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IgG
Test Code543
CPT Codes
82784
Preferred Specimen
2 mL serum
Minimum Volume
0.5 mL
Instructions
Serum should be separated immediately from clot
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 90 days
Refrigerated: 7 days
Frozen: 90 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic
Methodology
Immunoturbidimetric
Setup Schedule
A.M. Sets up 6 days a week.
Clinical Significance
Increased IgG is associated with acute and chronic inflammations, monoclonal IgG myeloma, autoimmune diseases; decreased IgG is found in selective IgG deficiency, Bruton's Disease, and acquired immune deficiency.
