From Dayton, Ohio, USA:
My twelve year old son was diagnosed 2 1/2 years ago. Twice a year his doctor does a C-peptide test. The reference range is 0.5 - 2.0 ng/mL. He is not required to fast or make any other preparations for the test. Each time he falls in the normal range, about 0.83. What exactly does the test measure and what does falling below the normal range mean?
C-peptide measurement is an indication of how much natural insulin your son's body is making. However, it only really means anything if the body is challenged with a glucose load. This would then indicate what sort of proportion of insulin requirement is being met naturally. About 10% of individuals with insulin dependent diabetes will go on producing some c-peptide indefinitely. I'm not clear why your doctor is measuring this regularly; ask him to explain.
Original posting 3 Nov 96
Last Updated: Tuesday April 06, 2010 15:08:52
This Internet site provides information of a general nature and is designed for educational purposes only. If you have any concerns about your own health or the health of your child, you should always consult with a physician or other health care professional.
This site is published by T-1 Today, Inc. (d/b/a Children with Diabetes), a 501c3 not-for-profit organization, which is responsible for its contents. Our mission is to provide education and support to families living with type 1 diabetes.
© Children with Diabetes, Inc. 1995-2017. Comments and Feedback.