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Test Code
IGASB
Test Name
Immunoglobulin A Subclasses
CPT Codes
82784, 82787 X 2
Included Tests
  • IgA Subclass 1
  • IgA Subclass 2
  • IgA total
Expected Turnaround Time
3 - 6 days
Clinical Utility

Study IgA deficiencies in patients in association with recurrent sinopulmonary infections or repeated transfusions; study IgA elevations associated with IgA myeloma.
Specimen and Container Info

Specimen Type: Serum

Collection Container: Gold Top, Serum Separator

Alternate Collection Container: Red Top, Plain

Desired Specimen Volume: 2 mL
Collection Instructions
  1. Collect a gold top, serum separator tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells.
  2. Transfer 2 mL of serum to a clear aliquot tube (screw cap).
Transport Instructions

Transport to the laboratory refrigerated. 
Stability Requirements

Room Temperature

 14 days

Refrigerated

14 days

Frozen

14 days

Freeze/Thaw Cycles

 Stable x3
Causes for Rejection
  • Gross lipemia
  • Hemolysis
Methodology
Immunologic, quantitative
Reference Intervals

 See patient report.
Alternate Names
  • IgA1,2
  • Immunoglobulin A, Subclasses (1-2)
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Monday-Friday
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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