What tests are given to diagnose allergies?

Skin tests to analyze a response to various substances include: scratch, puncture, prick and intradermal. (False-positive or a false-negative skin tests are possible.) Other tests, including the RAST and other blood tests may be given to diagnose allergies. If you have asthma, you are also likely to have allergies.

If a food allergy is suspected, the patient will go on an elimination diet to exclude milk, soybeans, eggs, wheat, peanuts, nuts, shellfish and corn, foods which cause the most allergies.