A1c and eAG

Also known as: Hemoglobin A1c; HbA1c; Glycohemoglobin; Glycated hemoglobin; Glycosylated hemoglobin

Formal name: A1c and estimated Average Glucose

At a Glance

Why Get Tested?

To monitor a person’s diabetes and to aid in treatment decisions

When to Get Tested?

When first diagnosed with diabetes and then 2 to 4 times per year

Sample Required?

A blood sample drawn from a vein in the arm or from a fingerstick

Test Preparation Needed?

None

This article was last reviewed on February 6, 2009. | This page was last modified on February 7, 2010.

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