The hemoglobin (hgb) A1c blood test measures the average blood glucose level over a three month period. By performing this test, we are able to make medication changes based on the trends in your blood glucose level.
What you ate the night before the HgbA1c blood test does NOT affect the result. The test can be done at any time of the day in a lab using a sample of blood from your arm. You do not need to be fasting to have an HgbA1c blood test done. It can also be known as HbA1c, hemoglobin A1c, A1c, glycosylated hemoglobin, glycohemoglobin or glycated hemoglobin.