What is HbA1c?
HbA1c (glycated haemoglobin) is a blood test that shows your average blood glucose level over the previous two to three months. Glucose in your blood attaches to haemoglobin in your red blood cells, and because red blood cells have a roughly 120-day lifespan, the amount of glycated haemoglobin reflects your average exposure to glucose over that period.
This makes HbA1c a useful tool for screening for type 2 diabetes, supporting diagnosis, and monitoring how well blood sugar is being managed in people with established diabetes. It is not affected by what you ate this morning, which is why fasting is not required.
When an HbA1c test is ordered
Your GP may recommend HbA1c if you have risk factors for diabetes such as a family history of type 2 diabetes, overweight or obesity, high blood pressure, polycystic ovary syndrome, a history of gestational diabetes, or if you are aged 40 or above. Australian guidelines also support routine screening for certain higher-risk populations.
If you are experiencing symptoms such as persistent thirst, frequent urination, unexplained fatigue, or unintentional weight loss, your GP may also order an HbA1c alongside other investigations. For people with confirmed type 2 diabetes, HbA1c is a core monitoring test.
How to get an HbA1c referral online
Book a telehealth appointment with a NewDoc GP and discuss your risk factors, any symptoms, or your ongoing diabetes management. If your GP determines an HbA1c is clinically appropriate, the pathology referral will be emailed to you after the consultation. You then attend any pathology collection centre in Australia for the blood draw at a time that suits you.
Your GP may also order other tests alongside HbA1c, such as a lipid panel to assess cardiovascular risk. The consultation is bulk billed for eligible Medicare patients, and the pathology tests are covered by Medicare when ordered on clinical grounds.
What to expect at the collection centre
Because HbA1c does not require fasting, you can attend the pathology collection centre at any time during opening hours. Most centres accept walk-ins or allow you to book ahead. The blood draw itself is typically brief, and you can eat and drink normally before and after.
Results are returned to your NewDoc GP, usually within a few business days. Your GP will then contact you to discuss the findings and any next steps. Staying well hydrated before your appointment can make the blood draw easier.
Understanding your HbA1c results
Your NewDoc GP will interpret your HbA1c in the context of your other tests, symptoms, and risk factors. A result in the pre-diabetes range may prompt lifestyle advice around nutrition, physical activity, and weight. A result consistent with diabetes usually requires a second confirmatory test, unless clear diabetes symptoms are present.
If a diagnosis of type 2 diabetes is confirmed, your GP will discuss management options, which may include lifestyle changes, medication, and ongoing monitoring. Your GP may also recommend a chronic disease management plan to coordinate allied health input, subject to Medicare eligibility.
When telehealth may not be suitable
Telehealth is well suited to arranging HbA1c pathology referrals, discussing results, and reviewing ongoing diabetes care. However, if you develop symptoms such as severe dehydration, confusion, rapid breathing, or significant illness on top of known diabetes, you should seek urgent in-person care. Book a bulk billed telehealth consultation to discuss whether an HbA1c or broader review is appropriate for you.
References
- HbA1c test, Healthdirect Australia
- Management of type 2 diabetes: A handbook for general practice, Royal Australian College of General Practitioners
- HbA1c, Diabetes Australia
This content is informational and does not replace individual medical advice. For personal assessment, book a consultation with your GP. In emergencies, call 000.
Last reviewed 22 April 2026. Editorial policy