Interpret Your Fasting Blood Glucose Results
Enter your FBG value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.
Medical Disclaimer
This AI-generated interpretation is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Results may vary based on individual health factors not captured here.
Always consult a qualified healthcare professional before making any health decisions. Read full disclaimer →
Fasting Blood Glucose Normal Ranges
Fasting blood glucose (FBG) measures blood sugar after at least 8 hours without food or caloric drink.
| Reference Range | Unit | Notes |
|---|---|---|
| 70 – 99 | mg/dL | Fasting normal |
| 100 – 125 | mg/dL | Prediabetes (impaired fasting glucose) |
Also reported in: mmol/L.Conversion factor: 1 mmol/L = 0.056 mg/dL.
Critical (Panic) Values
Critical Low: < 50 mg/dL. Critical High: > 500 mg/dL. Values outside these limits require immediate clinical attention.
Common Causes of High FBG
Common Causes of Low FBG
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