Gut Health Test in London
Please note that Gut Health tests are only available as part of our consultation package. They are required to help our nutrition experts support you in getting to the root cause of your health concerns.
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Gut Health Test in LondonPersistent bloating, irregular bowel habits, heartburn, abdominal discomfort, or digestive symptoms that keep returning without a clear explanation are signs that the gut microbiome may be out of balance. At the London Clinic of Nutrition, our functional medicine practitioners use advanced gut testing in London to investigate what is happening beneath the surface. This includes stool testing to assess bacterial balance, immune function, and digestive capacity, as well as SIBO breath testing for small intestinal bacterial overgrowth. Rather than managing symptoms in isolation, we look for the root cause of your gut complaint so that the right support can be put in place. We work with clients across London and throughout the UK, with consultations available online. |  |
 | Is there a test to check gut health?Here, at the London Clinic of Nutrition, we use two main types of testing to assess the health of the gut microbiome: Stool testingStool testing is one of the best and most comprehensive gut health tests available. It provides a precise assessment of gastrointestinal health and the gut microbiome. It accurately measures levels of gut bacteria (good & bad), yeast (e.g. candida), parasites; H-Pylori, and markers for inflammation, immune function and digestive capacity. We carefully select the best stool tests available that provide us with actionable markers. |
Types of Gut Tests Available
🔬 GI EcologiXAssesses gut microbiome balance and bacterial diversity. Commonly used for patients experiencing IBS, bloating and other digestive symptoms. | 🧬 GI360Provides analysis of gut bacteria, pathogens and digestive function. Suitable for individuals with chronic digestive complaints and complex gut health concerns. |
🦠 GI EffectsA comprehensive assessment of gut function, microbiome health and digestive performance. Often recommended for patients with long-standing digestive symptoms. | 🫁 SIBO Breath TestMeasures hydrogen and methane gases produced by bacteria in the small intestine. Commonly used for patients experiencing bloating, gas and constipation where bacterial overgrowth is suspected. |
Please be advised that this is only a small range of tests available. We would generally recommend the most appropriate testing following an initial consultation so we can ensure you are doing the most suitable tests for your needs.
Symptoms That May Benefit From Gut Testing
Gut testing may be beneficial if you experience ongoing digestive symptoms or unexplained health concerns that could be linked to imbalances in the gut microbiome. While symptoms vary from person to person, common signs that may warrant further investigation include:
Bloating and excessive gas | Diarrhoea | Constipation | Abdominal discomfort |
Brain fog and poor concentration | Fatigue and low energy | Skin concerns such as eczema, acne or unexplained rashes | Mood changes, anxiety or low mood |
Recurrent colds and infections | Food sensitivities |
Many factors can influence gut health, including stress, poor sleep, processed foods, antibiotic use and underlying digestive conditions.
Identifying potential imbalances through appropriate testing can help inform a personalised nutrition and treatment plan.
Who Is Gut Testing For?Gut testing may be appropriate if you have ongoing digestive symptoms, unexplained health concerns, or have not seen improvement despite dietary and lifestyle changes. It is commonly recommended for people who:
Gut testing is available as part of a consultation package at the London Clinic of Nutrition. Our practitioners will recommend the most appropriate tests based on your symptoms, health history, and goals. |  |
 | How do you assess your gut health?The health of the gut is determined by a delicate balance of gut bacteria, virus and fungi that creates the microbiome. As this balance becomes disrupted (dysbiosis), ‘bad’ bacteria (and other pathogens) start to proliferate. They ferment on the foods we eat, creating toxic substances; damaging the gut lining; and making the environment conducive to parasitic growth. With the appropriate gut health tests we can understand exactly what types of bacteria have overgrown, where it has overgrown and how much damage it has caused. This knowledge enables us to select the most appropriate foods, probiotics, herbs, food supplements to treat the dysbiosis, bringing the gut back to a state of health. |
Small Intestinal Bacterial Overgrowth (SIBO) Breath Testing
SIBO a condition in which the bacteria normally present in the gut, start to proliferate in the small intestine. As they feed off carbohydrates from food, they create fermentation gases such as methane and hydrogen – causing a large array of gut-related health problems.
