The Firmicutes/Bacteroidetes (F/B) ratio
The balance of two main gut bacteria families.
Why it matters
Gives insight into the overall make-up of your gut.
Our microbiome test delivers a detailed examination of your gut's microbial community using advanced shotgun sequencing technology. The analysis measures over 30 critical biomarkers—including bacterial strains, viral populations, fungal species, and archaeal organisms—that collectively influence digestive wellness and systemic health. Each microbial domain contributes specific functions to your gut ecosystem, from nutrient processing to immune signalling. The comprehensive results reveal your microbiota's composition, diversity, and functional capacity, enabling you to understand how your unique microbial profile supports or compromises your wellbeing.
*Sample requirements: x1 Stool Sample
Sample requirements
Sample collected at home with the included kit. Free postage to return your sample to our partner lab.
The balance of two main gut bacteria families.
Gives insight into the overall make-up of your gut.
Patterns of gut bacteria linked to weight.
Adds context to weight, appetite and gut links.
Bacteria that make a key gut-friendly compound.
Higher levels are generally linked to a healthier gut lining.
Bacteria that ferment dietary fibre.
Important for getting the most out of a high-fibre diet.
Helpful 'good' gut bacteria.
Higher levels are generally linked to a more resilient gut.
Less helpful gut bacteria.
Higher levels can be a sign your gut balance is off.
Gut bacteria that make hydrogen sulphide gas.
Higher levels are linked to bloating and digestive discomfort.
Bacteria that break down oxalates from food.
Useful for people prone to kidney stones.
Viruses that live among your gut bacteria.
Part of the wider gut ecosystem read-out.
The fungi living in your gut.
An overlooked but important part of gut balance.
Archaea (a third group of microbes) in your gut.
Linked to gas production and gut comfort.
This panel reports biomarker data. It does not diagnose any condition. Your results should be reviewed alongside the advice of your GP or another qualified healthcare professional.
Choose your test, complete your details and book your appointment (either through an email sent after an order with a UK partnered clinic or on our site for our own clinic).
Visit our Chxhealth Clinic in County Durham or head to one of our 50+ partnered clinics all over the UK.
ISO accredited process through our lab partners. Your sample is analysed using independently certified methods and is double checked for accuracy.
Easy-to-read results sent from us to your inbox.
Symptoms tell you something is wrong. Tests tell you what. This panel measures the biomarkers that connect to how you actually feel — so you can act with evidence, not guesswork.
You have three options:
Reports are typically delivered within 3–5 working days of the lab receiving your sample.
Yes — we're GDPR compliant and your results are stored in encrypted, UK-based databases. You can request deletion at any time.
Every report comes with a plain-English summary and a description of each of the biomarkers which you have had tested.
Lab-validated, expert-reviewed, in your inbox in days.