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How Much Is Food Sensitivity Testing?

Wondering how much is food sensitivity testing? Learn about costs, the difference between blood and hair tests, and how to get results for 260 foods for £179.
March 18, 2026

Table of Contents

  1. Introduction
  2. The Price of Clarity: What to Expect
  3. Why Prices Vary: Blood vs. Hair Testing
  4. The Smartblood Method: A Phased Journey
  5. Understanding the Difference: Allergy vs. Intolerance
  6. Is the Cost of Testing Worth It?
  7. What Does a Smartblood Result Look Like?
  8. How to Prepare for Your Test
  9. The Debated Science of IgG Testing
  10. Hidden Costs and Savings
  11. Taking the Next Steps
  12. Conclusion
  13. FAQ

Introduction

Have you ever finished a meal only to find yourself unbuttoning your trousers an hour later because of uncomfortable bloating? Or perhaps you struggle with persistent "brain fog," skin flare-ups, or fatigue that doesn't seem to shift, no matter how much tea you drink or how early you go to bed. In the UK, many of us live with these "mystery symptoms" for years. We often visit our GP, and while it is reassuring to hear that our blood tests are "normal" and there is nothing clinically wrong, it can leave us feeling stranded without a solution.

When standard medical checks don't provide an answer, many people begin to wonder if their diet is the culprit. To see a structured, clinical route for solving this, read our phased approach to finding food intolerances.

When standard medical checks don't provide an answer, many people begin to wonder if their diet is the culprit. Naturally, the next question is: how much is food sensitivity testing? You may have seen various kits online or in high-street health shops, with prices ranging from the cost of a takeaway to several hundreds of pounds. This price variation can be confusing, making it difficult to know which route is trustworthy and which is simply a waste of money.

In this article, we will explore the costs involved in food sensitivity testing, what you are actually paying for when you order a lab-verified test, and why the price can vary so significantly. More importantly, we will guide you through the "Smartblood Method"—a clinically responsible, phased approach to identifying trigger foods. We believe that testing is not a shortcut or a "first resort," but a structured tool to be used alongside a GP’s oversight and a dedicated elimination diet.

The Price of Clarity: What to Expect

When researching how much is food sensitivity testing, you will encounter a broad spectrum of prices. In the UK market, a high-quality, laboratory-based food intolerance test typically costs between £150 and £300. At Smartblood, our comprehensive test is priced at £179.00. You can view and purchase the Smartblood Food Intolerance Test on our product page.

This price reflects several factors that are essential for a reliable result. Unlike cheaper alternatives that may use unproven methods, a professional test involves complex laboratory processes. Here is a breakdown of what that investment usually covers:

  • Laboratory Analysis: Your sample is processed in a regulated pathology laboratory. Scientists look for specific markers—usually IgG antibodies—which are the "memory" cells of your immune system.
  • The Scope of the Test: The cost is often tied to how many foods are being analysed. A basic panel might test 40 items, whereas our test analyses 260 different foods and drinks.
  • Logistics and Kits: This includes the sterile finger-prick kit sent to your home, the postage to the lab, and the secure digital delivery of your results.
  • Support and Guidance: A trustworthy provider doesn’t just send you a list of "red" foods and leave you to it. The cost should include clear, actionable reporting and guidance on how to safely trial an elimination diet.

It is important to be cautious of tests that seem "too good to be true" at a very low price point. In the world of health diagnostics, you are paying for the rigour of the science and the accuracy of the equipment used to analyse your blood.

Why Prices Vary: Blood vs. Hair Testing

One of the most common reasons for price confusion is the method used for the test. You may see "intolerance tests" advertised for as little as £20 or £30, often requiring only a few strands of hair.

At Smartblood, we use blood-based analysis (ELISA technology) to measure IgG antibodies. This is a biochemical process that identifies how your immune system is reacting to food proteins. Because this requires a physical lab and specialised equipment, it is more expensive to perform.

Hair testing, often referred to as bioresonance, claims to measure the "energy" or "frequency" of food items against your hair. While these tests are significantly cheaper and less invasive, they are not based on immunological science. Many medical professionals and regulatory bodies remain sceptical of bioresonance for food intolerance, as it does not measure an immune response.

If you are looking for data that can help you have a meaningful conversation with a nutrition professional or your GP, a blood-based IgG test is generally considered the industry standard for food sensitivity. When you ask how much is food sensitivity testing, ensure you are comparing like-for-like methods.

The Smartblood Method: A Phased Journey

Before we dive deeper into the costs, it is vital to understand where testing fits into your health journey. We do not believe in testing as a "quick fix" or a first step. True well-being comes from understanding the body as a whole. We recommend a three-stage approach:

Phase 1: Consult Your GP

Before spending any money on private testing, you must visit your GP. Mystery symptoms like bloating, fatigue, and chronic headaches can sometimes be signs of underlying medical conditions that require clinical treatment.

