An A1C test is run quarterly, twice a year, or once a year, depending on how good or bad your control is; how good or bad your insurance is; and your provider’s approach to diabetes care.
Even in healthy, well-controlled patients, I like to run the test every quarter. If something is starting to change I want to jump on it right away. Remember: all diabetes is chronic and progressive and the body eventually adapts to all meds; they will lose their effectiveness.
Find out more about this book:The Born-Again Diabetic: The handbook to help you get your diabetes in control (again)