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ClinicalTrials.gov public records Last synced Oct 7, 2026, 2:21 AM EDT

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Showing 25–41 of 41 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Breath carbon monoxide measurement Clear all
Completed Phase 4 Interventional Results available

CPT-SMART for Treatment of PTSD and Cigarette Smoking

NCT03978442
View directory record Official record
Conditions
Smoking, Stress Disorders, Post-Traumatic
Interventions
Smoking Cessation Cognitive Behavioral Therapy (CBT), Bupropion, Cognitive Processing Therapy, Smoking Abstinence Reinforcement Therapy, Yoked Contingency Management
Behavioral · Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 80 Years
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 2, 2026 · Synced Oct 7, 2026, 2:21 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Exhaled Carbon Monoxide and Red Blood Cell Turnover

NCT03288233
View directory record Official record
Conditions
Diabetes Mellitus, Healthy
Interventions
Breath carbon monoxide measurement
Diagnostic Test
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 20, 2017 · Synced Oct 7, 2026, 2:21 AM EDT
Completed No phase listed Observational

Breath Carbon Monoxide and Cotinine as Biomarkers to Distinguish Smokers From Nonsmokers

NCT01031121
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 64 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 7, 2026, 2:21 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 21, 2020 · Synced Oct 7, 2026, 2:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Carbon Monoxide Monitor for the Measurement of End-Tidal Carbon Monoxide Levels in Children With or Without Hemolysis

NCT01848691
View directory record Official record
Conditions
Sickle Cell Anemia
Interventions
Measurement of carbon monoxide level in exhaled breath
Other
Lead sponsor
Ashutosh Lal
Other
Eligibility
5 Years to 14 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Jun 2, 2014 · Synced Oct 7, 2026, 2:21 AM EDT
Completed Not applicable Interventional Results available

COach2Quit TRIAL: Assessing a Prototype Personal Carbon Monoxide Monitor for Smoking Cessation

NCT03142932
View directory record Official record
Conditions
Smoking, Smoking Cessation
Interventions
Individualized carbon monoxide (iCO) monitor, COach2Quit smartphone application, Cessation counseling
Device · Other · Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 4, 2019 · Synced Oct 7, 2026, 2:21 AM 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 7, 2026, 2:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Salt in Postural Tachycardia Syndrome

NCT01547117
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Blood Volume, Total Blood Volume, Exercise Capacity Test - Bicycle, Posture Study
Radiation · Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 50 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2021
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 22, 2022 · Synced Oct 7, 2026, 2:21 AM EDT
Completed Not applicable Interventional

The Influence of Cardiorespiratory Fitness on Firefighter Cardiovascular Health Under Exercise Conditions

NCT04514354
View directory record Official record
Conditions
Cardiovascular Diseases, Post-Exercise Hypotension
Interventions
GEST
Behavioral
Lead sponsor
University of Connecticut
Other
Eligibility
21 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 14, 2020 · Synced Oct 7, 2026, 2:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pivot Breath Sensor Human Factors and Usability Study

NCT03835260
View directory record Official record
Conditions
Smoking Cessation, Smoking, Tobacco
Interventions
Pivot Breath Sensor
Device
Lead sponsor
Jennifer Marler, MD
Industry
Eligibility
18 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Nov 8, 2022 · Synced Oct 7, 2026, 2:21 AM EDT
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 Sep 24, 2026 · Synced Oct 7, 2026, 2:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Assessment of the Pivot Breath Sensor: Single-Arm Cohort Study

NCT04133064
View directory record Official record
Conditions
Smoking Reduction, Smoking Behaviors, Smoking, Tobacco, Smoking Cessation
Interventions
Pivot Breath Sensor
Device
Lead sponsor
Jennifer Marler, MD
Industry
Eligibility
18 Years to 80 Years
Enrollment
234 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Nov 9, 2022 · Synced Oct 7, 2026, 2:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pivot Breath Sensor Performance Study

NCT03870022
View directory record Official record
Conditions
Smoking Cessation, Smoking, Tobacco
Interventions
Pivot Breath Sensor System, Similar Carbon Monoxide breath sensor system
Device
Lead sponsor
Jennifer Marler, MD
Industry
Eligibility
18 Years to 80 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Jul 1, 2024 · Synced Oct 7, 2026, 2:21 AM 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 7, 2026, 2:21 AM EDT
Completed Not applicable Interventional

Mobile Contingency Management for Smoking Cessation in Returning US Veterans

NCT02513069
View directory record Official record
Conditions
Smoking, Veterans
Interventions
Nicotine gum, mobile contingency management, Telephone counseling, Nicotine patch, Nicotine lozenge, Smart phone, Carbon monoxide monitor
Other · Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
291 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 21, 2020 · Synced Oct 7, 2026, 2:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Trial for Harm Reduction With Incentives & Vaping E-cigarettes

NCT06111053
View directory record Official record
Conditions
Obesity, Smoking Cessation
Interventions
ENDS, CI, No ENDS, NI
Other
Lead sponsor
Brown University
Other
Eligibility
21 Years to 99 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Nov 18, 2024 · Synced Oct 7, 2026, 2:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Utilizing Exhaled Breathe Condensate Collection to Study Ion Regulation in Cystic Fibrosis

NCT01880723
View directory record Official record
Conditions
Cystic Fibrosis, Healthy
Interventions
Albuterol, Placebo saline
Drug
Lead sponsor
University of Arizona
Other
Eligibility
15 Years to 55 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 29, 2023 · Synced Oct 7, 2026, 2:21 AM EDT