HbA1cblood
Glycated Haemoglobin
Shows your average blood sugar over the past 2–3 months.
What it measures
The percentage of haemoglobin coated with sugar (glucose).
Why it is ordered
To diagnose and monitor diabetes and pre-diabetes.
How to prepare
No fasting required; can be done any time of day.
What happens during the test
A small blood sample is drawn from a vein.
Normal ranges
| Group | Normal range |
|---|---|
| Normal | ≤ 5.7 % |
| Diabetes | ≥ 6.5 % |
| Prediabetes | 5.7 – 6.4 % |
Ranges vary slightly between laboratories.
What abnormal results may mean
Higher values indicate poorer long-term blood-sugar control and higher diabetes risk.
Related conditions: Diabetes, Pre-diabetes
Related tests: Fasting Blood Glucose, Postprandial Glucose
⚠️ Important: Abnormal results do not mean you have a disease. Always discuss your results with your doctor.