[IgD level in healthy children of various age].

IgD level examination was performed in 139 healthy children in various age groups (from birth till 14 years). There was no IgD in umbilical cord blood neither in infant serum. In children over 1 year of age, average IgD level was 35 IU/m1 and no significant differences were found in higher age groups. Nevertheless the percentage of detectability was growing with age of children.