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Test Code 62871868 C-Peptide Blood

Performing Laboratory

Torrance Memorial Laboratories

Specimen Requirements

Submit only 1 of the following specimens:

 

Hospital Preferred Specimen Type: Plasma

Container/Tube: Lithium heparin gel

 

Outreach Preferred Specimen Type: Serum

Container/Tube: Serum gel

 

Spin Instructions:

Serum gel:  Allow to sit for 30 minutes prior to spinning.  Spin within 2 hours of collection.

Heparin plasma: Spin within 45 minutes of collection. 

 

Also acceptable:  Red top tube
Specimen Volume 0.6 mL serum
Reject due to gross hemolysis or lipemia.

 

Specimen Transport Temperature

Ambient

 

Storage Temp Stability:
Room Temperature: 8 hours
Refrigerated Temperature: 48 hours

Methodology

Immunoassay

Reference Range

New reference range effective 6/22/2021

0.78 - 5.19 ng/mL

 

Limitations:  Heterophilic antibodies in human serum can react with reagent immunoglobulins, interfering with in vitro immunoassays.  Patients routinely exposed to animals or animal serum products can be prone to this interference and anomolous values may be observed.

Day(s) Test Set up/TAT

Performed:

Daily

 

TAT:

Routine: < 4 hrs

Aliases

None

CPT Code

84681