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Professional Development News 


The use of Glycated Haemoglobin (HbA1c) in the diagnosis of Type 2 diabetes

Recently there has been an additional method of diagnosing Type 2 Diabetes Mellitus in adults, alongside a traditional fasting glucose and/or oral glucose tolerance test. Now glycated haemoglobin or HbA1c can be used to diagnose Type 2 Diabetes at the level of 6.5% (48mmol/mol) in adults (excluding pregnancy). This is in accordance with the World Health Organization (2011) guidelines which are endorsed by Diabetes UK. Similar to previous guidelines, if the HbA1c is raised then this should be repeated on a separate occasion in asymptomatic individuals to rule out laboratory errors on the first reading. Different localities may be using HbA1c, glucose testing or both to diagnose Type 2 Diabetes.


Abbreviated Report of a World Health Organization Consultation. Use of Glycated Haemoglobin (HbA1c) in the Diagnosis of Diabetes Mellitus. Geneva: World Health Organization. 2011.

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