Immunoglobulin G, total and subclass, in children with or without recurrent otitis media.

Total IgG and subclasses IgG1, IgG2, IgG3, and IgG4 were measured in 89 subjects with recurrent otitis media. There was no significant difference between the groups with respect to the arithmetic or geometric mean levels for total IgG or subclasses IgG1, IgG2, IgG3, or IgG4.