HbA1c (Glycated Haemoglobin)
Also known as: A1C, Glycosylated Haemoglobin, 3-month sugar test
HbA1c shows your average blood sugar over the past 2-3 months and is used to diagnose and monitor diabetes.
Why it's done
- Diagnose diabetes
- Monitor diabetes control
What it measures
Percentage of haemoglobin with glucose attached.
Preparation
No fasting needed.
Normal range
Normal below 5.7 percent; prediabetes 5.7-6.4 percent; diabetes 6.5 percent or more
Understanding results
Most people with diabetes aim for below 7 percent, as agreed with their doctor.
Ordered by
Frequently asked questions
Why is the HbA1c (Glycated Haemoglobin) test done?
Diagnose diabetes, Monitor diabetes control
How do I prepare for HbA1c (Glycated Haemoglobin)?
No fasting needed.
What is the normal range for HbA1c (Glycated Haemoglobin)?
Normal below 5.7 percent; prediabetes 5.7-6.4 percent; diabetes 6.5 percent or more
Medically reviewed by
Medical review pending
Last updated
9 October 2026
Sources
- ICMR standard treatment workflows
- Reference ranges vary by laboratory - always read your report with your doctor
This information is for general awareness and does not replace advice from a qualified doctor. Do not start, stop or change any medicine without medical advice.