Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

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

IgA SUBCLASSES

ORDERING INFORMATION:
Sunquest Test Code:
IGASUB      Geisinger Epic Procedure Code: IGASUB         Geisinger Epic ID: 45703

SPECIMEN COLLECTION
Specimen type:
Serum
Preferred collection container:
Alternate Collection Container:
6 mL red-top (plain, non-serum separator) tube
Specimen required:
2 mL serum; minimum 1 mL.
Special notes:
Samples must be received into the lab in less than 1 hour.

SPECIMEN PROCESSING
Specimen processing instructions:
Centrifuge within 1 hour of collection and immediately separate serum specimens from the cells into clean, plastic, screw-capped vial(s). 
Transport temperature:
Refrigerated (cold packs)
Specimen stability:
Room temperature: 6 hours. Refrigerated: 14 days. Frozen: 90 days.
Rejection criteria:
Received room temperature. No additive (royal blue-top tube).

TEST DETAILS
CPT code(s):
82784, 82787 x2
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:
IgA1, IgA2, Total IgA
Methodology:
Nephelometry
Synonyms:
Quest test code 3528
Clinical significance:
IgA1 constitutes approximately 80% of the circulating IgA. IgA nephropathy is typically due to IgA1. IgA2 predominates in secretions of some mucosal surfaces. IgA2 concentrations may be useful as an index of mucosal pathology. Subclass deficiency is associated with anaphylactic transfusion reactions.

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Set up: Tuesday, Friday afternoon. Report available: 4 days    
Performed stat? No
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