The Ultimate Guide to Testing Your Gut Health for Chronic Symptoms

Feeling unwell for a long time without knowing why is incredibly frustrating. You might have tried changing your diet, taking new vitamins, or getting more sleep, but the tiredness, stomach pain, or skin breakouts just will not go away. Often, the hidden cause of these problems lives right inside your stomach and intestines.

A gut health test looks at all bacteria in your unique gut microbiome to find the hidden causes of long-lasting issues like bloating, tiredness and skin problems.

• Why should I test my gut if I feel unwell? Testing helps you find out if a lack of good bacteria or too many bad bacteria is causing your chronic symptoms.

• How does a gut test actually work? You provide a small stool sample at home, and a laboratory looks at the DNA of your microbes to see exactly what is living inside you.

• What makes a test reliable and useful? The best tests look at all the DNA in your sample to give you a complete picture, and they offer expert advice on what foods to eat to support your microbes and potentially help with your problems.

Persistent symptoms indicating the need for a gut microbiome test include chronic bloating, irritable bowel syndrome (IBS), unexplained fatigue, skin conditions like eczema, and stubborn weight fluctuations. If you have tried basic lifestyle changes and still feel unwell, your digestive system might be out of balance.

This imbalance is called gut dysbiosis. It happens when the bad microbes in your stomach outnumber the good ones. When this occurs, your body sends out warning signs. Here are the main symptoms that suggest you need to look closer at your digestive health:

• Digestive Discomfort: If you experience constant gas, stomach pain, or unpredictable toilet habits, your microbes might be struggling to break down your food. You can read more about this in our guide on Gut Testing for IBS, Bloating, and Digestive Discomfort. Up to 20% of people in the UK suffer from IBS symptoms [1].

• Skin Problems: Your skin and your stomach are closely linked. Too much inflammation in your digestive tract can show up on your face as acne, rosacea, or eczema. Bacteria like Staphylococcus aureus can trigger these skin reactions. Learn how this works in our article about The Gut-Skin Axis: Testing for Eczema, Acne, and Rosacea.

• Low Energy and Brain Fog: Your stomach makes chemicals that talk directly to your brain. If you lack good bacteria, you might feel constantly tired, anxious, or unable to focus. Discover more in our guide on The Gut-Brain Connection: Brain Fog, Anxiety, and Fatigue.

A stool test for gut health identifies root causes by analysing microbial DNA to detect pathogenic overgrowth, beneficial bacteria depletion, and overall dysbiosis in the digestive tract. It removes the guesswork by showing you which metabolic pathways associated with these bacteria may be affected and how nutrition may help support them.

When you send a sample to a laboratory, scientists extract the DNA. This tells them who is living in your stomach and what jobs they are doing.

For example, a test might show that you have very low levels of Akkermansia. This is a very important type of good bacteria that protects the lining of your stomach. If it is missing, you might experience more inflammation. A test might also find too much of a yeast called Candida albicans, which can cause sugar cravings and tiredness.

By looking at this information, you can stop guessing about your health. You can find out exactly what you can learn from a gut microbiome test to help you build a plan to feel better.

The best gut health test in the UK for identifying dysbiosis uses Shotgun Metagenomic Sequencing to provide strain-level detection of bacteria, viruses and fungi, paired with expert nutritional guidance. This advanced technology ensures you get the most accurate and useful results possible.

Many cheap tests on the market use older technology. They only look for broad families of bacteria and miss the fine details. You can see a full comparison in our article about Shotgun Metagenomic Sequencing vs 16s rRNA Testing.

The Vivere Gut Microbiome Test Kit uses the most advanced sequencing available. It does not just hand you a confusing list of bacteria. It gives you a clear dashboard and a report showing your unique scores. It also includes a one-to-one call with a nutritionist. They will help you understand your results and give you a personalised list of foods to eat to fix your specific symptoms.

It is very simple. You order a kit online, and it arrives at your house. You use a small swab to collect a tiny piece of stool from the toilet paper. You put the swab in a sample tube, seal it, and post it back to the laboratory in a prepaid envelope.

Not at all. The test is completely non-invasive. There are no needles and no pain. You collect the sample in the comfort and privacy of your own bathroom.

A test cannot cure you on its own. It is an information tool. However, the results tell you exactly which foods and supplements your body needs. By following your personalised nutrition plan, you can support your digestive system and relieve your symptoms over time.

"When you are dealing with chronic symptoms like bloating, fatigue, or skin issues, guessing is no longer an option. A comprehensive gut microbiome test allows us to look past the surface. By identifying these specific imbalances, we can use targeted, personalised nutrition to help rebuild your gut lining, quiet systemic inflammation, and finally get to the root cause of how you are feeling."

[1] Irritable bowel syndrome (IBS). Frimley Health NHS Foundation Trust. Published in 2025.