“…This method has previously been validated against the in vitro IgE CAP system (Pharmacia, Freiburg, Germany) and the skin prick test. 12 Food allergens included hen's egg, cow's milk, peanut, hazelnut, carrot, wheat flour, and soybean; inhalant allergens comprised Dermatophagoides pteronyssinus, Dermatophagoides farinae, cat, horse, dog, Alternaria species, mugwort, plantain, alder, birch pollen, hazel pollen, rye pollen, and a grass pollen mix. In addition, peripheral blood samples of the mothers were taken at birth (in Switzerland and Finland) or at a home visit when the child was 2 months old and were assessed for IgE levels.…”