Key takeaways
- Fasting glucose under 100 is normal.
- A1C reflects about 3 months.
- A1C 5.7–6.4% is prediabetes.
- Only a doctor can diagnose.
- Lifestyle changes can help rising numbers.
Lab reports can be confusing. Here is what the most common blood sugar numbers mean.
Blood sugar ranges
| Test | Normal | Prediabetes | Diabetes |
|---|---|---|---|
| Fasting glucose | Under 100 mg/dL | 100–125 mg/dL | 126+ mg/dL |
| A1C | Below 5.7% | 5.7–6.4% | 6.5%+ |
| 2-hour glucose tolerance | Under 140 mg/dL | 140–199 mg/dL | 200+ mg/dL |
What each test means
Fasting glucose
Your blood sugar after at least 8 hours without food.
A1C
The percentage of red blood cells coated with sugar, reflecting your average over about three months.
Glucose tolerance test
How your body handles a sugary drink over two hours.
If your numbers are rising
- Talk to your doctor about next steps and how often to retest
- Focus on movement, especially after meals
- Build meals around vegetables, protein and fiber
- Aim for a healthy weight; even small losses help
- Prioritize sleep and stress management
Gluco Extend is designed to support healthy blood sugar levels already within the normal range, alongside healthy habits. It is not a treatment for prediabetes or diabetes.
Important: these ranges are for general education. Only your doctor can interpret your results and diagnose prediabetes or diabetes. Never change diabetes medication without medical advice.
Sources
- American Diabetes Association – "Understanding A1C" and "Diagnosis."
- CDC – "Diabetes tests."
- NIDDK – "Diabetes tests and diagnosis."
Common questions
What is a normal fasting blood sugar?
Under 100 mg/dL.
What A1C level is prediabetes?
5.7% to 6.4%.
Can a supplement treat prediabetes?
No, supplements support healthy levels; diagnosis and treatment come from your doctor.