Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

C-PEPTIDE

ORDERING INFORMATION:
Geisinger Epic Procedure Code: LAB1903         Geisinger Epic ID: 21640

SPECIMEN COLLECTION
Specimen type:
Serum
Preferred collection container:
Specimen required:
1 mL aliquot of serum; minimum 0.4 mL.

SPECIMEN PROCESSING
Specimen processing instructions:
Allow to clot. Centrifuge at 1100-2000 g for a minimum of 10 minutes. 
Transport temperature:
Refrigerated or frozen.
Specimen stability:
Room temperature: 4 hours. Refrigerated: 3 days. Frozen: 30 days.
Rejection criteria:
Specimens beyond stability limits.

TEST DETAILS
Reference interval:
0.8 - 4.2 ng/mL (fasting)
CPT code(s):
84681
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
C-Peptide
Methodology:
Electrochemiluminescence Immunoassay
Synonyms:
CPEPG, Connecting peptide
Clinical significance:
A nonreactive breakdown of insulin, it is used in the evaluation of pancreatic beta cell function in diabetes and for determining the source of insulin in patients with hyperinsulinemic hypoglycemia.
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC
Stacy Kenyon, PhD, DABCC
   
Review Date: 12/02/2020

Performing Locations

Geisinger Medical Center

Performing laboratory: Immunology
Technical Lead: Kathy Hurst
Frequency: Three days per week, 1st shift.
Performed stat? No
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