Treatment
Stool samples clinical trials
We’re tracking 65 recruiting studies that include Stool samples, each written for real people, not researchers, below.
Recruiting studies
- NCT06387017Recruiting
Can blood tests improve lung cancer screening in smokers with artery disease?
This study looks at whether certain blood tests can help find lung cancer early in people who have smoked for a long time and also have artery disease. The goal is to see if adding these tests to current screening methods can better identify those at highest risk.
MarseilleAges 45–80 - NCT06391671Recruiting
Stress and Weight in Teens: A Personalized Nutrition Study
This study looks at how stress and weight are linked in teenagers. It uses a blood test to find patterns that could lead to personalized nutrition advice. If you join, you'll help researchers understand how your body handles stress and food.
Ghent, Oost-VlaanderenAges 11–17 - NCT06279065Recruiting
Gut bacteria and giant cell arteritis study
This trial looks at how the bacteria in your gut might affect giant cell arteritis, a condition that causes inflammation in blood vessels. It aims to help doctors better understand the disease.
Bonn, North Rhine-WestphaliaAges 18 years+ - NCT07790666Recruiting
Kefir consumption study for Spanish adults
This study will test how Activia Kefir works in a real-world setting in Spain by having participants consume the product and complete questionnaires. It may help researchers understand its effects on health.
BarcelonaAges 18–90 - NCT06709209Recruiting
AI tool for grading colitis during colonoscopy
This study uses a special AI system that analyzes images from a colonoscopy to help doctors better understand how active your ulcerative colitis is and predict how it might progress. If you are scheduled for a routine colonoscopy, this AI tool may help your doctor make more precise treatment decisions.
LeuvenAges 18–75 - NCT07553234Recruiting
Gut Health and Side Effects from Breast Cancer Hormone Treatment
This study looks at how the bacteria in your digestive system may affect side effects from abemaciclib, a hormone-based breast cancer drug. By collecting stool samples, researchers hope to understand which patients might experience fewer problems and how to better manage treatment.
Chicago, IllinoisAges 18 years+ - NCT06640959Recruiting
Bowel health study for prostate cancer radiation
This study tests whether a daily drink can help reduce bowel side effects caused by radiation for prostate cancer. If you are about to start radiation for intermediate to high-risk prostate cancer, you may be able to join.
Manchester, Greater ManchesterAges 18 years+ - NCT07237984Recruiting
COCO study for colorectal cancer screening
This trial looks at substances in your body to help find colorectal cancer earlier. It is for people who are already scheduled for a colonoscopy, either because of a positive stool test or cancer symptoms.
HillerødAges 18 years+ - NCT06624865Recruiting
Gut bacteria and small-intestine neuroendocrine tumor study
This study looks at how bacteria in your gut may affect the growth of small-intestine neuroendocrine tumors. If you are having surgery to remove one of these tumors, the research team will collect samples and data to better understand the link between your gut bacteria and the tumor.
Lyon, FranceAges 18 years+ - NCT05904301Recruiting
Registry for autoimmune and autoinflammatory disease patients
This study builds a nationwide list (registry) of people with certain autoimmune or inflammation-related illnesses. It helps researchers understand these diseases better over time, which can guide future care.
YerevanAges Any age - NCT07131605Recruiting
How weight-loss surgery affects heart health and inflammation
This study looks at how weight-loss surgery affects heart health by checking markers of inflammation in the blood and how blood vessels work. It may help understand why surgery lowers heart risk for people with obesity.
Cotignola, RavennaAges 18 years+ - NCT07083804Recruiting
Testing for H. pylori using stool samples in children
This study checks if a stool test can find H. pylori bacteria in children, instead of using a stomach biopsy during an endoscopy. It may help diagnose stomach issues with less discomfort.
PoitiersAges Up to 16 years - NCT04691284Recruiting
Test how the gut microbiome changes during major cancer treatment
This study looks at your gut “microbiome” (the bacteria in your intestines) while you receive high-dose chemotherapy and a stem cell transplant, or CAR-T cell therapy. Researchers hope to understand how these treatments affect the microbiome, which may relate to how well patients do.
