Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  

INSULIN, FREE

ORDERING INFORMATION:
Sunquest Test Code:
FREINS      Geisinger Epic Procedure Code: 83527.02         Geisinger Epic ID: 21471

SPECIMEN COLLECTION
Specimen type:
Serum (preferred) or plasma.
Preferred collection container:
Alternate Collection Container:
3.5 mL gold-top (serum separator) tube
3 mL lavender-top (K2 EDTA) tube
Specimen required:
0.5 mL aliquot serum or plasma; minimum 0.3 mL
Patient preparation:
Overnight fasting is required.

SPECIMEN PROCESSING
Specimen processing instructions:
Centrifuge and transfer specimens to clean, plastic, screw-capped vial(s). Transport frozen. 
Transport temperature:
Refrigerated (preferred) or frozen.
Specimen stability:
Room Temperature: 12 hours (unacceptable). Refrigerated: 7 days. Frozen: 28 days.
Rejection criteria:
Stability limits exceeded. Room temperature specimen.

TEST DETAILS
Reference interval:
1.5-14.9 uIU/mL
CPT code(s):
83527
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:
Free insulin.
Methodology:
Immunoassay
Synonyms:
Free insulin
Insulin (bioactive)
Quest test code 36700
Clinical significance:
The free insulin measurement is helpful in interpreting blood sugar concentration and its relationship to insulin injections in insulin-treated patients with insulin antibodies.

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Monday, Wednesday & Friday morning    
Performed stat? No
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