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ClinicalTrials.gov public records Last synced Sep 13, 2026, 6:38 PM EDT

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Showing 1–24 of 48 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Exhaled Nitric Oxide Clear all
Completed Phase 2 Interventional Results available

Pilot Study to Examine the Post-Dose Changes in Exhaled Nitric Oxide (eNO) Following Treatment With Fluticasone Propionate (FP)/Salmeterol (SAL) Combination Product Advair

NCT00927758
View directory record Official record
Conditions
Asthma
Interventions
fluticasone propionate/salmeterol (Flu/Sal) : 100mcg/50mcg, 250mcg/50mcg,500mcg/50 mcg
Drug
Lead sponsor
Sandoz
Industry
Eligibility
18 Years to 65 Years
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
3
States / cities
Gainesville, Florida • Iowa City, Iowa • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 28, 2017 · Synced Sep 13, 2026, 6:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Exhaled Nitric Oxide in Respiratory Syncytial Virus (RSV) Bronchiolitis: a Pilot Study

NCT01090557
View directory record Official record
Conditions
RSV Infection, Bronchiolitis
Interventions
Collection of exhaled breath
Other
Lead sponsor
Winthrop University Hospital
Other
Eligibility
1 Day to 4 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Mineola, New York
Source: ClinicalTrials.gov public record
Updated Mar 21, 2010 · Synced Sep 13, 2026, 6:38 PM EDT
Completed Not applicable Interventional Results available

Vivatmo Pro™ for Fractional Exhaled Nitric Oxide (FeNO) Monitoring in U.S. Asthmatic Patients

NCT04450108
View directory record Official record
Conditions
Asthma, Asthma in Children
Interventions
Vivatmo pro FeNO Test
Diagnostic Test
Lead sponsor
Bosch Healthcare Solutions GmbH
Industry
Eligibility
7 Years to 80 Years
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
6
States / cities
Birmingham, Alabama • Bakersfield, California • White Marsh, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2022 · Synced Sep 13, 2026, 6:38 PM EDT
Completed No phase listed Observational

Exhaled NO as a Biomarker of Gestational OSA and Persistence Postpartum

NCT02100943
View directory record Official record
Conditions
Pregnancy, OSA
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 19, 2017 · Synced Sep 13, 2026, 6:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Airflow Obstruction and Biomarkers of Airway Inflammation During and Following Acute Exacerbations of Childhood Asthma

NCT01227070
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
Seattle Children's Hospital
Other
Eligibility
6 Years to 18 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 21, 2010 · Synced Sep 13, 2026, 6:38 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Savannah Environmental Nutrition Study (SENS): Nutrition Intervention to Reduce Air Pollution-Related Airway Inflammation and Oxidative Stress

NCT07797413
View directory record Official record
Conditions
Air Pollution Exposure, Oxidative Stress, Airway Inflammation
Interventions
Antioxidant- and Nutrient-Rich Food-Based Nutrition Intervention
Other
Lead sponsor
Georgia Southern University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Savannah, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 13, 2026, 6:38 PM EDT
Completed No phase listed Observational Results available

A Study to Explore the Utility of Fractional Exhaled Nitric Oxide (FeNO) Compared With Methacholine Challenge (MCC) Testing in the Assessment of Patients With Suspected But Undiagnosed Asthma

NCT01648920
View directory record Official record
Conditions
Asthma
Interventions
NIOX MINO® Instrument (09-1100)
Device
Lead sponsor
Aerocrine AB
Industry
Eligibility
7 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
8
States / cities
Blue Bell, Pennsylvania • Collegeville, Pennsylvania • Doylestown, Pennsylvania + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2014 · Synced Sep 13, 2026, 6:38 PM EDT
Completed Phase 4 Interventional

Mometasone and Markers of Airway Inflammation

NCT00711165
View directory record Official record
Conditions
Asthma
Interventions
Placebo, Mometasone Furoate
Drug
Lead sponsor
Creighton University
Other
Eligibility
19 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jul 7, 2008 · Synced Sep 13, 2026, 6:38 PM EDT
Completed Phase 4 Interventional

Zileuton and Exhaled Nitric Oxide in Asthmatics

NCT00575861
View directory record Official record
Conditions
Asthma
Interventions
zileuton
Drug
Lead sponsor
Gelb, Arthur F., M.D.
Individual
Eligibility
21 Years to 80 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Lakewood, California
Source: ClinicalTrials.gov public record
Updated Dec 19, 2007 · Synced Sep 13, 2026, 6:38 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 28, 2023 · Synced Sep 13, 2026, 6:38 PM EDT
Active, not recruiting Phase 4 Interventional

Efficacy of Dupilumab Added to Medium Dose Inhaled Corticosteroid/Long-acting Beta-agonist (ICS/LABA) in Comparison to ICS Dose Escalation to High Dose ICS/LABA in Adolescent and Adult Patients With Uncontrolled Asthma

NCT06572228
View directory record Official record
Conditions
Asthma
Interventions
dupilumab, Matching Placebo, ICS/LABA
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
12 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
51
States / cities
Bakersfield, California • La Jolla, California • Lancaster, California + 47 more
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 13, 2026, 6:38 PM EDT
Completed No phase listed Observational

