Glycohemoglobin (HbA1c, A1c)

GHb (Glycohemoglobin) Test, HbA1c (Hemoglobin A1c), Hemoglobin A1c

What Affects the Test

Reasons you may not be able to have the test or why the results may not be helpful include:

• Having severe blood loss or a blood transfusion in the last 3 months.
• Having certain medical conditions, such as sickle cell anemia, hemolytic anemia, some types of thalassemia, and severe kidney disease.
• Having your spleen taken out. This changes the normal life cycle of red blood cells and A1c levels.

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Author:	Caroline Rea, RN, BS, MS	Last Updated: May 29, 2008
Medical Review:	Martin Gabica, MD - Family Medicine David C.W. Lau, MD, PhD, FRCPC - Endocrinology & Metabolism
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