⚠️ Medical Disclaimer: These are general guidelines. Target values may vary individually. Always discuss your personal targets with your doctor.
Understanding blood sugar values is essential for everyone managing diabetes. But what do the different measurements actually mean? This guide explains all important values clearly.
Fasting Blood Sugar (Glucose)
Measured after at least 8 hours without eating. This is the most common test for diagnosing diabetes.
| Status | Fasting Blood Sugar (mg/dL) | Fasting Blood Sugar (mmol/L) |
|---|---|---|
| Normal | Below 100 | Below 5.6 |
| Prediabetes | 100 – 125 | 5.6 – 6.9 |
| Diabetes | 126 or higher | 7.0 or higher |
HbA1c – The Long-Term Blood Sugar Value
HbA1c shows the average blood sugar over the past 2-3 months. Unlike fasting glucose, it doesn't fluctuate daily and gives a more reliable picture of long-term blood sugar control.
| Status | HbA1c (%) | HbA1c (mmol/mol) |
|---|---|---|
| Normal | Below 5.7% | Below 39 |
| Prediabetes | 5.7% – 6.4% | 39 – 46 |
| Diabetes | 6.5% or higher | 48 or higher |
💡 For Diabetics: The general target for HbA1c in diabetics is below 7% (53 mmol/mol). However, individual targets may vary based on age, comorbidities, and diabetes duration. Discuss your personal target with your doctor.
Post-Meal Blood Sugar (Postprandial)
Measured 1-2 hours after a meal. This value shows how your body handles the carbohydrates from food.
| Status | Post-Meal Blood Sugar (mg/dL) | Post-Meal Blood Sugar (mmol/L) |
|---|---|---|
| Normal | Below 140 | Below 7.8 |
| Prediabetes | 140 – 199 | 7.8 – 11.0 |
| Diabetes | 200 or higher | 11.1 or higher |
How Often Should You Check Blood Sugar?
- Type 2 diabetes (no insulin): 1-3 times per week, including before and after meals
- Type 2 diabetes (insulin): Daily, multiple times per day
- Prediabetes: 2-4 times per month
Want a structured approach to blood sugar management?
Your Diabetes Roadmap includes blood sugar tracking templates and personalized guidance for stable values.
Discover Your Diabetes Roadmap →