Premium Food & Drink Intolerance Test

Discover your food intolerances and transform your health with the most comprehensive food and drink intolerance test in the UK. Trusted by doctors & nutritionists your results will be processed in just 3 days.
£199.00 £249.00
Sale

Break free from food intolerance 

Take control of your health with our Premium at-home food & drink intolerance test that measures your body's immune response to 286 common foods and drinks. Identify potential triggers and start feeling the benefits within days of adjusting your diet. 


Every order receives a virtual consultation with a fully trained Nutritionist and 3 months free access to our online meal planner & health programme app helping you seamlessly integrate better nutrition and new habits into your lifestyle. Plus, our expert team of GPs and Nutritionists are on hand for continued support. 


Our customers have reported improvements in energy, weight management, skin health, and overall well-being following a test.

What’s included?

  • Feature Icon 286 Items tested
    Most comprehensive
  • Feature Icon Accurate IgG 1-4 testing at an ISO-accredited UK laboratory
  • Feature Icon Fast results within 3 working days
  • Feature Icon Finger prick blood sample
  • Feature Icon Easy home testing
  • Feature Icon Free shipping
  • Feature Icon Video consultation with a nutritionist

Meet Molly, one of our fully qualified Nutritional Therapists

See what Dr Gareth, GP has to say about the science behind the test.

Meet Molly, one of our fully qualified Nutritional Therapists

See what Dr Gareth, GP has to say about the science behind the test.

Food intolerance tests made easy

  • Easy to use home-to-lab test
  • Fast results (3 days from sample received at lab)
  • Measures all four subtypes of food-specific IgG 1, 2, 3 & 4
  • Convenient, accessible
  • Backed by science, reviewed by doctors
  • Tested at UKAS certified laboratory
  • Tests up to 286 popular food & drink items
  • Food intolerances can cause:
    Bloating, tummy pain (for children), tiredness, fatigue, food related energy dips, unwanted weight, stomach discomfort.
  • An estimated 14 million people in the UK experience reactions to foods*
  • Easy to use home-to-lab test
  • Fast results (3 days from sample received at lab)
  • Measures all four subtypes of food-specific IgG 1, 2, 3 & 4
  • Convenient, accessible
  • Backed by science, reviewed by doctors
  • Tested at UKAS certified laboratory
  • Tests up to 286 popular food & drink items
  • Food intolerances can cause:
    Bloating, tummy pain (for children), tiredness, fatigue, food related energy dips, unwanted weight, stomach discomfort.
  • An estimated 14 million people in the UK experience reactions to foods*
ISO accredited UK laboratory
IgG Classes 1, 2, 3 & 4 tested, the most advanced test available on the market.
Includes qualified nutritionist video consultation
Free UK delivery
Gold standard macroarray technology
Most advanced test in the UK
ISO accredited UK laboratory
IgG Classes 1, 2, 3 & 4 tested, the most advanced test available on the market.
Includes qualified nutritionist video consultation
Free UK delivery
Gold standard macroarray technology
Most advanced test in the UK

Did you know?

76%
noticed improvement in their symptoms by removing flagged items.
68%
saw those improvements in only three weeks.
92%
saw the symptoms come back when reintroducing the trigger foods.

The NHS doesn't offer IgG food intolerance testing even though an estimated

14 million

people in the UK experience reactions to foods.*

What is an IgG food intolerance test?

An IgG blood test reveals your IgG reactivity levels for different foods. A higher level of IgG reactivity for a given food suggests that it may be causing your symptoms. We use a simple traffic light system to report each item as Low (green), Medium (amber) or High (red) reactivity levels.

However, higher IgG reactivity levels don’t always correlate with symptom-causing foods – which is why it’s so important to use an elimination diet (guided by your IgG test results) to accurately pinpoint your specific food sensitivities.

An IgG blood test uses a small sample of blood to check how your IgG antibodies react to different kinds of food.

A higher IgG reactivity level for a certain food can mean that there’s a possibility that food can be giving you symptoms – making that food an ideal candidate to include in your list of “suspect foods” you initially remove in an elimination diet.

An IgG blood test reveals your IgG reactivity levels for different foods. A higher level of IgG reactivity for a given food suggests that it may be causing your symptoms. We use a simple traffic light system to report each item as Low (green), Medium (amber) or High (red) reactivity levels.

However, higher IgG reactivity levels don’t always correlate with symptom-causing foods – which is why it’s so important to use an elimination diet (guided by your IgG test results) to accurately pinpoint your specific food sensitivities.

An IgG blood test uses a small sample of blood to check how your IgG antibodies react to different kinds of food.

