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Test Code LAB521 C-peptide

Performing Laboratory

Barnes-Jewish Hospital Laboratory

Methodology

Cobas ECLIA electrochemiluminescence

 

Methodology Literature References:

Package Insert: C-Peptide. Roche Corporation 10/2022

Specimen Requirements

Specimen Type: Plasma

Container/tube: Mint-green top (lithium heparin)

Specimen Volume: Full tube

Day(s) Test Set Up

Monday, Wednesday, Friday

Cut-off time: 21:00

 

Turn-around time:

STAT: Not available

Routine: available day of testing

Reference Values

1.1 - 4.4 ng/mL

 

Reference Interval Literature References: 

Package Insert: C-peptide. Roche Corporation 10/2022

Additional Information

For BJH Laboratory Use Only.

 

Alternate tube(s):

Red top

Dark green top (Li Heparin)

Purple top (K2 & K3 EDTA)

 

Analyte Stability:

See analyte stability chart.

Laboratory Processing Instructions:

Test performed in BJH Core Lab. Processed by automated line and aliquot stored refrigerated for batch analysis. Completed specimens are stored refrigerated for 5 days.

Test performed in Ambulatory Cancer Building Lab.  Centrifuge sample and deliver to the Cobas.  Completed specimens are stored refrigerated for 5 days.