Description
Starter Food Intolerance Blood Test
If you often feel bloated, sluggish, or unwell after eating but can’t pinpoint why, a Food Intolerance Blood Test could help you uncover the root cause.
Unlike food allergies—which produce immediate and sometimes severe reactions—food intolerances can lead to delayed symptoms that show up hours or even days later.
These responses are typically more subtle and can be difficult to link to specific foods without testing.
Food intolerances are associated with IgG antibodies, which are part of your immune system’s delayed reaction to certain foods. When your body struggles to process or tolerate a food, it may trigger a range of symptoms such as bloating, cramps, constipation, diarrhoea, fatigue, headaches, brain fog, low mood, joint pain, and skin issues like acne, rashes, or eczema.
This test uses a small blood sample to detect raised IgG antibody levels against a broad panel of commonly eaten foods—including dairy, wheat, gluten, eggs, soy, and various nuts. Elevated levels may indicate that your body is reacting adversely to specific foods.
With your results in hand, a nutritionist or healthcare provider can help you develop a personalised elimination plan—removing suspected trigger foods, then reintroducing them one by one while monitoring your symptoms. It’s a structured, evidence-based approach to improving your health and wellbeing.
Whether you’re dealing with persistent digestive discomfort, tiredness, skin flare-ups, or just not feeling your best, a Food Intolerance Blood Test can provide valuable insights and a clear starting point to help you feel better—naturally and confidently.
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
- Persistent Bloating
- Fatigue and Low Energy
- Brain Fog
- Digestive Issues
- Unexplained Headaches or Migraines
- Skin Problems
- Mood Changes
- Joint Pain or Stiffness
- Difficulty Identifying Trigger Foods
- Long-Term Gut Concerns
- Desire for Personalised Dietary Guidance
- Support for Health Goals
- Almond
- Apple
- Celery
- Cod Fish
- Carrot
- Casein
- Egg white
- Egg yolk
- Hazelnut
- Milk
- Peanut
- Peach
- Potato
- Rye Flour
- Sesame seed
- Shrimp
- Soya bean
- Tomato
- Walnut
- Wheat
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 antibodies are a type of protein made by your immune system. They help your body recognise and remember foreign substances like bacteria, viruses, and even certain foods.
In food intolerance testing, raised levels of IgG antibodies to specific foods may suggest that your immune system is reacting to those foods in a delayed way. This isn’t a food allergy (which involves IgE antibodies and immediate reactions), but a slower, ongoing immune response.
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.
