What Is a Sensitivity Test? A Plain-English Guide Before You Order

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Bloated after lunch, foggy by mid-afternoon, and no idea why? You are not alone. Many people start looking into a sensitivity test when they have ruled out the obvious causes but still feel like something in their diet or surroundings is not agreeing with them.

Before you order anything, it helps to know what a sensitivity test actually looks at, what it can tell you and what it cannot. This guide covers all three.

Sensitivity, Intolerance, Allergy: Untangling the Words

These terms get used interchangeably, which does not help. Here is a simple way to think about them:

  • Allergy: an immune reaction involving IgE antibodies. Symptoms are usually quick and can be serious.
  • Intolerance: difficulty digesting or processing a food, such as lactose. Symptoms are slower and mainly digestive.
  • Sensitivity: a broader term people use for delayed, often vague reactions to foods, additives or environmental items that do not fit neatly into either box.

A sensitivity test is designed to explore that broader group, looking at how your body may respond to a wide range of items rather than just one or two suspects.

What Can a Sensitivity Test Check?

Most home sensitivity tests go well beyond food. Depending on the kit, they can cover:

  • Foods and drinks, including dairy, gluten, eggs, meat, fish, fruit, vegetables, herbs and spices
  • E-numbers, the additives and preservatives found in processed foods
  • Environmental items, such as pollens, grasses, fabrics and animal dander
  • Metals found in jewellery, household items and water
  • Wellbeing checks, such as vitamin and mineral balance and gut health indicators

The wider the test, the more likely you are to spot a pattern you had not considered, such as a reaction to an additive rather than the food itself.

Why People Take a Sensitivity Test

People usually come to testing after months, sometimes years, of symptoms that come and go. The most common ones are:

  • Bloating, wind or tummy pain after eating
  • Diarrhoea, constipation or both
  • Ongoing tiredness, even after a full night’s sleep
  • Headaches that seem to follow meals
  • Brain fog or trouble concentrating
  • Itchy skin, rashes or acne flare-ups

Because these symptoms are delayed, it can be very hard to link them to a single food through trial and error alone.

How a Home Sensitivity Test Works

With our tests, the process is simple and done entirely from home:

  1. Choose and order your test online
  2. Receive your kit by Royal Mail
  3. Take a small hair sample using the instructions provided
  4. Post it back using the free return envelope
  5. Receive your results report by email

Our hair-based tests use bioresonance, which falls under complementary and alternative medicine. It is not recognised by conventional medicine and does not diagnose medical conditions. Many customers use it as a broad first screen to help decide which foods or items to explore further.

What your results look like

Your report groups items by reactivity level, so you can see at a glance which foods or substances show the strongest response. That gives you a shortlist to work from, rather than cutting out everything at once.

What a Sensitivity Test Cannot Do

It is just as important to know the limits. A home sensitivity test does not diagnose allergies, coeliac disease, IBS or any other medical condition.

If you think you might have coeliac disease, speak to your GP before changing your diet. The NHS blood test for coeliac disease only works if you are still eating gluten, so cutting it out first can give a false negative. And if you ever have swelling, breathing difficulty or a rapid reaction after eating, seek medical help straight away.

Choosing the Right Sensitivity Test

We offer several levels of testing, so you can pick one that matches how much detail you want:

  • Core Test: a low-cost entry point if you want a first look
  • Essential Intolerance Test: 750 items across foods, E-numbers, environmental items and metals
  • Complete Intolerance Test: our most in-depth sensitivity test, covering 1360 items plus gut health, vitamin and hormone checks
  • Complete Plus: everything in the Complete test, plus a blood spot check for 40 common IgE allergies

If you are unsure, start by thinking about your symptoms. Mostly digestive? A food-focused test may be enough. Symptoms that flare with the seasons or around pets? A test that includes environmental items makes more sense.

Turning Results Into Real Changes

Once your results arrive, pick the one or two items with the highest reactivity and remove them for two to four weeks. Keep a diary of how you feel, then reintroduce each item one at a time. This step-by-step approach tells you far more than your results alone. If you plan bigger changes to your diet, a dietitian or nutritional therapist can help you keep things balanced.

Ready to Find Out More?

A sensitivity test will not give you every answer, but it can turn a long list of maybes into a short list of things worth trying. If that sounds useful, take a look at our home test kits and choose the one that suits you. Every kit includes free postage and is backed by our money-back guarantee.

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Disclaimer: Bioresonance is categorised under Complementary and Alternative Medicines (CAMs) which covers a wide range of therapies that fall outside mainstream medicine. As a CAM, Bioresonance therapy is recognised as a proven therapy method by practitioners and peers Worldwide. Conventional medicine does not currently recognise Bioresonance as it has not been subject to scientific research. Our test and this website does not make a medical diagnosis nor is it intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your doctor or other qualified health provider if you have a medical condition or with any questions you may have regarding a medical condition and/or medical symptoms. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. All probable or possible diagnoses generated by the test or this website need to be discussed and confirmed with a qualified medical practitioner. If you think you may have a medical emergency, call your doctor or the emergency services immediately. Reliance on any information provided by this Website is solely at your own risk. Some of the content on this Website may be provided by third parties and we are not in a position to verify this content. We do not warrant that any such third party content is true, accurate or complete. Our test does not measure type IgE allergies or IgG antibodies. Since these reactions can be serious, you should seek the help of an allergy specialist.