C-Peptide

Preferred Specimen(s) 1.0 mL Serum

Instruction Overnight fasting is required

Transport Container Plastic screw cap vial

Transport Temperature Frozen

Reject Criteria

Grossly hemolysed,
Cord blood

Methodology Chemiluminescent Enzyme Immunoassay

Clinical Significance C-Peptide is useful in distinguishing insulin-secreting tumors, i.e., insulinomas, from exogenous insulin administration. C-Peptide concentrations are severely depressed or absent in Type I diabetes mellitus. C Peptide is also useful in monitoring patients who have received islet cell or pancreatic transplants.