Is your A1C accurate
- srisdietclinic01
- Mar 23
- 1 min read
Glycated Hemoglobin (A1C) is a reliable test for assessing long-term glucose control. However, several factors can affect the accuracy of the results.
Falsely Elevated HbA1c:
1. Extended RBC Lifespan: Conditions such as splenectomy or certain anemias prolong the lifespan of RBCs, allowing more time for glycation.
2. Iron Deficiency Anemia: Affects RBC turnover, leading to higher HbA1c levels.
3. Uremia: Kidney failure results in carbamylated hemoglobin, which can be mistaken for glycated hemoglobin.
4. Hyperbilirubinemia: Elevated bilirubin can interfere with some HbA1c tests.
5. Alcoholism: Chronic alcohol consumption impacts RBC metabolism, raising HbA1c.
6. Lead Poisoning: Extends RBC lifespan, resulting in higher HbA1c.
7. High-Dose Aspirin: Prolonged use can increase HbA1c levels.
8. Hemoglobin Variants (e.g., HbF): Certain variants can affect HbA1c measurement.
Falsely Reduced HbA1c:
1. Reduced RBC Lifespan: Conditions like hemolytic anemia or sickle cell disease decrease the time for glycation.
2. Recent Blood Loss/Transfusion: Introduces younger RBCs with less glycation.
3. Chronic Liver Disease: Shortens RBC lifespan, resulting in lower HbA1c.
4. Vitamin E Supplementation: High doses may decrease glycation.
5. Erythropoietin Therapy: Increases the proportion of younger RBCs, reducing HbA1c.
6. Hemoglobin Variants (e.g., HbS, HbC): Certain variants can interfere with tests, causing underestimation.
7. Pregnancy: Enhanced RBC turnover reduces HbA1c levels.
8. Hypertriglyceridemia: High triglyceride levels can interfere with tests.
Next time do not google your results. Speak to your healthcare provider and work on your A1C
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