Glycosylated Hemoglobin Test
(HbA1c; GHb; Glycohemoglobin; Diabetic Control Index)
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Reasons for Test
What to Expect
Description of Test
How Long Will It Take?
Will It Hurt?
- Changing your medicines
- Increasing your level of physical activity
- Modifying your diet
Call Your Doctor
- Bleeding from the puncture site
- Red, swollen, or painful puncture site
- If you have not heard from your doctor in 1-2 weeks
American Diabetes Association http://www.diabetes.org/
National Diabetes Education Program http://ndep.nih.gov/
Canadian Diabetes Association http://www.diabetes.ca/
Health Canada http://www.hc-sc.gc.ca/index-eng.php
A1C Test. Mayo Clinic website. Available at: http://www.mayoclinic.com/health/a1c-test/MY00142 . Updated January 21, 2011. Accessed July 31, 2012.
American Diabetes Association. Standards of medical care in diabetes—2008. Diabetes Care . 2008;31:S12-S54.
Aronow WS, Ahn C, Weiss MB, Babu S. Relation of increased hemoglobin A1c levels to severity of peripheral arterial disease in patients with diabetes mellitus. Am J Cardiol . 2007;99:1468-1469.
Check your hemoglobin A1c IQ. National Diabetes Education Program website. Available at: http://nfb.org/Images/nfb/Publications/vodold/vspr9905.htm . Accessed July 31, 2012.
A new number. American Diabetes Association website. Available at: http://forecast.diabetes.org/magazine/features/new-number . Accessed July 31, 2012.
Pradhan AD, Rifai N, Buring JE, Ridker PM. Hemoglobin A1c predicts diabetes but not cardiovascular disease in nondiabetic women. Am J Med . 2007;120:720-727.
Saudek CD, Herman WH, Sacks DB, et al. A new look at screening and diagnosing diabetes mellitus. J Clin Endocrinol Metab . 2008;93:2447-2453.
Standards of medical care in diabetes mellitus. American Diabetes Association website. Available at: http://care.diabetesjournals.org/content/26/suppl%5F1/s33.full . Accessed July 31, 2012.
- Reviewer: Kim Carmichael, MD
- Review Date: 09/2013 -
- Update Date: 09/30/2013 -