Abstract
Answer B. Oral food challenge
An oral food challenge is the gold standard test for confirming food allergies. They can be performed when a diagnosis remains uncertain from the history, allergy testing and diagnostic elimination of food items. It should be undertaken in an adequately resourced clinic or hospital setting, under close observation by appropriately trained staff with facilities for emergency treatment of anaphylaxis and resuscitation.
InnovAiT article: Food allergies and atopic dermatitis. DOI: 10.1177/1755738020949897.