Allergic reactions, also known as type I allergic reactions, are specific immune responses caused by tissue damage or physiological dysfunction in the body after being stimulated by the same antigen. The White Paper of the World Allergy Organization estimates that the prevalence of allergic diseases worldwide is 10% to 40%^[1]. Common allergic diseases include allergic rhinitis, allergic asthma, atopic dermatitis, urticaria, food allergies, and eczema. In severe cases, allergic shock may occur. The symptoms of allergic reactions induced by different allergens vary, and their clinical symptoms are related to the patient's age, genetic factors, and exposure to allergens. Therefore, quantitative detection of allergen specific IgE is very important ^[2-4].