HbA1c is an average of blood glucose levels over the previous 10-12 weeks and is usually tested every 3-6 months as part of routine diabetes management. The general target for most people with diabetes is less than 53 mmol/mol (7%). Targets may need to be adjusted depending on age, diabetes treatment and other health problems (for example children, elderly frail people). Your doctor will advise you of the HbA1c target that is right and safe for you.
There has been a change in the way HbA1c results are reported. Results for HbA1c have been dual reported since 2011 in both the ‘old’ measure which is in % (percentage) and the new measure which is mmol/mol (millimole per mol). The mmol/mol system has already been introduced in many countries around the world including the UK, Germany and New Zealand.
As from July 2013 Australia is following the recommendation of the International HbA1c Consensus Committee and will only report HbA1c in mmol/mol. Although the new numbering system looks very different to what we have become used to, the test is still giving the same information about blood glucose control over the last 10-12 weeks.