IgG Antibodies

Test Code

IGG

CPT Codes
82784

Preferred Specimen

0.5 Red

Minimum Volume

0.5 mL

Transport Container

Serum (gold or red top) Tube

Transport Temperature

Room Temperature or Refrigeration

Specimen Stability

Room Temperature - 1 day; Refrigerated - 7 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Quantity Not Sufficient, EDTA (purple top tube) contamination, IV contamination

Methodology
Photometric

Setup Schedule

Daily upon receipt

Report Available

Upon completion of analysis

Reference Range

700 - 1600 mg/dL

Clinical Significance

IgG is present in all extracellular fluids and accounts for 70 to 75% of the plasma immunoglobulins in adults. IgG functions to protect tissue spaces by eliminating small soluble proteins such as bacterial toxins and enhancing their clearance through the reticuloendothelial system. IgG levels may be elevated in recurrent or chronic infection, autoimmune diseases, and malignancies. Increased levels may also be observed in systemic lupus erythematosus, rheumatoid arthritis, some parasitic diseases, and infections. The most common form of multiple myeloma is the IgG type. Deficiency of IgG may be genetic (e.g., Wiskott-Aldrich syndrome, severe combined immunodeficiency) or acquired (e.g., AIDS).

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.