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STEP 2
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STEP 4
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STEP 5
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Frequently Asked Questions
Other tests that may be prescribed when the results of the Insulin, Fasting test are abnormal include a blood glucose, proinsulin, C-peptide, cortisol, and plasma β-hydroxybutyrate (BHOB) test.
The Insulin, Fasting test helps identify conditions like hypoglycemia (low blood glucose), hyperglycemia (high blood glucose), and insulinoma (the presence of an insulin-producing tumor in the islet cells of the pancreas)
Your fasting insulin level shows how much insulin your body makes without the influence of food. High levels may suggest insulin resistance. Low levels may indicate reduced insulin secretion.
High insulin levels in the blood can happen for many reasons. These include not being active, being overweight, getting older, eating too many carbs, or having a family history of diabetes. It can also be caused by pregnancy, poor sleep, health conditions like fatty liver or PCOS, hormone problems like Cushing’s syndrome or acromegaly, smoking, and certain medications like steroids, antipsychotics, or HIV drugs.
Low levels of insulin may occur in the blood due to type 1 diabetes, hypopituitarism (low secretion of pituitary hormones), and pancreatic diseases like pancreatitis or pancreatic cancer.