Collection Notes: Avoid grossly hemolyzed or grossly lipemic specimens.
Clinical Utility: Decreased IgA levels are found in selective IgA deficiency and in ataxia telangiectasia. Elevated IgA is associated with monoclonal IgA myeloma, gastrointestinal and respiratory infections, and malabsorption.
Serum (1 mL)
Ambient 3 Days
Refrigerated 7 Days
Frozen 6 Months
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