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Haemoglobin A1c (HbA1c) - description and reference ranges

What is it?

Haemoglobin A1c (HbA1c) hamoglobin result is used to monitor average blood glucose levels (over the last 2 to 3 months). This can help with treatment and diagnosis in diabetes or identification of prediabetes.

Some of the glucose in your blood binds to haemoglobin. Haemoglobin is very important as it transports oxygen around the body, in the red blood cells. This binding of glucose and haemoglobin is called haemoglobin A1c (HbA1c) and is directly proportional to the average concentration of glucose in blood over the lifetime of red blood cells (2 to 3 months).

Reference ranges

If your indicative HbA1c concentration is lower than the reference range for our laboratory:

This generally implies that you do not have diabetes.

You can discuss this result with your GP.

If your indicative HbA1c is higher than the reference range for our laboratory:

If you have diabetes or your diabetes is not well managed, your blood glucose levels will be high, in turn causing higher HbA1c concentrations.

You can discuss this result with your GP.

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