The A1C blood test for diabetes, also known as the hemoglobin A1C test, HbA1c, or glycated hemoglobin test, shows how the body is handling blood sugar over a period of up to 3 months, and is extremely helpful for indicating if changes should be made in diabetes medication and diet. The hemoglobin in red blood cells moves oxygen through the body. When there’s a build-up of blood sugar, it attaches itself to the hemoglobin, making it “glycated.” The amount of sugar in the blood can then be determined by measuring how much sugar has attached itself to the hemoglobin. The A1C blood test for diabetes gives an overall picture of glucose levels, rather than the frequent changes before and after meals, which is accomplished by daily self-testing. It is recommended that both are done regularly for better diabetes management.

A1C Preparation: Getting Ready for Your Test

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