Oral Disposition Index (DIo)
Oral disposition index DIo (Utzschneider 2009): the insulinogenic index (ΔI30/ΔG30) times fasting insulin sensitivity (1/I0); a lower value predicts higher future-diabetes risk.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Fasting insulin
- 8 mU/L
- 30-min insulin
- 60 mU/L
- Fasting glucose
- 90 mg/dL
- 30-min glucose
- 150 mg/dL
Result: Oral disposition index 0.108 — sensitivity-adjusted β-cell secretion; a lower value predicts higher future-diabetes risk.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Meaning
- Sensitivity-adjusted β-cell secretion; a lower DIo predicts higher future-diabetes risk.
What you enter
- Fasting insulin (I0)
- 30-min insulin (I30)
- Fasting glucose (G0)
- 30-min glucose (G30)
How this is calculated
- Formula
- Insulinogenic index = ΔInsulin(0–30) / ΔGlucose(0–30); DIo = insulinogenic index × (1 / fasting insulin).
Utzschneider KM, Prigeon RL, Faulenbach MV, et al. Oral disposition index predicts the development of future diabetes above and beyond fasting and 2-h glucose levels. Diabetes Care. 2009;32(2):335-341. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.