Glucose higher than typical but below the diabetes threshold, often reversible.
Prediabetes means glucose is elevated but not yet in the diabetes range: an A1C of 5.7–6.4%, or fasting glucose of 100–125 mg/dL (5.6–6.9 mmol/L). It often has no symptoms.
It's a signal, not a sentence: many people return to typical ranges through changes in diet, movement, and weight.
General information, not medical advice. Browse the full glossary or the glycemic index of foods.
Learn what the reference numbers mean, then track your own logged readings and their share in your selected range. GMI and estimated A1C are withheld when source and coverage are unvalidated.
Educational content maintained by the SteadyRange. Source and terminology check: September 30, 2026. Independent clinical review is pending; no clinical reviewer credentials are claimed.