Food allergy is allergy produced by ingested antigens in food, and usually manifested by a skin reaction. It is also called 
food or dietary allergy. It is not the same as food intolerance as there are no immune system activities and no-life threatening in the terms of intolerance. Usually, the diagnosis of food allergy relies on a properly conducted food trial.
There are tests which commonly used for knowing if allergy exists, such prick test allergy and radioallergosorbent test (RAST). Below, we provide you with frequently asked questions article concerning food and allergy testing. Questions like who should be tested for food allergy, what do the tests measure, what types of tests are available, how to interprete the test and etc has detailed answer within article.
Complete read of Qs & As About Food and Allergy Testing available to download in 65 Kb pdf filetype (source: foodallergy.org)
