Normal HbA1c Levels Across Different Ages
Explore normal HbA1c levels by age group, from children to seniors. Understand how age affects blood sugar targets and what levels are considered healthy for each stage of life.


Maintaining healthy blood sugar levels is essential for overall well-being, especially for individuals with diabetes or those at risk of developing it. One of the key tests used to monitor long-term blood sugar control is the HbA1c (Hemoglobin A1c) test. This article will help you understand what HbA1c is, why it matters, and what normal levels look like across different age groups.
What is HbA1c?
HbA1c is a blood test that measures your average blood sugar levels over the past 2-3 months. Unlike daily glucose tests, which provide a snapshot of your blood sugar at a specific moment, HbA1c gives a broader picture of how well your body is managing glucose over time.
When sugar (glucose) enters your bloodstream, it attaches to hemoglobin (a protein in red blood cells). The more glucose in your blood, the higher your HbA1c level will be. The test result is given as a percentage—higher percentages indicate poorer blood sugar control.
Why is HbA1c Important?
Detects Diabetes & Prediabetes: Helps diagnose diabetes or prediabetes early.
Monitors Diabetes Management: For those with diabetes, it shows how well treatment is working.
Reduces Complications: Keeping HbA1c in check lowers the risk of diabetes-related complications (heart disease, nerve damage, kidney problems, etc.).
Normal HbA1c Levels by Age
While HbA1c targets are generally similar across age groups, slight variations exist based on health status, risk factors, and medical recommendations.
For Adults (18-65 years)
Normal: Below 5.7%
Prediabetes (at risk): 5.7% - 6.4%
Diabetes: 6.5% or higher
Note: If you have diabetes, your doctor may set a personalised target (usually below 7%). Some individuals (like those with heart disease) may need stricter control.
Get The Test Here
For Older Adults (Above 65 years)
Older adults may have slightly relaxed targets to avoid low blood sugar (hypoglycemia), which can be dangerous.
Healthy older adults: Below 7.5%
Those with multiple health issues: Below 8%
For Children & Teens
Normal: Below 5.7%
Prediabetes: 5.7% - 6.4%
Diabetes: 6.5% or higher
Note: Children with type 1 diabetes may have individualised targets set by their doctor.
Factors Affecting HbA1c Levels
Several factors can influence HbA1c results, including:
Diet & Lifestyle: High sugar intake, lack of exercise.
Medications: Insulin, diabetes drugs.
Health Conditions: Anaemia, kidney disease, pregnancy.
Age & Genetics: Some people naturally have slightly higher or lower levels.
Consult Top Specialists
How to Maintain Healthy HbA1c Levels?
If your HbA1c is high, small lifestyle changes can make a big difference:
1. Eat a Balanced Diet
Focus on whole grains, vegetables, lean proteins, and healthy fats.
Limit sugary foods, refined carbs, and processed snacks.
Control portion sizes to avoid blood sugar spikes.
2. Stay Active
30 minutes of moderate exercise (walking, swimming, cycling) daily helps improve insulin sensitivity.
3. Monitor Blood Sugar Regularly
If you have diabetes, check glucose levels as advised by your doctor.
4. Manage Stress & Sleep Well
Stress and poor sleep can raise blood sugar. Practice relaxation techniques like deep breathing, yoga, or meditation.
5. Take Medications as Prescribed
If you’re on diabetes medication, follow your doctor’s instructions carefully.
When to Get Tested?
Adults over 45: Get tested every 3 years (or earlier if at risk).
People with prediabetes: Test every 1-2 years.
Diabetes patients: Test every 3-6 months to monitor control.
Book Your HbA1c Test with Apollo 24|7
If you’re concerned about your blood sugar levels, getting an HbA1c test is quick and easy. Apollo 24|7 offers home sample collection and online reports, making it convenient for you to track your health.
Conclusion
Keeping your HbA1c in a healthy range is crucial for preventing diabetes complications. By eating well, staying active, and monitoring your levels, you can take control of your health. If you have any concerns, don’t hesitate to speak with a doctor—early action makes all the difference!
Consult Top Specialists
Consult Top Specialists

Dr. Swathi Reddy Perugu
General Physician/ Internal Medicine Specialist
7 Years • MBBS, MD (General Medicine)
Hyderabad
Health plus, Hyderabad

Dr. Rajib Ghose
General Practitioner
25 Years • MBBS
East Midnapore
VIVEKANANDA SEBA SADAN, East Midnapore

Dr. Sourav Kundu
General Physician/ Internal Medicine Specialist
9 Years • MBBS , MD (General medicine)
Kolkata
HealthYou Speciality Clinic & Diagnostics., Kolkata
Dr. Swagata Sircar
General Physician/ Internal Medicine Specialist
8 Years • MBBS, MD General Medicine
Kolkata
HealthYou Speciality Clinic & Diagnostics., Kolkata
(50+ Patients)
Dr. Anand Ravi
General Physician
2 Years • MBBS
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru