Which blood test measures the average blood sugar levels over the past two to three months?
Show answer
A1C test
The HbA1c test measures the percentage of blood sugar attached to hemoglobin, the iron-containing protein in red blood cells. Because red blood cells live for about three months, this test provides a reliable average of blood sugar levels over that entire period rather than just a single moment.
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- What blood test provides an average of a patient's blood sugar levels over a period of two to three months?