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 24, 2026, 8:22 PM EDT

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

Showing 1–24 of 36 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Collection of exhaled breath Clear all
Completed No phase listed Observational

Sample Collections From the Airways of Asthmatic Patients

NCT00001888
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 75 Years
Enrollment
574 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 24, 2026, 8:22 PM EDT
Terminated Not applicable Interventional Results available

Metabolic and Microbial Profiling of Lung Cancer

NCT03998189
View directory record Official record
Conditions
Nonsmall Cell Lung Cancer, Nonsmall Cell Lung Cancer Stage
Interventions
Breath Collection, Saliva Collection, Blood Collection, Urine Collection, Tumor Collection, Medical History Data Collection
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 5, 2021 · Synced Oct 24, 2026, 8:22 PM EDT
Completed No phase listed Observational

Longitudinal Evaluation of HIV-associated Lung Disease Phenotypes

NCT02238327
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, HIV, Emphysema
Interventions
blood draw, questionnaires, Lung function testing, Six-Minute walk test, Quantitative CT scans, Nasal secretion and cell collection, Echocardiogram
Procedure · Radiation
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 80 Years
Enrollment
232 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Oct 24, 2026, 8:22 PM EDT
Completed No phase listed Interventional Results available

Urease Breath Test for Rapid Characterization of Pneumonia

NCT03100760
View directory record Official record
Conditions
Pneumonia, Bacterial
Interventions
13C-urea breath test
Device
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years to 85 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Oct 24, 2026, 8:22 PM EDT
Terminated No phase listed Observational Results available

Protein Biomarker Discovery and Validation in Chronic Obstructive Pulmonary Disease (COPD) And Asthma

NCT02487394
View directory record Official record
Conditions
Asthma, COPD
Interventions
Exhaled Breath Condensate (EBC)
Procedure
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 65 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 18, 2023 · Synced Oct 24, 2026, 8:22 PM EDT
Completed Not applicable Interventional

Temporal Variation in Exhaled Volatile Organic Compounds in Esophageal Cancer Patients

NCT06453993
View directory record Official record
Conditions
Esophageal Cancer
Interventions
Exhaled VOC breath test
Other
Lead sponsor
Benaroya Research Institute
Other
Eligibility
18 Years to 90 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 27, 2024 · Synced Oct 24, 2026, 8:22 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Aldosterone & Sodium Regulation in Postural Tachycardia Syndrome - Screening

NCT01783288
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Autonomic Function Testing, Posture Study, Measurement of Total Blood Volume, Exercise Capacity Test
Other · Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Oct 24, 2026, 8:22 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 24, 2026, 8:22 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Detection of Propofol in Exhaled Breath

NCT02214394
View directory record Official record
Conditions
Healthy
Interventions
High-performance liquid chromatography Analysis, SMART Device
Other · Device
Lead sponsor
Xhale Assurance
Industry
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2014
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 12, 2014 · Synced Oct 24, 2026, 8:22 PM EDT
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 24, 2026, 8:22 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 24, 2026, 8:22 PM EDT
Recruiting No phase listed Observational

Exhaled Breath: A Novel Technique for Rapid Diagnosis of Respiratory Diseases and Infections

NCT06775106
View directory record Official record
Conditions
Pulmonary Disease, Critical Illness
Interventions
There is no intervention in this observational study
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 120 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jan 14, 2025 · Synced Oct 24, 2026, 8:22 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Diagnostic Breath Analysis for Detection of Ventilator Acquired Pneumonia (VAP)

NCT03053258
View directory record Official record
Conditions
Bacterial Infections
Interventions
Collection of exhaled breath sample
Device
Lead sponsor
Landon Pediatric Foundation
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated May 7, 2019 · Synced Oct 24, 2026, 8:22 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Biomarkers of Molecular Risk in Smokers

NCT00598143
View directory record Official record
Conditions
Smoking Cessation
Interventions
Vignette, questionnaires and Saliva Samples, Urine Collection, Smoking cessation treatment
Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 28, 2015 · Synced Oct 24, 2026, 8:22 PM EDT
Completed No phase listed Observational

Adiposity and Airway Inflammation in HIV-Associated Airway Disease

NCT02975258
View directory record Official record
Conditions
Asthma, HIV, Adiposity
Interventions
Blood draw, Questionnaires, Spirometry, Methacholine challenge test, Quantitative CT scans, Urine pregnancy test, Adipose biopsy, Exhaled nitric oxide measurement
Procedure · Other · Radiation
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 80 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 13, 2017 · Synced Oct 24, 2026, 8:22 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Novel vs. Usual Brand Menthol Cigarettes on Abuse Liability

