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ClinicalTrials.gov public records Last synced Sep 23, 2026, 8:19 AM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Breath Tests Clear all
Terminated Early Phase 1 Interventional Results available

Effect of a Low FODMAP Diet on SIBO Breath Test Positivity

NCT04627727
View directory record Official record
Conditions
SIBO
Interventions
low FODMAP diet
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 3, 2025 · Synced Sep 23, 2026, 8:19 AM EDT
Not listed No phase listed Observational

Comparative Assessment of Radioisotope Glucose and Breath Test

NCT04499742
View directory record Official record
Conditions
Small Intestinal Bacterial Overgrowth
Interventions
Using Isotope (Tc99m-Sulfur Colloid) to label glucose and administer this directly into duodenum.
Radiation
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 80 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 4, 2020 · Synced Sep 23, 2026, 8:19 AM 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 14, 2026 · Synced Sep 23, 2026, 8:19 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

The Measurement of Chemicals in Exhaled Breath Can Identify If a Person is Infected with COVID-19

NCT06571136
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
N5 Sensors
Industry
Eligibility
18 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Everett, Washington
Source: ClinicalTrials.gov public record
Updated Nov 19, 2024 · Synced Sep 23, 2026, 8:19 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 23, 2026, 8:19 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Breath Analysis Based Disease Biomarkers

NCT04341012
View directory record Official record
Conditions
Liver Diseases, Liver Cancer, COVID19
Interventions
Collection of breath sample
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 25, 2026 · Synced Sep 23, 2026, 8:19 AM EDT
Completed No phase listed Observational

Retrospective Analysis of Treatment Outcomes in Patients With Bacterial Overgrowth Syndrome Diagnosed by D-Xylose Breath Testing

NCT01324895
View directory record Official record
Conditions
Small Intestinal Bacterial Overgrowth Syndrome (SIBO), Small Bowel Bacterial Overgrowth Syndrome (SBBOS)
Interventions
Not listed
Lead sponsor
University of Florida
Other
Eligibility
Not listed
Enrollment
944 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 25, 2012 · Synced Sep 23, 2026, 8:19 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

The Impact and Detection of Driving Impairments Associated With Acute Cannabis Smoking

NCT02849587
View directory record Official record
Conditions
Cannabis Intoxication
Interventions
Cannabis
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 55 Years
Enrollment
199 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 3, 2022 · Synced Sep 23, 2026, 8:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Establishing Clinical Utility for a New Diagnostic Test for Patients With Shortness of Breath

NCT04693793
View directory record Official record
Conditions
Dyspnea, Unexplained Chronic Dyspnea
Interventions
Education Materials and Janssen Test
Other
Lead sponsor
Qure Healthcare, LLC
Industry
Eligibility
Not listed
Enrollment
219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 6, 2023 · Synced Sep 23, 2026, 8:19 AM EDT
Completed Phase 2 Interventional Results available

Dose Response of 28 Days of Dosing of GSK962040 in Type I and II Diabetic Male and Female Subjects With Gastroparesis

NCT01262898
View directory record Official record
Conditions
Gastroparesis
Interventions
GSK962040 (5 mg tablet), GSK962040 (25 mg tablet), GSK962040 (125 mg tablet), Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 80 Years
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
9
States / cities
Concord, California • Indianapolis, Indiana • Chevy Chase, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2021 · Synced Sep 23, 2026, 8:19 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Characterization of a Portable Solid-State Breath Acetone Testing Device for Real-Time Ketosis Status

NCT04130724
View directory record Official record
Conditions
Ketogenic Dieting, Ketosis
Interventions
Blood ketone testing, Breath ketone testing
Diagnostic Test
Lead sponsor
Readout, Inc.
Industry
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 16, 2019 · Synced Sep 23, 2026, 8:19 AM EDT
Completed Phase 3 Interventional

Bag Mode BreathID Hp Validation Versus Endoscopy in Detection of Helicobacter Pylori

NCT02010112
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
Breath Test Collection bags
Other
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
18 Years and older
Enrollment
193 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
9
States / cities
Baltimore, Maryland • Chevy Chase, Maryland • Detroit, Michigan + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2022 · Synced Sep 23, 2026, 8:19 AM EDT
Active, not recruiting Not applicable Interventional

Evaluation of Bariatric Endoscopic Antral Myotomy (BEAM) as a Treatment for Obesity

