Guidance Concerning the use of Glycated Haemoglobin (HbA1c) for the diagnosis of Diabetes Mellitus An HbA1c value of 48 mmol/mol (6.5%) or more constitutes a positive result, suggesting the diagnosis of Diabetes mellitus. This test provides an alternative to traditional glucose-based methods of diagnosis; it does not replace them. The correct use of the test may facilitate earlier diagnosis of people with elevated mean blood glucose levels who are at increased risk of long-term diabetes-specific microvascular complications. HbA1c assessment will be used predominantly for the diagnosis of type 2 diabetes mellitus.
It is important that medical practitioners who elect to use the test for diagnostic purposes understand its nature, its limitations and its benefits. Following are the recommendation for HBA1C testing from Australian Diabetes Society 1. High-risk patients Only patients at…
