Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 20, 2026, 6:09 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 49–72 of 133 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Breath Collection Clear all
Not listed No phase listed Observational Accepts healthy volunteers

Exhaled Carbon Monoxide and Red Blood Cell Turnover

NCT03288233
View directory record Official record
Conditions
Diabetes Mellitus, Healthy
Interventions
Breath carbon monoxide measurement
Diagnostic Test
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 20, 2017 · Synced Oct 20, 2026, 6:09 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study of Treprostinil to Treat Interstitial Lung Disease Pulmonary Hypertension

NCT05564637
View directory record Official record
Conditions
Pulmonary Arterial Hypertension, Interstitial Lung Disease, Healthy Adults
Interventions
Treprostinil, Right Heart Catheterization (RHC) while exercising, Optional Muscle Biopsy
Drug · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced Oct 20, 2026, 6:09 PM EDT
Terminated Phase 2 Interventional Results available

Prediction of Severity of Liver Disease by a 13C Octanoate Breath Test (OBT)

NCT01244503
View directory record Official record
Conditions
Metabolic Syndrome, Nonalcoholic Fatty Liver Disease
Interventions
Sodium Octanoate Breath Test
Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
2
States / cities
Houston, Texas • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 28, 2015 · Synced Oct 20, 2026, 6:09 PM EDT
Completed No phase listed Observational

Phase II Evaluation of Exhaled Nitric Oxide (NO)

NCT01392144
View directory record Official record
Conditions
Lung Cancer
Interventions
Nitric oxide breath test, Questionnaires
Procedure · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 4, 2013 · Synced Oct 20, 2026, 6:09 PM EDT
Withdrawn Not applicable Interventional

Brief Mindfulness and Nutrition-Based Interventions for Chronic Pain: Strategies to Ease Pain

NCT03563911
View directory record Official record
Conditions
Opioid Use, Chronic Pain
Interventions
Brief Mindfulness-Based Intervention (BMBI), Control/Nutrition Education
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 7, 2020 · Synced Oct 20, 2026, 6:09 PM 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 6, 2023 · Synced Oct 20, 2026, 6:09 PM EDT
Active, not recruiting Not applicable Interventional

Insertable Cardiac Monitor for Primary Atrial Fibrillation Detection in High-Risk Heart Failure Patients

NCT04818645
View directory record Official record
Conditions
Atrial Fibrillation, Heart Failure
Interventions
ASSERT Insertable Cardiac Monitor, Conventional Management and monitoring
Device · Other
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
477 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Oct 20, 2026, 6:09 PM EDT
Completed Phase 4 Interventional

Helicobacter Pylori Screening and Treatment in the At-risk South Florida Community-AIM 2

NCT07224048
View directory record Official record
Conditions
H. Pylori Infection, Gastric Cancer, Gastritis H Pylori
Interventions
PYTEST® 14C-Urea Capsule Breath Test (at Home), PYTEST® 14C-Urea Capsule Breath Test (Standard Retesting In-Person)
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 20, 2026, 6:09 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Breath Analysis in Early Stage Lung Cancer Using Infrared Spectroscopy

NCT04556435
View directory record Official record
Conditions
Lung Cancer, Non Small Cell Lung Cancer
Interventions
Not listed
Lead sponsor
Breathe BioMedical Inc
Industry
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Nov 18, 2023 · Synced Oct 20, 2026, 6:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Feasibility of Collecting Stress Biomarkers Among Youth Experiencing Homelessness

NCT04004520
View directory record Official record
Conditions
Stress, Physiological
Interventions
Virtual Reality with Meditation, Audio Control, Virtual reality Control
Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 24 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 13, 2022 · Synced Oct 20, 2026, 6:09 PM EDT
Completed Not applicable Interventional

Work of Breathing During Non-invasive Ventilation in Premature Neonates

NCT02788110
View directory record Official record
Conditions
Respiratory Distress Syndrome, Newborn, Bronchopulmonary Dysplasia
Interventions
Noninvasive neurally adjusted ventilatory assist (NIV NAVA), Nasal intermittent positive pressure ventilation (NIPPV)
Other
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
Up to 12 Months
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Jan 11, 2019 · Synced Oct 20, 2026, 6:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Carbon-13 (13C)-Spirulina Platensis Gastric Emptying Breath Test (GEBT)

NCT01248221
View directory record Official record
Conditions
Dyspepsia
Interventions
[13C]-Spirulina platensis and 99mTc sulfur colloid
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 18, 2013 · Synced Oct 20, 2026, 6:09 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Identifying Patterns in the Breath of Individuals With Breast Cancer

