Specimen Requirements

Title

IMMUNOGLOBULIN A, QUANTITATIVE (IgA)

Specimen Requirement

Collect SST or plain red top/send 1.0 mL serum.

Methodology

Immunoturbidimetric

Stability

Room temp: 14 days, Refrigerated: 14 days, Frozen: 14 days

Reference Range

By Report*

Turnaround

2 days

Clinical Use

Evaluate humoral immunity; monitor therapy in IgA myeloma. Selective IgA deficiency has an increased association with allergies, recurrent sinopulmonary infection, autoimmune disease, and the HLA A28, B14 or A1, B14 types. IgA deficiency accompanied by a deficiency of subclass IgG2 is associated with recurrent sinopulmonary infections.

Test Code

IGAM