World leaders of allergy, intolerance and health testing.

Join over 450,000 people who have used one of our tests to eliminate symptoms and improve their health.

Find a happier, healthier you today.
For over 10 years we’ve been helping clients worldwide discover the cause of symptoms
supported by 24/7 customer care and backed by a Trusted Shops guarantee.

Hair Tests from £45.00 Blood Tests from £69.00 Health Tests from £17.95

Allergy, Intolerance & Sensitivity Tests

View All Sensitivity Tests View All Allergy & Intolerance Tests

Order in four easy steps.

Step 1

Order the best test for you securely online

Step 2

Receive a confirmation email and your test

Step 3

Follow the instructions to take your sample

Step 4

Make positive changes with your results

Why Choose Test Your Intolerance?

Test Your Intolerance is part of the Worldwide Health & Wellness company, Healthy Stuff Online Ltd. Our UK laboratories in Derby follow Good Laboratory Practice and our state-of-the-art allergy & intolerance lab is part of a facility certified according to ISO 9001. We have been offering wellness services since 2008 and have continued to invest in the latest equipment and training to ensure we provide our customers with the best possible service.

Find out more about us

Understanding your health

We provide health tests that can be done to suit your lifestyle. No hanging around a doctors surgery or waiting weeks for results, our tests will send the results straight to your email.

You will get a comprehensive explanation of our findings and support you through your wellness journey with our 24hr, 7 day-a-week customer care team, an exclusive follow up programme and range of wellness resources.

Discover The Benefit Of Our Tests

Widest choice of tests

Largest global network

Quality assured facilities

24 hour / 7 day support

Benefit 9,000+ people per month

Established in
2008

Read Our FAQs

Our Best Selling Tests

Our customer promise. Service to you.

As a global leading health brand, we're proud to make our transparent Five-Point Promise to each and every customer as well as offering you our No Quibble Guarantee.

Chat live in any language you prefer, 24 hours, 7 days a week.

Receive your results within 7 days of arriving at our testing centre or 14 days for DNA.

Easy to understand, expert advice is available online.

We promise to resolve any complaints fully within just 7 days.

100% Money-back guarantee on bioresonance tests

Read our full promise

Live Customer Survey Results.

*Statistics from our online customer survey. Last updated 26/11/2020

View the 2019 survey results!

Our Health Tests

View more Health Tests

Don't just take our word for it. Read our reviews!

The results are extremely thorough and we have certainly experienced an improvement in our health as a result of adjusting our diet. The follow up emails were very informative, which helped with our food choices.

- June M via Trustedshops

Such an amazing service. It was quick and the results were really easy to read. It has really helped my daughter with what she can and can't eat.

- Jasmine R via Trustedshops

Extremely useful - pointed out an intolerance to something I ate almost every day that has made all the difference

- Marisa W via Trustedshops

I am definitely feeling better already. Whether this is because I am following a dairy-free diet and, therefore, losing weight, or because I am intolerant to milk and have cut it out is yet to be decided but I am definitely getting less headaches so I am pleased so far.

- Liz M via Trustedshops