Types of Allergy Tests
There are several different types of tests for diagnosing allergies. Depending on your symptoms and the suspected allergen, your doctor may recommend one or more of the following tests:
Skin prick test: This is the most commonly used test to identify allergies. A skin prick test involves placing a small amount of a suspected allergen on the skin, then pricking the skin with a needle to allow the allergen to enter. If the area around the prick turns red and itchy, it is likely that you are allergic to that substance.
Blood test: A blood test can be used to measure the amount of immunoglobulin E (IgE) antibodies in the blood. IgE antibodies are produced in response to an allergen, and an elevated level in the blood may indicate an allergy.
Patch test: A patch test is used to diagnose skin allergies. It involves placing a patch containing a suspected allergen on the skin and leaving it for several days. Any reactions, such as redness or itching, may indicate an allergy.
Elimination diet: An elimination diet involves avoiding a suspected allergen for several weeks and then reintroducing it. If symptoms reappear after reintroducing the allergen, it is likely that you are allergic to it.
Getting Tested
If you think you may have an allergy, you should see your doctor. They will be able to advise you on the best type of test for you and refer you to an allergist or immunologist for further testing.