What is allergy testing?
Allergy testing is used to identify allergic triggers that may be worsening allergic conditions including asthma, hay fever, and food allergies. Once allergic triggers are identified, steps can be taken to reduce exposure, and help to reduce the severity of symptoms. Most allergists will use a prick skin test to identify allergic triggers, a procedure in which a small drop of allergenic extract is placed on the forearm or back, and the surface of the skin is pricked through the drop. A small hive will appear at the site of a positive test within twenty minutes.
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If you are allergic, you are reacting to a particular substance. Any substance that can trigger an allergic reaction is called an allergen. To determine which specific substances are triggering your allergies, your allergist/immunologist will safely and effectively test your skin, or sometimes your blood, using tiny amounts of commonly troublesome allergens.
If you have a stuffy nose, trouble breathing (especially in the summer), or hives after eating certain foods, you may have an allergy. Allergy tests can help you and your doctor find out if these problems are caused by an allergy and which things you are allergic to. That way you can stay away from the things that trigger your allergic reaction. What kinds of allergy tests are available? There are skin and blood tests for allergies. Skin tests are used most of the time. There are three main kinds of skin tests. The first kind is called a “scratch” or a “prick” test. A tiny drop of testing fluid is placed on your skin. Then, the skin is pricked through the drop. After 15 minutes, the test site is checked for redness and swelling. There’s a “prick” sensation when the testing is applied, but it doesn’t hurt a lot. Usually, about 40 prick tests are needed for a full exam. In the second kind of skin test, the testing fluid is injected into your skin (like a shot). This test is used to check
