Print By Mayo Clinic Staff Request an appointment About Dec. 01, 2022 Print Show references American Diabetes Association, Professional Practice Committee. Standards of Medical Care in Diabetes — 2021. Diabetes Care. 2021; doi:10.2337/dc21-Sppc. AskMayoExpert. Type 2 diabetes mellitus (adult). Mayo Clinic; 2018. The A1C test & diabetes. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/diabetes/overview/tests-diagnosis/a1c-test. Accessed Jan. 6, 2021. Diabetes overview. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/diabetes/overview/all-content. Accessed Dec. 4, 2020. Related Diabetes Health foods Hyperglycemia in diabetes Prediabetes Type 1 diabetes Type 1 diabetes in children Type 2 diabetes Type 2 diabetes in children Show more related content News from Mayo Clinic Mayo Clinic Q & A: What to expect during a blood draw April 29, 2024, 12:46 p.m. CDT Diabetes isn't destiny for rural communities March 19, 2024, 02:51 p.m. CDT Mayo study uses electronic health record data to assess metformin failure risk, optimize care Feb. 10, 2023, 02:30 p.m. CDT Products & Services A Book: The Essential Diabetes Book A Book: The Mayo Clinic Diabetes Diet Show more products and services from Mayo Clinic Mayo Clinic in Rochester, Minnesota, has been recognized as the best Diabetes & Endocrinology hospital in the nation for 2024-2025 by U.S. News & World Report. Learn more about this top honor A1C testAbout PRC-20155623 Patient Care & Health Information Tests & Procedures A1C test