What A1C measures
Glucose in your blood sticks to hemoglobin in red blood cells. Because those cells live about three months, A1C reflects your average blood sugar over that time (NIDDK; MedlinePlus).
The chart
| A1C | Meaning | Estimated average glucose |
|---|---|---|
| 5.0% | Normal | about 97 mg/dL |
| 5.6% | Normal (upper) | about 114 mg/dL |
| 5.7–6.4% | Prediabetes | about 117–137 mg/dL |
| 6.5%+ | Diabetes range | about 140 mg/dL and up |
Category cutoffs from the CDC (CDC); estimated average glucose is calculated with the standard formula (28.7 × A1C − 46.7).
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See the Discount ›What can skew A1C
Iron-deficiency anemia, kidney failure, liver disease and some inherited hemoglobin variants can make A1C results false (NIDDK). Your doctor may use other tests too.
Talking with your doctor about A1C
Useful questions: What is my A1C, and what range should I aim for? How often should we retest? Is there any reason my A1C might be inaccurate? What changes would help most? Bring a list of supplements you take, including MetaGlucent, so your doctor has the whole picture. See MetaGlucent with medications and prediabetes diet plan.
How to move your A1C
It changes slowly: give any routine three months. Walking after meals, more fiber, fewer sugary drinks and modest weight loss are proven levers. See how to lower blood sugar naturally. MetaGlucent can support those habits; a 3- or 6-bottle package covers one or two A1C windows. See 6-bottle deal.
Start a 3-month MetaGlucent routine.
FAQ
How often should I check A1C?
Your doctor decides; people with prediabetes are often checked yearly, people with diabetes more often.
Can A1C go down in a month?
It reflects about three months, so changes show gradually.
Is 5.9 A1C prediabetes?
Yes, 5.7% to 6.4% is the prediabetes range (CDC).
Sources
- NIDDK: The A1C test and diabetes
- MedlinePlus: Hemoglobin A1C test
- CDC: Diabetes testing (A1C, fasting and glucose tolerance ranges)
General information, not medical advice. Prices and terms come from the official MetaGlucent order and return pages, checked October 30, 2026; the checkout page and the label on your bottle take priority. Read our disclaimer.
