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ClinicalTrials.gov public records Last synced Oct 30, 2026, 1:22 PM EDT

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Showing 73–96 of 913 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: stool Clear all
Completed No phase listed Observational Accepts healthy volunteers

OptiCal Study -Optimizing Fecal Calprotectin Monitoring: a Clinical Study Comparing CalproLab Against PhiCal and Evaluating Its Association With the Gut Microbiome

NCT03051204
View directory record Official record
Conditions
Crohn Disease, Ulcerative Colitis, Irritable Bowel Syndrome, Celiac Disease, Healthy
Interventions
Not listed
Lead sponsor
University of California, Los Angeles
Other
Eligibility
4 Years to 65 Years
Enrollment
175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 22, 2023 · Synced Oct 30, 2026, 1:22 PM EDT
Completed No phase listed Observational

Rescue FMT with Bezlotoxumab for Recurrent C. Difficile Infection

NCT06669936
View directory record Official record
Conditions
Recurrent C. Difficile Infection
Interventions
Fecal microbiota transplantation ± bezlotoxumab
Drug
Lead sponsor
Alexander Khoruts
Other
Eligibility
18 Years to 100 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 1, 2024 · Synced Oct 30, 2026, 1:22 PM EDT
Completed Not applicable Interventional Results available

A Randomized, Blinded, Multicenter Study to Evaluate NASHA/Dx for the Treatment of Fecal Incontinence

NCT00605826
View directory record Official record
Conditions
Fecal Incontinence
Interventions
NASHA/Dx (Solesta) Gel, Sham Injection
Device
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
206 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
8
States / cities
San Francisco, California • Tampa, Florida • Burlington, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2020 · Synced Oct 30, 2026, 1:22 PM EDT
Completed No phase listed Observational

Time Longitudinal Study of the Microbiome in Colorectal Cancer Subjects

NCT03951792
View directory record Official record
Conditions
Cancer Colon, Gastrointestinal Disease
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 18, 2024 · Synced Oct 30, 2026, 1:22 PM EDT
Recruiting Not applicable Interventional

Engagement of American Indians of Southwestern Tribal Nations in Cancer Genome Sequencing

NCT06207864
View directory record Official record
Conditions
Malignant Neoplasm
Interventions
Biospecimen Collection, Return of Results, Survey Administration
Procedure · Other
Lead sponsor
New Mexico Cancer Research Alliance
Other
Eligibility
18 Years and older
Enrollment
1,001 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2030
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 30, 2026, 1:22 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Food DNA Digestion

NCT06687226
View directory record Official record
Conditions
Digestion Rate
Interventions
Reconstitutable food powder
Dietary Supplement
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 7, 2026 · Synced Oct 30, 2026, 1:22 PM EDT
Active, not recruiting Not applicable Interventional

Behavioral Economic Approaches for Population-Based Colorectal Cancer Screening

NCT05693649
View directory record Official record
Conditions
Colorectal Cancer
Interventions
No Direct Patient Outreach, Direct Patient Outreach: Colonoscopy Only, Direct Patient Outreach: Sequential Choice, Visit-Based Nudge/Text, No Nudge/Text
Behavioral
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
50 Years to 72 Years
Enrollment
20,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Oct 30, 2026, 1:22 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Clinical Validation of An Optimized Multi-Target Stool DNA (Mt-sDNA 2.0) Test, for Colorectal Cancer Screening "BLUE-C"

NCT04144738
View directory record Official record
Conditions
Colorectal Cancer
Interventions
mt-sDNA 2.0 screening test, FIT test, Colonoscopy
Diagnostic Test · Procedure
Lead sponsor
Exact Sciences Corporation
Industry
Eligibility
40 Years and older
Enrollment
26,758 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
195
States / cities
Birmingham, Alabama • Cullman, Alabama • Dothan, Alabama + 161 more
Source: ClinicalTrials.gov public record
Updated Sep 1, 2023 · Synced Oct 30, 2026, 1:22 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Developmental Impacts of Microplastics Exposure in Early Life

NCT06107933
View directory record Official record
Conditions
Infant Development, Breast Feeding, Environmental Exposure
Interventions
Observational only
Other
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Oct 30, 2026, 1:22 PM EDT
Recruiting Phase 4 Interventional

Rifaximin 200 mg Plus Oral Rehydration vs Oral Rehydration Alone in Children With Acute Diarrhea

NCT07285785
View directory record Official record
Conditions
Diarrhea, Gastroenteritis, Bacterial Infection, Acute Diarrhea
Interventions
Rifaximin 200 mg Tablet, Oral Rehydration Therapy (ORT)
Drug · Other
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
6 Years to 12 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
10
States / cities
Lynwood, California • Hialeah, Florida • Miami, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 30, 2026, 1:22 PM EDT
Completed Phase 4 Interventional Results available

TOX NEG Trial: Clostridium Difficile Diagnosis and Treatment

NCT03388268
View directory record Official record
Conditions
Clostridium Difficile Infection, Diarrhea
Interventions
Oral Vancomycin, Placebo, Toxin enzyme immunoassay, Nuceleic acid amplification test
Drug · Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 26, 2021 · Synced Oct 30, 2026, 1:22 PM EDT
Completed Early Phase 1 Interventional

