how does a blood donation 60 days prior to hemoglobin A1C test affect results?

Answer 1

Hgb A1c is not a dilutional lab exam, meaning that if you add enough saline you can become hypotnatremic (low sodium), the concentration of Hgb A1c will not be effected by the removal of a pint of blood especially after 60 days.

Answer 2

Because the glycosylated hemoglobin test takes basically a snap shot of your glucose control over the last 60-90 days any blood donation given in that time would be removing some of the red blood cells that you rely on for an accurate test.

The way it works is that when your blood sugar is not controlled some of the hemoglobin in your blood stream binds to free floating glucose. So when you have the A1C test done, it is a measure of the percentage of Hgb that is glycosylated. Removing any significant amount of the blood would distort this value.

Answer 3

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