Bratislava, SlovakiaAges 18 years+ - NCT06973837Recruiting
Brain study on chronic back pain and insomnia
This study looks at how the brain works in people with chronic low back pain and/or chronic insomnia. It compares these groups to healthy volunteers using MRI and pain tests.
LeuvenAges 18–60 - NCT06923813Recruiting
Measuring nutrient absorption in ICU patients on tube feeding
This study checks how well patients who are still in the hospital after an ICU stay absorb the nutrients from their tube feeding. A special test called bomb calorimetry will measure the calories in stool to see if the body is getting the energy it needs.
BrusselsAges 18 years+ - NCT06722456Enrolling by invitation
Better ways to detect active IBD
This study tests non-invasive tools to find active inflammation in people with Crohn's disease or ulcerative colitis. You may need to give extra stool samples before your colonoscopy and calprotectin test.
Sherbrooke, QuebecAges 18 years+ - NCT04132206Recruiting
Studying gut bacteria patterns in systemic sclerosis over time
This study looks at changes in gut bacteria over time in people with systemic sclerosis (a connective tissue disease). It also compares them with healthy adults to understand what gut bacteria patterns may be linked to this condition.
MarseilleAges 18 years+ - NCT05303337Recruiting
Study of gut and HIV changes after switching to long-acting shots
This trial compares how HIV “reservoirs,” inflammation, and the gut microbiome change when people switch from daily HIV pills to long-acting injectable treatment. It may help you and your team understand what to expect with the switch and how your body responds.
MarseilleAges 18 years+ - NCT05078957Recruiting
Study gut microbiome in older adults with well-controlled HIV
This trial studies how the bacteria in your gut (“microbiome”) relate to frailty (weakness/low physical resilience) in people with HIV who are stably doing well on treatment. It may help researchers understand why some people become frail and how the gut may play a role.
MarseilleAges 55 years+ - NCT04899154Recruiting
Study tests gut bacteria to predict response in spine arthritis
This study looks at your gut bacteria (from a stool sample) to see whether it can predict how well you will respond to biologic medicines for spondyloarthritis. It may help doctors choose the most effective treatment for future patients.
MarseilleAges 18 years+ - NCT05588154Recruiting
Donate blood and other samples to study blood cancers
This study asks healthy adults to provide blood, bone marrow (if needed), skin, saliva, and stool samples. Scientists use these samples to compare patterns related to myeloid (bone-marrow) blood cancers, which may help future research and tests.
Bethesda, MarylandAges 18–120 - NCT05410977Recruiting
Testing blood and stool for colon cancer in Lynch syndrome
This study collects blood and stool samples to see how well they can detect colorectal cancer or advanced growths in people with Lynch syndrome (an inherited colon cancer risk) or suspected Lynch syndrome. It may help find cancer or precancer earlier, which can improve next-step decisions.
Scottsdale, ArizonaAges 18 years+ - NCT05319067Recruiting
Gut bacteria study in toddlers on long-term reflux antibiotics
This study compares gut bacteria (microbiome) in toddlers who take an antibiotic to prevent urine infections for vesicoureteral reflux, versus other similar children. It may help researchers understand how long-term antibiotic use and reflux affect gut health and future risk.
MontpellierAges 1–3 - NCT05196061Recruiting
Skin and gut sample study for healthy people
This study builds a detailed library of the microbes living on your skin and in your gut. It may help researchers better understand how these microbes relate to health and future diseases.
Cleveland, OhioAges 18 years+
Common questions
- Are there clinical trials studying Stool samples?
- Yes. Clin2 currently lists 65 recruiting studies that include Stool samples, drawn from the U.S. registry and rewritten for real people so you can see what each is testing and who it's for.
- How do I know if I qualify for a Stool samples trial?
- Each study lists its own eligibility criteria — rules about condition, age, and prior treatments. On every Clin2 trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Is Stool samples an approved treatment?
- A drug being studied in a trial may be investigational (still being tested) or already approved and being studied for a new use. Each study page explains what phase it's in. Clin2 does not provide medical advice — talk with your doctor about whether Stool samples or a specific trial is right for you.
Related treatments
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. A drug appearing here is being studied in a trial and may be investigational. Talk with your doctor about whether a specific treatment or trial is right for you.