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Showing 1–24 of 670 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: colonoscopy Clear all
Terminated Not applicable Interventional Accepts healthy volunteers

Comparision of Air Versus CO2 for Distention During Sigmoidoscopy

NCT00771290
View directory record Official record
Conditions
Colorectal Surgery
Interventions
Air insufflation with standard endoscopy unit, CO2 insufflation for colonoscopy (special CO2 insufflation unit)
Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2024 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Not applicable Interventional Results available

Safety of Endoscopic Resection of Large Colorectal Polyps: A Randomized Trial.

NCT01936948
View directory record Official record
Conditions
Colon Polyps
Interventions
Clip closure
Procedure
Lead sponsor
White River Junction Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 89 Years
Enrollment
928 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2022
U.S. locations
1
States / cities
White River Junction, Vermont
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Sep 3, 2026, 2:31 AM EDT
Withdrawn Not applicable Interventional

Prospective Study of Clostridium Difficile in Children Undergoing Colonoscopy

NCT01472978
View directory record Official record
Conditions
C. Difficile Infection
Interventions
metronidazole
Drug
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
7 Years to 21 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jul 24, 2019 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Phase 3 Interventional Results available

A Safety and Efficacy Study of a Bowel Cleansing Preparation (BLI800) in Pediatric Subjects Undergoing Colonoscopy

NCT02819323
View directory record Official record
Conditions
Colonoscopy
Interventions
PEG-ELS, BLI800
Drug
Lead sponsor
Braintree Laboratories
Industry
Eligibility
12 Years to 16 Years
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
27
States / cities
Mobile, Alabama • Tucson, Arizona • Orange, California + 23 more
Source: ClinicalTrials.gov public record
Updated May 2, 2021 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Not applicable Interventional

A Comparison of Air Insufflation, Water Immersion and Water Exchange Colonoscopy in Diagnostic Patients

NCT01781650
View directory record Official record
Conditions
Pain, Colorectal Adenomas, Colorectal Cancer
Interventions
Air Insufflation method., Water Immersion method., Water Exchange method.
Other
Lead sponsor
Presidio Ospedaliero Santa Barbara
Other
Eligibility
18 Years to 85 Years
Enrollment
288 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 14, 2014 · Synced Sep 3, 2026, 2:31 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Evaluation of the Natera Colorectal Cancer Screening Test in an Average Risk Population (FIND-CRC)

NCT07046585
View directory record Official record
Conditions
Colo-rectal Cancer
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
40 Years and older
Enrollment
25,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2033
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Dec 11, 2025 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Phase 4 Interventional Results available

MoviPrep® Versus GoLYTELY® Bowel Preparation in Hospitalized Patients Undergoing Colonoscopy

NCT05054036
View directory record Official record
Conditions
Bowel Preparation Before Colonoscopy
Interventions
MoviPrep, Golytely
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
520 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Bridgeport, Connecticut • New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Not applicable Interventional

The Impact of Diet Liberalization on Bowel Preparation for Colonoscopy

NCT01876576
View directory record Official record
Conditions
Colonic Diseases
Interventions
Clear liquids, Low residue breakfast and lunch
Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 11, 2013 · Synced Sep 3, 2026, 2:31 AM EDT
Recruiting Not applicable Interventional

Impact of Artificial Intelligence on Trainee Polyp Miss Rates

NCT06676930
View directory record Official record
Conditions
Colon Polyps, Colonoscopy, Artificial Intelligence (AI)
Interventions
Colonoscopy With Computer-Aided Detection, Colonoscopy without Computer-Aided Detection
Device · Procedure
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 5, 2024 · Synced Sep 3, 2026, 2:31 AM EDT
Terminated Not applicable Interventional

Blood and Stool Molecular Biomarkers Longitudinal Detection Study in Crohn's Disease (CD) Patients

NCT03566407
View directory record Official record
Conditions
Crohn's Disease
Interventions
Colonoscopy
Procedure
Lead sponsor
Prometheus Laboratories
Industry
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
5
States / cities
Los Angeles, California • Ventura, California • Hamden, Connecticut + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 6, 2019 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Computer Aided Detection, Tandem Colonoscopy Study

NCT04074577
View directory record Official record
Conditions
Colonic Diseases
Interventions
Standard technique First, combination technique First
Diagnostic Test
Lead sponsor
NYU Langone Health
Other
Eligibility
22 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 28, 2021 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Narrow Band Imaging Colon Polyp Study

NCT00614770
View directory record Official record
Conditions
Adenomatous Polyp, New Imaging Techniques in Colonoscopy
Interventions
standard of care colonoscopy, colonoscopy
Procedure
Lead sponsor
Kansas City Veteran Affairs Medical Center
Federal
Eligibility
18 Years and older
Enrollment
630 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
2
States / cities
Kansas City, Missouri • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 16, 2010 · Synced Sep 3, 2026, 2:31 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Reducing Rural Colon Cancer Disparities

