C-Peptide

Connecting Peptide Assay (C-Peptide), Insulin C-Peptide

How To Prepare

You may be asked to stop eating and drinking for 8 hours before having this blood test.

Insulin and some oral medicines used to treat type 2 diabetes can change the test results. Your doctor may ask you to stop these medicines before your blood test.

Talk to your doctor about any concerns you have regarding the need for the test, its risks, how it will be done, or what the results will mean. To help you understand the importance of this test, fill out the medical test information form (What is a PDF document?).

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Author:	Caroline Rea, RN, BS, MS	Last Updated: July 28, 2008
Medical Review:	Caroline S. Rhoads, MD - Internal Medicine Alan C. Dalkin, MD - Endocrinology
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