Reactivity test: Get an reactivity test from Health Diagnostics and unlock new information about your body. Test results: The test results are delivered in a PDF where your reactions and deficiencies are presented in a tabular form. Vegan: Or opt for the 450-item vegan test and discover what plant-based products are upsetting your tummy. Hair sample: Send in a sample of your hair and let science do the rest! Options: Choose between testing 500, 900 or 1000 of the most common food and non-food items. Take control: Take control of your body and help yourself however you can using the reactivity test. 500-Item Reactivity Test | UK | Living Social | Living Social