Food Sensitivity Test
Food Sensitivity Test
Food Sensitivity Test
Food Sensitivity Test
Food Sensitivity Test
Food Sensitivity Test
Food Sensitivity Test
Food Sensitivity Test
Food Sensitivity Test

Food Sensitivity Test

Struggling with bloating, low energy after eating, unexpected weight changes, or stomach discomfort? These could be signs of a food intolerance or sensitivity. Discover your food intolerances and transform your health with the most comprehensive food and drink intolerance test in the U.S. Trusted by doctors & nutritionists your results will be processed in just 3 business days at a CLIA-certified laboratory.
$229.00 $249.00
Sale

Break Free from Food Sensitivities

Take control of your health with our at-home food and drink sensitivity test. Using advanced IgG antibody testing, we measure your body’s immune response to 286 popular foods and drinks across 13 major groups. Identify potential triggers and start feeling the benefits within days of making the right dietary changes.

Every test includes a one-on-one virtual consultation with a qualified nutritionist plus 1 month of free access to our meal planning and health app — designed to make healthy eating simple, personalized, and sustainable. You’ll also get ongoing support from our team of doctors and nutritionists to guide you every step of the way.

Our customers often notice improvements in:

- Energy levels
- Weight management
- Skin health
- Overall well-being

What’s included?

  • Feature Icon 286 Items tested
    Most comprehensive
  • Feature Icon Tested at CLIA-certified laboratory
  • Feature Icon Fast results within 3 business days
  • Feature Icon Finger prick blood sample
  • Feature Icon Easy home testing
  • Feature Icon Pre-paid shipping included
  • Feature Icon Virtual consultation with a nutritional therapist

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
  • Backed by science, reviewed by doctors
  • Tested at CLIA-certified laboratory
  • HSA/FSA approved
  • 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
  • Backed by science, reviewed by doctors
  • Tested at CLIA-certified laboratory
  • HSA/FSA approved
  • 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*
CLIA-certified US laboratory
IgG Classes 1, 2, 3 & 4 tested, the most advanced test available on the market.
Includes virtual consultation with nutritionist
Shipping included
Gold standard microarray technology
CLIA-certified US laboratory
IgG Classes 1, 2, 3 & 4 tested, the most advanced test available on the market.
Includes virtual consultation with nutritionist
Shipping included
Gold standard microarray technology

Did you know?

76%
noticed improvement in their symptoms by removing flagged items.
68% felt better
saw those improvements in only three weeks.
92% impacted
When reintroducing trigger foods, 92% of users saw their symptoms return — confirming the impact of their sensitivities.

Food Intolerance Is Common - But Often Overlooked

1 in 4 U.S. adults

report food intolerances - yet such reactions are often mistaken for allergies or dismissed as ‘just digestive issues’.*

*National Library of Medicine https://pubmed.ncbi.nlm.nih.gov/32924902/(pubmed, 2020)

What is an IgG food intolerance test?

An IgG blood test measures how your immune system reacts to different foods by detecting IgG antibody levels.

Higher IgG reactivity to a specific food may indicate that it’s contributing to your symptoms.

We use an easy-to-understand traffic light system to show your reactivity levels:

Green = Low
Amber = Moderate
Red = High

It’s important to note that high IgG levels don’t always mean a food is causing your symptoms. That’s why we recommend following an elimination diet based on your test results — it’s the most effective way to identify which foods are truly affecting your health.

An IgG blood test uses a small blood sample to measure how your immune system reacts to different foods.

When IgG antibody levels are elevated for a certain food, it may be contributing to your symptoms. These foods become strong candidates for your initial elimination diet — helping you identify and remove potential triggers as part of your journey toward feeling better.

An IgG blood test measures how your immune system reacts to different foods by detecting IgG antibody levels.

Higher IgG reactivity to a specific food may indicate that it’s contributing to your symptoms.

We use an easy-to-understand traffic light system to show your reactivity levels:

Green = Low
Amber = Moderate
Red = High

It’s important to note that high IgG levels don’t always mean a food is causing your symptoms. That’s why we recommend following an elimination diet based on your test results — it’s the most effective way to identify which foods are truly affecting your health.

An IgG blood test uses a small blood sample to measure how your immune system reacts to different foods.

When IgG antibody levels are elevated for a certain food, it may be contributing to your symptoms. These foods become strong candidates for your initial elimination diet — helping you identify and remove potential triggers as part of your journey toward feeling better.

Understanding the differences between food reactions

Allergy, intolerance, and sensitivity are often used interchangeably — but they’re not the same. Each involves a different type of reaction in your body, and understanding the difference is key to managing your symptoms effectively.
Food allergy
Food intolerance
Sensitivities

Food allergy

Food allergies trigger an immediate immune reaction involving IgE antibodies. When someone eats a food they’re allergic to, their immune system releases histamine, which can cause symptoms like:

• Swelling
• Itching
• Hives
• Trouble breathing
• In severe cases, anaphylaxis

This is why many allergy medications are called antihistamines — they work by blocking the effects of histamine.

