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Labcorp Oklahoma, Inc.
Test Directory


Index:

Immunoglobulin IgG Subclasses

Order Name IGG SUBCL
Test Number: 5580250
Revision Date 10/23/2017
Test Name Methodology LOINC Code
Immunoglobulin IgG Quantitative
Turbidometric 2465-3 
Immunoglobulin IgG1
Turbidometric 2466-1 
Immunoglobulin IgG2
Turbidometric 2467-9 
Immunoglobulin IgG3
Turbidometric 2468-7 
Immunoglobulin IgG4 Quantitative
Turbidometric 2469-5 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL Serum Clot Activator SST Refrigerated
Instructions Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection.
Stability After separation from cells: Ambient 4hours, Refrigerated 7 days, Frozen 1 months (avoid repeated freeze/thaw cycles).
GENERAL INFORMATION
Testing Schedule Mon-Sat 
Expected TAT 2-4 Days  
Clinical Use Useful for the detection of IgG subclass deficiencies. 
CPT Code(s) 82787X4, 82784
Lab Section Immunology - Serology