Food allergies and sensitivities are more prevalent and are a problem that clinicians are beginning to look into more seriously. Nearly 20% of individuals have food reactions, 4% of those being an immune-mediated response. These food sensitivities can cause symptoms immediately or days after ingestion. There are 4 types of immunologic reactions and multiple ways to test for them. Some of these tests include: a prick test, the intradermal test, a RAST test, or food sensitivity tests executed by a blood draw.
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