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Showing 1–24 of 133 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Breath Collection Clear all
Completed No phase listed Observational Accepts healthy volunteers

Respiratory Rate Validation Study

NCT07147907
View directory record Official record
Conditions
Respiration Rate, Monitoring, Physiologic
Interventions
Chest Worn Respiratory Rate Monitor
Device
Lead sponsor
Perin Health Devices
Industry
Eligibility
22 Years and older
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Louisville, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 28, 2025 · Synced Sep 3, 2026, 8:51 AM EDT
Not listed Not applicable Interventional

Oscillating Positive Expiratory Pressure (OPEP) Therapy in Trauma Patients With Multiple Rib Fractures

NCT04100512
View directory record Official record
Conditions
Rib Fractures, Respiratory Complication
Interventions
Oscillating Positive Expiratory Pressure Device, Incentive spirometry
Device
Lead sponsor
Poudre Valley Health System
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Loveland, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 18, 2022 · Synced Sep 3, 2026, 8:51 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Brain Integrity in Survivors of Hodgkin Lymphoma Treated With Thoracic Radiation

NCT01820117
View directory record Official record
Conditions
Hodgkin Lymphoma
Interventions
Neurocognitive Evaluation, Quantitative Brain Imaging, Neurologic Evaluation, Health Questionnaire, Vascular Testing, Cardiopulmonary Exercise Testing, Echocardiography, Pulmonary Function Testing, Serum Biomarkers, Ophthalmology Examination
Other · Procedure
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
18 Years and older
Enrollment
416 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 28, 2018 · Synced Sep 3, 2026, 8:51 AM 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 5, 2023 · Synced Sep 3, 2026, 8:51 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Project 4A: Inspiratory Muscle Training and Diaphragm Strength

NCT02367170
View directory record Official record
Conditions
Sepsis
Interventions
Bilateral phrenic nerve stimulation and measurement of transdiaphragmatic pressure, Midazolam, Volitional Measurement of Maximal Inspiratory Pressure (MIP), Inspiratory Muscle Strength Training (IMST), SHAM Inspiratory Muscle Strength Training (IMST), Diaphragm thickness measurement, Blood and Urine samples
Procedure · Drug · Device + 1 more
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated May 6, 2018 · Synced Sep 3, 2026, 8:51 AM 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 27, 2016 · Synced Sep 3, 2026, 8:51 AM 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 9, 2026 · Synced Sep 3, 2026, 8:51 AM EDT
Not yet 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 Jul 21, 2026 · Synced Sep 3, 2026, 8:51 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Cue Reactivity in Virtual Reality: The Role of Context

NCT00862927
View directory record Official record
Conditions
Smoking
Interventions
Breath Sample, Saliva Sample, Questionnaire, View Virtual Reality Scenes
Other · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 19, 2012 · Synced Sep 3, 2026, 8:51 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Defining a PD-specific Breath Fingerprint of Underlying Inflammatory and Neurodegenerative Processes

NCT02749214
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Blood Sample Collection, Breath Sample Collection
Other
Lead sponsor
Emory University
Other
Eligibility
25 Years to 85 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 17, 2019 · Synced Sep 3, 2026, 8:51 AM EDT
Completed Phase 3 Interventional Results available

Rifaximin and Placebo in the Treatment of Bowel Dysfunction After Anterior Resection for Rectal Cancer

NCT01345175
View directory record Official record
Conditions
Rectal Cancer
Interventions
Rifaximin, Placebo
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
21 Years and older
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2023
U.S. locations
3
States / cities
Basking Ridge, New Jersey • Commack, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated May 13, 2024 · Synced Sep 3, 2026, 8:51 AM EDT
Completed Not applicable Interventional

Feasibility and Preliminary Efficacy of Hatha Yoga in Head and Neck Cancer Survivors

NCT01951664
View directory record Official record
Conditions
Head Neck Cancer
Interventions
Baseline Study Measures, Yoga Evaluation, Yoga Program, Yoga Practice Plan, Study Assessments
Other · Behavioral
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
2
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 26, 2016 · Synced Sep 3, 2026, 8:51 AM EDT
Completed Not applicable Interventional

Surrogate Markers of Portal Pressure

NCT02508298
View directory record Official record
Conditions
Portal Hypertension, Cirrhosis
Interventions
HVPG, Indocyanine Green Retention test, Liver stiffness measurement, Spleen stiffness measurement
Procedure · Drug · Device
Lead sponsor
VA Connecticut Healthcare System
Federal
Eligibility
18 Years to 85 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
2
States / cities
New Haven, Connecticut • West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 24, 2019 · Synced Sep 3, 2026, 8:51 AM 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 26, 2024 · Synced Sep 3, 2026, 8:51 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

13C-Pyruvate Breath Test

NCT01807702
View directory record Official record
Conditions
Healthy
Interventions
13C-Pyruvate 13C-lactate and dichloroacetate
Drug
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 50 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 1, 2015 · Synced Sep 3, 2026, 8:51 AM 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 25, 2018 · Synced Sep 3, 2026, 8:51 AM 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 27, 2015 · Synced Sep 3, 2026, 8:51 AM EDT
Completed Not applicable Interventional

Contingency Management to Reduce Alcohol Use in a Soup Kitchen Sample

NCT02499913
View directory record Official record
Conditions
Alcohol Abuse, Contingency Management
Interventions
breath alcohol monitoring, contingency management
Behavioral
Lead sponsor
UConn Health
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
New Britain, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 25, 2017 · Synced Sep 3, 2026, 8:51 AM 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 17, 2013 · Synced Sep 3, 2026, 8:51 AM EDT
Completed Phase 3 Interventional Results available

Exalenz Lab Mode System Compared to Biopsy for H.Pylori Detection

NCT02528721
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
Dual Mode BreathID Hp System
Device
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
18 Years and older
Enrollment
282 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
11
States / cities
Tucson, Arizona • Ventura, California • Lafayette, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2022 · Synced Sep 3, 2026, 8:51 AM 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 10, 2019 · Synced Sep 3, 2026, 8:51 AM EDT
Completed Not applicable Interventional Results available

Evaluation of Coronary Artery Calcification Using Gated Stationary Chest Tomosynthesis

NCT03169062
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Gated Stationary Chest Tomosynthesis
Device
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 100 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 10, 2020 · Synced Sep 3, 2026, 8:51 AM 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 – 2027
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 Apr 21, 2026 · Synced Sep 3, 2026, 8:51 AM EDT
Completed Not applicable Interventional

Sepsis, Severe Sepsis and Septic Shock Detection by Breath Analysis

NCT03497182
View directory record Official record
Conditions
Sepsis
Interventions
Breath sample collection
Device
Lead sponsor
Landon Pediatric Foundation
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated May 6, 2019 · Synced Sep 3, 2026, 8:51 AM EDT