Abstract
When I proposed the standard values of serum IgE levels in children before, supposed values were used in infants, since serum IgE levels in low range could not be measured at that time. As we were able to determine the IgE value in low range using Pharmacia RIA or LUMIWARD assay system, I tried to evaluate the formerly proposed standard IgE values in infancy.
However, the standard values of serum IgE levels in infancy could not be evaluated from the distribution of IgE levels because of the small number of “low IgE infants”. A part of these infants were then monitord for the changes of IgE levels up to over 1 year of age.
As the results, the formerly proposed standard IgE values were proved to be appropriate even in infancy.
