Glycosylated Hemoglobin(HgbA1c) Lab Values
Aug 21, 2023•3 min
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Episode description
Normal 5.6-7.5 % of total Hgb
Indications
- Assess control of blood sugars over a several month time frame
- Diagnose Diabetes Mellitus (DM)
Description
Glycosylated Hemoglobin (HbA1c) is the combination of glucose and hemoglobin. When glucose is elevated in the blood the amount of glycosylated hemoglobin increases proportionally. A red blood cells lifespan is about 4 months, so you can get an idea of blood sugar control over the last several months.
What would cause increased levels?
- Poorly controlled Diabetes Mellitus(DM)
- Non-Diabetic Hyperglycemia:
- Stress
- Cushing Syndrome
- Pheochromocytoma
- Corticosteroid Therapy
What would cause decreased levels?
- Renal failure
- Blood loss
- Hemolytic anemia
- Sickle cell anemia
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