Essential Food Intolerance Test
Essential Food Intolerance Test
Essential Food Intolerance Test
Essential Food Intolerance Test
Essential Food Intolerance Test
Essential Food Intolerance Test
Essential Food Intolerance Test
Essential Food Intolerance Test
Essential Food Intolerance Test
Essential Food Intolerance Test

Essential Food Intolerance Test

Our simple at-home food intolerance test helps identify your body’s unique reactions to 229 foods and drinks. Backed by doctors and nutritionists, your sample is processed in our accredited UK lab - with results typically delivered in just 3 working days. Start making informed, confident choices about your diet, and feel the difference in energy, digestion, and overall wellbeing.
£169.00 £199.00
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Unlock better digestion, clearer skin, enhanced energy, and a healthier you with our essential at-home food intolerance test kit. Designed for ease, accuracy, and life-changing results, this simple finger-prick blood test identifies sensitivities to 229 everyday foods — helping you take control of bloating, fatigue, skin issues, brain fog, and unwanted weight gain.

Every order includes a virtual consultation with a fully qualified Nutritionist, plus 1 month of free access to our exclusive online meal planner and health programme — making it easier than ever to upgrade your nutrition, build lasting habits, and feel your best. And for ongoing support, our expert team of GPs and Nutritionists are just a message away, ready to guide you every step of your journey.

Take the guesswork out of your health. Our essential food intolerance test empowers you to make informed, confident choices about what you eat — and feel the difference in as little as 10 days.

What’s included?

  • Feature Icon Tests 229 common foods
  • Feature Icon Finger prick blood sample
  • Feature Icon Easy home testing
  • Feature Icon Fast results within 3 working days
  • Feature Icon Free shipping & sample returns
  • Feature Icon Video consultation with a nutritionist

Laboratory Testing

Essential Food Intolerance Test - IgG Blood Test

What it is A laboratory blood test using a small finger-prick sample, measuring food-specific IgG antibodies across a panel of common food and drink items.
What it looks at Your IgG antibody response to specific foods — associated by some practitioners with delayed sensitivities behind ongoing digestive or energy-related symptoms.
Best for
  • Exploring whether specific foods may be linked to ongoing symptoms
  • Supporting a structured elimination-and-reintroduction approach
  • Anyone who's separately investigated allergy and wants to look at food-related patterns instead

IgG testing for food intolerance is not currently part of NHS diagnostic pathways and its clinical significance is debated within mainstream medicine. Long-term immunosuppressive therapy or steroid use may reduce antibody levels and affect results.

Compare all three test methods →

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*

What items do we test?

What we test for?

We analyse IgG levels for 229 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

  • Milk Proteins

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

  • Miscellaneous

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

  • 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

  • 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

What we test for?

We analyse IgG levels for 229 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

  • Milk Proteins

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

  • Miscellaneous

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

  • 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

  • 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
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 microarray 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 microarray technology
Most advanced test in the UK

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.

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

14 million

people in the UK experience reactions to foods.*

*Survey commissioned by Allergy UK of 5286 participants. Participants questioned 3 months after IgG food test:(BDA, 2015)

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.

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.