IgG Subclasses

• CPT Code: 82787x4, 82784
• LOINC:
• Specimen Type: Red or SST
• Frequency: Setup: Mon-Sat; analytic time 1 day
• Instructions: 1.0mL serum from red or SST tube. Refrigerate. Min 0.5ml
• Text: Useful for A second-order test for evaluating patients with clinical signs and symptoms of humoral immunodeficiency or combined immuno-deficiency. Testing may be indicated in hypogamma-globulinemic patients, and in patients with clinical evidence of a possible immunodeficiency with a normal level of total IgG protein in serum. Components: Z0298 Total IgG; Z0300 IgG 1; Z0302 IgG 2; Z0304 IgG 3; Z0306 IgG 4.
• Methodology: Nephelometry CPT: 82787x4, 82784