Blood sugar ranges
| Test | Normal | Prediabetes | Diabetes |
|---|---|---|---|
| Fasting glucose | Below 100 mg/dL | 100-125 mg/dL | 126+ mg/dL |
| A1C | Below 5.7% | 5.7-6.4% | 6.5%+ |
Sources: MedlinePlus blood glucose test and MedlinePlus A1C test. Diagnosis requires a doctor and usually repeat testing.
What A1C tells you
A1C reflects your average blood sugar over about three months, so it isn't thrown off by one meal. It is a good way to track whether habits are working.
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The CDC says more than 2 in 5 American adults have prediabetes and it often goes undetected. The NIDDK says healthy eating, activity and modest weight loss can lower the risk of type 2 diabetes.
High and low readings
High blood sugar can cause thirst, frequent urination and fatigue. Low blood sugar can cause shakiness, sweating and confusion. See a doctor if you have these symptoms.
Staying in range
- Build meals with fiber and protein (MedlinePlus meal planning).
- Move after meals.
- Sleep well.
- Add daily support: Sugar Defender Pro includes chromium, gymnema and Panax ginseng. See Sugar Defender Pro.
See also high morning blood sugar.
FAQ
What is a normal fasting blood sugar?
Below 100 mg/dL, according to MedlinePlus.
What A1C is prediabetes?
5.7% to 6.4%.
How often should I get tested?
Ask your doctor; it depends on your age and risk factors.
Sources
- MedlinePlus: Blood glucose test
- MedlinePlus: Hemoglobin A1C test
- CDC: Prediabetes, your chance to prevent type 2 diabetes
- NIDDK: Preventing type 2 diabetes
- MedlinePlus: High blood sugar (hyperglycemia)
- MedlinePlus: Low blood sugar (hypoglycemia)
- MedlinePlus: Diabetes type 2, meal planning
General information, not medical advice. Prices and label details come from the official Sugar Defender Pro pages, checked October 20, 2026; the checkout page and the label on your bottle take priority. Read our disclaimer.
