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Allergy scratch test: Test done on the skin to identify the allergy substance (the allergen) that is the trigger for an allergic reaction.
A small amount of the suspected allergy-provoking substance is placed on the skin. The skin is then gently scratched through the small drop with a special sterile needle.
If the skin reddens and, more importantly, if it swells, then the test is read as positive and allergy to that substance is considered probable.
The procedure varies depending on what type of allergy skin test you are having. The three main types of skin tests are the scratch test, intradermal test, and the ...
Many times people experience allergic reactions, yet are unsure exactly what they are allergic to. An allergy scratch test exposes a person to small amounts of common ...
Allergy tests — Overview covers definition, risks, results of skin tests for allergic sensitivities.
Describes the method and purpose of a prick test or scratch test. A prick test is often used by allergists when a patient has clear allergy symptoms but is ...
What is the test? This test checks for a skin reaction to common allergy-provoking substances, such as foods, molds, dust, plants, or animal proteins.