Enter your fasting blood glucose and blood ketone readings to calculate your GKI and identify your metabolic zone.
| GKI | Zone | Description |
|---|---|---|
| > 9 | Glucose Driven Metabolism |
Elevated glucose with very low or no ketone production. Insulin signaling is high and the body has no ability to use fat for fuel, with no metabolic flexibility. |
| 9 | First Sign of Ketosis |
Entry level ketosis. Primary fuel source remains glucose, but the body is learning to flip the switch from glucose to fat. |
| 6 | Moderate Ketosis |
The body is becoming metabolically flexible and fat adapted. Beta-hydroxybutyrate (BHB), the ketone produced by the liver, is being produced in meaningful amounts and cellular recycling (autophagy) begins to ramp up. |
| 3 | Deep Ketosis |
Fat oxidation is meaningfully improved, cellular recycling increases and insulin levels are low. AMPK (mitochondrial energy) production rises alongside higher BHB output. |
| 1 | High Therapeutic Ketosis |
High fat burning, cellular recycling and clean up. Low insulin environment. |
| < 1 | Maximum Therapeutic Ketosis* |
The highest level of fat oxidation, cellular recycling (autophagy) and inflammation reduction, with strong stem cell activation. *Do not remain in this zone for more than 1–2 days without direction and guidance from your healthcare provider. |
GKI = (Blood glucose in mmol/L) ÷ (Blood ketones in mmol/L) · Developed by Dr. Thomas Seyfried · This tool is for educational and monitoring purposes only and is not a medical diagnostic.