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St. John Health System
Lab Catalog


Index:

Immunoglobulin IgG4 Quantitative

Order Name IGG4
Test Number: 5580200
Revision Date 10/23/2017
Test Name Methodology LOINC Code
Immunoglobulin IgG4 Quantitative
Turbidometric 2469-5 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1mL 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 2-8 Days 
CPT Code(s) 82787
Internal Comments 10/23/15 changed from Immunodiffusion to turbidometric per Patti Loykasek
10/23/17 stab and su - JK.
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Immunology - Serology