Specimen Requirements

Title

IgG (IMMUNOGLOBULIN G)

Specimen Requirement

1 SST/1.0 mL serum. After 30 minutes of clotting, promptly centrifuge and refrigerate.

Methodology

Stability

Refrigerated 7 days

Reference Range

By Report*

Turnaround

24 Hours

Clinical Use

Evaluate humoral immunity; monitor therapy in IgG myeloma; quantitate IgG; evaluate patients, especially children and those with lymphoma, with propensity to infections. In congenital hypogammaglobulinemia, the IgG is less than 200 mg/dL by 6 months of age. Acquired hypogammaglobulinemia may occur at any age and has IgG concentrations less than 500 mg/dL. IgG concentrations may also be decreased in combined cell-mediated and antibody immunodeficiencies.

Test Code

IGGM