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ClinicalTrials.gov public records Last synced Sep 29, 2026, 11:14 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Carbon Monoxide Clear all
Completed Phase 2 Interventional

Hyperbaric Oxygen for Traumatic and Non-traumatic Brain Injury

NCT01986205
View directory record Official record
Conditions
Brain Injury, Chronic
Interventions
Hyperbaric Oxygen, Minimal pressure air
Combination Product
Lead sponsor
Lindell Weaver
Other
Eligibility
18 Years to 70 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
2
States / cities
Murray, Utah • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 4, 2022 · Synced Sep 29, 2026, 11:14 PM EDT
Terminated No phase listed Observational

Outcome Following Carbon Monoxide Poisoning in Children

NCT01059708
View directory record Official record
Conditions
Carbon Monoxide Poisoning
Interventions
Not listed
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
6 Years to 16 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 17, 2011 · Synced Sep 29, 2026, 11:14 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Hookah Smoking, Carbon Monoxide, and Coronary Endothelial Function

NCT03166787
View directory record Official record
Conditions
Smoking, Endothelial Dysfunction
Interventions
Charcoal hookah, E-coal hookah, Cigarette, Carbon Monoxide inhalation, Room Air inhalation, vitamin C, tadalafil
Other · Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
21 Years to 49 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 9, 2021 · Synced Sep 29, 2026, 11:14 PM 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 Sep 29, 2026, 11:14 PM EDT
Completed Phase 1 Interventional

Carbon Monoxide to Prevent Lung Inflammation

NCT00094406
View directory record Official record
Conditions
Respiratory Distress Syndrome, Adult
Interventions
Bronchoscopy, Bronchoalveolar lavage, Endotoxin, Carbon Monoxide
Procedure · Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 40 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Sep 29, 2026, 11:14 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Prediction of Jaundice in Term Infants

NCT01203410
View directory record Official record
Conditions
Infant, Newborn, Jaundice
Interventions
Not listed
Lead sponsor
NICHD Neonatal Research Network
Network
Eligibility
Up to 8 Hours
Enrollment
535 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1991 – 1992
U.S. locations
13
States / cities
Palo Alto, California • New Haven, Connecticut • Washington D.C., District of Columbia + 10 more
Source: ClinicalTrials.gov public record
Updated Mar 22, 2019 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Not applicable Interventional Results available

Monitoring of Exhaled Carbon Monoxide to Promote Pre-operative Smoking Cessation

NCT01014455
View directory record Official record
Conditions
Smoking
Interventions
Informing surgical patients about CO monitoring, a brief intervention recommending preoperative abstinence from smoking
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
169 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 22, 2011 · Synced Sep 29, 2026, 11:14 PM EDT
Enrolling by invitation No phase listed Observational

Carbon Monoxide Blood and DNA Biorepository

NCT01758653
View directory record Official record
Conditions
Carbon Monoxide Poisoning
Interventions
No study intervention
Other
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2032
U.S. locations
2
States / cities
Murray, Utah • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Sep 29, 2023 · Synced Sep 29, 2026, 11:14 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Normal Quantitative EEG (qEEG) Dataset

NCT02375126
View directory record Official record
Conditions
Carbon Monoxide Poisoning
Interventions
Electroencephalography
Procedure
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
18 Years to 55 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2023
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 10, 2022 · Synced Sep 29, 2026, 11:14 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

CO as a Stimulant for Mitochondrial Biogenesis in Human Cardiac Muscle

NCT01727167
View directory record Official record
Conditions
Cardiac Disease, Mitochondrial Biogenesis, Carbon Monoxide
Interventions
200ppm CO for one hour, Control
Drug · Other
Lead sponsor
John J Freiberger
Other
Eligibility
20 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 19, 2016 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Phase 2 Interventional Results available

Study of Inhaled Carbon Monoxide to Treat Idiopathic Pulmonary Fibrosis

NCT01214187
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis
Interventions
inhaled carbon monoxide, Oxygen
Drug · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 85 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
8
States / cities
San Francisco, California • Chicago, Illinois • New Orleans, Louisiana + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2017 · Synced Sep 29, 2026, 11:14 PM 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 Sep 29, 2026, 11:14 PM EDT
Completed No phase listed Observational

