What is hemoglobin a1c

The hemoglobin A1c glycated hemoglobin, glycosylated hemoglobin, HbA1c, or A1c test is used to evaluate a person's level of glucose control. The test shows an average of the blood sugar level over the past 90 days and represents a percentage. Ref: Classification and diagnosis of diabetes: Standards of medical care in diabetes Diabetes Care ;SS The reference ranges are applicable to adults. For pediatric patients please refer to published literature. This content does not have an English version.

This content does not have an Arabic version. Sections for A1C test About. Overview The A1C test is a common blood test used to diagnose type 1 and type 2 diabetes. More Information Diabetes Diabetic hyperosmolar syndrome Hyperglycemia in diabetes Prediabetes Type 1 diabetes Type 1 diabetes in children Type 2 diabetes Type 2 diabetes in children Show more related information.

Request an Appointment at Mayo Clinic. Share on: Facebook Twitter. Standards of Medical Care in Diabetes — Diabetes Care. Type 2 diabetes mellitus adult. Mayo Clinic; Accessed Jan.

You don't need any special preparations for an HbA1c test. Are there any risks to the test? What do the results mean? HbA1c results are given in percentages. Typical results are below.

Normal : HbA1c below 5. Is there anything else I need to know about an HbA1c test? References American Diabetes Association [Internet]. Common Terms; [updated Apr 7; cited Jan 4]; [about 2 screens]. Atlanta: U. American Association for Clinical Chemistry; c— Diabetes; [updated Dec 12; cited Jan 4]; [about 2 screens]. Hemoglobin A1c; [updated Jan 4; cited Jan 4]; [about 2 screens]. Mayo Foundation for Medical Education and Research; c—