Description
The Insulin Blood Test measures the level of insulin in your blood. Insulin is a hormone produced by the pancreas that helps regulate blood sugar (glucose) by allowing your cells to absorb and use it for energy. This test can help assess how well your body is managing blood sugar and detect conditions related to abnormal insulin production.
Why It’s Done
- To evaluate insulin resistance, which can indicate risk for type 2 diabetes or metabolic syndrome.
- To help diagnose hyperinsulinemia (high insulin levels) or hypoinsulinemia (low insulin levels).
- To assess causes of low blood sugar (hypoglycemia).
- To monitor pancreatic function in certain conditions.
Symptoms and Conditions That May Lead to Testing
- Unexplained weight gain or difficulty losing weight
- Fatigue or excessive hunger
- Episodes of dizziness, shakiness, or confusion related to low blood sugar
- Family history of diabetes or metabolic disorders
Test Details
- Specimen: Blood sample
- Fasting: Recommended for most accurate results (usually 8–12 hours without food or drink except water)
- Results Interpretation:
- High insulin levels may indicate insulin resistance, prediabetes, type 2 diabetes, or pancreatic overproduction.
- Low insulin levels may suggest type 1 diabetes, pancreatic disorders, or certain rare conditions.
