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ClinicalTrials.gov public records Last synced Oct 17, 2026, 11:03 PM EDT

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Showing 265–288 of 670 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Colonoscopy Clear all
Completed Not applicable Interventional

RCT of Mailed Brochure to Boost Adherence to Screening Colonoscopy

NCT00308568
View directory record Official record
Conditions
Colonoscopy, Mass Screening
Interventions
Mailed educational brochure
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
50 Years and older
Enrollment
628 participants
Timeline
2006
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated May 4, 2017 · Synced Oct 17, 2026, 11:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Colorectal Polyp Discrimination Using High-Definition Narrow Band Imaging

NCT01354873
View directory record Official record
Conditions
Colon Polyps
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
556 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 10, 2014 · Synced Oct 17, 2026, 11:03 PM EDT
Recruiting No phase listed Observational

Colonic Tissue Biopsy Detection of Phosphorylated Alpha-synuclein for Parkinson's Diagnosis or REM Sleep Behavior Disorder

NCT07217054
View directory record Official record
Conditions
PARKINSON DISEASE (Disorder), Parkinson, Parkinson s Disease, Parkinson Disease
Interventions
Not listed
Lead sponsor
CND Life Sciences
Other
Eligibility
40 Years to 99 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Branford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Oct 17, 2026, 11:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Experimental Device to Improve Colonoscopy

NCT00719641
View directory record Official record
Conditions
Colonoscopy, Looping, Prevent Looping, Colon Cancer Screening
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
40 Years to 80 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 24, 2020 · Synced Oct 17, 2026, 11:03 PM EDT
Recruiting Not applicable Interventional

Outcomes and Data Collection for Fecal Microbiota Transplantation for the Treatment of Recurrent Clostridium Difficile

NCT03562741
View directory record Official record
Conditions
Clostridium Difficile Infection Recurrence, Clostridium Difficile Infection
Interventions
Fecal Microbiota Transplantation
Procedure
Lead sponsor
Krunal Patel
Other
Eligibility
16 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2029
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 20, 2026 · Synced Oct 17, 2026, 11:03 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Fresh, Frozen or Lyophilized Fecal Microbiota Transplantation for Multiple Recurrent C. Difficile Associated Diarrhea

NCT02318992
View directory record Official record
Conditions
Recurrent C. Difficile Associated Diarrhea
Interventions
Fecal Microbiota
Biological
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 23, 2024 · Synced Oct 17, 2026, 11:03 PM EDT
Not listed Phase 1Phase 2 Interventional

Endoscopic Mucosal Resection (EMR) for Diagnosis of Hirschsprung's Disease

NCT00671684
View directory record Official record
Conditions
Chronic Constipation, Hirschsprung's Disease
Interventions
Endoscopic Mucosal Resection (EMR)
Procedure
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
10 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 5, 2008 · Synced Oct 17, 2026, 11:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Colonoscopy in the Prone Position for Patients With BMI Greater Than 30

NCT03337217
View directory record Official record
Conditions
Obesity
Interventions
Position during colonoscopy
Procedure
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 90 Years
Enrollment
141 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 12, 2019 · Synced Oct 17, 2026, 11:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Utility Analysis of an Endoscopy Follow-up System

NCT01172080
View directory record Official record
Conditions
Colonoscopy Adherence
Interventions
protocol of reminders regarding due colonoscopy
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
Up to 85 Years
Enrollment
830 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 19, 2018 · Synced Oct 17, 2026, 11:03 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Improving Colorectal Cancer Screening Uptake Through Education and Stool-Based Testing Outreach

NCT07781774
View directory record Official record
Conditions
Colorectal Cancer (CRC) Screening, CRC Screening, Rectal Cancer, Colon Cancer, Colorectal Cancer
Interventions
Colorectal Cancer Education Materials, Cologuard test kit, Fecal immunochemical test kit, Usual Care
Behavioral · Diagnostic Test
Lead sponsor
Washington University School of Medicine
Other
Eligibility
45 Years to 75 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Oct 17, 2026, 11:03 PM EDT
Completed Not applicable Interventional Results available

Indocyanine Green Fluorescent Molecular Imaging of the Gastrointestinal Tract

NCT01112514
View directory record Official record
Conditions
High Risk Polyposis Syndrome, Distal Colonic Lesions, Colorectal Polyps
Interventions
indocyanine green
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 24, 2014 · Synced Oct 17, 2026, 11:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Virtual Colonoscopy Using Omnipaque as a Contrast Agent

NCT04582500
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Iohexol
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Apr 4, 2025 · Synced Oct 17, 2026, 11:03 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Pilot Study of Stomach Cancer Early Detection and Prevention With Endoscopy