A higher IgG reactivity level for a certain food can mean that there’s a possibility that food can be giving you symptoms – making that food an ideal candidate to include in your list of “suspect foods” you initially remove in an elimination diet.

Understanding the differences between food reactions

The words Allergy, Intolerance and Sensitivity are commonly used interchangeably but there are important differences. Especially with your body reaction.
Food sensitivity
Food allergy
Food intolerance

Food sensitivity

Food sensitivities involve an immune response that differs from food allergies. While the exact mechanisms aren’t fully understood, research suggests that IgG antibody reactions may contribute to symptoms for some individuals. By using IgG testing alongside an elimination diet, people can identify potential trigger foods that may be causing inflammation-related symptoms.

Unlike food allergies, symptoms of food sensitivities often appear hours or even days after consuming a problematic food, making it difficult to pinpoint the exact cause. Reported symptoms from our customers include:

  • Headaches
  • Bloating
  • Stomach pain
  • Indigestion
  • Gastrointestinal discomfort

Food allergy

Food allergies trigger an immediate immune response, involving IgE antibodies. When a person eats a food they’re allergic to, their immune system releases histamine, leading to symptoms such as swelling, itching, difficulty breathing, or even anaphylaxis. This is why many allergy medications are classified as antihistamines - they counteract the effects of histamine.

For example, tree nut allergies (to nuts like hazelnuts, walnuts, or macadamia nuts) can cause severe, life-threatening reactions. Anaphylaxis, a dangerous allergic reaction, can occur within minutes of exposure, leading to a sharp drop in blood pressure or swelling of the airways, making it difficult to breathe.

Food intolerance

Food intolerances occur when the body lacks the necessary enzymes to properly digest a specific food. Unlike food allergies and sensitivities, food intolerances do not involve the immune system - instead, they occur in the digestive system.

A common example is lactose intolerance. Lactose, the sugar in cow’s milk, requires the enzyme lactase to be properly digested. People who are lactose intolerant don’t produce enough lactase, leading to symptoms such as:

  • Nausea
  • Bloating
  • Diarrhea
  • Stomach discomfort

Since food intolerance symptoms occur due to digestive issues rather than immune reactions, they are usually less severe than food allergies but can still cause significant discomfort.

Not an Allergy Test, but Much More

While traditional allergy tests focus on IgE-mediated responses, our IgG test addresses a broader range of food intolerances that impact your gut health, mood, and overall wellbeing.

Gain insights into how your body reacts to everyday foods and create a diet that works for you with support from our Nutritionists.

Unmatched Accuracy with Reproducible Results

Unlike some competitors, our test provides reproducible results, ensuring the accuracy and reliability you deserve.

Our technology is backed by the ELISA gold standard principle, offering full-spectrum testing for a comprehensive view of your food sensitivities

Why IgG Subclasses Matter

The immune system’s response to food involves four IgG subclasses, each playing a unique role.

IgG 1-4 subclasses need to be tested to ensure accurate results. The full spectrum analysis is therefore defined as IgG1-4.

Testing across all four ensures we capture the complete picture of your food intolerances.

Tailored, Cutting-Edge Testing

With up to 286 food antigens from 13 food groups, our test spans everything from staple foods to novel ingredients.

Advanced multiplex-on-demand software allows for customised antigen panels, ensuring we address your unique dietary concerns.

Not an Allergy Test, but Much More

While traditional allergy tests focus on IgE-mediated responses, our IgG test addresses a broader range of food intolerances that impact your gut health, mood, and overall wellbeing.

Gain insights into how your body reacts to everyday foods and create a diet that works for you with support from our Nutritionists.

Unmatched Accuracy with Reproducible Results

Unlike some competitors, our test provides reproducible results, ensuring the accuracy and reliability you deserve.

Our technology is backed by the ELISA gold standard principle, offering full-spectrum testing for a comprehensive view of your food sensitivities

Why IgG Subclasses Matter

The immune system’s response to food involves four IgG subclasses, each playing a unique role.

IgG 1-4 subclasses need to be tested to ensure accurate results. The full spectrum analysis is therefore defined as IgG1-4.

Testing across all four ensures we capture the complete picture of your food intolerances.

Tailored, Cutting-Edge Testing

With up to 286 food antigens from 13 food groups, our test spans everything from staple foods to novel ingredients.

Advanced multiplex-on-demand software allows for customised antigen panels, ensuring we address your unique dietary concerns.

What do I get?

1.

Comprehensive Test Results:

Your results are emailed within 3 days of the lab receiving your sample. No waiting in long lines or doctor appointments.

