Please beware of unorthodox diagnosis techniques. Currently there are a number of allergy and intolerance tests that have been shown to be unreliable and have no scientific rationale. Given these tests may provide misleading results, they often lead to ineffective and potentially unnecessary treatment. The Australasian Society of Clinical Immunology and Allergy (ASCIA) advise against the use of the following tests: Vega testing, hair analysis, stool-based tests, and iridology. For more information and a comprehensive list of unorthodox tests please visit the ASCIA website. If you have had one of these tests performed to diagnose an allergy, please seek the advice of your GP.