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ClinicalTrials.gov public records Last synced Oct 25, 2026, 4:06 PM EDT

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Showing 193–216 of 303 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Breath Testing Clear all
Completed Not applicable Interventional

Lung Function Testing in Patients With Locally Advanced or Metastatic Solid Tumors

NCT00914147
View directory record Official record
Conditions
Unspecified Adult Solid Tumor, Protocol Specific
Interventions
pulmonary function testing
Procedure
Lead sponsor
Barbara Ann Karmanos Cancer Institute
Other
Eligibility
18 Years to 120 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 8, 2021 · Synced Oct 25, 2026, 4:06 PM EDT
Completed Not applicable Interventional Results available

QuitBet Phase II: A Digital Social Game That Pays You to Stop Smoking

NCT05075213
View directory record Official record
Conditions
Smoking Cessation
Interventions
contingency management (deposit contract), leaderboard and social feed, smoking cessation resource list
Behavioral
Lead sponsor
WayBetter, Inc.
Industry
Eligibility
21 Years and older
Enrollment
245 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Feb 27, 2026 · Synced Oct 25, 2026, 4:06 PM EDT
Completed Phase 2 Interventional

Treatment of Exercise-Induced Pulmonary Vascular Dysfunction After Pulmonary Thromboendarterectomy or Balloon Pulmonary Angioplasty

NCT03409588
View directory record Official record
Conditions
Chronic Thromboembolic Disease (CTED), Exercise Intolerance Post PEA Surgery
Interventions
Adempas
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 100 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Oct 25, 2026, 4:06 PM EDT
Completed Not applicable Interventional Results available

Interventions for Unemployed Hazardous Drinkers

NCT02559609
View directory record Official record
Conditions
Unemployment, Hazardous Drinking
Interventions
Contingency management for alcohol abstinence, Contingency management for completing job related activities, Job relelated activity contracting
Behavioral
Lead sponsor
UConn Health
Other
Eligibility
18 Years to 65 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Middletown, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 23, 2024 · Synced Oct 25, 2026, 4:06 PM 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 14, 2024 · Synced Oct 25, 2026, 4:06 PM EDT
Recruiting Phase 1Phase 2 Interventional

Mitigating PTSD-CUD After Sexual Assault

NCT05989841
View directory record Official record
Conditions
Posttraumatic Stress Disorder, Cannabis Use Disorder
Interventions
RISE Guide, Relaxation Control
Behavioral
Lead sponsor
University of Nevada, Las Vegas
Other
Eligibility
18 Years and older · Female only
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
6
States / cities
Minneapolis, Minnesota • Las Vegas, Nevada • Chapel Hill, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 16, 2026 · Synced Oct 25, 2026, 4:06 PM EDT
Completed Not applicable Interventional

Quit IT: Development of a Web-based, 3D Coping Skills Game to Increase Self-Efficacy for Maintaining Smoking Abstinence Following Hospitalization

NCT01915836
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
web-based video game (Quit IT), Questionnaires, Evaluation Interview
Other · Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
30 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 11, 2014 · Synced Oct 25, 2026, 4:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Respiratory Rate Validation Study - ChroniSense Polso

NCT05246358
View directory record Official record
Conditions
Respiratory Rate
Interventions
ChoniSense Polso
Device
Lead sponsor
ChroniSense Medical Ltd.
Industry
Eligibility
18 Years to 52 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Louisville, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 18, 2022 · Synced Oct 25, 2026, 4:06 PM EDT
Not listed No phase listed Observational

A Digital Smoking Cessation Intervention for Adults With Substance Use Disorder

NCT04419922
View directory record Official record
Conditions
Tobacco Use Disorder, Substance Use Disorders
Interventions
Smartphone Contingency Management Intervention
Behavioral
Lead sponsor
BrightView LLC
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 9, 2020 · Synced Oct 25, 2026, 4:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Detection of Pseudomonas Aeruginosa in the Airways of Patients With CF

