Normal Blood Sugar Level Chart (Fasting, After Meal & HbA1c)
One of the most common questions for anyone with diabetes — or worried about it — is simple: what is a normal blood sugar level? This guide gives clear target ranges for fasting, after meals, and HbA1c, plus what the numbers mean.
বাংলা সারাংশ: খালি পেটে স্বাভাবিক সুগার সাধারণত ৪–৬ mmol/L, খাবারের ২ ঘণ্টা পর ৮ mmol/L-এর নিচে থাকা ভালো। আপনার ব্যক্তিগত লক্ষ্য চিকিৎসকের সাথে ঠিক করে নিন।
Note: Targets vary by person (age, pregnancy, other illness, medication). Use this chart as a general guide and confirm your personal targets with your doctor.
Blood sugar target chart (general guide)
| When tested | Normal (no diabetes) | Common target with diabetes |
|---|---|---|
| Fasting / before meal | 4.0–5.4 mmol/L (70–99 mg/dL) | 4.0–7.0 mmol/L (80–130 mg/dL) |
| 2 hours after a meal | under 7.8 mmol/L (140 mg/dL) | under 8.5–10 mmol/L (per your doctor) |
| HbA1c (3-month average) | below 5.7% | often around 7% or lower |
mmol/L is the unit most commonly used in Bangladesh; mg/dL is shown for reference.
What the numbers mean
- HbA1c shows your average sugar over ~3 months — the best measure of long-term control. Many aim for around 7%, but your doctor sets your target.
- Fasting sugar is measured first thing in the morning before eating.
- Post-meal (2-hour) shows how your body handles food.
How to check accurately at home
The only way to know your own numbers is to test with a reliable meter and good technique.
Wash and dry your hands, use an unexpired strip, apply a full drop of blood, and record the result with the time and whether it was before or after a meal. Keep a glucometer and test strips at home so you can track trends, not just single readings.
When to see a doctor urgently
- Very high readings with symptoms (excess thirst, frequent urination, drowsiness).
- Very low readings (below 4 mmol/L) with sweating, shaking, or confusion — treat low sugar quickly with fast carbs and seek help.
- Consistently high numbers despite medication.
Frequently asked questions
What is a dangerous blood sugar level?
Persistently very high readings, or lows under 4 mmol/L with symptoms, need prompt medical attention. Discuss your personal danger zones with your doctor.
How often should I test?
It depends on your treatment. People on insulin usually test more often. Your doctor will advise a schedule.
Is fasting or HbA1c more important?
Both matter. HbA1c shows long-term control; daily readings show what's happening right now.
General information, not medical advice. Confirm your target ranges and testing plan with your doctor. / এই তথ্য সাধারণ; চিকিৎসকের পরামর্শ নিন।
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