1992 Volume 15 Issue 5 Pages 459-466
A correlation between serum levels of IgE and IgG, was examined in 79 patients with bronchial asthma. High levels of IgG4 were not always correlated to high levels of IgE in all subjects with asthma. IgG4 levels tended to increase as IgE levels increased in patients over age 60, but not in those under age 59. The results show that serum IgG4 levels are associated with serum IgE levels in patients over age 60 and are related to patient age in all subjects with asthma.