Allergy testing

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Definition

Allergy tests are any of several tests used to determine the substances to which a person is allergic.

Alternative Names

Patch tests - allergy; Scratch tests - allergy; Skin tests - allergy; RAST test

Why the Allergy testing is Performed

Allergy tests are used to determine the specific substances that cause an allergic reaction in an individual.

They may also be used to determine if a group of symptoms is a true allergic reaction, which involves antibodies and histamine release. Some food intolerances, in which there is an inability to digest a food because of lack of appropriate enzymes, produce symptoms similar to allergies. Some drugs, such as aspirin, can cause allergy-like symptoms without the formation of antibodies or the release of histamine.

Additional conditions under which the test may be performed:

• Allergic rhinitis
• Angioedema
• Contact dermatitis
• Nasal obstruction

Read more - What Allergy testing results mean, normal result of Allergy testing.