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).

Gold serum separator (SST) tube

Immediatley following collection, mix sample by gently inverting 5 times

1. Allow specimen to clot for a minimum of 30 minutes
2. Spin within two (2) hours of sample collection

Gold serum separator (SST) tube

Red serum vial/tube - 5 mL

1. Allow specimen to clot
2. Spin within two (2) hours of sample collection
3. Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), lablled as serum

Transfer vial/tube with cap - 12mL (LabCorp)

Ambient (preferred) - 1 week

Refrigerated - 1 week

Frozen - >2 weeks

• Improper labels (unlabeled or mislabeled)
• Hemolysis (some procedures)
• Delay in transport
• Improper storage temperature affecting results
• Improper container
• Leaking container resulting in compromised specimen
• Quantity not sufficient (QNS)

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.