An allergy skin prick test is one of the most common methods of testing for potential allergic triggers in an out-patient setting. This technique allows multiple allergens to be tested at one time. The doctor will place small amounts of suspected allergens on the forearm or upper back. Using a disposable pricking device, she will prick the skin, allowing the possible allergic trigger to be introduced beneath the surface of the epidermal layer. Results are available for review within 20 minutes. Once the triggers causing your allergic reactions are determined, your allergist can develop an individualized treatment plan.