Description
Advanced Food Intolerance Blood Test
If you often feel bloated, tired, foggy-headed, or notice skin breakouts after meals, it might not just be coincidence. These could be signs of a food intolerance.
Unlike food allergies—which cause immediate and often severe reactions—food intolerances typically involve a delayed immune response.
This means symptoms can appear several hours, or even days, after eating a trigger food, making it difficult to identify the cause without proper testing.
Food intolerance can affect everyone differently. For some, it leads to uncomfortable digestive issues like gas, cramps, or irregular bowel movements. Others may experience low mood, lack of focus, or constant fatigue that seems to have no clear explanation. Skin concerns like eczema, acne, or general inflammation are also common signs that the body may be reacting to certain foods.
Our food intolerance blood test is designed to uncover these hidden sensitivities by measuring IgG antibody levels—an immune marker that may increase when your body reacts to specific foods. We test your response to a broad panel of everyday ingredients, including dairy, grains, vegetables, fruits, nuts, seeds, legumes, fish, and meat.
With your personalised results, you’ll be able to see which foods may be contributing to your symptoms. This empowers you to make targeted changes to your diet—whether that means cutting out certain foods temporarily, following an elimination diet, or working with a nutritionist to rebalance your meals.
Stop guessing and start understanding what your body is trying to tell you. With the right information, you can take real steps toward feeling clearer, lighter, and more energised every day.
How often should I have a Food Intolerance Blood Test?
Most people only need a Food Intolerance Blood Test once—unless symptoms change.
It’s a smart way to get clarity and adjust your diet confidently.
Our Nurses visit your Home or Work to take your blood.
Pick a time and date to suit you.
Your results are available online within days of your blood being taken.
Other Questions
- Frequent bloating or stomach discomfort
- Excess gas, cramps, or indigestion
- Constipation or diarrhoea
- Feeling tired or sluggish after meals
- Persistent fatigue or low energy throughout the day
- Brain fog, poor concentration, or forgetfulness
- Headaches or migraines with no clear cause
- Skin issues like acne, rashes, or eczema
- Joint pain or general inflammation
- Mood swings, irritability, or low mood
- Almond
- Onion
- Apple
- Orange
- Banana
- Oat
- Buckwheat
- Peach
- Cabbage
- Peanut
- Carrot
- Potato
- Celery
- Rice
- Casein
- Rye flour
- Cheese (cheddar)
- Salmon
- Cod fish
- Sesame seed
- Chicken meat
- Shrimp
- Corn (maize)
- Soya bean
- Crab
- Tomato
- Egg white
- Tuna
- Egg yolk
- Walnut
- Hazelnut
- Wheat
- Garlic
- White Bean
- Milk
- Mustard
Take the blood test as early as possible if you experience bloating, fatigue, brain fog, or skin flare-ups after eating.
Collection method: Venous blood
Results available: 1-2 days after the sample has reached the laboratory.
IgG as a Biomarker
IgG (Immunoglobulin G) is an antibody that signals your immune system has been exposed to certain foods.
In food intolerance testing, raised IgG levels may suggest your body is reacting to those foods, potentially causing delayed symptoms like bloating, fatigue, or skin issues.
While not a diagnosis on its own, IgG is a helpful marker for identifying possible food sensitivities when reviewed alongside your symptoms and dietary habits.
How it Works
1. Order a Test
Order your test, and then Answer the Questions about why you’re taking that test.
Our nurse will contact you for dates, so they can take your blood sample at your home.
Our nurse will then send your sample to our laboratory.
2. Our laboratory team run the tests
Our skilled laboratory staff conduct your blood tests in a clean and secure environment, ensuring accuracy and reliability.
Each test follows strict protocols to maintain the highest quality standards.
3. Receive Your Results within 7 days
We will email you to inform you that your blood test results are ready.
The email will have a PDF report attached, sent directly to your inbox.
4. Monitor your levels over time
With regular ongoing tests and reports, you can track your results. The reports can be shared with your GP.
Check if you’re improving healthily or where changes could be made.
