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Showing 25–47 of 23 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Exhaled Nitric Oxide Clear all
Completed No phase listed Observational

A Prospective Study Measuring Exhaled Nitric Oxide in Exercise-Induced Asthma

NCT01097954
View directory record Official record
Conditions
Exercise Induced Asthma
Interventions
Not listed
Lead sponsor
Winthrop University Hospital
Other
Eligibility
8 Years to 21 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Mineola, New York
Source: ClinicalTrials.gov public record
Updated Feb 12, 2023 · Synced Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 PM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Exhaled Nitric Oxide Levels in Infants and Young Children Infected With RSV or Other Viral Infections

NCT01098227
View directory record Official record
Conditions
Bronchiolitis, Infection, Nitric Oxide
Interventions
Not listed
Lead sponsor
NYU Langone Health
Other
Eligibility
Up to 4 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Mineola, New York
Source: ClinicalTrials.gov public record
Updated Mar 15, 2020 · Synced Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Exhaled Levels of Nitric Oxide

NCT00753948
View directory record Official record
Conditions
Tetraplegia, Asthma
Interventions
N-Nitro L-arginine-methylester (L-NAME)
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Feb 27, 2020 · Synced Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 PM EDT
Active, not recruiting Phase 4 Interventional

FeNO as a Marker of Allergic Reactions to OFC and Response of OMA Treatment in Multiple FA

NCT06437171
View directory record Official record
Conditions
Food Allergy
Interventions
Omalizumab
Biological
Lead sponsor
AAADRS Clinical Research Center
Other
Eligibility
6 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Coral Gables, Florida
Source: ClinicalTrials.gov public record
Updated Aug 13, 2025 · Synced Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 PM EDT
Completed Phase 2 Interventional Results available

L-arginine in Severe Asthma Patients Grouped by Exhaled Nitric Oxide Levels

NCT01841281
View directory record Official record
Conditions
Asthma, Inflammation
Interventions
L-Arginine, Placebo
Drug
Lead sponsor
Nicholas Kenyon
Other
Eligibility
19 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 20, 2020 · Synced Jul 23, 2026, 12:37 PM EDT
Terminated Phase 4 Interventional

Management of Asthma Patients Guided by Exhaled Nitric Oxide (eNO)

NCT00739219
View directory record Official record
Conditions
Asthma
Interventions
Apieron Insight eNO monitor
Device
Lead sponsor
Apieron
Industry
Eligibility
12 Years and older
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
12
States / cities
Mission Viejo, California • San Jose, California • Glastonbury, Connecticut + 9 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2009 · Synced Jul 23, 2026, 12:37 PM EDT
Completed Phase 4 Interventional

Non-invasive Ways to Evaluate Lung Disease After Treatment With Xolair

NCT00139152
View directory record Official record
Conditions
Lung Disease
Interventions
Placebo, Xolair
Drug
Lead sponsor
Creighton University
Other
Eligibility
12 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
2
States / cities
Omaha, Nebraska • Albany, New York
Source: ClinicalTrials.gov public record
Updated Jan 6, 2014 · Synced Jul 23, 2026, 12:37 PM EDT
Recruiting No phase listed Observational

Use of fenoTRACK Device for Monitoring Changes of Fractional Exhaled Nitric Oxide (FeNO) in Uncontrolled Asthma Subjects and Controlled Asthma Subjects

NCT07228026
View directory record Official record
Conditions
Asthma
Interventions
fenoTRACK Device
Device
Lead sponsor
Biometry Inc
Industry
Eligibility
5 Years to 100 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
13
States / cities
Stockton, California • Panama City, Florida • Columbus, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 PM EDT
Completed No phase listed Observational

The Use of Fractionated Exhaled Nitric Oxide in the Diagnosis and Assessment of Disease Activity of Eosinophilic Esophagitis (Pilot)

NCT03812575
View directory record Official record
Conditions
Eosinophilic Esophagitis
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
5 Years to 18 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 9, 2024 · Synced Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Impact of FeNO Measured With the NIOX MINO® Device in Identifying Asthma Among Patients With Prolonged Respiratory Symptoms

NCT01518322
View directory record Official record
Conditions
Asthma
Interventions
NIOX MINO®
Device
Lead sponsor
Aerocrine AB
Industry
Eligibility
7 Years to 65 Years
Enrollment
235 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
13
States / cities
Byron, Minnesota • Chatfield, Minnesota • Pine Island, Minnesota + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 29, 2013 · Synced Jul 23, 2026, 12:37 PM EDT
Completed Phase 4 Interventional

Effect of Budesonide on Exhaled Nitric Oxide in Asthmatic Children

NCT00522782
View directory record Official record
Conditions
Asthma
Interventions
Nebulized Budesonide, Nitric Oxide Analyzer
Drug · Device
Lead sponsor
AAADRS Clinical Research Center
Other
Eligibility
4 Years to 6 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Coral Gables, Florida
Source: ClinicalTrials.gov public record
Updated Jan 22, 2009 · Synced Jul 23, 2026, 12:37 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 Jul 23, 2026, 12:37 PM EDT
Completed Phase 3 Interventional Results available

Role of RhuMab-E25 in Reducing Exhaled Nitric Oxide (NO) in Allergic Asthma

NCT00829179
View directory record Official record
Conditions
Allergic Asthma
Interventions
RhuMab-E25
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2004
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 7, 2016 · Synced Jul 23, 2026, 12:37 PM EDT