Insulin (Fasting)


This fasting blood test is used to determine circulating levels of naturally produced Insulin. Insulin is a natural peptide hormone made by the pancreas that controls the level of glucose (sugar) in the blood. Insulin is required for cells to utilize glucose for energy. Cells cannot access glucose if insulin is not present.

Normally, insulin is provided within the body in a consistent amount in order to remove excess glucose from the blood. This prevents sugar from building up in the blood to become toxic. The natural production of insulin has been disrupted in disorders such as metabolic syndrome, diabetes and other carbohydrate metabolic processes. Physical symptoms of too much insulin and not enough sugar (hypoglycemia) are lightheadedness, sweating, trembling and in certain situations, symptoms may progress to loss of consciousness and shock.

Test Preparation For Optimal Results:

It is best to be rested and fasting for approximately 9-12 hours prior to lab collection (without food or liquids except water).

Disclaimer: Your health care provider should evaluate a deviation from normal ranges.