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C-Peptide, Other
3000529
Ordering Recommendation

Aid in the detection of insulinoma. May aid in distinguishing type 1 from type 2 diabetes mellitus (DM) in ambiguous cases. Do not use to diagnose DM.

Mnemonic
CPEPOTHER
Methodology
Quantitative Chemiluminescent Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
Fasting specimen preferred. 
Collect
Serum Separator Tube (SST) or Plasma Separator Tube (PST). Also acceptable: Green (Sodium or Lithium Heparin), Lavender (EDTA), or Pink (K2EDTA). 
Specimen Preparation
Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transport 1 mL serum or plasma in an ARUP Standard Transport Tube. (Min: 0.5 mL) 
Storage/Transport Temperature
Frozen. 
Unacceptable Conditions
Grossly hemolyzed specimens. 
Remarks
 
Stability
After separation from cells: Ambient: 8 hours; Refrigerated: 48 hours; Frozen: 1 month 
Reference Interval
Not established.
Interpretive Data
The reference interval for fasting c-peptide is 0.8-3.5 ng/mL. To convert to nmol/L, multiply ng/mL by 0.33.

Note
Hotline History
View Hotline History
Components
Component Test Code*Component Chart NameLOINC
3000530C Peptide, Other1986-9
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • C Peptide
  • C Peptide Connecting Peptide of Insulin
  • C-Peptide, Serum
  • Connecting Peptide of Insulin