Your GP can rule out things like:

  • Coeliac Disease: An autoimmune reaction to gluten (which requires a specific IgE-mediated or antibody test while you are still eating gluten).
  • Inflammatory Bowel Disease (IBD): Such as Crohn’s or Ulcerative Colitis.
  • Iron-Deficiency Anaemia: Which often causes the same fatigue associated with food intolerances.
  • Thyroid Issues: Which can affect your metabolism and energy levels.

At Smartblood, we are GP-led. We believe our tests should complement the care you receive from the NHS, not replace it. Once your doctor has confirmed there is no underlying disease, you are in a much safer position to explore food sensitivities.

Phase 2: The Elimination Trial

The most effective way to identify a food trigger is a structured elimination and reintroduction diet. This costs nothing but your time and attention. We provide free symptom-tracking charts and elimination guides on our website — for practical tools and a downloadable chart, see our guide on how to test for food intolerance at home.

Imagine you suspect that dairy might be causing your afternoon headaches. Instead of guessing, you would remove all dairy for three to four weeks while keeping a meticulous diary of how you feel. If the headaches disappear, you then reintroduce dairy and monitor for a reaction.

Phase 3: Targeted Testing

If you have tried an elimination diet and are still "stuck"—perhaps your symptoms are intermittent, or you have so many "suspects" that you don't know where to start—this is when testing becomes valuable.

A Smartblood test provides a "snapshot" of your body's IgG reactions to 260 foods. This data helps you narrow down the list of foods to eliminate, making your dietary trial much more structured and less overwhelming. Instead of cutting out everything, you can focus on the specific items where your immune system is showing a high reactivity.

Understanding the Difference: Allergy vs. Intolerance

When discussing the cost and purpose of testing, it is crucial to distinguish between a food allergy and a food intolerance. These are two very different biological responses, and they require different types of tests.

Food Allergy (IgE-Mediated)

A food allergy is an immediate and potentially life-threatening immune response. It involves IgE antibodies. Symptoms usually appear within minutes of eating even a tiny amount of the food.

Warning: If you or someone you are with experiences swelling of the lips, face, or throat, difficulty breathing, wheezing, a rapid drop in blood pressure, or collapse, this is a medical emergency. Call 999 or go to your nearest A&E immediately.

A food allergy test (often a skin-prick or IgE blood test) must be conducted by a clinical allergist or via your GP. Smartblood testing is not an allergy test and is not suitable for people with suspected anaphylaxis or severe allergic reactions.

Food Intolerance (IgG-Mediated)

A food intolerance (or sensitivity) is usually non-life-threatening. The symptoms are often delayed, appearing anywhere from a few hours to two days after consumption. This delay is why it is so hard to identify triggers without help; you might be reacting on Tuesday to something you ate on Sunday.

Intolerances involve IgG antibodies. While the science of IgG testing is debated in some medical circles, many people find it a useful "compass" to guide their elimination diets. It doesn't provide a lifelong diagnosis but rather a roadmap for which foods to investigate further.

If you have questions about what the test measures or how to interpret antibody levels, visit our FAQ page for detailed answers.

Is the Cost of Testing Worth It?

When considering how much is food sensitivity testing, many people weigh the £179.00 price tag against the potential "cost" of continuing to feel unwell. To help you decide if it is a wise investment, consider these practical scenarios.

Scenario: The "Healthy" Eater's Struggle

Consider someone who has recently switched to a very "clean" diet, full of kale, quinoa, almonds, and legumes. Despite eating what they believe is "perfectly," they are more bloated than ever. They might assume it's the fibre, but an IgG test could reveal a high reactivity to almonds—a staple in their new diet. Without the test, they might have continued eating the very thing that was causing the discomfort, simply because it is traditionally labelled as "healthy." In this case, the test saves months of guesswork and frustration.

Scenario: The Mystery Headache

If you suffer from regular headaches that don't respond to hydration or better sleep, you might suspect a food trigger like caffeine or chocolate. However, if the culprit is actually something obscure like yeast or a specific type of spice, you might never find it through a basic elimination diet. The £179.00 investment provides a wide-angle lens (260 foods), catching triggers that you might never have thought to test yourself.

What Does a Smartblood Result Look Like?

When you invest in a test, you aren't just getting a "yes/no" answer. Our results provide a detailed breakdown using a 0–5 reactivity scale.

  • 0–2 (Green): Normal reactivity. These foods are unlikely to be causing your current symptoms.
  • 3 (Amber): Borderline reactivity. These are foods you might want to limit or monitor closely.
  • 4–5 (Red): High reactivity. These are the primary candidates for a structured elimination trial.

By categorising 260 foods—from common grains and dairy to exotic fruits and herbs—we give you a clear hierarchy of where to start your dietary changes. You receive these results via email, typically within three working days after our lab receives your sample; details on turnaround and guarantees are available on the Smartblood product page.

How to Prepare for Your Test

If you decide that the cost of testing is a worthwhile investment for your health, there are a few things to keep in mind to ensure you get the best value for your money.

