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Showing 1–24 of 33 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Blood in Stool Clear all
Completed No phase listed Observational

Collection of Biological Samples From Patients With Hepatitis-Associated Aplastic Anemia

NCT00050115
View directory record Official record
Conditions
Hepatitis-Associated Aplastic Anemia
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
2 Years to 100 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 7, 2021 · Synced Jul 21, 2026, 7:02 PM 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 Jul 21, 2026, 7:02 PM 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 Jul 21, 2026, 7:02 PM EDT
Completed No phase listed Observational

Comparison of Gut Microbiota, Inflammation and Symptoms Following Allogeneic HSCT

NCT02398708
View directory record Official record
Conditions
Graft vs Host Disease, Graft Versus Host Disease, Hematopoietic Stem Cell Transplantation, Peripheral Blood Stem Cell Transplantation
Interventions
Questionnaires, Blood Sample, Stool Sample, Clinical data
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 24, 2019 · Synced Jul 21, 2026, 7:02 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Blood and Stool Sample Collection in Subjects Participating in Colorectal Cancer Screening: Act Bold

NCT03821948
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Not listed
Lead sponsor
Exact Sciences Corporation
Industry
Eligibility
40 Years and older
Enrollment
5,131 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
40
States / cities
Tempe, Arizona • Chula Vista, California • Huntington Beach, California + 36 more
Source: ClinicalTrials.gov public record
Updated Jul 20, 2020 · Synced Jul 21, 2026, 7:02 PM EDT
Completed Phase 2 Interventional

Thalidomide Reduces Arteriovenous Malformation Related Gastrointestinal Bleeding

NCT00389935
View directory record Official record
Conditions
Arteriovenous Malformation, Hereditary Hemorrhagic Telangiectasia, Hematochezia, Melena
Interventions
Thalidomide
Drug
Lead sponsor
Northport Veterans Affairs Medical Center
Federal
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
3
States / cities
Augusta, Georgia • Worcester, Massachusetts • Northport, New York
Source: ClinicalTrials.gov public record
Updated Aug 1, 2011 · Synced Jul 21, 2026, 7:02 PM EDT
Completed No phase listed Observational

Stool Collection Sub-Study of Exact Sciences Protocol 2018-01

NCT04473625
View directory record Official record
Conditions
Colorectal Cancer, Colo-rectal Cancer, Cancer
Interventions
Stool Sample Collection
Other
Lead sponsor
Exact Sciences Corporation
Industry
Eligibility
18 Years and older
Enrollment
291 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
12
States / cities
Tucson, Arizona • Hot Springs, Arkansas • Little Rock, Arkansas + 9 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2022 · Synced Jul 21, 2026, 7:02 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Blood Collection Sub-Study for CRC Screening in Individuals 45-49 at Average Risk for CRC.

NCT03741166
View directory record Official record
Conditions
Colo-rectal Cancer
Interventions
Blood Sample Collection
Other
Lead sponsor
Exact Sciences Corporation
Industry
Eligibility
45 Years to 49 Years
Enrollment
871 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
37
States / cities
Phoenix, Arizona • Camarillo, California • Laguna Hills, California + 32 more
Source: ClinicalTrials.gov public record
Updated May 16, 2021 · Synced Jul 21, 2026, 7:02 PM EDT
Completed Not applicable Interventional

Improving Rates of Colorectal Cancer Screening Among Never Screened Patients

NCT01742169
View directory record Official record
Conditions
Colorectal Neoplasms
Interventions
Outreach and Reminder Intervention
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
50 Years to 75 Years
Enrollment
420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 6, 2015 · Synced Jul 21, 2026, 7:02 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 7, 2006 · Synced Jul 21, 2026, 7:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study of In-home Tests for Colorectal Cancer

NCT01998009
View directory record Official record
Conditions
Colorectal Cancer
Interventions
fecal occult blood tests
Other
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
50 Years to 75 Years
Enrollment
1,382 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
2
States / cities
Indianapolis, Indiana • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 4, 2015 · Synced Jul 21, 2026, 7:02 PM EDT
Completed Phase 1 Interventional

Assessment of Combined Bowel Preparation for Capsule Endoscopy Study

NCT01243736
View directory record Official record
Conditions
Gastrointestinal Hemorrhage
Interventions
Combination Prep
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 19, 2016 · Synced Jul 21, 2026, 7:02 PM EDT
Terminated Not applicable Interventional

Comparison of Barium Enema, Computed Tomographic Colonography, and Colonoscopy in Detecting Colon Cancer

NCT00016029
View directory record Official record
Conditions
Colorectal Cancer
Interventions
screening questionnaire administration, barium enema injection, computed tomography, computed tomography colonography, diagnostic colonoscopy, screening colonoscopy
Other · Procedure
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
775 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2005
U.S. locations
14
States / cities
La Jolla, California • San Francisco, California • Vero Beach, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Mar 21, 2013 · Synced Jul 21, 2026, 7:02 PM EDT
Completed No phase listed Observational

