Understand the importance of HbA1c (Hemoglobin A1c) & its role in monitoring blood sugar levels. Know A1c charts, tests, levels, & normal ranges.

The A1C test for diabetes allows doctors to see glucose levels over a 2- to 3-month period. We’ll explain what your A1C test results mean.

Medically reviewed by Allison Herries, RDN An A1C test is used to diagnose and monitor diabetes by measuring the body's ...

Type A1 hemoglobin has subtypes, including A1C. As this is the most abundant subtype, it is a good marker for glucose control. The test uses a 3-month average because RBCs typically live for about ...

A hemoglobin A1C value of 5.6 percent or lower is considered normal. A value between 5.7 and 6.4 percent indicates prediabetes. A value of 6.5 percent or higher is consistent with diabetes.

The A1C test, which some people may also call the hemoglobin A1C, HbA1C, glycated hemoglobin, or glycohemoglobin test, measures the amount of sugar attached to hemoglobin in the blood.

The role of hemoglobin A1c (HbA1c) as a diabetes-screening test is not conclusively established. Those organizations that recommend diabetes screening do not recommend use of HbA1c as a screening ...