Hemoglobin A1C (HbA1c) Test: MedlinePlus Medical 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. Glucose is a type of sugar in your blood that …
A1C: What It Is, Test, Levels & Chart - Cleveland Clinic
Healthcare providers do A1C tests in one of two ways: A phlebotomist takes a blood sample from your vein and sends it to a lab for analysis (the most common form of the test). A provider gets a sample …
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 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 …
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 have diabetes, and …
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 …
Understanding A1C Test | ADA
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.