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  1. 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 …

  2. 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 …

  3. 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, …

  4. 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.

  5. The A1C Test & Diabetes - NIDDK

    The A1C test is a blood test that provides information about your average levels of blood glucose, also called blood sugar, over the past 3 months. The A1C test can be used to diagnose type 2 …

  6. 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 …

  7. A1C Testing for Prediabetes and Diabetes - GoodRx

    Aug 8, 2025 · Fortunately, there’s a quick and easy blood test to get screened — hemoglobin A1C (HbA1c or A1C). An A1C blood test estimates the level of glucose (sugar) in your blood over …

  8. The best test to measure your diabetes risk - Harvard Health

    6 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, …

  9. Understanding the A1C test for diabetes - Interwell Health

    Dec 14, 2025 · The A1C test is a simple blood test that shows your average blood sugar levels over the past two to three months. It’s commonly used to diagnose prediabetes, type 1 …

  10. A1C test: MedlinePlus Medical Encyclopedia

    May 20, 2024 · A1C is a lab test that shows the average level of blood sugar (glucose) over the previous 3 months. It shows how well you are controlling your blood sugar to help prevent …