What is A1C?

A1C is a blood test. It shows the average levels of blood sugar over the past 3 months. It can be used to diagnose type 2 diabetes and prediabetes. It is used for diabetes management.

What do the results show?

The higher the percentage, the higher the blood sugar levels.

  • Normal: less than 5.7%
  • Prediabetes: 5.7-6.4%
  • Diabetes: greater than 6.5%
  1. The A1C Test & Diabetes. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/diagnostic-tests/a1c-test. Published April 1, 2018. Accessed January 24, 2021.