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ClinicalTrials.gov public records Last synced Sep 13, 2026, 2:49 AM EDT

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Showing 1–24 of 192 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Stool Samples Clear all
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 6, 2026 · Synced Sep 13, 2026, 2:49 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Scavenging of Reactive Carbonyl Species by Apple Polyphenols in Human

NCT03911050
View directory record Official record
Conditions
Human Health, Polyphenols, Pharmacokinetics
Interventions
Apple consumption, Control group
Dietary Supplement
Lead sponsor
North Carolina Agriculture & Technical State University
Other
Eligibility
18 Years to 70 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Sep 13, 2026, 2:49 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Prospective Screening for Pancreatic Ductal Adenocarcinoma in High-Risk Individuals

NCT06122896
View directory record Official record
Conditions
Pancreatic Cancer, Pancreatic Ductal Adenocarcinoma, PDAC, PDAC - Pancreatic Ductal Adenocarcinoma, Pancreatic Neoplasm
Interventions
Screening Blood Tests, Endoscopic Ultrasound, Magnetic Resonance Imaging, Magnetic Resonance Cholangiopancreatography
Other · Diagnostic Test · Combination Product
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2041
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Sep 13, 2026, 2:49 AM EDT
Completed Phase 2 Interventional Results available

Antibiotic "Dysbiosis" in Preterm Infants

NCT02784821
View directory record Official record
Conditions
Enterocolitis, Necrotizing, Bacteremia, Bronchopulmonary Dysplasia, Intraventricular Hemorrhage, Periventricular Leukomalacia, Chronic Lung Disease, Ileal Perforation
Interventions
Antibiotic, Gastric fluid, Breast milk, Stool samples, Antibiotics
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
23 Weeks to 33 Weeks
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 4, 2024 · Synced Sep 13, 2026, 2:49 AM EDT
Active, not recruiting No phase listed Observational

Exploring Relevant Immune-based Biomarkers and Circulating Tumor Cells During Treatment With Immunotherapy in Genitourinary Malignancies (CTC Immune Based Biomarkers)

NCT02978118
View directory record Official record
Conditions
Carcinoma, Renal Cell, Carcinoma, Urothelial
Interventions
Immune cell and CTC detection procedures
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2028
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 13, 2026, 2:49 AM EDT
Recruiting Not applicable Interventional

Clinical and Neurobehavioral Changes With Weight Loss Drug Discontinuation and Reinitiation

NCT07387796
View directory record Official record
Conditions
Drug Discontinuation, Substance Use Disorders, Eating Behavior Changes, Tirzepatide
Interventions
Discontinuation and Reinitiation of Tirzepatide
Other
Lead sponsor
The University of Texas at Dallas
Other
Eligibility
18 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Sep 13, 2026, 2:49 AM 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 19, 2022 · Synced Sep 13, 2026, 2:49 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Acidophilus Pearls Fecal Recovery Study

NCT02001610
View directory record Official record
Conditions
Survival of Probiotics During GI Transit, GI Symptoms
Interventions
Acidophilus pearls, Hard shell gelatin capsules
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 75 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 7, 2017 · Synced Sep 13, 2026, 2:49 AM EDT
Active, not recruiting Not applicable Interventional

The Beans to Enrich the Gut Microbiome vs. Obesity's Negative Effects (BE GONE) Trial

NCT02843425
View directory record Official record
Conditions
Colorectal Cancer Prevention
Interventions
Regular Diet, Navy Beans (Canned)
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
30 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 13, 2026, 2:49 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

PyloPlus Urea Breath Test System Pediatric Safety and Efficacy Study

NCT05276557
View directory record Official record
Conditions
Helicobacter Pylori, Safety, Efficacy
Interventions
PyloPlus Urea Breath Test System, Stool Antigen Test
Combination Product · Diagnostic Test
Lead sponsor
ARJ Medical, Inc.
Industry
Eligibility
3 Years to 17 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
3
States / cities
Doral, Florida • Orlando, Florida • El Paso, Texas
Source: ClinicalTrials.gov public record
Updated May 5, 2023 · Synced Sep 13, 2026, 2:49 AM 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 3, 2021 · Synced Sep 13, 2026, 2:49 AM EDT
Recruiting No phase listed Observational

Increasing Pre-Surgical Identification of Muscle Invasive Tumor Evaluations Prior to Planned Cystectomy (INSITE)

NCT06396533
View directory record Official record
Conditions
Urothelial Carcinoma, Muscle Invasive Bladder Urothelial Carcinoma, Non-Muscle Invasive Bladder Urothelial Carcinoma
Interventions
Not listed
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
2
States / cities
Omaha, Nebraska • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Sep 13, 2026, 2:49 AM EDT
Terminated Not applicable Interventional

