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The detection of peanut IgE antibodies helps to assess if certain proteins found in peanuts could be the cause of allergic symptoms. It is a highly common allergen in both children and adults.
Peanut is a common food allergen in both children and adults. In most cases, this allergy is lifelong and can occur for the first time at any age.
Symptoms depend on whether it is a cross-reaction with birch pollen or an actual peanut allergy. In the first case, the symptoms are mild and are limited to itchy mouth and lips. Actual peanut allergy symptoms can be quick and severe, resulting in an acute systemic reaction (anaphylactic shock).
Peanuts include many allergenic proteins, and the severity of symptoms depends on which protein a person is allergic to. The most severe symptoms are associated with peanut protein Ara h2. If anti-peanut IgE is detected in your blood, we recommend that you also determine the presence of antibodies to this protein.
Peanuts are not related to tree nuts (walnuts, cashew nuts, hazelnuts, and Brazil nuts). Therefore, people who are allergic to peanuts are not necessarily allergic to tree nuts. However, sometimes these allergies co-occur.
An increased amount of IgE antibodies in the blood may be caused by an allergic cross-reaction to birch pollen, as well as actual peanut allergy. To confirm a final diagnosis, it is useful to determine IgE antibodies to different peanut proteins, and take an elimination or provocation test at an allergist.
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