Home » National Institutes Of Health » NIH » Science and Research » Understanding A1C Understanding A1C November 28, 2019 Medline-NIH Off National Institutes Of Health, NIH, Science and Research Source: American Diabetes AssociationRelated MedlinePlus Pages: A1C, Blood Sugar Read Original Article: Understanding A1C » Previous: Surgery for Ulcerative Colitis Next: Polyphasic Sleep: What Is It And Is It Healthy? About The Author Medline-NIH