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What is proinsulin test? Where ever I read it's written it helps in diagnosing pancreatic cancer.

2 Doctors Answered
This blood test measures proinsulin, a building block for insulin. To turn food into energy, your pancreas makes proinsulin. Proinsulin, in turn, is made into insulin and another protein called C-peptide. Measuring proinsulin in your blood can help figure out your risk for type 1 or type 2 diabetes.type diabetes
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Proinsulin is the precursor of insulin & C-peptide and its levels may be elevated in patients with insulin producing Islet cell tumors. This assay is useful as a part of the diagnostic workup of suspected Insulinoma, PC1/3 deficiency and in patients with suspected Proinsulin mutations.
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