A great number of advances have been made in the diagnostic tools and testing methods available for foodallergy
diagnosis. Improved and new methodologies have become available not only to identify the presence
of a food allergy, but also to aid in determining the severity of an allergy, the likelihood of its resolution and
potential cross-reactivity with other allergens. Cross-activity may include that between biologically related
and unrelated foods or even between inhalant allergens. These testing methods may also improve patient
outcomes by helping clinicians to provide accurate dietary advice and reduce the need for food challenges.