Oral FMT (Fecal Microbial Transplant) in Subjects With Multiple Sclerosis

NCT04096443
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Fecal microbial transplant (FMT)
Biological
Lead sponsor
Griffin Hospital
Other
Eligibility
18 Years to 55 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Derby, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 1, 2026 · Synced Oct 30, 2026, 1:22 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

A Cross-sectional Partnership to Improve Prevention and Health Equity Among African Americans

NCT05903885
View directory record Official record
Conditions
Colorectal Cancer, Prevention
Interventions
On-site Fecal Immunochemical Test (FIT) Kit Distribution, On-site With Social Media Advertising Fecal Immunochemical Test (FIT) Kit Distribution
Other
Lead sponsor
University of Nebraska
Other
Eligibility
45 Years to 75 Years
Enrollment
1,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
2
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 30, 2026, 1:22 PM EDT
Completed Phase 2 Interventional Results available

A Placebo-Controlled Study of Clonidine for Fecal Incontinence.

NCT00884832
View directory record Official record
Conditions
Fecal Incontinence
Interventions
Clonidine, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years · Female only
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 6, 2014 · Synced Oct 30, 2026, 1:22 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Coxsackie Virus in Pregnancy and Congenital Heart Disease

NCT03737006
View directory record Official record
Conditions
Congenital Heart Disease in Pregnancy
Interventions
Not listed
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
122 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 4, 2022 · Synced Oct 30, 2026, 1:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

ButyraGen™, Short Chain Fatty Acids and Gut Microbiome

NCT05601635
View directory record Official record
Conditions
Healthy
Interventions
ButyraGen™
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 25, 2023 · Synced Oct 30, 2026, 1:22 PM EDT
Enrolling by invitation No phase listed Observational

Development and Analysis of a Stool Bank for Cancer Patients

NCT04291755
View directory record Official record
Conditions
Carcinoma, Non-Small-Cell Lung, Carcinoma, Colorectal
Interventions
Pembrolizumab Injection
Drug
Lead sponsor
Persephone Biosciences
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2028
U.S. locations
2
States / cities
Fountain Valley, California • Winter Haven, Florida
Source: ClinicalTrials.gov public record
Updated Sep 18, 2026 · Synced Oct 30, 2026, 1:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Infant Feeding on Stool Characteristics

NCT00503789
View directory record Official record
Conditions
Healthy
Interventions
fecal bacteria analysis
Procedure
Lead sponsor
Mead Johnson Nutrition
Industry
Eligibility
21 Days to 30 Days
Enrollment
280 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
23
States / cities
Benton, Arkansas • Conway, Arkansas • Jonesboro, Arkansas + 20 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2008 · Synced Oct 30, 2026, 1:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Determining Lipid Content in Stool After Alpha-cyclodextrin

NCT03002168
View directory record Official record
Conditions
Healthy Participants
Interventions
Alpha-cyclodextrin, Placebo, Triolein radiolabeled with 100 microcuries of 3^Hydrogen, Tripalmitin radiolabeled with 20 microcuries of 14^Carbon
Dietary Supplement · Radiation
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 60 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 17, 2017 · Synced Oct 30, 2026, 1:22 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

An Evaluation of a Multi-target Stool DNA (Mt-sDNA) Test, Cologuard, for CRC Screening in Individuals Aged 45-49 and at Average Risk for Development of Colorectal Cancer: Act Now

NCT03728348
View directory record Official record
Conditions
Colorectal Cancer
Interventions
mt-sDNA screening test, Colonoscopy
Diagnostic Test · Procedure
Lead sponsor
Exact Sciences Corporation
Industry
Eligibility
45 Years to 49 Years
Enrollment
983 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
39
States / cities
Phoenix, Arizona • Camarillo, California • Laguna Hills, California + 35 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2021 · Synced Oct 30, 2026, 1:22 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Gut Microbiota Composition in Hispanic and Non-Hispanic Children.

NCT03990350
View directory record Official record
Conditions
Obesity
Interventions
Fecal Sample Collection, Physical Activity Questionnaire, Food Frequency Questionnaire, 24-hour dietary recall diary
Other
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
6 Years to 12 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Jun 30, 2020 · Synced Oct 30, 2026, 1:22 PM EDT
Completed Not applicable Interventional Results available

A Colonic Tube to Improve Bowel Function in Spinal Cord Injury

NCT00345397
View directory record Official record
Conditions
Constipation, Fecal Incontinence, Spinal Cord Injury
Interventions
Percutaneous endoscopic colostomy (PEC) tube
Device
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2018
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 1, 2019 · Synced Oct 30, 2026, 1:22 PM EDT
Completed No phase listed Observational

Radiation Biodosimetry in Children Undergoing Total Body Irradiation

NCT01337648
View directory record Official record
Conditions
Total-body Irradiation, Hematopoietic Stem Cell Transplant
Interventions
Not listed
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
2 Years to 21 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 22, 2016 · Synced Oct 30, 2026, 1:22 PM EDT
Not yet recruiting Early Phase 1 Interventional

Pilot Trial of Xylitol for C. Difficile De-Colonization in Patients With Inflammatory Bowel Disease

NCT06799039
View directory record Official record
Conditions
Inflammatory Bowel Disease (IBD), Clostridioides Difficile Infection
Interventions
Xylitol
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Oct 30, 2026, 1:22 PM EDT