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C-Peptide, 24-Hour Urine
0081121
Ordering Recommendation

Use to detect insulin secretion. Do not use to diagnose diabetes mellitus.

Mnemonic
CPEP UR
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
 
Collect
24-hour urine. Refrigerate during collection. Also acceptable: Random urine (no reference intervals). 
Specimen Preparation
Transfer 2 mL aliquot from a well-mixed 24-hour urine to an ARUP Standard Transport Tube. (Min: 0.5 mL) 
Storage/Transport Temperature
Frozen. 
Unacceptable Conditions
 
Remarks
 
Stability
Ambient: 2 hours; Refrigerated: 24 hours; Frozen: 1 month 
Reference Interval
14-156 µg/day
Interpretive Data


Components
Component Test Code*Component Chart NameLOINC
0020207Creatinine, Urine - per volume2161-8
0020208Creatinine, Urine - per 24h2162-6
0081122C-Peptide, Urine ng/mL55920-3
0096367C-Peptide, Urine 24 Hour27944-8
0097110Total Volume19153-6
0097111Hours Collected30211-7
* 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
  • 24 hr c-peptide
  • C-Peptide, Urine
  • Connecting peptide insulin
  • Insulin C-peptide
  • Proinsulin C-peptide
  • Urine C- peptide