2.

FREE Nutritionist Call:

Enjoy a complimentary video consultation with one of our nutritionists.

3.

Health and Nutrition Guides:

These resources will help you interpret your test results and plan effective dietary changes.

4.

Food Alternatives Guide:

Explore over 30 chapters of food alternatives that will help you navigate your new diet with ease.

5.

Free Online Meal Planner:

Receive 3 months free access to an online meal planner and curated health programmes tailored to your specific needs.

Combining your test with an elimination diet

What is an Elimination Diet?
The Elimination Process
Reintroducing Foods

An elimination diet is a short-term eating plan designed to help identify foods that may be causing unwanted symptoms.

By temporarily removing specific foods from your diet - especially those known to trigger sensitivities—you allow your body time to reset and reduce inflammation. This creates a clearer environment to observe how different foods impact your health once they are reintroduced.

The Elimination Process

During the elimination phase, you stop eating all "suspect foods" at once.

This phase typically lasts between 4–6 weeks, giving your body enough time to clear potential triggers from your system.

Common foods eliminated include dairy, gluten, soy, eggs, nuts, and certain fruits or vegetables, although this can be tailored to your individual needs based on symptoms or food sensitivity testing.

Sticking to a simple, clean diet during this time is key to achieving reliable results.

After the elimination phase, foods are carefully reintroduced one at a time.

Each new food is added back individually, followed by a 2–3 day observation period to watch for any returning symptoms like digestive discomfort, headaches, skin changes, or fatigue.

If a food causes symptoms, it’s likely a trigger and should be avoided for a longer period. If no symptoms appear, the food can generally be safely reintroduced into your regular diet.

This gradual and systematic approach allows you to confidently identify foods that support your wellbeing - and those that may be holding you back.

FAQ

Our food intolerance test uses a lab technique called ELISA to detect IgG antibodies linked to food sensitivities. It checks your blood for immune responses against up to 286 different food antigens, helping to identify foods your body may not be tolerating well.

After collecting a small blood sample - either through a finger prick or Tasso+ autodraw device - the sample is analysed using a specialised lab instrument. This device measures your IgG antibody levels with precision and provides a detailed report showing which foods may be triggering unwanted symptoms.

During normal digestion, food is broken down into smaller components like amino acids and fatty acids, which are safely absorbed into the bloodstream. However, if the gut lining becomes more permeable than usual — a condition sometimes referred to as "leaky gut" — larger fragments of undigested or partially digested food can enter the bloodstream.

When this happens, the immune system may mistakenly identify these food particles as potential threats and produce IgG antibodies in response. This can lead to inflammation and a range of symptoms linked to food intolerances.

Your blood test results include your reactivity ratings to the items analysed in your chosen test. Our test results are comprehensive but simple to follow and explain in full what everything means to make sure you fully understand it.

Once we’ve received your sample at our laboratory, you’ll receive your test results via email in just 3-5 working days.

You don’t need any medical knowledge or training to read our test results, as everything is laid out to make them quick and easy to understand.

As soon as our lab has received your blood sample we will send you an email to let you know your sample has arrived safely.

If you haven’t received email correspondence from Check My Body Health, please check your email spam or junk folder in case our emails have gone into these folders.

Testing for IgG antibodies to specific foods can help identify potential food intolerances that may be contributing to chronic symptoms such as bloating, fatigue, skin issues, and digestive discomfort. Clinical studies and real-world evidence have shown that making dietary changes based on IgG antibody levels can lead to noticeable improvements in health and wellbeing.

Many individuals have experienced significant relief from symptoms after adjusting their diets to reduce or eliminate foods that trigger an IgG response, making this test a valuable tool in personalised nutrition and long-term health management.

IgG stands for Immunoglobulin G - one of the main types of antibodies produced by your immune system. Antibodies like IgG play a key role in your body’s defence system, helping to identify and neutralise foreign substances such as bacteria, viruses, or even certain food components.

There are several types of immunoglobulins, including IgA, IgE, IgG, and IgM, each with its own function. IgG is particularly important in identifying delayed immune responses, which are often linked to food intolerances rather than immediate allergic reactions.

Yes, it's possible to have elevated IgG levels to certain foods and still feel perfectly fine. In some cases, the immune system is highly effective at clearing IgG-antigen complexes before they trigger any noticeable symptoms. This means that while the body is reacting to a food at the immune level, it may not lead to inflammation or discomfort - at least not immediately or consistently.

That’s why IgG results are best interpreted alongside your personal health history, symptoms, and in consultation with a qualified practitioner.