HbA1c is not a sure-fire tool for Diabetes diagnosis.At the European Association for the Study of Diabetes meeting on HbA1c for diagnosis, many physicians did not trust glycated hemoglobin levels alone to diagnose diabetes, despite ADA guidelines. High-risk, pre-diabetic patients could be left untreated with an HbA1c of less than 6.5%, and a fasting Glucose or a Glucose tolerance test …