Font Size
A
A
A

Hemoglobin A1c (HbA1c)

What is HbA1c?

Patient Comments

Hemoglobin is the oxygen-carrying pigment that gives blood its red color and is also the predominant protein in red blood cells. About 90% of hemoglobin is hemoglobin A (the "A" stands for adult type). Although one chemical component accounts for 92% of hemoglobin A, approximately 8% of hemoglobin A is made up of minor components that are chemically slightly different. These minor components include hemoglobin A1c, A1b, A1a1, and A1a2. Hemoglobin A1c (HbA1c) is a minor component of hemoglobin to which glucose is bound. HbA1c also is sometimes referred to as glycosylated or glycosylated hemoglobin or glycohemoglobin.

Medically Reviewed by a Doctor on 7/30/2014

Must Read Articles Related to Hemoglobin A1c (HbA1c)

Diabetic Eye Disease
Diabetic Eye Disease Diabetic eye disease is a complication from diabetes. Types of diabetic eye disease include background diabetic retinopathy, nonproliferative diabetic retinopat...learn more >>
Diabetic Foot Care
Diabetic Foot Care Read about diabetic foot care. Causes of foot problems in people with diabetes include footwear, nerve damage, poor circulation, trauma, infections, and smoking...learn more >>
Diabetic Ketoacidosis
Diabetic Ketoacidosis Diabetic ketoacidosis (DKA) occurs when a person with diabetes becomes dehydrated. Causes of diabetic ketoacidosis include infection, missed insulin, or newly d...learn more >>

Patient Comments & Reviews

The eMedicineHealth doctors ask about Hemoglobin A1c (HbA1c):

Hemoglobin - Treatment

Please describe how monitoring your hemoglobin levels has helped with the treatment of your condition.

Hemoglobin Levels - Experience

Please describe your experience with hemoglobin levels.





Read What Your Physician is Reading on Medscape

Retinopathy, Diabetic, Background »

Diabetes mellitus (DM) is a major medical problem throughout the world.

Read More on Medscape Reference »


Medical Dictionary