NCT03457454
View directory record Official record
Conditions
Colon Cancer
Interventions
Primary Care Provider/Staff Participants Interview, Patient Participant Interview, Patient Participant Anonymous Survey, Colonoscopy Provider/Staff Participants Interviews
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
431 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
2
States / cities
Carbondale, Illinois • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 31, 2021 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Phase 4 Interventional

Examining the Effect of Ondansetron on Bowel Prep Success

NCT05439772
View directory record Official record
Conditions
Abdominal Pain, Inflammatory Bowel Diseases, Eosinophilic Gastroenteritis, Diarrhea, Hematochezia, Weight Loss
Interventions
Ondansetron
Drug
Lead sponsor
State University of New York - Downstate Medical Center
Other
Eligibility
2 Years to 20 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Sep 3, 2026, 2:31 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Colonoscopy Versus Fecal Immunochemical Test in Reducing Mortality From Colorectal Cancer (CONFIRM)

NCT01239082
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Colonoscopy, FIT
Procedure
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
50 Years to 75 Years
Enrollment
50,126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2028
U.S. locations
45
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Fresno, California + 42 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 3, 2026, 2:31 AM EDT
Recruiting No phase listed Observational

FITting Non-invasive Tests in Lynch Syndrome Surveillance

NCT06898996
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Fecal immunochemical test
Other
Lead sponsor
University of Chicago
Other
Eligibility
20 Years to 80 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
3
States / cities
Chicago, Illinois • Ann Arbor, Michigan • New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Efficacy and Safety of Standard Oral Colonoscopic Preparations With or Without Neostigmine Compared to Pulse-Irrigation Colonic Lavage

NCT00745095
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Neostigmine
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jul 15, 2014 · Synced Sep 3, 2026, 2:31 AM EDT
Recruiting No phase listed Observational

A Study of a Urine Test to Detect Colorectal Cancer

NCT07649057
View directory record Official record
Conditions
Colorectal Cancer, Precancerous Polyp, Rectal Bleeding, CRC
Interventions
3-metabolite biosensor
Diagnostic Test
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 3, 2026, 2:31 AM EDT
Recruiting Phase 2 Interventional

Evaluation of Gixam's Performance in a FIT Negative Population

NCT06612281
View directory record Official record
Conditions
Colorectal Adenoma, Colorectal Cancer (CRC), Colorectal Cancer (CRC) Screening
Interventions
colorectal cancer (CRC) screening, colorectal cancer screening, Colonoscopy after bowel cleansing
Device · Diagnostic Test · Procedure
Lead sponsor
Jubaan Ltd.
Industry
Eligibility
45 Years to 85 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 13, 2024 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Polyp Detection With the EndoRings™: A Randomized Tandem Colonoscopy Study

NCT01955122
View directory record Official record
Conditions
Colon Cancer
Interventions
Tandem Colonoscopy
Device
Lead sponsor
EndoAid
Industry
Eligibility
40 Years to 75 Years
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 5, 2017 · Synced Sep 3, 2026, 2:31 AM EDT
Not yet recruiting Not applicable Interventional

Improving Rates of Diagnostic Colonoscopy in Native Americans

NCT07115875
View directory record Official record
Conditions
CRC Screening, CRC (Colorectal Cancer)
Interventions
Digital Outreach, In Person consultation
Other
Lead sponsor
University of Oklahoma
Other
Eligibility
45 Years to 75 Years
Enrollment
164 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Sep 29, 2025 · Synced Sep 3, 2026, 2:31 AM EDT
Completed No phase listed Observational Results available

Comparison of Virologic and Immunologic Responses to Raltegravir and Dolutegravir in the Gastrointestinal Tract of HIV-Positive Adults

NCT02218320
View directory record Official record
Conditions
Human Immunodeficiency Virus
Interventions
Raltegravir, Dolutegravir, Colonoscopy with biopsy
Drug · Procedure
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 25, 2018 · Synced Sep 3, 2026, 2:31 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers

Comparison of Adenoma Detection Rate Among Water, Carbon Dioxide and Air Methods of Minimal Sedation Colonoscopy

NCT01782014
View directory record Official record
Conditions
Screening Colonoscopy
Interventions
colonoscopy
Procedure
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years to 80 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jan 31, 2016 · Synced Sep 3, 2026, 2:31 AM EDT
Completed Not applicable Interventional

Unsedated Colonoscopy for Colorectal Cancer Screening and Surveillance

NCT01383252
View directory record Official record
Conditions
Colon Polyp
Interventions
Water infusion in lieu of air insufflation, Air method
Procedure
Lead sponsor
VA Northern California Health Care System
Federal
Eligibility
50 Years to 75 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Mather, California
Source: ClinicalTrials.gov public record
Updated Jun 16, 2013 · Synced Sep 3, 2026, 2:31 AM EDT