C-Peptide is used in newly diagnosed Type 1 or Type 2 Diabetes to help determine the level of insulin the patient is producing. The results may also be used to distinguish insulin-secreting tumors from exogenous insulin. C-peptide measurements also can be used in conjunction with insulin and glucose levels to help diagnose the cause of documented hypoglycemia and to monitor its treatment.
8 hours Fasting
Patient should discontinue taking Biotin, Vitamin B7, or Vitamin H 48 hours before getting blood drawn.
1.0 mL Serum in a SST Gold Top Tube
1.0 mL Serum from a Red Top Tube in a Plastic Vial
Specimen should be centrifuged and separated from cells within 2 hours of collection
8 hours Ambient
24 hours Refrigerated
30 hours Frozen (Can Not be re-frozen)
Specimen should be centrifuged within 2 hours of collection
0.3 mL
0.9-5.0 ng/mL
Patients taking vitamin supplements containing doses of >5 mg/day may have falsely decreased test results generated.
C-Peptide is used in newly diagnosed Type 1 or Type 2 Diabetes to help determine the level of insulin the patient is producing. The results may also be used to distinguish insulin-secreting tumors from exogenous insulin. C-peptide measurements also can be used in conjunction with insulin and glucose levels to help diagnose the cause of documented hypoglycemia and to monitor its treatment.
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