A1C test - Mayo Clinic
www.mayoclinic.org › tests-procedures › a1c-testDec 1, 2022 · The A1C test is a common blood test used to diagnose type 1 and type 2 diabetes. If you're living with diabetes, the test is also used to monitor how well you're managing blood sugar levels. The A1C test is also called the glycated hemoglobin, glycosylated hemoglobin, hemoglobin A1C or HbA1c test.