The SIBO test an easy, non-invasive test that measures gases: hydrogen (H2) and methane (CH4). The breath test usually uses glucose and/or lactulose as substrates to diagnose SIBO. For best results, we often recommend testing for both of these gases.
Gut Testing Clinic in LondonThe London Clinic of Nutrition provides specialist gut testing services to clients across London and throughout the UK. Our work includes comprehensive stool testing, SIBO breath testing, and functional assessments designed to identify the underlying causes of digestive symptoms. We see the majority of our patients through online consultations, which means we are able to support clients from across the UK. Testing arrangements can be coordinated remotely through our practitioners at a time that suits you. Whether you are experiencing long-standing digestive symptoms, IBS, bloating, food sensitivities, or a more recent gut complaint, our team works with you to identify the root cause and develop a personalised plan based on your test results and health goals. If you would like to find out whether gut testing is the right next step for you, book a complimentary discovery call with our team. |  |
Frequently Asked Questions
Answers to the questions we hear most often from patients considering gut testing.
QDoes the test cover my whole digestive system?
A comprehensive stool test, provides a wide range of markers that give us a great insight into your overall gastrointestinal health. We will look at markers relating to gut integrity, immunity, enzyme function and beneficial and pathogenic microbes. A SIBO test on the other hand provides insight into one area in the digestive system – your small intestine.
Here at the London Clinic of Nutrition, all of our practitioners work under the functional medicine model. This framework allows us to determine the root cause of the illness. For best results, we will consider how your genetics, environment and lifestyle interact as a whole system to diagnose and treat based on patterns of dysfunction and imbalance.
Based on scientific evidence, we now know that species of bacteria within the microbiome are not simply ‘good’ or ‘bad’. Rather, how microbes participate in health or illness is dependent on their abundance in the overall ecosystem and how they relate to one another. A perfectly healthy-looking microbiome might be doing things that aren’t healthy for an individual. One person’s healthy microbiome might not be healthy in another context. So, when investigating a person’s gut microbiome, it’s all about putting test results into context; looking for patterns and evaluating how a particular ecosystem relates to the health of the host (our patients). This type of approach is the most effective way to treat and heal the gut holistically.
QIs a stool sample part of a gut health test?
It depends on the type of test your practitioner feels is appropriate and necessary for your particular situation. Due to the complex pathophysiology of gut conditions, the testing method and treatment plan will be different for everyone. Therefore, it is important to approach it with a holistic, in-depth and comprehensive support. We would always advise that you consult one of our practitioners at our clinic. Get in touch for a complimentary discovery call to discuss your health concerns and how to match you with the most suitable practitioners.
QCan I get a gut health test on the NHS?
Comprehensive gut test isn’t currently available on the NHS. Mainly because in the primary health care it isn’t generally accepted that gut health influences the development of chronic diseases.
If your doctor suspects a particular gut condition or infection, they may refer you for a specific stool test to investigate for blood, parasites and other microbes. Some hospitals may do breath tests but for most patients, that’s the full extent of the gut tests available. In fact, according to the current NICE guidelines, testing gut health isn’t necessary for the diagnosis of IBS.
Therefore, a private stool test is the only option for a comprehensive gut health assessment.
QExperts in gut health
The London Clinic of Nutrition is the first clinic of its kind in the UK, offering a full holistic experience. We pride ourselves as the biggest functional medicine practice in Europe. We combine industry-leading nutrition and functional medicine expertise, alongside the latest testing, so we can attend to all your health needs. We specialise in Lyme disease, autoimmune disease, gut health, hormone health and unexplained illness. To understand what to expect when you attend the clinic and how successful our approach is, please have a read of our Google reviews and testimonials.