NCT01303068
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
13C urea breath test Kit
Device
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Jan 30, 2024 · Synced Oct 25, 2026, 4:06 PM EDT
Completed No phase listed Observational

A Prospective Validation Study of a Rapid Point-of-Care Breath Test for Breast Cancer

NCT02888366
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Menssana Research, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
4
States / cities
Los Angeles, California • Montclair, New Jersey • Newark, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 29, 2018 · Synced Oct 25, 2026, 4:06 PM EDT
Completed Phase 3 Interventional Results available

Use of Methacetin Breath Test to Predict Liver Failure in Patients With Cirrhosis

NCT01157845
View directory record Official record
Conditions
Cirrhosis
Interventions
BreathID (Methacetin breath test)
Device
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
3
States / cities
Detroit, Michigan • Charleston, South Carolina • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated May 16, 2014 · Synced Oct 25, 2026, 4:06 PM 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 12, 2023 · Synced Oct 25, 2026, 4:06 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cough Reflex Sensitivity and Bronchial Hyper-responsiveness

NCT01777867
View directory record Official record
Conditions
Gastroesophageal Reflux Disease, Chronic Cough, Broncho-hyperreactivity
Interventions
Cough Reflex Sensitivity, Methacholine Challenge
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 17, 2017 · Synced Oct 25, 2026, 4:06 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Implications and Stability of Clinical and Molecular Phenotypes of Severe Asthma

NCT01748175
View directory record Official record
Conditions
Asthma, Severe Persistent Asthma
Interventions
Triamcinolone Acetonide
Drug
Lead sponsor
Sally E. Wenzel MD
Other
Eligibility
6 Years and older
Enrollment
715 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2022
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 16, 2022 · Synced Oct 25, 2026, 4:06 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Role of Acetaldehyde in the Development of Oral Cancer

NCT05973656
View directory record Official record
Conditions
Alcohol-Related Carcinoma, Fanconi Anemia, Oral Cavity Carcinoma
Interventions
Alcohol, Biospecimen Collection, Breath Test
Drug · Procedure
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
18 Years to 45 Years
Enrollment
170 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Oct 25, 2026, 4:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Characterization of Selected Aerosol Constituents Levels in the Exhaled Breath of Adult e-Vapor Users

NCT04881942
View directory record Official record
Conditions
Tobacco Use
Interventions
e-Vapor Product A, e-Vapor Product B, e-Vapor Product C, e-Vapor Product D
Other
Lead sponsor
Altria Client Services LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
High Point, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 30, 2024 · Synced Oct 25, 2026, 4:06 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 25, 2026, 4:06 PM EDT
Completed No phase listed Observational

Lactate for Energy and Neurocognition

NCT05207397
View directory record Official record
Conditions
Healthy Aging, Alzheimer Disease
Interventions
Lactate infusion
Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
60 Years to 95 Years
Enrollment
24 participants
Timeline
2023 – 2024
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated May 14, 2025 · Synced Oct 25, 2026, 4:06 PM 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 6, 2017 · Synced Oct 25, 2026, 4:06 PM 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 24, 2005 · Synced Oct 25, 2026, 4:06 PM EDT
Terminated Phase 2 Interventional Results available

Acute Effects of Inhaled Treprostinil in Fontan Patients

NCT02769624
View directory record Official record
Conditions
Congenital Heart Disease
Interventions
Treprostinil, Placebo
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 29, 2020 · Synced Oct 25, 2026, 4:06 PM EDT
Completed Not applicable Interventional Results available

Contingency Management to Promote Smoking Abstinence in Cancer Patients

NCT04605458
View directory record Official record
Conditions
Smoking Cessation
Interventions
Contingency Management, Standard Care
Combination Product
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
282 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Oct 25, 2026, 4:06 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Breathing and Attention Training (BAT) on Pain Modulation

NCT05773482
View directory record Official record
Conditions
Fibromyalgia
Interventions
Breathing and Attention Training (BAT), Breathing Control
Behavioral
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Oct 25, 2026, 4:06 PM EDT