Allergy testing identifies allergens, like mold, pet dander, bee stings and peanuts, that can cause allergies. During a skin prick test, a healthcare provider introduces allergens into your skin to check for a wheal (raised mark), rash or other reactions. Blood tests can check for IgE antibodies. The results can help you take steps to manage allergies. Healthcare providers perform allergy tests to determine whether your immune system overreacts to certain substances (allergens). If you have an allergic reaction, it means you have an allergy. People can be allergic to things in the environment like mold, pollen and pet dander. Some people have allergic reactions to bee stings or latex. People with food allergies may not be able to tolerate peanuts, milk or soy. Your healthcare provider may perform an allergy test if you have allergy symptoms that bother you. Providers also perform allergy tests on people who have asthma. The test can identify allergy triggers that can worsen asthma symptoms or bring on an asthma attack. You may also need a test if you’ve had a severe allergic reaction called anaphylaxis. This potentially life-threatening problem can cause hives or swelling, breathing difficulty and/or a sharp drop in blood pressure that brings on anaphylactic shock. Your health history along with allergy testing is used to determine the cause of the severe reaction. If you have had an anaphylactic reaction or may be at risk for one, then you may need to carry an epinephrine (adrenaline) auto-injector (EpiPen®) to treat the symptoms.
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