Allergy testing shows which allergens in the environment trigger your allergies, so you can avoid those allergens and further treatment can be planned.
The test involves placing a small amount of the suspected allergy-causing substance (allergen) on the skin and then scratching or pricking the skin so that the allergen is introduced under the skin surface. The pricking does not cause any wound. After 15 minutes, if you are allergic to any allergens, signs of a reaction, which usually include swelling and redness of the site similar to a mosquito bite, will occur.
The test involves collecting a blood sample and costs more and takes longer time than the skin test. The procedure is performed when the patient cannot take the skin test.