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HelpEpic Code LAB521 C-Peptide Level
Test Name Alias
C-Peptide Level | Connecting Peptide of Insulin | 8288
Interface Order Alias
10114
Collection Instructions
Specimen Collection: Blood
Container(s): 4.5 mL Mint Green Top (Lithium Heparin Gel) or 5.0 mL Gold Top (Serum Separator-SST Gel)
Preferred Volume to Collect: 4.5 mL
Minimum Volume to Collect: 1.0 mL
Neonate Volume to Collect: 0.5 mL
Capillary collect ok? Yes
Microtainer acceptable: Yes
Collection Instructions:
- Fasting specimen preferred, but not required
- After collection, gently invert tube 8-10 times.
- Specimen should be processed within 2 hours – See Processing Instructions.
Processing Instructions (Laboratory, Outpatient or Off-site collection)
- Processed Specimen: Plasma or Serum
- Minimum Volume Processed: 1.0 mL Plasma or Serum
- Centrifuge/Spin: Yes
- Aliquot: Yes
- Plasma is preferred specimen type
- Green Tube/Plasma: Centrifuge after collection.
- Gold Tube/Serum: Allow blood to clot for 30 minutes in a vertical position and centrifuge within 2 hours.
- Transport Temperature: Refrigerated
Specimen Stability
Ambient: 4 hours
Refrigerate: 24 hours
Frozen: aliquot plasma/serum for longer storage
Laboratory Retention: 72 hours
Test Frequency
Available 24 hours. Usual TAT 1 day.
Reference Range
0.9 - 4.3 ng/mL
Performing Department
Chemistry
Performing Department Laboratory Location
Corewell Health Reference Laboratory, Grand Rapids, MI
Methodology
Method is Roche cobas Electrochemiluminescense Immunoassay.
Patient results determined by assays using different manufacturers for methods may not be comparable.
CPT
84681
CDM Code
3018468101
Epic Test ID
1230100527
LOINC
C-peptide: 1986-9
Mayo Access Code
SHO8288
Reviewed Date
3/7/2024
Updated Date
3/28/2024 - Reference Range correction