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The Question
Tue Mar 27 11:58:04 UTC 2012

Insulin test
Asked By: bernadette2  
Category: Insulin

Background Info Hide
Thank you Liz for getting back to me so quickly. I am anxious to get my tests results back to see if I have improved, especially the HGB and kidney function. I would very much like to request an insulin test be done so I know exactly how much insulin is in my body. What benefit would that give me?
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Expert Answers (1)
2012-03-28 17:54:18.0


Thanks for the follow-up question.

Measured by a blood test, C-peptide level indicates how much insulin is released from the beta islet cells of the pancreas. C-peptide is released in equal amounts to the amount of natural endogenous (internal source) insulin. Bottled insulin does not contain C-peptide and using it suppresses natural insulin release.

There are some evidence that suggests early insulin treatment may keep beta cells producing insulin, at least for a while longer.

The normal fasting range of C-peptide is between 0.78 - 1.89 ng/ml (0.26 - 0.62 nmol/L SI unit). Lab standards may vary. A low C-peptide level suggests LADA (Latent Autoimmune Diabetes in Adults), also called type 1.5 diabetes.

C-peptide levels change continually in relation to a blood glucose load. After eating, the blood glucose level increases. Insulin would normally respond to bring the blood glucose level down. There would be a higher level of C-peptide in the blood.

What is the benefit of the C-peptide test?

  • It can serve as a basis for comparison. What changes occur in insulin release over time?
  • Insurance providers routinely use C-peptide testing to determine if a patient qualifies to receive coverage for insulin pump therapy.

    Here is another discussion on managing LADA!

    Take care.

  • Answered By: Liz Quintana
    Accreditations: EdD, RD, LD, CDE
    Sources Show

    Community Answers (1)
    2012-11-15 17:28:37.0

    test form rupal
    Answered By: apazidis

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