A1C: What It Is, Test, Levels & Chart - Cleveland Clinic
Learn how the A1C test works and what the results mean. What is an A1C test? An A1C test measures the average amount of glucose (sugar) in your blood over the past three months. …
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, …
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 levels correlate with average levels of glucose in the blood over an approximately three-month time. Normal ranges for hemoglobin A1c in people without …
Hemoglobin: A1C Test, Range, and Normal Levels - WebMD
Jun 17, 2024 · The hemoglobin A1c test tells you your average level of blood sugar over the past 2-3 months. It's also called HbA1c, the glycated hemoglobin test, or glycohemoglobin.
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 …
Hemoglobin A1c - What You Need to Know - Drugs.com
Jan 6, 2026 · A hemoglobin A1c is a blood test that measures your average blood sugar level for the past 2 to 3 months. It is also called an HbA1c or glycohemoglobin test. An A1c test can …
The A1C Test & Diabetes - NIDDK
Glucose attaches to or binds with hemoglobin in your blood cells, and the A1C test is based on this attachment of glucose to hemoglobin. The higher the glucose level in your bloodstream, …
Hemoglobin A1C (HbA1c) Test: MedlinePlus Medical Test
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 …
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 …