Transfusion
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To meet the transfusion requirements of IgA-deficient patients with anti-IgA, blood services screen random donors to identify potential donors of IgA-deficient blood components. New information reveals that some IgA-deficient persons may also be deficient in IgG2 and may be at increased risk for bacterial infections. ⋯ Some blood donors, recruited specifically because they are IgA deficient, may also be deficient in IgG2. Persons identified by donor screening programs as being IgA deficient should be tested for IgG2. If deficient in IgG2, they should be evaluated for a history of recurrent bacterial infections and counseled accordingly.