Mobile Site ›

Test Catalog

Test ID: CPR    
C-Peptide, Serum

NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.


Useful For Suggests clinical disorders or settings where the test may be helpful

Diagnostic workup of hypoglycemia:

-Diagnosis of factitious hypoglycemia due to surreptitious administration of insulin

-Evaluation of possible insulinoma

-Surrogate measure for the absence or presence of physiological suppressibility of endogenous insulin secretion during diagnostic insulin-induced hypoglycemia (C-peptide suppression test)


Assessing insulin secretory reserve in selected diabetic patients (as listed below) who either have insulin autoantibodies or who are receiving insulin therapy:

-Assessing residual endogenous insulin secretory reserve

-Monitoring pancreatic and islet cell transplant function

-Monitoring immunomodulatory therapy aimed at slowing progression of preclinical, or very early stage type 1 diabetes mellitus

Method Name A short description of the method used to perform the test

Electrochemiluminescence Immunoassay

Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name

C-Peptide, S

Aliases Lists additional common names for a test, as an aid in searching

C Peptide Connecting Peptide of Insulin
C Peptide
Connecting Peptide of Insulin