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ClinicalTrials.gov public records Last synced Oct 21, 2026, 2:34 PM EDT

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Showing 49–72 of 913 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Stool Clear all
Completed Not applicable Interventional

Magnamosis First-in-human Study of Feasibility and Safety

NCT02043392
View directory record Official record
Conditions
Intestinal Anastomosis Complication
Interventions
Magnamosis
Device
Lead sponsor
Michael Harrison
Other
Eligibility
18 Years to 60 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 15, 2023 · Synced Oct 21, 2026, 2:34 PM EDT
Completed No phase listed Observational

A Study of Immune Responses to the Virus That Causes COVID-19

NCT04431414
View directory record Official record
Conditions
SARS-CoV-2, COVID-19
Interventions
Sample collection
Other
Lead sponsor
COVID-19 Prevention Network
Network
Eligibility
18 Years and older
Enrollment
953 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
15
States / cities
Birmingham, Alabama • San Francisco, California • Miami, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2022 · Synced Oct 21, 2026, 2:34 PM EDT
Completed No phase listed Observational

KidneyCare Cohort Study (KCC-S)

NCT06898632
View directory record Official record
Conditions
Kidney Cancer
Interventions
Not listed
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Oct 21, 2026, 2:34 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Colorectal Cancer Awareness, Research and Education and Screening - Rural Expansion, Access and Capacity for Health

NCT04464668
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Provider Tools, Provider surveys
Behavioral
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced Oct 21, 2026, 2:34 PM EDT
Recruiting No phase listed Observational

C. Difficile Toxin Levels in Stool From Healthy Individuals Following Standard of Care Antibiotic Treatment for CDI.

NCT07250724
View directory record Official record
Conditions
Clostridioides Difficile Infection Recurrence
Interventions
Participants that are undergoing standard of care antibiotic treatment for their second C. Diff infection will be followed for 8 weeks after completing antibiotic treatment.
Other
Lead sponsor
Bactolife A/S
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
4
States / cities
Atlanta, Georgia • Royal Oak, Michigan • Rochester, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Oct 21, 2026, 2:34 PM EDT
Completed Phase 2 Interventional Results available

The Effects of Patiromer on Serum Potassium Level and Gut Microbiome of ESRD Patients With Hyperkalemia

NCT03326583
View directory record Official record
Conditions
ESRD, Hyperkalemia, End Stage Renal Disease
Interventions
Patiromer
Drug
Lead sponsor
Dominic Raj
Other
Eligibility
18 Years to 85 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 9, 2023 · Synced Oct 21, 2026, 2:34 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 21, 2026, 2:34 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

BÜHLMANN fCAL™ ELISA - Aid in Differentiation of IBD From IBS

NCT02351635
View directory record Official record
Conditions
Inflammatory Bowel Disease, Irritable Bowel Syndrome
Interventions
fecal calprotectin level
Other
Lead sponsor
Bühlmann Laboratories AG
Industry
Eligibility
22 Years and older
Enrollment
478 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
7
States / cities
Palo Alto, California • Miami, Florida • Macon, Georgia + 4 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2019 · Synced Oct 21, 2026, 2:34 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Epidemiology and Pathophysiology of Post-Infectious Functional GI Disorders

NCT03266068
View directory record Official record
Conditions
Campylobacter Infections, Irritable Bowel Syndrome
Interventions
DNA Analysis of Blood Sample, Flexible sigmoidoscopy with colonic biopsies, Small bowel and colonic gastrointestinal permeability, Stool sample analysis
Genetic · Procedure · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Oct 21, 2026, 2:34 PM EDT
Enrolling by invitation No phase listed Observational

PillSense Use in Anemia and Hemoccult

NCT06951490
View directory record Official record
Conditions
Occult Gastrointestinal Bleeding, Upper Gastrointestinal Bleeding (UGIB)
Interventions
PillSense™
Device
Lead sponsor
AdventHealth
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Oct 21, 2026, 2:34 PM EDT
Completed No phase listed Observational

Vitamin A, Stool Microbiota and Vaccine Response in Bangladeshi Infants

NCT02027610
View directory record Official record
Conditions
Vitamin A Deficiency
Interventions
Not listed
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
12 Months to 24 Months
Enrollment
258 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
2
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Nov 18, 2015 · Synced Oct 21, 2026, 2:34 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pediatric Obesity Observational Prospective Trial

NCT03139877
View directory record Official record
Conditions
Pediatric Obesity
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
10 Years to 18 Years
Enrollment
295 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 18, 2021 · Synced Oct 21, 2026, 2:34 PM EDT
Completed No phase listed Observational

Identify Predictors That Distinguish Between Tofacitinib Responders and Non-responders Based on Genotype and Cellular and Molecular Profiles From Pinch Biopsies, Blood and Stool Samples

NCT03663400
View directory record Official record
Conditions
Ulcerative Colitis
Interventions
GWAS analysis by Illumina BeadChip
Diagnostic Test
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 70 Years
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 12, 2022 · Synced Oct 21, 2026, 2:34 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Evaluation of Stool Tagging for Improved Patient Compliance

