Is There a Test for Gut Health? What Each Check Shows

In short: No single test measures gut health. Doctors choose stool, breath, blood or endoscopy checks to answer a specific question, such as whether there is inflammation, infection or poor sugar absorption. Home microbiome kits show which microbes were in one sample, but experts say the evidence does not yet support routine use. Warning signs need a doctor quickly.

Is there a test for gut health?

No, there is no single gut health test. "Gut health" is not one measurement. It covers digestion, absorption, the lining of the bowel, inflammation, infection and the microbes that live there. Each test looks at one of these.

So the useful question is not "how healthy is my gut?" but "what is causing this symptom?". Your symptoms and history decide which check comes first. Guidelines for irritable bowel syndrome (IBS), a common long-term pattern of tummy pain and changed bowel habit, support reaching a diagnosis from symptoms with a few targeted tests, rather than testing for everything.

What do stool tests look at?

Stool tests look for signs of inflammation, infection or bleeding in the gut.

• Faecal calprotectin. This protein is released by inflammatory cells in the bowel. A review of adult studies found that a level of 40 micrograms per gram or below meant a probability of 1% or less of inflammatory bowel disease in people with IBS symptoms. This study estimate cannot override warning signs. It did not reliably separate IBS from good health.

• Stool antigen test. This checks for Helicobacter pylori, a stomach bacterium.

• Routine stool examination. This looks for parasites and other signs of infection. A stool culture may be added if an infection is suspected.

• Occult blood test. This looks for hidden blood.

What do breath tests look at?

Breath tests measure gases made in the gut after you swallow a test substance.

• Urea breath test. This checks for Helicobacter pylori. A Cochrane review found high accuracy in adults who had not recently taken antibiotics or acid-reducing proton pump inhibitors, so tell the test centre about these medicines.

• Hydrogen and methane breath tests. These check for incomplete absorption of lactose or fructose, and for bacterial overgrowth in the small bowel. A North American consensus calls them useful for these questions and for assessing bloating and gas.

What do blood tests look at?

Blood tests can identify anaemia, inflammation or nutrient deficiencies, but these findings do not necessarily originate in the gut. They can also point to specific conditions.

• Coeliac antibodies. Tissue transglutaminase antibodies are the first check for coeliac disease, an immune reaction to gluten. Keep eating gluten until testing is finished.

• Blood count. This can reveal anaemia, which may reflect bleeding or poor absorption.

• Inflammation markers. C-reactive protein is a general marker of inflammation in the body.

• Nutrient levels. Iron and vitamin B12 tests can identify deficiencies; further assessment determines whether poor absorption, diet or another cause is responsible.

What does an endoscopy show?

An endoscopy lets a doctor see inside the gut with a thin camera and take small tissue samples. It is the most direct look available.

An upper endoscopy examines the food pipe, stomach and first part of the small bowel. It can confirm Helicobacter pylori by biopsy and supports the diagnosis of coeliac disease. A colonoscopy examines the large bowel. The Indian consensus on IBS says that those aged 50 or above may undergo colonoscopy, particularly with warning signs. These tests are chosen for specific reasons, not as a routine gut check.

What can a microbiome test tell you?

A microbiome test can tell you which microbes were found in one stool sample, and in what proportions. A microbiome profile alone cannot reliably diagnose the cause of symptoms or determine which treatment you need. These kits read genetic material from the sample. The result is a snapshot that can shift with diet and medicines.

In 2025, an international panel of experts published a consensus on microbiome testing in The Lancet Gastroenterology and Hepatology. It made these points:

• There is not enough evidence to recommend routine microbiome testing in clinical practice.

• Direct-to-consumer tests have no agreed regulation and no proven clinical value.

• There is no common definition of "dysbiosis", the term for an unhealthy microbe balance, and not enough evidence to report a dysbiosis index.

• Reporting the popular Firmicutes-to-Bacteroidetes ratio is discouraged.

• Tests should be requested by a doctor or licensed health professional, and any change in care should be made by that professional.

So what should you do with a kit result? Treat it as a set of observations, not a diagnosis. Take it to your doctor, and do not stop medicines, start strict diets or buy a list of supplements because of it. The same panel advises against stopping treatment or changing your diet before testing unless your doctor asks.

Which gut symptoms need a doctor quickly?

Some symptoms should be checked by a doctor promptly, not with a home kit. The Indian consensus on IBS lists these warning signs:

• blood in the stool

• unintended weight loss

• anaemia

• fever

• symptoms that wake you at night

• a lump in the abdomen

• symptoms that begin after the age of 45

• a family history of colorectal cancer

The consensus says these signs call for thorough investigation to rule out disease. Many people with warning signs turn out not to have serious disease, but checking is how you find out.

Seek emergency care immediately for sudden severe abdominal pain, vomiting blood, or black, tarry stools.

How does a SOMA doctor read gut symptoms?

