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Labcorp Oklahoma, Inc.
Test Directory


Index:

C-Peptide

Order Name CPR
Revision Date 12/03/2019
Test Name Methodology LOINC Code
C-Peptide
 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 0.5mL (0.4 mL) Serum Red Top Frozen
Instructions

Patient Preparation:
1. Patient should fast for 8 hours.

2. For 12 hours before this test do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.

Label specimen with Mobilab label or with patient name (first and last), date of birth, date and time of collection, collector initials, and test(s) being ordered.
Reference Range 1.1-4.4 ng/mL

Reference intervals have not been formally verified in-house for pediatric patients. The published literature indicates that reference intervals for adult and pediatric patients are comparable.

Methodology Electrochemiluminescence Immunoassay (ECLIA)
GENERAL INFORMATION
Testing Schedule Monday through Friday 5 a.m.-12 a.m.; Saturday 6 a.m.-6 p.m. 
Expected TAT 2-3 Days  
Notes Specimen Stability:
Frozen (preferred)- 30 Days
Refrigerated - 7 Days
CPT Code(s) 84681
Lab Section NRLS-Mayo Medical Laboratories