Food Intolerance Testing

Intolerance & Allergy Testing

Why Have An Intolerance Test?

When addressing health and diet, food intolerance testing is a useful place to start as it can provide important information when assessing the health of the digestive tract and immune system. It also highlights food that should be temporarily excluded or minimised.

Food intolerance tests can help you to understand why you may experience digestive problems such as bloating, constipation and diarrhoea, cramping, flatulence and more. Food intolerance can be a contributing factor in conditions like IBS and inflammatory bowel disease and can also be the cause of seemingly unexplained symptoms. These might include fatigue, acne, and eczema, hives, acid reflux/ heartburn and indigestion, stuffy nose, catarrh, excessive ear wax and more.

Interpret With Care

Food intolerance test results need to be interpreted with care. In most cases you should not avoid the problematic foods forever. As part of your consultation, we’ll show you how you can enjoy these foods in the future.

Food intolerance is usually a sign that there is an imbalance within your gut. Food intolerance doesn’t just suddenly appear; it is caused by something. During our consultation we’ll assess what this may be and discuss an action plan to correct suspected imbalances. Our goal is to help you avoid developing further intolerance and to heal any intolerance you may already have so that you can enjoy a varied diet.

Our Tests


We provide comprehensive support. Unless stated otherwise, all our tests come with a personalised action plan to help you PROPERLY understand he results and how to address the underlying cause of food intolerance.

We always offer this because whether you have an intolerance, allergy or neither, the presence of symptoms indicate there is an imbalance.


Testing Methods

All of our allergy and intolerance tests are blood tests. Blood testing is the only validated way of testing for immune mediated food intolerance. There are companies who offer hair tests; unfortunately it is not possible to measure food intolerance via hair.

Allergy testing can be done via skin prick testing, however this is only available via a doctor. We provide our allergy test via finger prick blood testing.

We are able to work with you wherever you are in the UK.


Unsure about what test to go for or not sure if testing is right for you? If you’d like a friendly chat with Louise about our services, click the button below and select ‘Enquiry Phone Call’. Then choose a time that suits you!

Alternatively, click here to send us an email.

Tests We Offer

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What Are The Limitations of IgG Testing?

  • Food intolerance tests measure your IgG immune reaction to foods because an IgG reaction is most commonly associated with food intolerance. It is not uncommon to have other types of immune reactions, for example IgE, IgM, and IgA. This intolerance test will not detect these types of immune reactions and therefore, may not detect every food intolerance you may have. It is possible to test these other types of immune responses, however it is costly. If you would like information on this more advanced testing please don’t hesitate to ask.
  • This test will not test for enzyme deficiency intolerance, such as lactose intolerance, as a different type of test is required for this.
  • This test will not test for food intolerance caused by gut bacterial imbalances (e.g. SIBO).
  • As this test is measuring the amount of antibodies in your blood to foods, it will not detect intolerance to foods that you have been avoiding for 3 months or more.

With these limitations in mind, this test is useful as a starting place. We insist on having the consultation alongside the intolerance test so that we can assess for these other types of intolerance, as well as other factors that may be contributing to your symptoms.

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Technical Information

People can develop irritating and even life threatening TH2-driven IgE antibody responses to even the most minute exposure to the wrong dietary antigens. It is, however, important to note that only some of the people who are exposed to these substances make IgE antibodies against them. The first exposure may make people sensitive to the allergen without causing any symptoms. When these sensitized people subsequently encounter the allergen, IgE- expressing basophils and mast cells release substances (such as histamine, prostaglandins, and leukotrienes) that cause swelling or inflammation in the surrounding tissues. Such substances begin a cascade of reactions that continue to irritate and harm tissues. These reactions range from mild to severe.

Meet Louise

Louise helps men and women who want to feel energised, lose weight and reduce pain to free themselves from their symptoms. Louise specialises in digestive health and weight loss and has helped hundreds of people to live a healthier, happier life.

Louise Digby is a BANT registered nutritional therapist, has a degree in nutritional therapy and has been in practice since 2012.

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