First, do not cut out any foods before taking the test. Because we are measuring your immune system's "memory" (IgG antibodies), you need to have been eating the foods recently for them to show up. If you haven't eaten eggs for six months, your body may not be producing detectable antibodies to them, even if you are sensitive. Our FAQ explains this in more detail.

Second, ensure you are well-hydrated. The test requires a small finger-prick blood sample. Being hydrated makes the process much easier and ensures the blood flows freely into the collection tube.

Finally, keep a symptom diary for the week leading up to the test. This will be invaluable when you receive your results, as you can cross-reference your "high reactivity" foods with the days your symptoms were at their worst.

The Debated Science of IgG Testing

It is important to be transparent: IgG testing is not used by the NHS to diagnose food allergies or coeliac disease. In the medical community, the presence of IgG antibodies is sometimes viewed as a normal sign of "exposure" to food rather than a "sensitivity."

However, at Smartblood, we view these results differently. We see them as a clinical tool to guide a structured elimination and reintroduction plan. Many of our customers find that when they temporarily remove the foods they show high IgG reactivity to, their symptoms improve significantly.

We don't claim that the test "cures" conditions. Instead, we frame it as a way to reduce the guesswork. If your results show a level 5 reaction to cow's milk, it gives you a logical reason to try a four-week dairy-free trial. The "proof" of the intolerance comes when you feel better during the elimination phase and symptoms return upon reintroduction.

Hidden Costs and Savings

When asking how much is food sensitivity testing, you should also look for any hidden extras. Some companies charge separately for shipping, "physician reviews," or follow-up consultations.

At Smartblood, we aim for total transparency. Our £179.00 price is inclusive of the kit, lab analysis of 260 foods, and your detailed report. We also occasionally offer discounts to make the process more accessible — check the Food Intolerance Test page at checkout for current promotions and the ACTION coupon code.

Retesting is another cost to consider. We don't believe you should have to test every month. Once you have identified your triggers and healed your gut through a managed elimination diet, many people find they can eventually reintroduce their "trigger" foods in moderation without symptoms returning. We typically suggest that a single, well-timed test is enough for most people to make lasting changes.

Taking the Next Steps

Identifying a food intolerance is a marathon, not a sprint. The test is merely the starting gun. Once you have your results, the real work begins with your elimination diet.

  1. Review your "Red" foods: Identify the 3–5 items with the highest scores.
  2. Plan your substitutes: If you are cutting out wheat, explore alternatives like buckwheat, rice, or quinoa.
  3. The 4-Week Reset: Remove these items entirely for 28 days.
  4. The Reintroduction: Introduce one food at a time, every three days, and watch for symptoms. For step-by-step guidance, see our practical guide on how to test for intolerance at home.

If you still have questions about ordering, sample collection, or interpreting your results, please contact our team and we’ll be happy to help.

Conclusion

So, how much is food sensitivity testing? While you can find options across many price points, a reliable, lab-led analysis of a wide range of foods typically costs around £179.00.

At Smartblood, we believe this cost represents more than just a lab report; it is an investment in clarity. However, we urge you to follow the Smartblood Method. Start with your GP to rule out serious medical conditions. Try a free elimination diet and keep a symptom diary. If you are still searching for answers, consider our Food Intolerance Test as a structured way to guide your dietary trials.

By taking a phased, responsible approach, you can move away from "mystery symptoms" and toward a better understanding of your body. If you are ready to take that step, our kit analyses 260 foods and drinks, providing priority results within three working days of the lab receiving your sample. Remember to check if our code ACTION is available for a 25% discount, bringing the price down significantly.

FAQ

How much is food sensitivity testing on the NHS?

In the UK, food sensitivity or intolerance testing is generally not available on the NHS. The NHS focuses on diagnosing IgE-mediated food allergies and conditions like coeliac disease or inflammatory bowel disease. Because IgG testing is considered a tool for managing lifestyle-based intolerances rather than a diagnostic for a disease, it usually remains a private health investment.

Is a £20 hair test as accurate as a blood test?

Generally, no. Hair testing (bioresonance) does not measure an immune system response. While much cheaper, it is not supported by the same immunological science as blood-based IgG testing. If you are looking for a test that identifies how your immune system is reacting to food proteins, a finger-prick blood test processed in a pathology lab is the recommended method.

Does the £179 price include a consultation?

At Smartblood, our £179.00 test provides a comprehensive report covering 260 foods with a 0-5 reactivity scale. This report is designed to be clear and actionable, allowing you to start your own elimination diet or take the results to a nutritional professional. While some providers offer consultations at an extra cost, we focus on providing high-quality lab data to guide your personal health journey.

Can I get a discount on the Smartblood food intolerance test?

Yes, we frequently offer promotions to help make testing more accessible. You can currently check our product page for the code ACTION, which may provide 25% off the standard price. We believe in providing transparent pricing without hidden fees for shipping or reporting, so you know exactly what your investment covers from the start.