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ClinicalTrials.gov public records Last synced Oct 19, 2026, 3:14 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 83 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Breath Sample Clear all
Completed No phase listed Observational

COVID Breath Test - Ancon

NCT04760639
View directory record Official record
Conditions
Covid19
Interventions
Breath test
Diagnostic Test
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 14, 2022 · Synced Oct 19, 2026, 3:14 PM EDT
Terminated Not applicable Interventional Results available

Exhaled Breath Analysis to Predict Risk of Symptomatic Pneumonitis

NCT04040244
View directory record Official record
Conditions
Pneumonitis, Nonsmall Cell Lung Cancer Stage III
Interventions
Exhaled Breath Collection, Blood sample
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 11, 2023 · Synced Oct 19, 2026, 3:14 PM EDT
Active, not recruiting No phase listed Observational

Multicenter Symphony™ IL-6 Monitoring Sepsis ED Pilot Study

NCT07425587
View directory record Official record
Conditions
Sepsis, Septic Shock
Interventions
Not listed
Lead sponsor
Bluejay Diagnostics, Inc.
Industry
Eligibility
22 Years and older
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
5
States / cities
Gainesville, Florida • Boston, Massachusetts • Winston-Salem, North Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 19, 2026, 3:14 PM EDT
Completed No phase listed Observational

Prematurity and Respiratory Outcomes Program (PROP)

NCT01435187
View directory record Official record
Conditions
Prematurity, Respiratory Disease
Interventions
Not listed
Lead sponsor
University of Pennsylvania
Other
Eligibility
1 Day to 7 Days
Enrollment
835 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
13
States / cities
Oakland, California • San Francisco, California • Indianapolis, Indiana + 8 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2016 · Synced Oct 19, 2026, 3:14 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 19, 2026, 3:14 PM 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 26, 2017 · Synced Oct 19, 2026, 3:14 PM 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 20, 2012 · Synced Oct 19, 2026, 3:14 PM EDT
Completed Phase 2 Interventional Results available

ARJ C13 Urea Breath Test System

NCT04036838
View directory record Official record
Conditions
H. Pylori Infection
Interventions
PyloPlus UBT System, Histology, Rapid Urease Test, H.pylori Culture
Combination Product · Diagnostic Test
Lead sponsor
ARJ Medical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
415 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
6
States / cities
Clearwater, Florida • Clermont, Florida • Largo, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2019 · Synced Oct 19, 2026, 3:14 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 19, 2026, 3:14 PM EDT
Recruiting Not applicable Interventional

A Pilot Study Examining Low Sulfur Diet as Treatment for Persistent Symptoms in Quiescent Crohn's Disease

NCT05849012
View directory record Official record
Conditions
Crohn's Disease in Remission
Interventions
Low Sulfur Diet, Usual Diet
Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Oct 19, 2026, 3:14 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 19, 2026, 3:14 PM EDT
Completed Not applicable Interventional

Technological Innovations in Behavioral Treatments for Cigarette Smoking

NCT00926939
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Reinforcement for the abstinence of smoking, Reinforcement for submission of videos with CO sample
Behavioral
Lead sponsor
National Development and Research Institutes, Inc.
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 14, 2015 · Synced Oct 19, 2026, 3:14 PM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Bacterial Overgrowth Associated With Chronic Multisymptom Illness Complex

NCT00956150
View directory record Official record
Conditions
Gulf War Syndrome
Interventions
Lactulose Breath Test, Rifaximin, Placebo
Procedure · Drug
Lead sponsor
Henry C. Lin, MD
Federal
Eligibility
21 Years and older
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2009
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated May 1, 2013 · Synced Oct 19, 2026, 3:14 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Detecting Drugs of Abuse Via Exhaled Breath Samples Using Differential Mobility Spectrometry

NCT05384470
View directory record Official record
Conditions
Opiate Abuse, Marijuana Abuse, Diagnostic
Interventions
Marihuana, BID2 Instrument - breathalyzer
Drug · Device
Lead sponsor
Mclean Hospital
Other
Eligibility
21 Years to 50 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 2, 2025 · Synced Oct 19, 2026, 3:14 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Culturally Tailored Smartphone Application for African American Smokers

NCT05188287
View directory record Official record
Conditions
Smoking Cessation
Interventions
HealthyCells
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated May 1, 2026 · Synced Oct 19, 2026, 3:14 PM 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 7, 2018 · Synced Oct 19, 2026, 3:14 PM EDT
Terminated Not applicable Interventional

Incentives to Promote Smoking Cessation in Low SES Women

NCT03173274
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Brief Motivational Intervention, Contingency Management, Non-Contingent Reinforcement
Behavioral
Lead sponsor
Brown University
Other
Eligibility
18 Years and older · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Mar 4, 2019 · Synced Oct 19, 2026, 3:14 PM EDT
Completed No phase listed Observational

COVID-19 Respiratory Outcomes Registry

NCT05074875
View directory record Official record
Conditions
Covid19
Interventions
Questionnaires and Patient Reported Outcomes (PROs), Nasal Swab COVID-19 reverse transcription polymerase chain reaction test (RT-PCR), Blood Samples for Biomarkers, High Resolution Computed Tomography, Physical Exam and Vital Signs, Medical Research Council Sum Score, Hand Grip Strength, Spirometry, Diffusing Capacity of Carbon Monoxide, 6 Minute Walk Test, Sit to Stand (STS) Measurement
Other · Diagnostic Test · Genetic
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
37 participants
Timeline
2021 – 2023
U.S. locations
4
States / cities
St Louis, Missouri • New York, New York • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 27, 2023 · Synced Oct 19, 2026, 3:14 PM EDT
Recruiting Not applicable Interventional

Using E-Nose Technology to Measure Response to Treatment in People With Malignant Pleural Mesothelioma

NCT06037941
View directory record Official record
Conditions
Malignant Pleural Mesothelioma
Interventions
E-Nose testing, Research blood
Diagnostic Test
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
30 Years to 85 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 19, 2026, 3:14 PM EDT
Not listed No phase listed Observational

Paced Electrocardiogram Requiring Fast Emergent Coronary Therapy (PERFECT) Study

NCT02765477
View directory record Official record
Conditions
Acute Myocardial Infarction
Interventions
Not listed
Lead sponsor
Hennepin County Medical Center, Minneapolis
Other
Eligibility
18 Years and older
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 1, 2016 · Synced Oct 19, 2026, 3:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Comparison of Capnography Sampling Lines

NCT03554629
View directory record Official record
Conditions
Capnography
Interventions
Capnography CO2 cannula sampling Flexiterline (CCSF) designs with supplemental O2
Device
Lead sponsor
Medtronic - MITG
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Louisville, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 6, 2021 · Synced Oct 19, 2026, 3:14 PM EDT
Terminated No phase listed Observational

Analysis of Volatile Organic Compounds in the Breath of Lung Transplant Rejection Patients Using Infrared Spectroscopy

NCT06309628
View directory record Official record
Conditions
Lung Transplant Rejection
Interventions
Breathe sample
Diagnostic Test
Lead sponsor
Paragonix Technologies
Industry
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 31, 2025 · Synced Oct 19, 2026, 3:14 PM 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 6, 2023 · Synced Oct 19, 2026, 3:14 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 19, 2026, 3:14 PM EDT