NCT00124163
View directory record Official record
Conditions
Colon Cancer, Polyps
Interventions
Imaging procedure of CT colonography
Procedure
Lead sponsor
Center for Diagnostic Imaging
Other
Eligibility
45 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2005
U.S. locations
1
States / cities
Chesterfield, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 2, 2006 · Synced Oct 21, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Resistant Starch Blend Gastrointestinal Impact

NCT03983772
View directory record Official record
Conditions
Quality of Life, Health, Subjective
Interventions
RS blend, Placebo
Dietary Supplement · Other
Lead sponsor
Metagenics, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Gig Harbor, Washington
Source: ClinicalTrials.gov public record
Updated Apr 6, 2022 · Synced Oct 21, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Fiber Blends and Gut Microbiota (FB)

NCT04101344
View directory record Official record
Conditions
Gut Microbiome
Interventions
Two fiber-blend snack and four fiber-blend snack
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 60 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 27, 2024 · Synced Oct 21, 2026, 2:34 PM EDT
Withdrawn No phase listed Observational

Diet, Physical Activity and Body Composition Changes During R-CHOP

NCT04293900
View directory record Official record
Conditions
Non-Hodgkin Lymphoma, DLBCL, Diffuse Large B Cell Lymphoma
Interventions
24-hour dietary recall, Hand grip strength, International Physical Activity Questionnaire, Patient-reported outcomes survey, Pittsburgh Sleep Quality Index, Functional Assessment of Cancer Treatment - Lymphoma, urine sample (optional), fecal sample (optional)
Other
Lead sponsor
George Washington University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Oct 6, 2020 · Synced Oct 21, 2026, 2:34 PM EDT
Suspended Phase 1 Interventional

Nivolumab and Ipilimumab With and Without Camu Camu for the Treatment of Patients With Metastatic Renal Cell Carcinoma

NCT06049576
View directory record Official record
Conditions
Clear Cell Renal Cell Carcinoma, Sarcomatoid Renal Cell Carcinoma, Stage III Renal Cell Cancer AJCC v8, Stage IV Renal Cell Cancer AJCC v8
Interventions
Biospecimen Collection, Bone Scan, Computed Tomography, Ipilimumab, Magnetic Resonance Imaging, Myrciaria dubia Prebiotic Supplement, Nivolumab
Procedure · Biological · Drug
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Oct 8, 2026 · Synced Oct 21, 2026, 2:34 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Study of Using Computerized Education to Increase Patients' Confidence in Their Ability to Be Screened for Colon Cancer

NCT00273585
View directory record Official record
Conditions
Colorectal Cancer Screening
Interventions
Personally-tailored educational software program
Device
Lead sponsor
University of California, Davis
Other
Eligibility
50 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Sep 8, 2006 · Synced Oct 21, 2026, 2:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Interactions of Human Gut Microbiota With Intestinal Sweet Taste Receptors

NCT03032640
View directory record Official record
Conditions
Obesity
Interventions
Oral Glucose Tolerance Test (OGTT), Assessment of dietary compliance, Stool sampling, Sodium Saccharin, Placebo, Lactisole
Other
Lead sponsor
AdventHealth Translational Research Institute
Other
Eligibility
18 Years to 45 Years
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Oct 21, 2026, 2:34 PM EDT
Terminated Phase 2 Interventional Results available

Prevention of Recurrence of Crohn's Disease by Fecal Microbiota Therapy (FMT)

NCT02417974
View directory record Official record
Conditions
Crohn's Disease
Interventions
Fecal Microbiota Transplant (FMT)
Biological
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 24, 2022 · Synced Oct 21, 2026, 2:34 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Transdermal Administration by a Novel Wireless Iontophoresis Device

NCT06351852
View directory record Official record
Conditions
Spinal Cord Injuries, Constipation, Fecal Incontinence, Neurogenic Bowel
Interventions
Combination of Neostigmine and Glycopyrrolate, I-Box by Dynatronics
Drug · Device
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 89 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Oct 21, 2026, 2:34 PM EDT
Completed Phase 1Phase 2 Interventional

Improving Fecal Occult Blood Test Completion Rates Among Veterans

NCT01516489
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Stage 1, Stage 2
Behavioral
Lead sponsor
Corporal Michael J. Crescenz VA Medical Center
Federal
Eligibility
Male only
Enrollment
1,549 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 26, 2015 · Synced Oct 21, 2026, 2:34 PM EDT
Completed Phase 3 Interventional Results available

Urea Breath Test (UBT) With Breath Hp System /BreathID Hp Lab System Pediatrics

NCT02905825
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
BreathID® Hp System, BreathID® Hp Lab System, Stool Test
Device · Drug · Diagnostic Test
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
3 Years to 18 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
5
States / cities
Shreveport, Louisiana • Flowood, Mississippi • Nashville, Tennessee + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Oct 21, 2026, 2:34 PM EDT