Doctors at SOMA read gut symptoms together with your history and the testing listed on the How We Do It page. Bring any earlier reports, plus a list of your medicines and supplements.

The listed testing includes wide blood panels, autoimmune markers, and food sensitivity and allergy testing, which looks at immune responses to specific foods. The doctor reads these across systems, because hormones, immunity and metabolism can connect with gut symptoms. Which tests you need depends on your history, and you are told plainly which ones make sense and which do not. This guide explains tests generally, so not every test here is offered at SOMA; ask the centre. This is one part of a plan built around you.

SOMA centres in Mumbai and New Delhi

SOMA doctors see patients at two centres:

• Mumbai: A-507, Kohinoor Square, N.C. Kelkar Marg, Shivaji Park, Dadar West, Mumbai 400028. Phone +91 98671 94033.

• New Delhi: E-354, Greater Kailash II, New Delhi 110048, serving Delhi NCR and Gurugram. Phone +91 87969 92001. More about the New Delhi centre.

The New Delhi centre is independently operated under licence from SOMA Longevity Sciences, and its own doctors lead care there. Both centres follow the same SOMA assessment and diagnostic standards. Online consultations are also available. Contact either centre.

Questions people ask

Is there a test for gut health?

No single test measures gut health. Doctors use stool, breath, blood and endoscopy checks to answer specific questions, such as whether there is inflammation, infection, poor absorption or coeliac disease.

What is the name of the test for gut health?

There is no one name. Common checks include faecal calprotectin for inflammation, the urea breath test for Helicobacter pylori, hydrogen breath tests for sugar absorption, coeliac antibody blood tests, and endoscopy.

Are gut microbiome test kits worth it?

An international expert consensus in 2025 found not enough evidence to recommend routine microbiome testing in clinical practice. Direct-to-consumer kits show which microbes were in a sample, but they have no proven clinical value yet.

Can a gut bacteria test find the cause of bloating?

A microbiome report alone usually cannot. Bloating has several causes, and a hydrogen breath test can check sugar absorption and bacterial overgrowth in the small bowel. A doctor starts with your history and diet.

Where can I get a gut health check in Mumbai or Delhi?

Start with a doctor who can decide which question needs answering. Doctors at SOMA's centres in Dadar West, Mumbai and Greater Kailash II, New Delhi read gut symptoms with your history and SOMA's listed testing.

Related guides

• Brain fog explained

• Are you ageing faster than you should be?

• Glutathione IV drip: what it does in the body and who it suits

Sources

1. Porcari S, Mullish BH, Asnicar F, et al. International consensus statement on microbiome testing in clinical practice. Lancet Gastroenterology and Hepatology 2025;10(2):154–167. https://pubmed.ncbi.nlm.nih.gov/39647502/

2. Ghoshal UC, Sachdeva S, Pratap N, et al. Indian consensus statements on irritable bowel syndrome in adults: a guideline by the Indian Neurogastroenterology and Motility Association and jointly supported by the Indian Society of Gastroenterology. Indian Journal of Gastroenterology 2023;42(2):249–273. https://pubmed.ncbi.nlm.nih.gov/36961659/

3. Lacy BE, Pimentel M, Brenner DM, et al. ACG clinical guideline: management of irritable bowel syndrome. American Journal of Gastroenterology 2021;116(1):17–44. https://pubmed.ncbi.nlm.nih.gov/33315591/

4. Menees SB, Powell C, Kurlander J, et al. A meta-analysis of the utility of C-reactive protein, erythrocyte sedimentation rate, fecal calprotectin, and fecal lactoferrin to exclude inflammatory bowel disease in adults with IBS. American Journal of Gastroenterology 2015;110(3):444–454. https://pubmed.ncbi.nlm.nih.gov/25732419/

5. Best LMJ, Takwoingi Y, Siddique S, et al. Non-invasive diagnostic tests for Helicobacter pylori infection. Cochrane Database of Systematic Reviews 2018;3:CD012080. https://pubmed.ncbi.nlm.nih.gov/29543326/

6. Rezaie A, Buresi M, Lembo A, et al. Hydrogen and methane-based breath testing in gastrointestinal disorders: the North American consensus. American Journal of Gastroenterology 2017;112(5):775–784. https://pubmed.ncbi.nlm.nih.gov/28323273/

7. Rubio-Tapia A, Hill ID, Semrad C, et al. American College of Gastroenterology guidelines update: diagnosis and management of celiac disease. American Journal of Gastroenterology 2023;118(1):59–76. https://pubmed.ncbi.nlm.nih.gov/36602836/

8. Al-Toma A, Volta U, Auricchio R, et al. European Society for the Study of Coeliac Disease (ESsCD) guideline for coeliac disease and other gluten-related disorders. United European Gastroenterology Journal 2019;7(5):583–613. https://pubmed.ncbi.nlm.nih.gov/31210940/