Prospective Evaluation of Biomarker Profiles in Idiopathic Pulmonary Fibrosis

NCT02151435
View directory record Official record
Conditions
IPF
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
35 Years to 80 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 26, 2017 · Synced Sep 29, 2026, 11:14 PM EDT
Terminated No phase listed Observational

Suspected Cases of Carbon Monoxide Poisoning in the ED

NCT03004235
View directory record Official record
Conditions
Carbon Monoxide Poisoning
Interventions
Observational data collection
Device
Lead sponsor
Nonin Medical, Inc
Industry
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 12, 2019 · Synced Sep 29, 2026, 11:14 PM EDT
Completed No phase listed Observational

A Comparison of Exhaled Carbon Monoxide Measurements Using the iCOquit Smokerlyzer and Vitalograph Breath CO Monitor vs Carboxyhemoglobin From Venous Samples While Validating a Mobile Research Application

NCT04826549
View directory record Official record
Conditions
Smoking, Cigarette
Interventions
Not listed
Lead sponsor
Rose Research Center, LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
30 participants
Timeline
2021
U.S. locations
2
States / cities
Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 13, 2022 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Carbon Monoxide Breath Sensor System Performance, Human Factors, and Usability Assessment Conducted in a Single Visit

NCT03148613
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
Carbon Monoxide Breath Sensor System (COBSS), Bedfont - Micro+™ Smokerlyzer®
Device
Lead sponsor
David Utley, MD
Industry
Eligibility
18 Years to 80 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Oct 18, 2022 · Synced Sep 29, 2026, 11:14 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Self-Monitoring of Carbon Monoxide to Enhance Reproductive Outcomes in Women

NCT02246114
View directory record Official record
Conditions
Pregnancy, Smoking, Smoking Cessation
Interventions
piCO+ Smokerlyzer® monitor, Text messages
Device · Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 16, 2017 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Smoking Reduction In Gravid Substance Use Disorders

NCT04132232
View directory record Official record
Conditions
Tobacco Smoking in Mother Complicating Pregnancy, Tobacco Use Disorder, Tobacco Smoking
Interventions
knowledge of expired maternal carbon monoxide and fetal carboxyhemoglobin levels
Diagnostic Test
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
16 Years to 45 Years · Female only
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 5, 2024 · Synced Sep 29, 2026, 11:14 PM EDT
Recruiting Phase 2 Interventional

Low-dose Carbon Monoxide (HBI-002) Trial to Evaluate Safety, Tolerability, PK, and Biomarkers in Parkinson's Disease

NCT07005180
View directory record Official record
Conditions
Parkinson Disease
Interventions
HBI-002, Vehicle (placebo)
Drug
Lead sponsor
Hillhurst Biopharmaceuticals, Inc.
Industry
Eligibility
40 Years to 80 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
8
States / cities
Fountain Valley, California • Gainesville, Florida • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study to Assess the Safety and Pharmacokinetics of HBI-002, an Oral Carbon Monoxide Therapeutic, in Healthy Volunteers

NCT03926819
View directory record Official record
Conditions
Anemia, Sickle Cell
Interventions
HBI-002
Drug
Lead sponsor
Hillhurst Biopharmaceuticals, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated May 23, 2025 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Phase 1Phase 2 Interventional

Carbon Monoxide-Saturated Medium for Islet Isolation

NCT02567240
View directory record Official record
Conditions
Chronic Pancreatitis
Interventions
Carbon monoxide-bubbled mediums
Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 69 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 4, 2019 · Synced Sep 29, 2026, 11:14 PM 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 Sep 29, 2026, 11:14 PM EDT
Withdrawn Phase 1Phase 2 Interventional

Carbon Monoxide Therapy for Severe Pulmonary Arterial Hypertension

NCT01523548
View directory record Official record
Conditions
Hypertension, Pulmonary
Interventions
Carbon Monoxide
Drug
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 9, 2017 · Synced Sep 29, 2026, 11:14 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

CO Monitoring for Tobacco Cessation in Quitlines

NCT05327660
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Quitline Treatment as Usual (TAU), Remote Carbon Monoxide (CO) Monitoring, Incentivized Remote CO Monitoring
Combination Product
Lead sponsor
Consumer Wellness Solutions
Industry
Eligibility
18 Years and older
Enrollment
229 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 28, 2024 · Synced Sep 29, 2026, 11:14 PM EDT