Metabolic
Fasting Insulin
Normal Range:2-25 uIU/mL
Optimal Range:2-6 uIU/mL
What is Fasting Insulin?
Measures the amount of insulin in your blood after fasting. It is the earliest warning sign of insulin resistance, often rising years before glucose does.
Why Fasting Insulin Matters
Fasting insulin is the earliest predictor of metabolic dysfunction. Elevated levels indicate your pancreas is working harder to control blood sugar, even when glucose appears normal.
Symptoms of Low Fasting Insulin
- High blood sugar symptoms
- Fatigue
Symptoms of High Fasting Insulin
- Sugar cravings
- Hypoglycemia (shakiness)
- Weight gain
- Skin tags
Reference Ranges
| Range Type | Minimum | Maximum | Unit |
|---|---|---|---|
| Normal Range | 2 | 25 | uIU/mL |
| Optimal Range | 2 | 6 | uIU/mL |