Food Allergy, Intolerance & Sensitivity testing

Allergy involves IgE‑mediated immune responses and can be life-threatening; intolerance is dose‑dependent, digestive and generally non‑life-threatening; sensitivity may involve other immune pathways.

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.

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.

Allergies can include hives, swelling, breathing difficulty, vomiting, or anaphylaxis. Intolerances cause bloating, diarrhea, nausea, gas and abdominal pain.

By removing potential trigger foods for 2–4 weeks, then reintroducing them one-by-one to identify causes of symptoms.

All our reports include a full breakdown by item, displaying a simple colour-coded reactivity ratings, detailed insights, and free support from registered nutritionists.

Our IgG and IgE functional medicine tests include a 1-2-1 virtual consultation with a full qualified Nutritionist so you can discuss your personalised results in more detail.

Prices range from £16–£39 for sensitivity tests and £129–£199 for allergy (IgE) or intolerance (IgG) tests. Results are delivered within 3–5 days.

At Check My Body Health, we're proud to be a global leader in health and wellness testing - trusted by hundreds of thousands of customers across more than 40 countries.

Here’s why so many people choose us:

• We've helped over 500,000 people worldwide better understand their bodies and take control of their health journey.
  
• We’re independently rated the #1 provider in both the "Laboratory" and "Alternative Medicine Practitioner" categories on Trustpilot, with over 7,500 5-star reviews and counting.
  
• We offer a wide range of functional and holistic health tests, from food and drink intolerances to gut health, nutritional imbalances, and environmental sensitivities - so you can choose the test that suits your unique needs.
  
• Every test includes a clear, detailed report, plus some have the option of 1-2-1 virtual consultations with a qualified nutritionist, giving you support beyond the results.

When you choose Check My Body Health, you’re not just buying a test - you’re starting a personalised journey towards feeling your best.