NCT05713071
View directory record Official record
Conditions
Obesity, Weight Loss, Delayed Gastric Emptying Following Procedure, Obesity, Mild, Obesity, Morbid, Obesity; Excess Calories
Interventions
Bariatric Endoscopic Antral Myotomy
Procedure
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 24, 2026 · Synced Sep 23, 2026, 8:19 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

13C-Spirulina Nitrogen Content GEBT Study

NCT04635306
View directory record Official record
Conditions
Gastroparesis
Interventions
Approved GEBT test meal
Diagnostic Test
Lead sponsor
Cairn Diagnostics
Industry
Eligibility
18 Years to 85 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Brentwood, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 2, 2021 · Synced Sep 23, 2026, 8:19 AM 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 17, 2023 · Synced Sep 23, 2026, 8:19 AM EDT
Completed Not applicable Interventional Results available

Assessing Portal Hypertension With Methacetin Breath Test

NCT02143778
View directory record Official record
Conditions
Patients With Compensated Liver Cirrhosis
Interventions
Methacetin Breath Test
Device
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
18 Years and older
Enrollment
246 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
3
States / cities
New Haven, Connecticut • Durham, North Carolina • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 19, 2022 · Synced Sep 23, 2026, 8:19 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Analysis of Volatile Chemicals in Lung Cancer Screen-Eligible Subjects Using Infrared Spectroscopy

NCT05174468
View directory record Official record
Conditions
Lung Cancer
Interventions
Not listed
Lead sponsor
Breathe BioMedical Inc
Industry
Eligibility
50 Years to 80 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Nov 17, 2023 · Synced Sep 23, 2026, 8:19 AM EDT
Completed No phase listed Observational

Breath Analysis for Evaluation of Radiation Exposure in Lung Cancer Patients Treated With Radiation

NCT01182155
View directory record Official record
Conditions
Lung Cancer, Non-Small Cell Lung Cancer, Small Cell Lung Cancer
Interventions
Exhaled Breath Sampling
Procedure
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jun 30, 2016 · Synced Sep 23, 2026, 8:19 AM EDT
Terminated Not applicable Interventional Results available

Methacetin Breath Test in Patients With Liver Disease Secondary to Heart Disease

NCT04176458
View directory record Official record
Conditions
Dilated Cardiomyopathy, Tricuspid Atresia
Interventions
Methacetin Breath Test (MBT)
Device
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 4, 2023 · Synced Sep 23, 2026, 8:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Juice Types on the Responses to Air Pollution

NCT02027415
View directory record Official record
Conditions
Air Pollution
Interventions
Beet juice, Orange juice
Dietary Supplement
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Piscataway, New Jersey
Source: ClinicalTrials.gov public record
Updated Dec 12, 2017 · Synced Sep 23, 2026, 8:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Multi-Component Breath Alcohol Intervention

NCT06124898
View directory record Official record
Conditions
Alcohol Use, Alcohol Drinking, Drinking Behavior
Interventions
Alcohol-related mobile health technologies, Motivational interview and psychoeducation on blood/breath alcohol concentration, Lower tech facilitation
Device · Behavioral
Lead sponsor
Northeastern University
Other
Eligibility
18 Years to 25 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Sep 23, 2026, 8:19 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Exhaled Breath Condensate Biomarkers of Inflammation in Individuals With Chronic Cervical Spinal Cord Injury

NCT02235714
View directory record Official record
Conditions
Tetraplegia, Asthma
Interventions
Not listed
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 89 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 9, 2014 · Synced Sep 23, 2026, 8:19 AM EDT
Recruiting No phase listed Observational

Cardiopulmonary Exercise Testing and Oscillometry for the Evaluation of Dyspnea

NCT06554353
View directory record Official record
Conditions
Breathing, Mouth, Lung Function Decreased, Dyspnea, Shortness of Breath
Interventions
Oscillometer
Device
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
50 participants
Timeline
2024 – 2026
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 23, 2026, 8:19 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

PyloPlus Urea Breath Test System Post Therapy Efficacy Confirmation Study

NCT05681689
View directory record Official record
Conditions
Helicobacter Pylori Infection, Post-Treatment, Efficacy
Interventions
PyloPlus UBT System, Histology, Rapid Urease Test, Comparator Breath Test, Stool Antigen Test
Combination Product · Diagnostic Test
Lead sponsor
ARJ Medical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
2
States / cities
Doral, Florida • Union City, New Jersey
Source: ClinicalTrials.gov public record
Updated May 5, 2023 · Synced Sep 23, 2026, 8:19 AM EDT