Insulin
Disclaimer: Information on this page is for educational purposes. Consult a physician to interpret your test results. Lissa Health helps track biomarker trends but does not replace medical advice.
What This Test Measures
Insulin is the pancreatic hormone lowering glucose. Fasting insulin reflects insulin resistance in metabolic syndrome.
HOMA-IR index (insulin × glucose) assesses insulin sensitivity.
High insulin during hypoglycemia suggests insulinoma or exogenous insulin.
Normal Ranges
| Group | Reference Range |
|---|---|
| Men | 2.6–24.9 µIU/mL fasting |
| Women | 2.6–24.9 µIU/mL |
| Children | 2.0–20.0 µIU/mL |
Reference ranges may vary by laboratory and assay method.
Causes of High Levels
- Insulin resistance
- Obesity
- Type 2 diabetes
- Insulinoma
- Insulin secretagogues
Causes of Low Levels
- Type 1 diabetes
- Late-stage pancreatic failure
Test Preparation
- Strict fasting 8–12 hours
- Stable weight
- Report hypoglycemia episodes
Related Biomarkers
| Biomarker | Relationship |
|---|---|
| Glucose | HOMA-IR calculation |
| HbA1c | Long-term glucose control |
| Triglycerides | Metabolic syndrome |
FAQ
How often should I take this test?
In metabolic syndrome — at diagnosis.
What should I do if my result is abnormal?
High fasting insulin — lifestyle intervention; hypoglycemia + high insulin — urgent endocrine workup.
Last updated: June 2026