NCT06512350
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Breathe BioMedical Inc
Industry
Eligibility
40 Years to 74 Years · Female only
Enrollment
5,175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Jacksonville, Florida • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2026 · Synced Oct 20, 2026, 6:09 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Breath Analysis & Malnutrition

NCT06115148
View directory record Official record
Conditions
Malnutrition
Interventions
Feeding, Fasting
Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 95 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 21, 2026 · Synced Oct 20, 2026, 6:09 PM EDT
Terminated Phase 2 Interventional

BreathID Multi-center HCV Liver Breath Test Study

NCT00350714
View directory record Official record
Conditions
Hepatitis C
Interventions
MBT and BreathID
Other
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
4
States / cities
New York, New York • Houston, Texas • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Oct 20, 2026, 6:09 PM EDT
Completed No phase listed Observational

Prognostic Value of Rb-82 PET Myocardial Perfusion Imaging

NCT01474577
View directory record Official record
Conditions
Cardiac Health
Interventions
questionnaire
Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 9, 2018 · Synced Oct 20, 2026, 6:09 PM EDT
Completed Phase 1 Interventional

Relationship Between Gastric Emptying and Glycemic Variability in Type 1 Diabetes Mellitus

NCT02755064
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Erythromycin lactobionate, Placebo IV, [13C]-Spirulina, Erythromycin Ethylsuccinate Suspension, Placebo Suspension
Drug
Lead sponsor
Adil Bharucha
Other
Eligibility
Not listed
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 28, 2016 · Synced Oct 20, 2026, 6:09 PM EDT
Not listed Not applicable Interventional

The Effect of an Individualized Impairment-based, Orthopedic Physical Therapy Intervention (IOI), on Muscle Stiffness, Pelvic Floor Function, and Pain in Women With Chronic Pelvic Pain

NCT04851730
View directory record Official record
Conditions
Pelvic Pain, Chronic Pain, Muscle Tightness
Interventions
Orthopedic Physical Therapy Intervention, Dry Needling
Procedure · Device
Lead sponsor
Texas Woman's University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Lee's Summit, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 20, 2021 · Synced Oct 20, 2026, 6:09 PM EDT
Completed Not applicable Interventional

Study to Evaluate NA-NOSE for Monitoring and Detecting Recurrence in Early Stage Lung Cancer

NCT01840150
View directory record Official record
Conditions
Stage IA Non-small Cell Lung Cancer, Stage IB Non-small Cell Lung Cancer, Stage IIA Non-small Cell Lung Cancer, Stage IIB Non-small Cell Lung Cancer
Interventions
breath test, laboratory biomarker analysis
Procedure · Other
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 13, 2023 · Synced Oct 20, 2026, 6:09 PM EDT
Terminated No phase listed Observational

Exhaled Breath Condensate pH in Patients With Cough Caused by Gastroesophageal Reflux

NCT00451841
View directory record Official record
Conditions
Cough, Gastroesophageal Reflux
Interventions
RTube Exhaled Breath Condensate Collection System
Device
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 26, 2018 · Synced Oct 20, 2026, 6:09 PM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Hyperpolarized Xenon-129 MR Imaging of the Lung

NCT04662658
View directory record Official record
Conditions
E-Cig Use
Interventions
Hyperpolarized Xenon -129 MRI
Drug
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 10, 2020 · Synced Oct 20, 2026, 6:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

GABRA2 and the Pharmacokinetics of Risk for Alcoholism (GPRA)

NCT00681655
View directory record Official record
Conditions
Alcoholism
Interventions
Alcohol, Placebo
Other
Lead sponsor
Indiana University
Other
Eligibility
21 Years to 27 Years
Enrollment
141 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 7, 2022 · Synced Oct 20, 2026, 6:09 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Identification of Breast Cancer in Breath Samples Using Trained Detection Dogs

NCT07038785
View directory record Official record
Conditions
Breast Cancer
Interventions
Breath test
Diagnostic Test
Lead sponsor
SpotitEarly
Industry
Eligibility
18 Years and older · Female only
Enrollment
1,204 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
2
States / cities
Totowa, New Jersey • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 15, 2026 · Synced Oct 20, 2026, 6:09 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Home-Based Respiratory Muscle Training and Aerobic Exercise Programs to Improve Lung Health in Current and Former Cigarette Smokers

NCT07553819
View directory record Official record
Conditions
Lung Carcinoma
Interventions
Accelerometry, Aerobic Exercise, Biospecimen Collection, Educational Intervention, Electronic Health Record Review, Physical Performance Testing, Respiratory Muscle Training, Supportive Care, Survey Administration
Procedure · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
50 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 20, 2026, 6:09 PM EDT