For example, tree nut allergies (to foods like hazelnuts, walnuts, or macadamia nuts) can cause severe, life-threatening reactions. Anaphylaxis can occur within minutes of exposure, potentially leading to a dangerous drop in blood pressure or airway swelling that makes it hard to breathe.

Food intolerance

Food intolerances trigger a different kind of immune response than food allergies.

Although the exact science isn’t fully understood, research suggests that IgG antibody reactions may play a role in symptoms for some people. When combined with an elimination diet, IgG testing can help identify foods that may be causing inflammation-related issues.

Unlike allergies, which cause immediate reactions, symptoms of food intolerances often show up hours or even days later — making it much harder to connect the dots without testing.

Common symptoms reported by our customers include:

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

Sensitivities

Food sensitivities happen when your body can’t properly digest certain foods — usually due to a lack of specific enzymes.

Unlike food allergies or intolerances, sensitivities don’t involve the immune system. Instead, they affect the digestive system.

A common example is lactose sensitivity.

Lactose is the sugar found in cow’s milk, and it requires an enzyme called lactase to break it down. People with lactose sensitivity don’t produce enough lactase, which can lead to symptoms like:

  • Nausea
  • Bloating
  • Diarrhea
  • Stomach discomfort

While food sensitivities aren’t typically dangerous, they can still cause significant discomfort and impact your quality of life if left unmanaged.

Not an Allergy Test, but Much More

Traditional allergy tests only measure IgE reactions — but our IgG test goes further.

It helps uncover delayed food sensitivities that may be affecting your digestion, mood, energy, and overall well-being.

Get personalized insights into how your body responds to everyday foods — and build a diet that truly works for you, with expert guidance from our certified nutritionists.

Unmatched Accuracy with Consistent, Reliable 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.

Personalized, State-of-the-Art Testing

Our test analyzes your immune response to up to 286 food antigens across 13 food groups — covering everything from everyday staples to less common ingredients.

We use advanced multiplex-on-demand technology to create a customized antigen panel, so your results are tailored to your unique dietary concerns and health goals.

Not an Allergy Test, but Much More

Traditional allergy tests only measure IgE reactions — but our IgG test goes further.

It helps uncover delayed food sensitivities that may be affecting your digestion, mood, energy, and overall well-being.

Get personalized insights into how your body responds to everyday foods — and build a diet that truly works for you, with expert guidance from our certified nutritionists.

Unmatched Accuracy with Consistent, Reliable 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.

Personalized, State-of-the-Art Testing

Our test analyzes your immune response to up to 286 food antigens across 13 food groups — covering everything from everyday staples to less common ingredients.

We use advanced multiplex-on-demand technology to create a customized antigen panel, so your results are tailored to your unique dietary concerns and health goals.

What do I get?

1.

Fast Results

Your personalised report is emailed within 3 business days after your sample reaches our lab. No long waits. No doctor visits required.

2.

Free Nutritional Therapist Consultation

Meet with one of our certified nutritionists to help you understand your results and build a plan that works for you.

3.

Health and Nutrition Guides

Get expert tips on interpreting your results and making effective dietary changes.

4.

Food Alternatives Guide:

Access over 30 chapters of suggested swaps to help you follow your new diet without missing out.

5.

Free Online Meal Planner:

1 month of free access to our online meal planner and tailored wellness programs — designed to support your goals and simplify your health journey.

Combining your test with an elimination diet

What is an Elimination Diet?
The Elimination Phase
Reintroducing Foods

An elimination diet is a short-term eating plan that helps you identify foods that may be causing unwanted symptoms.

By temporarily cutting out certain foods — especially those that often trigger sensitivities — you give your body a chance to reset and reduce inflammation. This makes it easier to clearly observe how your body reacts when you gradually reintroduce those foods one at a time.

The Elimination Phase

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.

Items tested

What we test for?

We analyse IgG levels for 286 food and drink items using a blood sample from a finger prick. Each tested item is categorised into one of three reactivity classes:

Class 1 (Low Reactivity) indicates no significant immune response, so these foods can typically remain in your diet unless they cause discomfort.

Class 2 (Medium Reactivity) suggests a moderate response, where reducing consumption may help manage symptoms.

Class 3 (Highly Elevated Reactivity) reflects a strong immune response, and eliminating these foods for 3-6 months is recommended to allow your body to reset.

