years. Results indicating prediabetes are: An A1C of 5.7–6.4%; Fasting blood glucose of 100–125 mg/dL; An OGTT two-hour blood glucose of 140–199 mg/dL; Preventing Type 2 Diabetes. You will not develop type 2 diabetes automatically if you have prediabetes.

Sep 4, 2024 · High A1C levels are a risk factor for diabetes and other complications. However, ideal and dangerous A1C levels can vary slightly between each individual. Lifestyle changes can help manage...

Mar 31, 2025 · The A1C test measures average blood sugar levels over the past three months and is an essential part of diagnosing and managing diabetes. An A1C test uses a standard blood draw, and it doesn’t ...

Dec 22, 2022 · Learn more about normal hemoglobin A1c by age to stay healthier and live longer (and consider an at-home HbA1c test). What Is the HbA1c Test? The HbA1c blood test measures how much blood glucose (sugar) is attached to your hemoglobin. A1C stands for glycated hemoglobin, a crucial marker in diabetes management.

Mar 27, 2025 · The A1C test shows average blood sugar levels over the past 2 to 3 months. It can help doctors diagnose diabetes and check how well treatment is working.