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Specimen Collection Manual and Test Catalog

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INSULIN

Geisinger Epic Procedure Code:  LAB2538    Geisinger Epic ID:  19370

SPECIMEN COLLECTION
Specimen type: 

Serum or plasma


Preferred collection container: 
Specimen required: 

2 mL aliquot of serum or plasma; minimum 0.5 mL. Please submit a separate frozen aliquot for this test. It may not be combined with any other test requiring a frozen aliquot.



SPECIMEN PROCESSING
Processing instructions: 

Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection.


Transport temperature: 

Frozen.


Specimen stability: 

Refrigerated: 1 day. Frozen: 6 months.


Rejection criteria: 

Specimens beyond stability limits.



TEST DETAILS
Reference interval: 

3-25 µU/mL (fasting)


Additional information: 

Patient specimens containing a human antimouse antibody may interfere with results. Samples from patients treated with bovine or porcine insulin may contain anti-insulin antibodies which may interfere with results.


CPT code(s):  83525
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: 

Insulin.


Methodology: 
Electrochemiluminescence
Synonyms: 

INS, Immunoreactive insulin


Clinical significance: 

For diagnosis and monitoring of diabetes mellitus and insulin-secreting tumors.


Doctoral Director(s): 
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC
Review Date:  12/27/2024

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