Do I need to fast beforehand?

No. There is no fasting or dietary preparation. Eat normally in the days before collecting so your sample reflects your usual diet.

Will antibiotics affect my gut microbiome test results?

Yes, significantly. Antibiotics reduce microbial diversity for weeks to months afterwards. Please wait at least four weeks after finishing a course before collecting your sample.

Should I stop taking probiotics first?

Where you can do so safely, pausing probiotic supplements for one to two weeks gives a clearer picture of your baseline microbiome. Do not stop anything prescribed by a clinician without asking them first.

How long do gut microbiome test results take?

Typically 2 to 3 weeks from the laboratory receiving your sample. DNA sequencing and analysis take considerably longer than routine blood testing.

What gut symptoms should I see a doctor about instead?

Please speak to your GP promptly if you have blood in your stool, unexplained weight loss, a persistent change in bowel habit lasting more than three weeks, a lump in your abdomen, difficulty swallowing, or if you are 50 or over with new bowel symptoms. This test is not a substitute for that assessment.

Advanced Gut Microbiome DNA Test — Home Stool Test | Nuvivo Health – Nuvivo Health – Private Blood Tests

Advanced Gut Microbiome DNA Test

A whole-genome DNA sequencing analysis of your gut microbiome, covering microbial diversity, total microbial load, eleven functional capabilities, seventeen key beneficial microbes and a screen of over sixty pathogen groups. Designed for people dealing with persistent bloating, irregular bowel habits, food intolerances or ongoing digestive discomfort, this test maps the bacteria living in your gut and turns the findings into practical dietary and lifestyle guidance.

Your report includes a full taxonomy of every bacterial, viral and archaeal species detected in your sample, each compared against a healthy reference population, alongside personalised nutrition recommendations based on your individual results.

Results are typically available within 3 weeks from when your sample reaches the laboratory.

£299.00

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Crohn's Disease
Ulcerative Colitis
Obesity (Metabolic Syndrome)

Over 60 potential pathogenic groups screened
Only organisms detected in your sample are reported
Each compared against healthy population levels

Akkermansia muciniphila
Bacteroides fragilis
Bacteroides stercoris
Bacteroides thetaiotaomicron
Bacteroides uniformis
Bifidobacterium adolescentis
Bifidobacterium bifidum
Bifidobacterium breve
Bifidobacterium longum
Blautia wexlerae
Christensenella minuta
Faecalibacterium prausnitzii
Lacticaseibacillus rhamnosus
Lactobacillus acidophilus
Methanobrevibacter smithii
Roseburia intestinalis
Ruminococcus champanellensis

Oxalate Degradation
3-Indolepropionic Acid (IPA) Production
Beta-Glucuronidase Production

Methane Production
Hydrogen Sulphide (H₂S) Production
Trimethylamine (TMA) Production
Hexa-LPS Production

Butyrate Production
Propionate Production
Acetate Production
Lactate Production

Species Diversity (total species detected)
Total Microbial Load (cells per gram)

Phyla Overview
Complete Bacterial Species List
Viruses Detected
Archaea Detected

No fasting or dietary preparation required — eat as you normally would so your sample reflects your usual diet
Complete the symptom questionnaire when registering your kit; your answers are used in the report
Do not collect within 4 weeks of finishing a course of antibiotics
Pause probiotic supplements for 1–2 weeks beforehand where you can do so safely
Do not collect during an episode of diarrhoea or vomiting, or within 48 hours of bowel prep or colonoscopy
Do not collect if there is visible blood in your stool — speak to your GP first
Return your sample promptly using the prepaid packaging provided

Dietary Guidance
Fibre & Fermented Food Recommendations
Probiotic Guidance
Lifestyle Recommendations

Frequently asked questions

It is for adults experiencing persistent bloating, irregular bowel habits, food intolerances or ongoing digestive discomfort, particularly where routine blood tests have come back normal. It is also suitable for anyone wanting a detailed picture of their gut health without current symptoms.

Your sample undergoes DNA sequencing that identifies every bacterial, viral and archaeal species present. From that, your report gives you a species count, total microbial load, eleven functional scores, a screen of over sixty pathogen groups, levels for seventeen key beneficial microbes, and a full taxonomy list with normal ranges throughout.

Eleven predicted capabilities of your microbiome, each scored out of ten against a healthy population with a normal range of four to six. They cover the four main short-chain fatty acids, oxalate degradation, hydrogen sulphide, methane, IPA, hexa-LPS, TMA and beta-glucuronidase. Short-chain fatty acids are how gut bacteria convert dietary fibre into compounds that support the gut lining.

No. The laboratory states clearly that microbiome analysis is not a diagnostic test and should not be used in isolation. Your report does include similarity scores for Crohn's disease and ulcerative colitis, but these compare your microbiome to patterns seen in people with those conditions. A high score signposts you towards further investigation with a clinician. A low score does not rule a condition out.

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