NCT07564648
View directory record Official record
Conditions
Cigarette Addiction, Tobacco Use Disorder
Interventions
Biospecimen Collection, Questionnaire Administration, Cigarette Purchase Task, Cross-Price Elasticity Task, Daily Diary Surveys, Progressive Ratio Task
Behavioral
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 24, 2026, 8:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Utilizing Exhaled Breathe Condensate Collection to Study Ion Regulation in Cystic Fibrosis

NCT01880723
View directory record Official record
Conditions
Cystic Fibrosis, Healthy
Interventions
Albuterol, Placebo saline
Drug
Lead sponsor
University of Arizona
Other
Eligibility
15 Years to 55 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 29, 2023 · Synced Oct 24, 2026, 8:22 PM EDT
Completed No phase listed Observational

Effects of Hemoperitoneum Driven Carbon Monoxide on Post-Traumatic Stability and Platelet Aggregation

NCT01594034
View directory record Official record
Conditions
Hemoperitoneum
Interventions
expired air
Procedure
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years and older · Female only
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated May 14, 2012 · Synced Oct 24, 2026, 8:22 PM EDT
Recruiting Not applicable Interventional

Miniaturized Breath-based Sensor for the Detection of Hypo- and Hyperglycemia

NCT07696273
View directory record Official record
Conditions
Diabetes, Hyperglycemia, Hypoglycemia (Diabetic)
Interventions
Sensing Device and Tedlar Bags
Device
Lead sponsor
Indiana University
Other
Eligibility
7 Years to 25 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jul 10, 2026 · Synced Oct 24, 2026, 8:22 PM EDT
Suspended Not applicable Interventional

Insulin Sensitivity in Men With the Metabolic Syndrome

NCT00433173
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
intravenous glucose tolerance test, testosterone, anastrozole, goserelin acetate implant, aerobic capacity (VO2 Max), MRI, muscle biopsy, measurement of resting metabolic rate (energy expenditure), Dual energy x-ray absorptiometry, Fasting oral glucose tolerance test
Procedure · Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
50 Years to 75 Years · Male only
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
2
States / cities
Baltimore, Maryland • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 2, 2010 · Synced Oct 24, 2026, 8:22 PM EDT
Completed Phase 2 Interventional

PMRR-NO: Pulmonary Metabolic Radiation Response Versus Exhaled Nitric Oxide

NCT00867477
View directory record Official record
Conditions
Gastrointestinal Disease, Esophageal Cancer, Lung Cancer
Interventions
Breathing Test, Respiratory Symptoms Questionnaire, Pet Scan
Procedure · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
163 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 28, 2014 · Synced Oct 24, 2026, 8:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pivot Breath Sensor Performance Study

NCT03870022
View directory record Official record
Conditions
Smoking Cessation, Smoking, Tobacco
Interventions
Pivot Breath Sensor System, Similar Carbon Monoxide breath sensor system
Device
Lead sponsor
Jennifer Marler, MD
Industry
Eligibility
18 Years to 80 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Jul 1, 2024 · Synced Oct 24, 2026, 8:22 PM EDT
Recruiting Not applicable Interventional

Platform of Randomized Adaptive Clinical Trials in Critical Illness

NCT05440851
View directory record Official record
Conditions
Respiratory Insufficiency, Extracorporeal Membrane Oxygenation Complication, Mechanical Ventilation Pressure High
Interventions
Ultra-Protective Ventilation Facilitated by Extracorporeal Support, Lung-Protective Ventilation (LPV), Driving Pressure-Limited Ventilation (DPL), Lung- and Diaphragm-Protective Ventilation and Sedation (LDPVS), Early Cohort corticosteroid dose, Extended Cohort corticosteroid dose, Usual care without routine corticosteroids, Usual care without extending corticosteroids, Usual care with fludrocortisone, Usual care without fludrocortisone, Drug 4 mL:, Drug 40 mg:, PEEP-20, PEEP-AOP, PEEP-10, VV ECMO-facilitated strategy of earlier awakening, extubation and rehabilitation, Electrical impedance tomography (EIT), no treatment / intervention arm is involved., Usual care, Early Routine IMT
Other · Drug
Lead sponsor
University Health Network, Toronto
Other
Eligibility
18 Years and older
Enrollment
6,250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
27
States / cities
Tucson, Arizona • Los Angeles, California • San Diego, California + 20 more
Source: ClinicalTrials.gov public record
Updated Oct 22, 2026 · Synced Oct 24, 2026, 8:22 PM EDT
Completed No phase listed Observational

sPLA2 in EBC During Acute Chest Syndrome

NCT03250585
View directory record Official record
Conditions
Sickle Cell Disease, Acute Chest Syndrome
Interventions
Exhaled Breath Condensate (EBC), Plasma Sample
Diagnostic Test
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
7 Years to 30 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 26, 2018 · Synced Oct 24, 2026, 8:22 PM EDT