skin tests, elimination-type tests and
blood tests may also be done. Skin tests such as ***** test and patch test are the most common. In ***** test, a small amount of suspected allergy-causing substances is placed on the skin, usually the forearm, upper arm, or the back. The skin is then pricked/scratched so the allergen goes under the skin's surface. Results are usually seen within 15-20 minutes wherein swelling and redness are positive.