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IgG
Test CodeIGG
Alias/See Also
Immunoglobulin G
IgG, Quantitative
Quest Code
543
IgG, Quantitative
Quest Code
543
CPT Codes
82784
Preferred Specimen
1 mL serum collected in a serum separator tube (SST)
Minimum Volume
0.5 mL
Other Acceptable Specimens
1 mL serum collected in a no additive (red-top) tube, transferred to a plastic screw-cap vial
Patient Preparation
Overnight fasting is preferred.
Patient Preparation
Overnight fasting is preferred.
Instructions
Serum should be separated from the red cells within 1 hour.
Transport Temperature
Refrigerated
Specimen Stability
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 3 months
Refrigerated: 7 days
Frozen: 3 months
Methodology
Immunoturbidimetric
Setup Schedule
Monday-Friday Morning, Evening, Night
Report Available
Next day
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.
Performing Laboratory
Quest Diagnostics Nichols Institute
Chantilly, VA
Performing Laboratory
Quest Diagnostics Nichols Institute
Chantilly, VA
