Walnut Allergy test is conducted on a sample of blood in order to test whether or not you are allergic to walnut. The test is used to detect the amount of IgE Antibodies in the blood which indicates the allergic level. In case you are allergic, you will develop symptoms such as abdominal pain, wheezing, nasal congestion, diarrhea, nausea amongst others whenever you’ll consume walnuts. It might in severe and rare cases cause Anaphylaxis which can be life- threatening. Thus, this test helps to diagnose the severity of the allergy that you might have with walnuts and their consumption. In alternate cases, this test might also be done through the process of skin pricking but it is rare and not very preferred.