Food Intolerance Testing
Discover how your body responds to the foods you eat
YOUR BLOOD TELLS A STORY
Bloating, fatigue, or just not sure? Our IgG and IgA food panels screen your antibody responses to everyday foods — giving you a clear, structured starting point for an elimination and reintroduction plan.
i-screen is a UK health screening platform offering access to UKAS-accredited laboratory testing. Our food intolerance range lets you choose the right panel for your diet — from a focused 96-food screen to our most comprehensive 240-food assessment — all ordered online with test kits posted directly to your door.
| 5 panels tailored to your diet | From £211 for a 96-food screen | 5–20 days to get your results |
How food intolerance testing works
A simple sample measures your IgG and IgA antibody responses across a defined panel of foods. The results map how your body responds to each food, helping you and your health professional build a personalised elimination and reintroduction plan.
Choose the option that suits you:
- IgG — the most popular marker for delayed-type food responses.
- IgA — looks at mucosal (gut-lining) antibody responses, often chosen alongside IgG.
- IgG + IgA Combination — both antibody types in one order for the fullest picture.
- IgG4 General Foods (NEW) — an IgG4 subclass option, now available across our 96, 144 and 240 food panels.
Good to know
Food intolerance testing measures IgG and IgA antibody responses. It is different from IgE allergy testing and does not diagnose a food allergy or coeliac disease. Results are best used as a guide alongside advice from a qualified health professional. If you have a known severe allergy, speak to your doctor.
Every panel also includes a Candida Albicans screen. Prices shown are per test in GBP and include lab fees. Results are typically ready in 5-20 days.
* Results in 5 days for Food Intolerance Check All other panels are 17-20 business days
Our most popular food panel — everyday Western staples across dairy, proteins, grains, fruits and vegetables.
| TEST OPTION | PRICE |
|---|---|
| IgG96 POPULAR Delayed-response antibodies — our most popular screen | £211 |
| IgA96 Mucosal (gut-lining) antibody responses | £211 |
| IgG5-200 Food Intolerance Check* | £254 |
| IgG+IgA 96 Combination Both antibody types in one test — the fullest picture | £279 |
| IgG4 General Foods 96 Foods NEW IgG4 subclass response — our newest option | £235 |
Results in 5-20 days.
What's tested
- Dairy Casein, Cheddar Cheese, Cow's Milk, Goat's Milk, Whey
- Fish/Shellfish Clam, Cod, Crab, Halibut, Lobster, Salmon, Scallop, Shrimp, Sole, Trout, Tuna
- Grains/Legumes/Nuts Almond, Barley, Buckwheat, Chestnut, Chickpea, Coconut, Corn, Gliadin, Wheat Gluten, Wheat, Green Bean, Green Pea, Hazelnut, Kidney Bean, Lentil, Lima Bean, Oat, Peanut, Pecan, Pinto Bean, Rye, Soybean, Spelt, Walnut, Whole Wheat, White Rice
- Fruits Apple, Apricot, Banana, Blueberry, Cranberry, Grapefruit, Grape, Lemon, Olive, Orange, Papaya, Peach, Pear, Pineapple, Plum, Raspberry, Strawberry
- Meat/Poultry Beef, Chicken, Lamb, Pork, Turkey
- Egg Chicken Egg White, Chicken Egg Yolk, Whole Egg, Duck
- Misc/Herbs/Spices Baker's / Brewer's Yeast, Button Mushroom, Cane Sugar, Cocoa Bean (Chocolate), Coffee Bean, Flaxseed, Ginger, Honey, Oregano, Sesame Seed, Sunflower Seed
- Vegetables Asparagus, Avocado, Beet, Broccoli / Brussel Sprouts, Cabbage, Carrot, Cauliflower, Celery, Cucumber, Garlic, Green Bell Pepper, Lettuce, Onion, Pumpkin, Spinach, Sweet Potato, Tomato, White Potato
- Candida Screen Candida Albicans