Identify the foods causing your symptoms with our comprehensive home test kit. 1,600+ foods tested. Results in 7 days.
⭐️⭐️⭐️⭐️⭐️ nearly 7,000 five-star reviews across our brands
Part of the Test My Food Sensitivity family
Test Your Intolerance has been helping customers across the UK and beyond understand their bodies since 2008, providing accessible, affordable at-home hair tests that identify the food and environmental triggers behind symptoms like bloating, fatigue, skin issues, and brain fog.
In 2025, we brought Test Your Intolerance together with Sensitivity Check, Test My Allergy, and Allergy Test under the Test My Food Sensitivity family. The reason is simple — our customers deserve one trusted home for all their testing needs, with a single account, a wider range of tests, and one expert customer service team supporting them throughout their health journey.
If you are a returning Test Your Intolerance customer, you are in exactly the right place. The same trusted testing process, the same commitment to your results, and the same team — now with even more tests and the backing of over 1 million customers helped worldwide.
Explore our testing options
Our tests use non-invasive sensitivity (Bioresonance) testing, using a small hair sample to test for 1600 triggers.
Your personalised report will be sent to your email inbox 5-7 days of our facilities receiving your sample.
Rather than needing to spend up to £200+ for a traditional blood test, our sensitivity tests are significantly cheaper.
After receiving your results you’ll know what triggers to avoid, and you'll be able to start changing your diet and lifestyle.
Food sensitivities can be the cause of a variety of health issues including headaches, irritable bowel syndrome and fatigue and even a variety of undiscovered symptoms. Our comprehensive sensitivity tests can quickly help you understand more about possible trigger items.
We have helped people with:
And many more symptoms.
Over 7,000 people have given us 5-star reviews. See what some of them have to say.
What makes us different from other sensitivity test providers
Our team has been at the forefront of at-home hair-based sensitivity testing since 2008, starting with Test Your Intolerance and Sensitivity Check in the UK, and expanding globally under brands like Allergy Test.
We believe in honesty and transparency, that's why we offer a 100% money-back guarantee. If your results don't change your health, we'll give you your money back.
We've served customers in over 50 countries worldwide through our family of brands, delivering sensitivity tests to diverse markets.
With over 500,000 tests processed in the last 5 years and an estimated 1+ million over 17 years across our brands, our experience speaks for itself.
Test Your Intolerance was born in 2008 in Ashby de la Zouch, UK, with a simple aim: offer quality intolerance tests at affordable prices.
Our growth has been phenomenal. As demand grew across the globe, we became the first company in our industry to offer a 100% money-back guarantee.
Over the years we've launched specialist brands including Allergy Test and the million+ selling Sensitivity Check to serve different markets.
In 2025, we brought everything under one banner - but we're still the same great business providing quality, trusted tests at affordable prices, backed by our 100% money-back guarantee.
Part of the Test My Food Sensitivity family
If you have any questions about your test, or simply not sure what test to choose, our team is happy to help. You can get in touch with them here.
Once we have received your hair samples, you will be notified by email. Our technicians will process your sample and within 5-7 working days, you will receive an email with your results.
We're happy to answer any questions you might have about our tests and testing process. You can speak with our customer service here.
Join thousands of satisfied customers who've given us nearly 7,000 five-star reviews across our brands.
