Hemoglobin A1c (HbA1c) - PERLA Health

Hemoglobin A1c (HbA1c)

Testing for Hemoglobin A1c, also called HbA1c, reveals your average blood sugar levels in the past 2 to 3 months. When sugar enters your bloodstream, it attaches to hemoglobin, a protein that can be found on your red blood cells. If there’s a lot of sugar in your blood, you will have a lot of hemoglobin that is coated with sugar (which is also called glycated). The A1c test measures the percentage of blood cells with sugar-coated hemoglobin. Red blood cells are in the bloodstream for 3 month, which is why you can trace back your average blood sugar levels over up to 3 months. It is a common test to diagnose pre-diabetes and diabetes. The higher your A1c level is, the higher was your blood sugar level and the higher is the risk for complications because of it.


  1. Centers for Disease Control and Prevention (CDC). All About Your A1C. https://www.cdc.gov/diabetes/managing/managing-blood-sugar/a1c.html (accessed 3. August 2020)
  2. Mayo Clinic. A1C test. https://www.mayoclinic.org/tests-procedures/a1c-test/about/pac-20384643 (accessed 3. August 2020)
  3. WebMD. Hemoglobin A1c (HbA1c) Test for Diabetes. https://www.webmd.com/diabetes/guide/glycated-hemoglobin-test-hba1c (accessed 3. August 2020)

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