The prevalence of IgE‐mediated food allergy is increasing and so is the public awareness about food allergy, which together have resulted in a high demand for food allergy testing.1, 2 Following the clinical assessment of patients, which includes the clinical history and a detailed dietary history, diagnosing IgE‐mediated food allergy requires documentation of food‐specific IgE using skin prick testing (SPT) and/or specific IgE testing.3 However, far more common than having food allergy is to have detectable food‐specific IgE. This evidence concerns the gene IGHE and food allergy.