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Allergy Testing

Also known as: RAST test, Allergy screen
Formal name: Allergen-specific IgE antibody test
Related tests: Total IgE, Complete blood count (CBC), White blood cell differential count, Eosinophil count, Basophil count
At A Glance
 
Why get tested?
To screen for allergies; sometimes to monitor the effectiveness of immunotherapy (desensitization) treatment

When to get tested?
When you have symptoms such as hives, dermatitis, rhinitis (nasal congestion), red itchy eyes, asthma, or abdominal pain that your doctor suspects may be caused by an allergy

Sample required?
A blood sample drawn from a vein in your arm



This article was last reviewed on September 18, 2006.
This page was last modified on April 8, 2009.
The review date indicates when the article was last reviewed from beginning to end to ensure that it reflects the most current science. A review may not require any modifications to the article, so the two dates may not always agree.
The modified date indicates that one or more changes were made to the page. Such changes may or may not result from a full review of the page, so the two dates may not always agree.
 
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