Phase II Evaluation of Exhaled Nitric Oxide (NO)

NCT01392144
View directory record Official record
Conditions
Lung Cancer
Interventions
Nitric oxide breath test, Questionnaires
Procedure · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 3, 2013 · Synced Sep 13, 2026, 6:38 PM EDT
Completed No phase listed Observational

Environmental Exposures, Genetics, and Exhaled Nitric Oxide in Pediatric Asthma

NCT00395096
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
6 Years to 12 Years
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 8, 2021 · Synced Sep 13, 2026, 6:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nitrate Supplementation During Final Examination Stress

NCT03159273
View directory record Official record
Conditions
Airway Disease
Interventions
Beetroot Juice Group
Dietary Supplement
Lead sponsor
Southern Methodist University
Other
Eligibility
18 Years to 50 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated May 22, 2018 · Synced Sep 13, 2026, 6:38 PM EDT
Not yet recruiting No phase listed Observational

Quantifying the Burden of Type 2 (T2) Inflammation in Asthma

NCT07675044
View directory record Official record
Conditions
Asthma, Type 2 Asthma
Interventions
FeNO Breath Test
Diagnostic Test
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Sep 13, 2026, 6:38 PM EDT
Completed Phase 2 Interventional Results available

Effects of L-arginine Supplementation in Adults With Moderate to Severe Asthma

NCT00280683
View directory record Official record
Conditions
Asthma
Interventions
L-arginine, Placebo
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 90 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 13, 2026, 6:38 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Beetroot Juice NO Cold Study

NCT06416228
View directory record Official record
Conditions
Respiratory Tract Infections, Cold Symptoms, Exhaled Nitric Oxide
Interventions
Beetroot juice
Dietary Supplement
Lead sponsor
Southern Methodist University
Other
Eligibility
18 Years to 30 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
2
States / cities
Dallas, Texas • Waco, Texas
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced Sep 13, 2026, 6:38 PM EDT
Completed No phase listed Observational

Exhaled Nitric Oxide and Airway Caliber in Children With Asthma

NCT01645397
View directory record Official record
Conditions
Asthma in Children
Interventions
Not listed
Lead sponsor
Atlantic Health System
Other
Eligibility
6 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Morristown, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 15, 2014 · Synced Sep 13, 2026, 6:38 PM EDT
Completed No phase listed Observational

Exhaled Nitric Oxide as a Biomarker of Disease Activity in Eosinophilic Esophagitis

NCT01170234
View directory record Official record
Conditions
Eosinophilic Esophagitis
Interventions
NIOX MINO® Airway Inflammation Monitor
Device
Lead sponsor
Tufts Medical Center
Other
Eligibility
7 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 15, 2019 · Synced Sep 13, 2026, 6:38 PM EDT
Completed Not applicable Interventional

Home Air in Agriculture: Pediatric Intervention Trial

NCT04919915
View directory record Official record
Conditions
Asthma in Children
Interventions
HEPA air cleaner
Device
Lead sponsor
University of Washington
Other
Eligibility
6 Years to 12 Years
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Yakima, Washington
Source: ClinicalTrials.gov public record
Updated Jun 8, 2021 · Synced Sep 13, 2026, 6:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of an Asthma Treatment Strategy Based on Exhaled Nitric Oxide Measurements in Adolescents

NCT00114413
View directory record Official record
Conditions
Asthma
Interventions
Inhaled corticosteroids, eNO measurement
Drug · Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
12 Years to 20 Years
Enrollment
547 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2006
U.S. locations
12
States / cities
Tucson, Arizona • Denver, Colorado • Washington D.C., District of Columbia + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 9, 2017 · Synced Sep 13, 2026, 6:38 PM EDT
Completed No phase listed Observational

The Effect of Allergen Immunotherapy on Exhaled Nitric Oxide in Adult Patients With Asthma and Allergic Rhinitis

NCT01318954
View directory record Official record
Conditions
Allergic Asthma, Allergic Rhinitis
Interventions
Allergen immunotherapy
Biological
Lead sponsor
Rohr and Columbo Asthma, Allergy and Immunology Specialists, P.C.
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Bryn Mawr, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 28, 2015 · Synced Sep 13, 2026, 6:38 PM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Monitoring and Outcome Measures in Asthmatics and Smokers During Pregnancy

NCT00425880
View directory record Official record
Conditions
Asthma, Tobacco Use
Interventions
Not listed
Lead sponsor
University of Kentucky
Other
Eligibility
18 Years to 35 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 8, 2013 · Synced Sep 13, 2026, 6:38 PM EDT
Completed No phase listed Observational

Measuring Exhaled Nitric Oxide (eNO) Using the Apieron INSIGHT System and the Aerocrine NIOX System

NCT00739531
View directory record Official record
Conditions
Asthma
Interventions
Exhaled nitric oxide (eNO)
Device
Lead sponsor
Apieron
Industry
Eligibility
5 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
2
States / cities
Shreveport, Louisiana • Lake Oswego, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 20, 2008 · Synced Sep 13, 2026, 6:38 PM EDT