Buy now

  • Vegetables

    Artichoke, Avocado, Broccoli, Brussels sprouts, Cabbage, Caper, Carrot, Cauliflower, Celery, Chard, Chicory, Chinese cabbage, Chives, Cucumber, Eggplant, Endive, Fennel (bulb), Garlic, Green cabbage, Horseradish, Kohlrabi, Lamb's lettuce, Leek, Nettle leaves, Olive, Onion, Parsnip, Pok-Choi, Potato, Pumpkin (butternut), Pumpkin (hokkaido), Radicchio, Radish, Red beet, Red cabbage, Rocket, Romanesco, Savoy, Shallot, Spinach, Sweet potato, Tomato, Turnip, Watercress, White asparagus, White cabbage, Wild garlic, Zucchini

  • Fish & Seafood

    Cod, Herring, Redfish, Carp, Caviar, Cockle, Common mussel, Crab, Eel, Anchovy, Pilchard, Plaice, Bream, Haddock, Hake, Lobster, Mackerel, Monkfish, Pike, Prawn, Octopus, Oyster, Razor shell, Salmon, Scallop, Sepia, Shrimp mix, Sole, Squid, Swordfish, Trout, Tuna, Turbot, Clam

  • Fruits

    Apple, Apricot, Banana, Blackberry, Blueberry, Cherry, Coconut, Coconut milk, Cranberry, Date, Elderberry, Fig, Gooseberry, Grape, Grapefruit, Kiwi, Lemon, Lime, Lychee, Mango, Melon, Mulberry, Nectarine, Orange, Papaya, Passion fruit, Peach, Pear, Physalis, Pineapple, Plum, Pomegranate, Raisin, Raspberry, Red currant, Strawberry, Tangerine, Watermelon

  • Spices

    Anise, Basil, Bay leaf, Caraway, Cardamom, Cayenne pepper, Chili (red), Cinnamon, Clove, Coriander, Cumin, Curry, Dill, Fenugreek, Ginger, Juniper berry, Lemongrass, Marjoram, Mint, Mustard, Nutmeg, Oregano, Paprika, Parsley, Pepper (black/white/green/red/yellow), Rosemary, Sage, Tarragon, Thyme, Turmeric, Vanilla

  • Grains & Seeds

    Amaranth, Barley, Buckwheat, Corn, Durum, Einkorn, Emmer, Gluten, Hempseed, Linseed, Lupine, Malt(barley), Millet, Oat, Polish wheat, Poppy seed, Pumpkin seed, Quinoa, Rapeseed, Rice, Rye, Sesame, Spelt, Sunflower, Wheat, Wheat bran, Wheat gliadin, Wheatgrass

  • Dairy & Eggs

    Buffalo milk, Buttermilk, Camembert, Cottage cheese, Cow milk, Egg white, Egg yolk, Emmental, Goat cheese, Goat milk, Gouda, Mozzarella, Parmesan, Quail egg, Sheep cheese, Sheep milk

  • Meat

    Beef, Boar, Chicken, Duck, Goat, Lamb, Pork, Rabbit, Stag, Turkey, Veal, Venison

  • Nuts

    Almond, Brazil nut, Cashew, Hazelnut, Kola nut, Macadamia, Pecan nut, Pine nut, Pistachio, Sweet chestnut, Tigernut, Walnut

  • Coffee & Tea

    Chamomile, Cocoa, Coffee, Hibiscus, Jasmine, Peppermint, Tea (black), Tea(green)

  • Beans & Peas

    Chickpea, Greenbean, Lentil, Mungbean, Pea, Peanut, Soy, Sugar pea, Tamarind, Whitebean

  • Fungi & Yeasts

    Aspergillus niger, Baker's yeast, Boletus, Brewer's yeast, Chanterelle, Enoki, French horn mushroom, Oystermushroom, White mushroom

  • Milk Proteins

    Cow Milk Protein (Casein), Cow Milk Protein (Beta-lactoglobulin), Cow Milk Protein (Alpha-lactalbumin)

  • Sugars & Sweeteners

    Cane sugar, Honey

  • Superfoods & Novel Ingredients

    Almond milk, Chia seed, Chlorella, Dandelion root, Ginkgo, Ginseng, Greater burdock root, Guarana, Maca root, Nori, Safflower oil, Spirulina, Tapioca, Wakame, Yacón root

  • Miscellaneous

    Agar, Cross-Reactive Allergens (CCDs), Elderflower, Food Protein Bonding Agent (M-Transglutaminase), Hops

What we test for?

We analyse IgG levels for 286 food and drink items using a blood sample from a finger prick. Each tested item is categorised into one of three reactivity classes:

Class 1 (Low Reactivity) indicates no significant immune response, so these foods can typically remain in your diet unless they cause discomfort.

Class 2 (Medium Reactivity) suggests a moderate response, where reducing consumption may help manage symptoms.

