The Ultimate Guide to Choosing the Best Gut Health Test in the UK

If you are looking to fix your stomach problems, you have probably noticed that there are dozens of different tests available online. Trying to pick the right one can feel completely overwhelming. Some kits cost very little, while others cost hundreds of pounds. You might be wondering what the actual difference is and how to avoid wasting your money. The secret is knowing exactly what technology the laboratory uses and what kind of help you get after your results arrive.

To choose the best gut health test in the UK, you must look for advanced Shotgun Metagenomic Sequencing technology and ensure the service includes a private consultation with a qualified professional to help you understand your results.

• What makes one gut test better than another? The best tests use modern DNA technology to see every single bacteria in your stomach, rather than older technology that only analyses for broad groups of bacteria.

• Is a cheap test worth buying? Cheap tests are usually a waste of money because they miss important details and leave you with an incomplete picture of your health.

• What should happen after I get my results? You should speak directly with an expert who will explain your data and build a clear, step by step food plan just for you.

The best gut health test in the UK utilises Shotgun Metagenomic Sequencing for strain level accuracy and pairs clinical grade laboratory data with personalised, one to one consultations from nutritionists to create actionable dietary plans. This combination ensures you actually get help with your stomach issues instead of just looking at confusing data.

When you are shopping around, you will see two very different types of services.

First, there are basic services. These usually send you a test kit in the post, run a quick check, and email you an automated PDF report. These reports are often full of complicated science words that leave you guessing what to do next and lack of an actionable plan.

Second, there are premium services like Vivere. A premium service understands that data is useless if you do not know what to do with it. By providing a personal consultation, an expert can look at your unique scores and tell you exactly which foods to add to your diet to support your digestive system. 

An at-home stool test for gut health works by collecting a small faecal swab into a tube, which preserves the microbial genetic material during transit to an ISO-accredited laboratory for deep sequencing. The entire process is clean, quick and done in your own bathroom.

Many people feel nervous about the idea of a stool test, but it is actually very simple. Here is the step-by-step process:

1. Order: Your kit arrives in the post in a discreet box.

2. Swab: You use a tiny cotton swab to collect a tiny sample from your toilet paper.

3. Seal: You place the swab into the special liquid tube.

4. Post: You put the tube in the prepaid envelope and drop it in a postbox.

Once it reaches our ISO-accredited laboratory, scientists extract the DNA to see exactly what is living inside your stomach.

Cheap gut bacteria tests are often not worth it because they typically rely on PCR or outdated 16S rRNA technology, which only identifies broad families of bacteria and fails to detect specific strains, viruses, fungi, or functional pathways necessary for effective planning. Buying a cheap test means you are missing the most important information.

To understand the difference, imagine looking at a blurry photograph of a forest. You can see there are trees, but you cannot tell if they are oak trees or pine trees. That is what 16S rRNA technology is like. It is cheaper to run, which is why many companies use it, but it lacks detail [1].

Now imagine walking through that same forest with a magnifying glass, able to see every leaf, insect, and mushroom. That is Shotgun Metagenomic Sequencing. It looks at a wider range of genetic material in your sample and can provide a more detailed picture of the microbes present.

If you want to read a deeper scientific explanation of these two methods, read our guide on Shotgun Metagenomic Sequencing vs 16s rRNA Testing.

You can avoid confusing these tests by remembering that a microbiome test looks at the microbes in your gut, while food intolerance tests aim to assess possible reactions to certain foods. They are designed to measure different things.

Many people buy the wrong test because they are not sure what each one is designed to show. If you want information about the balance and diversity of microbes in your gut, you need a gut microbiome test. If you want to dive deeper into this topic, we have a full breakdown in our guide ‘Gut Microbiome Tests vs. Food Intolerance Tests’.

Furthermore, a good gut health test should make your results easy to read. It should give you clear scores for things like microbial diversity and gut age. You can learn exactly what these scores mean in our article ‘Understanding Your Gut Microbiome Report’.

Because advanced Shotgun Metagenomic Sequencing reads millions of pieces of DNA, it usually takes between three and four weeks for the laboratory to process your sample and create your personal report.

No. A reputable gut test only looks at the DNA of the bacteria, viruses, and fungi living inside your stool sample. It does not test or sequence your personal human DNA.

Most advanced microbiome tests are designed for adults over the age of 18, as a child's digestive system is still growing and changing very rapidly.

“When choosing a gut health test, it is important to look beyond the marketing and consider the science behind it. Some methods, such as 16S testing, can provide useful information but may offer less detail than shotgun metagenomic sequencing. Shotgun metagenomic sequencing can give a broader view of the microbes in your sample, including bacteria, viruses, and fungi. When this information is paired with a one-to-one consultation, it can help translate complex results into a more practical and personalised nutrition plan to support digestive health.”

[1] Jovel J, Patterson J, Wang W, Hotte N, O'Keefe S, Mitchel T, Perry T, Kao D, Mason AL, Madsen KL, Wong GK. Characterization of the Gut Microbiome Using 16S or Shotgun Metagenomics. Front Microbiol. 2016 Apr 20;7:459. doi: 10.3389/fmicb.2016.00459. PMID: 27148170; PMCID: PMC4837688.