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Unit Code 90028:
IgA Subclasses, NEPH

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Reference Values

Reference Ranges (mg/dL):

 

Age (years)    IgA1                IgA2                Total IgA

0 - 2                        18-63                      3-19                       25-75

3-6                          25-126                    2-31                       31-153

7-12                       49-183                    3-43                        56-232

> 12                        54-296                  10-96                       79-399           

    

Serum IgA is comprised of 80-90% IgA1 and 10-20% IgA2.

Deficiencies in either subclass have been associated with

anaphylactic transfusion reactions. Decreased IgA1 levels

have been reported in patients with Haemophilus influenzae

infection, whereas decreased IgA2 levels have been reported

in patients with sinopulmonary infections.

    

Test Performed by

Focus Diagnostics, Inc.

5785 Corporate Avenue

Cypress, CA   90630-4750

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