Class 3 (Highly Elevated Reactivity) reflects a strong immune response, and eliminating these foods for 3-6 months is recommended to allow your body to reset.

  • Vegetables

    Artichoke, Avocado, Broccoli, Brussels sprouts, Cabbage, Caper, Carrot, Cauliflower, Celery, Chard, Chicory, Chinese cabbage, Chives, Cucumber, Eggplant, Endive, Fennel (bulb), Garlic, Green cabbage, Horseradish, Kohlrabi, Lamb's lettuce, Leek, Nettle leaves, Olive, Onion, Parsnip, Pok-Choi, Potato, Pumpkin (butternut), Pumpkin (hokkaido), Radicchio, Radish, Red beet, Red cabbage, Rocket, Romanesco, Savoy, Shallot, Spinach, Sweet potato, Tomato, Turnip, Watercress, White asparagus, White cabbage, Wild garlic, Zucchini

  • Fish & Seafood

    Cod, Herring, Redfish, Carp, Caviar, Cockle, Common mussel, Crab, Eel, Anchovy, Pilchard, Plaice, Bream, Haddock, Hake, Lobster, Mackerel, Monkfish, Pike, Prawn, Octopus, Oyster, Razor shell, Salmon, Scallop, Sepia, Shrimp mix, Sole, Squid, Swordfish, Trout, Tuna, Turbot, Clam

  • Fruits

    Apple, Apricot, Banana, Blackberry, Blueberry, Cherry, Coconut, Coconut milk, Cranberry, Date, Elderberry, Fig, Gooseberry, Grape, Grapefruit, Kiwi, Lemon, Lime, Lychee, Mango, Melon, Mulberry, Nectarine, Orange, Papaya, Passion fruit, Peach, Pear, Physalis, Pineapple, Plum, Pomegranate, Raisin, Raspberry, Red currant, Strawberry, Tangerine, Watermelon

  • Spices

    Anise, Basil, Bay leaf, Caraway, Cardamom, Cayenne pepper, Chili (red), Cinnamon, Clove, Coriander, Cumin, Curry, Dill, Fenugreek, Ginger, Juniper berry, Lemongrass, Marjoram, Mint, Mustard, Nutmeg, Oregano, Paprika, Parsley, Pepper (black/white/green/red/yellow), Rosemary, Sage, Tarragon, Thyme, Turmeric, Vanilla

  • Grains & Seeds

    Amaranth, Barley, Buckwheat, Corn, Durum, Einkorn, Emmer, Gluten, Hempseed, Linseed, Lupine, Malt(barley), Millet, Oat, Polish wheat, Poppy seed, Pumpkin seed, Quinoa, Rapeseed, Rice, Rye, Sesame, Spelt, Sunflower, Wheat, Wheat bran, Wheat gliadin, Wheatgrass

  • Dairy & Eggs

    Buffalo milk, Buttermilk, Camembert, Cottage cheese, Cow milk, Egg white, Egg yolk, Emmental, Goat cheese, Goat milk, Gouda, Mozzarella, Parmesan, Quail egg, Sheep cheese, Sheep milk

  • Meat

    Beef, Boar, Chicken, Duck, Goat, Lamb, Pork, Rabbit, Stag, Turkey, Veal, Venison

  • Nuts

    Almond, Brazil nut, Cashew, Hazelnut, Kola nut, Macadamia, Pecan nut, Pine nut, Pistachio, Sweet chestnut, Tigernut, Walnut

  • Coffee & Tea

    Chamomile, Cocoa, Coffee, Hibiscus, Jasmine, Peppermint, Tea (black), Tea(green)

  • Beans & Peas

    Chickpea, Greenbean, Lentil, Mungbean, Pea, Peanut, Soy, Sugar pea, Tamarind, Whitebean

  • Fungi & Yeasts

    Aspergillus niger, Baker's yeast, Boletus, Brewer's yeast, Chanterelle, Enoki, French horn mushroom, Oystermushroom, White mushroom

  • Milk Proteins

    Cow Milk Protein (Casein), Cow Milk Protein (Beta-lactoglobulin), Cow Milk Protein (Alpha-lactalbumin)

  • Sugars & Sweeteners

    Cane sugar, Honey

  • Superfoods & Novel Ingredients

    Almond milk, Chia seed, Chlorella, Dandelion root, Ginkgo, Ginseng, Greater burdock root, Guarana, Maca root, Nori, Safflower oil, Spirulina, Tapioca, Wakame, Yacón root

  • Miscellaneous

    Agar, Cross-Reactive Allergens (CCDs), Elderflower, Food Protein Bonding Agent (M-Transglutaminase), Hops

FAQ

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.

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.

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.

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.

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

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

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.

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

You’ll receive an easy-to-read report via email, along with guidance and support on your next steps.

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.