The A1C (HBA1C) test for diabetes is used to measure blood glucose control for the past 2.3 months, to determine how well a person is managing their diabetes. For those without diabetes, A1C range of 4.5 to 6 percent is considered normal. The higher the number is, the more uncontrolled the diabetes. It is recommended that even people who have good control over their diabetes should take the test at least twice a year, using the results to adjust medications and diet, if necessary. Those with greater concerns or problematic symptoms should be tested every three months. It is still important to test blood sugar levels daily; this does not replace daily testing.

How Does an A1C Test Work?

The test examines the hemoglobin in your blood to show where you fit into the diabetes A1C range. This is a substance in the red blood cells that carries oxygen …