Testing for allergen specific IgE
The s-IgE antibodies were tested at the age of 5 years against a mixture
of airborne and food allergens (a multi-allergen test Phadiatop®, Thermo
Fisher Scientific, Uppsala, Sweden) using the ImmunoCAP® enzyme
immunoassay (Thermo Fisher Scientific, Uppsala, Sweden) according to the
manufacturer’s protocol. The test was regarded positive if the food or
inhalant allergen mixture showed a result of 0.35 kU/L or more.
Individual s-IgE results were available for cow’s milk, hen’s egg, fish,
wheat, house dust mite, cat, birch, and timothy grass.