Screening Tests in Detecting Colorectal Cancer

NCT00025025
View directory record Official record
Conditions
Colorectal Cancer
Interventions
sample testing
Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
65 Years to 80 Years
Enrollment
4,482 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2009
U.S. locations
65
States / cities
Tuscon, Arizona • Oakland, California • Aurora, Colorado + 38 more
Source: ClinicalTrials.gov public record
Updated Jul 3, 2016 · Synced Jul 21, 2026, 7:02 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Colonoscopy or Fecal Occult Blood Test in Screening Healthy Participants for Colorectal Cancer

NCT00102011
View directory record Official record
Conditions
Colorectal Cancer
Interventions
annual screening, fecal occult blood test, screening colonoscopy, standard follow-up care
Procedure
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
40 Years to 69 Years
Enrollment
4,952 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2026
U.S. locations
4
States / cities
Shreveport, Louisiana • Minneapolis, Minnesota • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 8, 2026 · Synced Jul 21, 2026, 7:02 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

A Prospective Study of a New Immunochemical Fecal Occult Blood Test in U.S. Veteran Patients Undergoing Colonoscopy

NCT00533975
View directory record Official record
Conditions
Colon Cancer
Interventions
Not listed
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Sep 23, 2007 · Synced Jul 21, 2026, 7:02 PM EDT
Completed Phase 2 Interventional

SAFEstart Feeding Intolerance Study Phase II

NCT00331201
View directory record Official record
Conditions
Feeding Intolerance, Abdominal Distention, Gastric Residual, Emesis and Diarrhea, Blood in Stool
Interventions
SAFEstart
Drug
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Ogden, Utah
Source: ClinicalTrials.gov public record
Updated Nov 27, 2006 · Synced Jul 21, 2026, 7:02 PM EDT
Completed Not applicable Interventional

A Study on the Effects of Soy Protein on Blood Lipids in Men and Women With Mild to Moderate Hypercholesterolemia

NCT00945737
View directory record Official record
Conditions
Hypercholesterolemia
Interventions
Soy protein; 25 grams/day, Control protein
Dietary Supplement
Lead sponsor
Solae, LLC
Industry
Eligibility
18 Years to 79 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
2
States / cities
Addison, Illinois • Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 6, 2012 · Synced Jul 21, 2026, 7:02 PM EDT
Completed No phase listed Observational

Collections of Blood and Stool Samples in Patients With Acute Hepatitis

NCT00001879
View directory record Official record
Conditions
Hepatitis
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2001
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 21, 2024 · Synced Jul 21, 2026, 7:02 PM EDT
Completed No phase listed Observational

Blood and Stool Sample Collection in Subjects With a Diagnosis of Colorectal Cancer or Colorectal Lesion: Act Fast

NCT03789162
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Not listed
Lead sponsor
Exact Sciences Corporation
Industry
Eligibility
40 Years and older
Enrollment
850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
44
States / cities
Phoenix, Arizona • Canoga Park, California • Chula Vista, California + 39 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2025 · Synced Jul 21, 2026, 7:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Treatment of Hemorrhagic Radiation Proctitis Using the Halo System

NCT01103492
View directory record Official record
Conditions
Pelvic Neoplasms
Interventions
HALO90 Ablation catheter
Device
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 4, 2015 · Synced Jul 21, 2026, 7:02 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Microbiome in Colorectal Cancer Onset and Progression

NCT05368688
View directory record Official record
Conditions
Colorectal Cancer, Tumor, CRC, GI Cancer, Gastrointestinal Cancer
Interventions
Not listed
Lead sponsor
Viome
Industry
Eligibility
50 Years to 80 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Bellevue, Washington
Source: ClinicalTrials.gov public record
Updated Dec 26, 2022 · Synced Jul 21, 2026, 7:02 PM EDT
Terminated No phase listed Observational Results available

Predictors of Tumor Response and of Radiation Therapy Side Effects in Patients With Gastrointestinal Cancers

NCT01445327
View directory record Official record
Conditions
Esophageal Cancer, Stomach Cancer, Pancreatic Cancer
Interventions
Specimen collection
Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 31, 2022 · Synced Jul 21, 2026, 7:02 PM EDT
Recruiting No phase listed Observational

Collecting Blood and Stool Samples to Detect Colorectal Cancer or Advanced Neoplasia in Lynch Syndrome Patients

NCT05410977
View directory record Official record
Conditions
Colorectal Carcinoma, Lynch Syndrome
Interventions
Biospecimen Collection, Electronic Health Record Review
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
950 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
9
States / cities
Scottsdale, Arizona • San Francisco, California • Aurora, Colorado + 5 more
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Jul 21, 2026, 7:02 PM EDT