What Are Normal Insulin Levels
Blood insulin level is the primary controller of blood glucose levels and the normal range of insulin concentrations in the blood is 5 to 20 microU per mL under fasting conditions. A physician may request a blood insulin measurement in order to help diagnose any number of conditions. For example, high insulin levels are most often seen with insulin resistance, type 2 diabetes, obesity, and less frequently in acromegaly, Cushing's syndrome, and insulinomas. Insulin levels may not be measurable in type 1 diabetics and may be very low in patients having hypopituitarism or pancreatic diseases such as chronic pancreatitis or pancreatic cancer.
- Although a patient can easily measure his/her blood glucose in their home, insulin levels must be determined by a certified clinical laboratory.
- Hypoglycemia is often characterized by sweating, palpitations, hunger, confusion, blurred vision, dizziness, fainting, and seizures.
- Some early symptoms of hyperglycemia may include increased thirst, headaches, blurred vision, frequent urination, and fatigue.