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ClinicalTrials.gov public records Last synced Oct 22, 2026, 5:03 PM EDT

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Showing 1–19 of 19 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Permeability measurement Clear all
Recruiting Phase 1 Interventional

Gut Permeability and Microbiome in Preterm Infants

NCT07667049
View directory record Official record
Conditions
Prematurity Complications
Interventions
measurement of intestinal permeability
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
Up to 4 Days
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Oct 22, 2026, 5:03 PM EDT
Completed No phase listed Observational

Endothelium in Severe Sepsis

NCT00793442
View directory record Official record
Conditions
Sepsis, Severe Sepsis, Septic Shock
Interventions
Blood Collection and Assays
Diagnostic Test
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
910 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
7
States / cities
Birmingham, Alabama • Boston, Massachusetts • Manhasset, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 29, 2024 · Synced Oct 22, 2026, 5:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Biomarkers for Intestinal Permeability in Patients With Constipation

NCT02246647
View directory record Official record
Conditions
Intestinal Diseases, Irritable Bowel Syndrome, Constipation
Interventions
Permeability measurement, Esophagogastroduodenoscopy, Flexible sigmoidoscopy
Diagnostic Test · Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Oct 22, 2026, 5:03 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

GI Permeability Change in Response to Aquamin®

NCT04855799
View directory record Official record
Conditions
Ulcerative Colitis, Healthy, Irritable Bowel Syndrome With Diarrhea
Interventions
Aquamin
Drug
Lead sponsor
James Varani
Other
Eligibility
18 Years to 80 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 17, 2026 · Synced Oct 22, 2026, 5:03 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 22, 2026, 5:03 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

The Leaky Lung Test

NCT02306473
View directory record Official record
Conditions
Asthma, Allergy, Reactive Airway Disease, Lung Diseases, Obstructive
Interventions
Mannitol
Drug
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 4, 2018 · Synced Oct 22, 2026, 5:03 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

Cerebrovascular Reactivity Assessed With fNIRS as a Biomarker of TCVI After Acute Traumatic Brain Injury in Military

NCT04058132
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Sildenafil Citrate 50Mg Tab, functional Near-infrared Spectroscopy (fNIRS), Carbon Dioxide (CO2) 5%, Neuropsychological Assessments, Gadolinium contrast infusion, Blood sample collection for research purposes, Structural brain Magnetic Resonance Imaging (MRI
Drug · Device · Other + 1 more
Lead sponsor
Uniformed Services University of the Health Sciences
Federal
Eligibility
18 Years to 55 Years
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Oct 22, 2026, 5:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Standardizing Method and Development of Normal Values to Measure Human Small Intestinal and Colonic Permeability

NCT04262310
View directory record Official record
Conditions
Healthy
Interventions
Small Bowel and Colonic Permeability Test
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 30, 2021 · Synced Oct 22, 2026, 5:03 PM EDT
Active, not recruiting Not applicable Interventional

Xerosis and Use of Topical Moisturizer

NCT04341623
View directory record Official record
Conditions
Xerosis Due to Atopic Dermatitis
Interventions
Cetaphil Pro Eczema moisturizer, Electronic interaction, GPSkin
Other · Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 85 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 3, 2026 · Synced Oct 22, 2026, 5:03 PM EDT
Recruiting Phase 2 Interventional

Aquamin® for Prevention of Ulcerative Colitis J-Pouch-associate Intestinal Inflammation

NCT07501078
View directory record Official record
Conditions
Ulcerative Colitis, Ileal Pouch
Interventions
Aquamin, Placebo
Drug
Lead sponsor
Muhammad N Aslam, MD
Other
Eligibility
18 Years to 80 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 22, 2026, 5:03 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Performance of 13C Mannitol for in Vivo Measurement of Small Intestinal Permeability

NCT02603822
View directory record Official record
Conditions
Impaired Small Intestinal Permeability
Interventions
12C mannitol, Indomethacin, 13C mannitol, Lactulose
Dietary Supplement · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 4, 2019 · Synced Oct 22, 2026, 5:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

BRP1602: Evaluation of Technical and Logistical Feasibility to Measure Lung Permeability

NCT06105424
View directory record Official record
Conditions
Tobacco Use, Smoking, Smoking, Tobacco
Interventions
Lung Permeability Assessment
Procedure
Lead sponsor
RAI Services Company
Industry
Eligibility
30 Years to 50 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Oct 27, 2023 · Synced Oct 22, 2026, 5:03 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Feasibility Study to Assess a Trans-nasal Intestinal Potential Difference Probe

NCT04565821
View directory record Official record
Conditions
Inflammatory Disease, Permeability; Increased, Crohn Disease, Inflammatory Bowel Diseases, Environmental Enteropathy
Interventions
IPD Probe via TNIT
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 60 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 22, 2026, 5:03 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Oral Administration of MB-102 Versus Dual Sugar Testing for Gut Permeability

NCT03962998
View directory record Official record
Conditions
Crohn Disease
Interventions
Lactulose/Rhamnose solution, MB-102
Drug
Lead sponsor
MediBeacon
Industry
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 10, 2022 · Synced Oct 22, 2026, 5:03 PM EDT
Completed Phase 1 Interventional Results available

Intestinal Permeability in Preterm Infants

NCT01756040
View directory record Official record
Conditions
Prematurity, Intestinal Permeability
Interventions
Lactulose -rhamnose solution
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
Up to 4 Days
Enrollment
211 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 18, 2023 · Synced Oct 22, 2026, 5:03 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Confocal Endomicroscopy for Permeability of Esophageal Wall in Refractory Gastroesophageal Reflux Disease (GERD)

NCT03228407
View directory record Official record
Conditions
Gastro Esophageal Reflux, Barrett Esophagus, Erosive Esophagitis
Interventions
Confocal endomicroscopy, Endoscopic biopsies, Mucosal impedance (MI)
Procedure · Diagnostic Test
Lead sponsor
McGuire Research Institute
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 16, 2018 · Synced Oct 22, 2026, 5:03 PM EDT
Completed Phase 2 Interventional Results available

Rosacea and Ivermectin

NCT04275999
View directory record Official record
Conditions
Rosacea
Interventions
ivermectin, digital interaction, GPSkin
Drug · Behavioral · Device
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 22, 2026, 5:03 PM EDT
Terminated Not applicable Interventional

Ultra High Field MRI and MRS Techniques in Diagnosing Breast Cancer

NCT01938651
View directory record Official record
Conditions
Breast Cancer
Interventions
high field strength magnetic resonance imaging, magnetic resonance spectroscopic imaging, chemical exchange saturation transfer magnetic resonance imaging, diffusion-weighted magnetic resonance imaging, dynamic contrast-enhanced magnetic resonance imaging
Procedure
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 3, 2016 · Synced Oct 22, 2026, 5:03 PM EDT
Completed Not applicable Interventional Results available

Bevacizumab w / Temozolomide PET & Vascular MRI For GBM

NCT01987830
View directory record Official record
Conditions
Recurrent Glioblastoma
Interventions
MRI-PET, TMZ-PET
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 4, 2020 · Synced Oct 22, 2026, 5:03 PM EDT