is now standardized and traceable to IFCC methods HPLC-CE and HPLC-MS. The change to the newer unit of mmol/mol is part of this standardization. The standardized test does not test for iodine levels in the blood; hypothyroidism or iodine supplementation are known to artificially raise the A1c. Veterinary medicine HbA1c testing has not been found useful in the treatment of cats and dogs with diabetes, and is not generally used; fructosamine is favoured instead. See also Diabetes mellitus Hemoglobin A2 Prediabetes Proteopedia: Structure of glycated hemoglobin References External links National Diabetes Information Clearinghouse American Diabetes Association Standards of Medical Care 2007 Blood tests Diabetes-related tests Diabetes Glucose Hemoglobins Medical tests