NCT05566899
View directory record Official record
Conditions
Gastric Cancer
Interventions
esophagogastroduodenoscopy (EGD)
Procedure
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
40 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
2
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Oct 17, 2026, 11:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Analyzing IBS to Identify Biomarkers and Microbiome Signatures

NCT02419963
View directory record Official record
Conditions
Diarrhoea Predominant Irritable Bowel Syndrome, IBS
Interventions
endoscopy for tissue biopsy, Blood Sample, Stool Sample
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 7, 2017 · Synced Oct 17, 2026, 11:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Screening TO Prevent ColoRectal Cancer (STOP CRC) Among At-Risk Chinese and Korean American Primary Care Patients

NCT03481296
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Advanced Control, Culturally-Adapted Decision Support Navigation Intervention
Behavioral
Lead sponsor
University of California, Irvine
Other
Eligibility
50 Years to 75 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Jul 3, 2023 · Synced Oct 17, 2026, 11:03 PM EDT
Completed Early Phase 1 Interventional

Use of the Napoleon to Improve Polyp Measurement in Gastroenterology Fellows

NCT04858477
View directory record Official record
Conditions
Colonic Polyp
Interventions
Visual estimation of polyp size, Napoleon measurement of polyp size
Other · Device
Lead sponsor
NYU Langone Health
Other
Eligibility
45 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
4
States / cities
Brooklyn, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 25, 2026 · Synced Oct 17, 2026, 11:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Implementing a Multilevel Intervention to Accelerate Colorectal Cancer Screening and Follow-up

NCT04514341
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Intervention Phase 1: Provider and Staff education, Intervention Phase 2: Provider and staff education + Patient reminder, Intervention Phase 3: Provider and Staff education + Patient reminder + Patient navigation
Behavioral
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
50 Years to 75 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Oak Park, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced Oct 17, 2026, 11:03 PM EDT
Completed Phase 3 Interventional

A Comparison of the Efficacy and Safety of HalfLytely Vs Visicol Prior To Colonoscopy.

NCT00164151
View directory record Official record
Conditions
Colonoscopy
Interventions
HalfLytely, Visicol
Drug
Lead sponsor
Braintree Laboratories
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Timeline
Started 2001
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Feb 7, 2013 · Synced Oct 17, 2026, 11:03 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Personalized Screening Plans to Increase Colorectal Cancer Screening in Healthy Participants

NCT00617071
View directory record Official record
Conditions
Colorectal Cancer
Interventions
medical chart review, survey administration, fecal occult blood test, screening colonoscopy
Other · Procedure
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University
Other
Eligibility
50 Years to 74 Years
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 18, 2013 · Synced Oct 17, 2026, 11:03 PM EDT
Completed Not applicable Interventional Results available

Efficacy of the Third Eye Retroscope Auxiliary Imaging System

NCT00657371
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Third Eye Retroscope Auxiliary Imaging System
Device
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
50 Years to 80 Years
Enrollment
288 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
7
States / cities
Scottsdale, Arizona • Mountain View, California • Sunnyvale, California + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2013 · Synced Oct 17, 2026, 11:03 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Implementing Virtual Reality (VR) to Reduce Sedation

NCT06349564
View directory record Official record
Conditions
Sedative During Endoscopy
Interventions
Pico 4 Enterprise headset with noise cancelling headphones
Device
Lead sponsor
NYU Langone Health
Other
Eligibility
21 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Oct 17, 2026, 11:03 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

A Prospective, Multi-center, Observational Study for Signal-C Test Evaluation

NCT06059963
View directory record Official record
Conditions
Colorectal Cancer, Advanced Adenocarcinoma
Interventions
Signal-C™
Device
Lead sponsor
Universal Diagnostics
Industry
Eligibility
45 Years to 84 Years
Enrollment
12,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Raonoke, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 10, 2025 · Synced Oct 17, 2026, 11:03 PM EDT
Withdrawn Not applicable Interventional

Comparison of High-flow Oxygen With or Without Nasal Positive Airway Pressure (PAP) During Propofol Sedation for Colonoscopy in an Ambulatory Surgical Center

NCT05754255
View directory record Official record
Conditions
Colonoscopy, Positive-Pressure Respiration
Interventions
Nasal Cannula, Nasal Positive Airway Pressure System
Device
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Oct 17, 2026, 11:03 PM EDT
Completed No phase listed Observational

Cytokines and Genes in Therapeutic Response in Crohn's Disease

NCT03266471
View directory record Official record
Conditions
Inflammatory Bowel Diseases
Interventions
Baseline blood sample, Baseline intestinal biopsies, Crohn's disease activity index (CDAI), Post treatment blood sample, Post treatment intestinal biopsies, Baseline stool sample, Post treatment stool sample
Diagnostic Test · Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
2
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 14, 2023 · Synced Oct 17, 2026, 11:03 PM EDT