Medical Home Care for Hematopoietic Stem Cell Transplantation Phase 2

NCT02218151
View directory record Official record
Conditions
Blood Disorders
Interventions
Patient-Centered Medical Home (PCMH), Standard Care
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 11, 2024 · Synced Sep 13, 2026, 2:49 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Randomized Controlled Trial Investigating if Antibiotic Use in the First 48 Hours of Life Adversely Impacts the Preterm Infant Microbiome

NCT02477423
View directory record Official record
Conditions
Premature Birth of Newborn, Enterocolitis, Necrotizing
Interventions
Ampicillin, Gentamicins, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
Up to 6 Hours
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 7, 2020 · Synced Sep 13, 2026, 2:49 AM EDT
Completed No phase listed Observational

Immuno-Oncology Database and Bioregistry

NCT04656873
View directory record Official record
Conditions
Malignancy, Immune System Diseases, Autoimmune Diseases
Interventions
Biospecimen Collection, Medical Chart Review, Questionnaires/Surveys
Procedure · Other
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Sep 13, 2026, 2:49 AM 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 18, 2026 · Synced Sep 13, 2026, 2:49 AM EDT
Terminated No phase listed Observational

Monitoring of Immune and Microbial Reconstitution in (HCT) and Novel Immunotherapies

NCT03557749
View directory record Official record
Conditions
Immune and Microbial Reconstitution, Systemic Viral Infection, Acute-graft-versus-host Disease, Chronic Graft-versus-host-disease, Recurrent Malignancy, Cytokine Release Syndrome, Allogenic Related Donors, Cell Therapy/Immunotherapy Patients
Interventions
Blood Sample, Stool Sample, Urine Sample, Bronchoalveolar Lavage (BAL) fluid, Gastrointestinal biopsy x 2-4, Skin biopsy, Skin, mouth, and/or ocular swab, Apheresis Product, Final cellular product
Diagnostic Test
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
Not listed
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 20, 2023 · Synced Sep 13, 2026, 2:49 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Dysbiosis & Long COVID

NCT06825819
View directory record Official record
Conditions
COVID-19
Interventions
Subjects with and without Long COVID
Biological
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 80 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 13, 2026, 2:49 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Pathobiomes in Gut of Critically Ill Patients

NCT06822465
View directory record Official record
Conditions
Pseudomonas Aeruginosa
Interventions
P. aeruginosa using in vitro and in vivo assays
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 85 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
1
States / cities
Hyde Park, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 1, 2026 · Synced Sep 13, 2026, 2:49 AM EDT
Terminated No phase listed Observational

Volatiles in Exhaled Breath and Blood in Crohn's Disease: Validation Cohort

NCT02641171
View directory record Official record
Conditions
Crohn's Disease
Interventions
Specimen sampling
Other
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jul 11, 2018 · Synced Sep 13, 2026, 2:49 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Effects of Adding Chickpeas to the American Diet (Long Term Study)

NCT02375373
View directory record Official record
Conditions
Inflammation
Interventions
Observational Chickpea Diet
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 18, 2016 · Synced Sep 13, 2026, 2:49 AM EDT
Active, not recruiting No phase listed Observational

Microbiome and Immunosuppression: The Mission Study

NCT04953715
View directory record Official record
Conditions
Kidney Transplant Rejection, Kidney Transplant
Interventions
collection of body microbiome
Other
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2033
U.S. locations
2
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Sep 13, 2026, 2:49 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Human Microbiome in Immune-Mediated Diseases

NCT02394964
View directory record Official record
Conditions
Autoimmune
Interventions
Sample Collection
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2023
U.S. locations
2
States / cities
New Haven, Connecticut • New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 20, 2023 · Synced Sep 13, 2026, 2:49 AM EDT
Terminated No phase listed Observational

Mechanisms of Idelalisib-Associated Diarrhea in Patients With Relapsed Chronic Lymphocytic Leukemia, Indolent Non-hodgkin Lymphoma, or Small Lymphocytic Lymphoma

NCT02928510
View directory record Official record
Conditions
Absence of Signs or Symptoms, B-Cell Non-Hodgkin Lymphoma, Digestive System Signs and Symptoms, Indolent Adult Non-Hodgkin Lymphoma, Recurrent B-Cell Non-Hodgkin Lymphoma, Recurrent Chronic Lymphocytic Leukemia, Recurrent Indolent Adult Non-Hodgkin Lymphoma, Recurrent Small Lymphocytic Lymphoma
Interventions
Biospecimen Collection, Colonoscopy, Colposcopic Biopsy, Idelalisib, Laboratory Biomarker Analysis, Pharmacological Study, Physical Examination, Sigmoidoscopy
Procedure · Drug · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 13, 2021 · Synced Sep 13, 2026, 2:49 AM EDT