Question: can hba1c be used to diagnose diabetes?
Answer: An HbA1c of 6.5% is recommended as the cut point for diagnosing diabetes. A value of less than 6.5% does not exclude diabetes diagnosed using glucose tests. Glycated haemoglobin (HbA1c) was initially identified as an “unusual” haemoglobin in patients with diabetes over 40 years ago (12).