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Showing 1–24 of 209 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Breath Analysis Clear all
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

MyGI Diet for Colorectal Cancer Prevention

NCT05396846
View directory record Official record
Conditions
Colorectal Neoplasms
Interventions
Eating Plan 1, Eating Plan 2, Eating Plan 3
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
19 Years and older
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 4, 2026, 4:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Smartphone-based Financial Incentives

NCT03922360
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Smartphone-based Financial Incentives, Best Practices
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older · Female only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Sep 4, 2026, 4:36 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 4, 2026, 4:36 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 4, 2026, 4:36 AM EDT
Terminated No phase listed Interventional Results available

Companion Protocol for Methacetin Breath Test (MBT) in Conatus Protocol IDN-6556-17

NCT03462576
View directory record Official record
Conditions
Decompensated Cirrhosis
Interventions
Methacetin Breath Test, Emricasan, Placebo oral capsule
Combination Product · Drug
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
18 Years and older
Enrollment
199 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Lakewood Rch, Florida
Source: ClinicalTrials.gov public record
Updated Dec 19, 2022 · Synced Sep 4, 2026, 4:36 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Micro/Nano Device for Exhaled Breath Analysis

NCT02123030
View directory record Official record
Conditions
Lung Cancer, Pulmonary Disease
Interventions
Not listed
Lead sponsor
University of Louisville
Other
Eligibility
20 Years to 85 Years
Enrollment
728 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Jun 17, 2021 · Synced Sep 4, 2026, 4:36 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 4, 2026, 4:36 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 4, 2026, 4:36 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 4, 2026, 4:36 AM EDT
Completed Not applicable Interventional

Massage Therapy Versus Music Therapy Pilot Study

NCT02227680
View directory record Official record
Conditions
ALL
Interventions
Music Therapy, Massage Therapy
Other
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 27, 2015 · Synced Sep 4, 2026, 4:36 AM EDT
Completed No phase listed Observational Results available

Congenital Sucrase-Isomaltase Deficiency (CSID) Genetic Prevalence Study (GPS)

NCT01914003
View directory record Official record
Conditions
Congenital Sucrase-isomaltase Deficiency (CSID)
Interventions
Not listed
Lead sponsor
QOL Medical, LLC
Industry
Eligibility
Up to 18 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
19
States / cities
Los Angeles, California • Oakland, California • Aurora, Colorado + 16 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2017 · Synced Sep 4, 2026, 4:36 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 4, 2026, 4:36 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Harnessing the Power of Technology: MOMBA for Postpartum Smoking

NCT02237898
View directory record Official record
Conditions
Smoking Cessation
Interventions
MoMba Live Long app & Sensordrone™ carbon-monoxide sensor, Office contingency management, Sensordrone™ carbon-monoxide sensor, MoMba Live Long Smartphone application
Behavioral · Device
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 20, 2020 · Synced Sep 4, 2026, 4:36 AM EDT
Recruiting Not applicable Interventional

Quantitative Ultrasound(DeepUSFF) vs MRI-PDFF for Liver Fat Assessment in MASLD

NCT07192159
View directory record Official record
Conditions
Metabolic Dysfunction-Associated Steatotic Liver Disease, Hepatic Steatosis, Liver Disease Parenchymal
Interventions
Quantitative ultrasound (DeepUSFF)
Device
Lead sponsor
Seoul National University Hospital
Other
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Boardman, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 24, 2025 · Synced Sep 4, 2026, 4:36 AM EDT
Terminated No phase listed Observational

Mesothelioma Early Detection by VOCs

NCT04106973
View directory record Official record
Conditions
Pleural Mesothelioma, Asbestos Exposure, Pleural Plaque
Interventions
Not listed
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Farmington Hills, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 4, 2026, 4:36 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 4, 2026, 4:36 AM EDT
Not listed Not applicable Interventional

The Inhibition of Platelet Antiaggregating Activity of Clopidogrel by Atorvastatin Detected by Erythromycin Breath Test: a Metabolic Inhibition of Hepatic Cytochrome P450-3A

NCT00004564
View directory record Official record
Conditions
Hypercholesterolemia, Thrombosis
Interventions
Clopidogrel, Atorvastatin
Drug
Lead sponsor
National Center for Research Resources (NCRR)
NIH
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 4, 2026, 4:36 AM EDT
Not yet recruiting Not applicable Interventional

Inhaled Nitric Oxide in Severe Obesity

NCT06675435
View directory record Official record
Conditions
Obesity, Respiratory Insufficiency, Hypoxemic Respiratory Failure, Nitric Oxide
Interventions
Nitric oxide
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Sep 4, 2026, 4:36 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Integrated Radiographic and Metabolomics Risk Assessment in Patients With Interstitial Lung Diseases

NCT04119115
View directory record Official record
Conditions
Lung Diseases, Interstitial, Pulmonary Fibrosis
Interventions
CT-V, Metabolites
Device · Other
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated May 2, 2023 · Synced Sep 4, 2026, 4:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ultra-Processed Foods, Palatability, Appetite, and Gastrointestinal Transit

NCT07600281
View directory record Official record
Conditions
Appetite, Gastrointestinal Transit, Food Processing, Food Palatability, Eating Behavior
Interventions
Palatable Ultra-Processed Food Meal, Unpalatable Ultra-Processed Food Meal, Palatable Non-Ultra-Processed Food Meal, Unpalatable Non-Ultra-Processed Food Meal
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 4, 2026, 4:36 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 4, 2026, 4:36 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Nutrient Sensing in the Duodenum

NCT01694004
View directory record Official record
Conditions
The Effect of LCFA on Nutrient Absorption
Interventions
Benzocaine Infusion into Duodenum
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 10, 2024 · Synced Sep 4, 2026, 4:36 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 4, 2026, 4:36 AM EDT
Completed Phase 3 Interventional Results available

BreathID 13C-Methacetin Breath Test for Detecting Cirrhosis

NCT00736840
View directory record Official record
Conditions
Chronic Liver Disease
Interventions
c13 methacetin solution with breath analyzer
Device
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
18 Years and older
Enrollment
414 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
8
States / cities
Los Angeles, California • Detroit, Michigan • Cleveland, Ohio + 5 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2023 · Synced Sep 4, 2026, 4:36 AM EDT