For the evaluation of patients with recurrent infection for the possibility of IgA deficiency (IgAD).
Patients with IgA deficiency may develop antibodies against IgA that make them susceptible to adverse (anaphylactic) reactions to blood products including intravenous immunoglobulin (IVIg).
Immediatley following collection, mix sample by gently inverting 5 times
Gold serum separator (SST) tube
Ambient (preferred) - 1 week
Refrigerated - 1 week
Frozen - >2 weeks
Enzyme Linked Immunosorbent Assay (ELISA)
<99 U/mL (Normal, healthy individuals who do not have anti-IgA antibodies).
The reportable range is 16-1000 U/mL.