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ClinicalTrials.gov public records Last synced Oct 30, 2026, 3:48 PM EDT

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Showing 73–96 of 112 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: sputum Clear all
Completed Phase 4 Interventional Accepts healthy volunteers

Utility of Versican and Hyaluronan Measurement in Induced Sputum as Biomarkers of Asthma

NCT00980707
View directory record Official record
Conditions
Allergic Asthma
Interventions
Inhaled corticosteroid (fluticasone)
Drug
Lead sponsor
Associated Scientists to Help Minimize Allergies
Other
Eligibility
18 Years to 45 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 19, 2012 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Sputum Studies of Anti-Citrullinated Protein Antibodies (ACPA) and Rheumatoid Arthritis (RA) Origins

NCT04474392
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
N/A (Observational Study)
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 100 Years
Enrollment
340 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Oct 30, 2026, 3:48 PM EDT
Completed Not applicable Interventional

Vitamin D and Microbiota in Cystic Fibrosis

NCT02589444
View directory record Official record
Conditions
Vitamin D Deficiency, Cystic Fibrosis
Interventions
High-Dose Vitamin D3, Stool Sample, Sputum Sample, Sham Comparator, Blood draw
Dietary Supplement · Other · Procedure
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 14, 2017 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Interventional Accepts healthy volunteers Results available

A Clinical Study to Evaluate Effects of an Oral Rinse on Plaque and Gingivitis

NCT03421145
View directory record Official record
Conditions
Plaque
Interventions
3M™ Oral Rinse, Vehicle Control Oral Rinse, PerioShield™ Oral Health Rinse, Water
Device · Other
Lead sponsor
Solventum US LLC
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Oct 1, 2024 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of the Practice of Three Morning Sputa on Separate Days for Diagnosis of Mtb

NCT00212550
View directory record Official record
Conditions
Pulmonary TB
Interventions
Obtain standard three daily sputum samples vs. three samples on the first day for the diagnosis of pulmonary TB.
Procedure
Lead sponsor
NYU Langone Health
Other
Eligibility
21 Years to 75 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 31, 2016 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Observational

Initial and Chronic Methicillin Resistant Staphylococcus Aureus (MRSA) Infection in Cystic Fibrosis (CF)

NCT02684422
View directory record Official record
Conditions
Methicillin-Resistant Staphylococcus Aureus, Cystic Fibrosis
Interventions
Intervention N/A. Observational study
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
4 Years to 99 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
3
States / cities
Birmingham, Alabama • Chapel Hill, North Carolina • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Real World and Genomic Data Based Asthma Insight Through Network Analysis

NCT06623435
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
1,075 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
5
States / cities
Denver, Colorado • New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Observational

Immune Response Under Immunotherapy in Metastatic NSCLC: Sputum, Blood Samples and Microbioata Study

NCT04804137
View directory record Official record
Conditions
Non-squamous Lung Cancer, Metastatic Lung Cancer
Interventions
Blood, sputum, saliva, stool
Other
Lead sponsor
University Hospital, Tours
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 17, 2024 · Synced Oct 30, 2026, 3:48 PM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

To Identify Persons Who Are Susceptible to WSP-induced Inflammation and Examine the Role of GSTM1 and Other Factors in This Susceptibility

NCT02767973
View directory record Official record
Conditions
Airway Inflammation, Allergic Asthma
Interventions
Wood Smoke Particles (WSP)
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 45 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2027
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 30, 2026, 3:48 PM EDT
Not listed No phase listed Observational

Biomarkers for Feeding Intolerance in Infants With Complex Congenital Heart Defects Undergoing Single Ventricle Staged Palliation

NCT02995577
View directory record Official record
Conditions
Single Ventricle Physiology
Interventions
Feeding tolerant, Feeding intolerant, Necrotizing enterocolitis
Other
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
1 Day to 3 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 16, 2016 · Synced Oct 30, 2026, 3:48 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Azithromycin Treatment for the Airway Microbiome in Asthma

NCT03736629
View directory record Official record
Conditions
Asthma Chronic
Interventions
Azithromycin, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 55 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 23, 2023 · Synced Oct 30, 2026, 3:48 PM EDT
Recruiting No phase listed Observational

Remote Sputum Collection in Cystic Fibrosis

NCT06950892
View directory record Official record
Conditions
Cystic Fibrosis, Infections
Interventions
Not listed
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
4
States / cities
Denver, Colorado • Baltimore, Maryland • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 30, 2026, 3:48 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

An Imaging Study Using PET/CT to Characterize the Effect of Intravenous Reslizumab on Airway Inflammation

NCT02937168
View directory record Official record
Conditions
Asthma
Interventions
Reslizumab, Fludeoxyglucose F 18 (FDG), Placebo
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 9, 2021 · Synced Oct 30, 2026, 3:48 PM EDT
Terminated No phase listed Observational

Surveillance For New Lung Primaries

NCT00205439
View directory record Official record
Conditions
Lung Cancer
Interventions
Not listed
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Not listed
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 15, 2019 · Synced Oct 30, 2026, 3:48 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The Rhinovirus Hospitalization and Investigation of Nasal-airway Omics (RHINO) Study

NCT07342582
View directory record Official record
Conditions
Rhinovirus
Interventions
Nasal Swab Healthy Surveillance, Nasal Swab Sick Samples, Nasal Swab Hospitalized Cohort, Sick Follow-up Survey, Older Cohort Control Group, Procedural Comfort or Care
Diagnostic Test · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Up to 17 Years
Enrollment
670 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Minimally Invasive Biomarker for Asthma Disease Severity

NCT02225678
View directory record Official record
Conditions
Asthma, Healthy
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated May 17, 2016 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

DECAMP-1: Diagnosis and Surveillance of Indeterminate Pulmonary Nodules

NCT01785342
View directory record Official record
Conditions
Lung Cancer
Interventions
Biosample and Imaging Collection
Other
Lead sponsor
Boston University
Other
Eligibility
45 Years and older
Enrollment
489 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2022
U.S. locations
15
States / cities
Los Angeles, California • San Diego, California • Denver, Colorado + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 15, 2022 · Synced Oct 30, 2026, 3:48 PM EDT
Completed Not applicable Interventional

Effect of Curcumin on Lung Inflammation

NCT01514266
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Curcumin+Bioprine, Placebo
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
40 Years to 80 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 23, 2012 · Synced Oct 30, 2026, 3:48 PM EDT
Terminated Not applicable Interventional

Effects of High Flow Nasal Cannula on Sputum Clearance in Acute Exacerbation of Chronic Obstructive Pulmonary Disease

NCT04217746
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, COPD Exacerbation, Airflow Obstruction
Interventions
High Flow Nasal Cannula
Device
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 22, 2025 · Synced Oct 30, 2026, 3:48 PM EDT
Active, not recruiting No phase listed Observational

Nashville Early Diagnosis Lung Cancer Project

NCT01475500
View directory record Official record
Conditions
Lung Cancer
Interventions
Sputum sample, Pulmonary function tests, Computerized tomography (CT) scan of the chest, Buccal epithelium collection, Nasal brushings, Bronchoscopy, Bronchoalveolar lavage, Blood sample collection, Urine sample, Questionnaire-data collection
Procedure · Radiation · Other
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
55 Years to 80 Years
Enrollment
480 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2026
U.S. locations
2
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 12, 2023 · Synced Oct 30, 2026, 3:48 PM EDT
Terminated Not applicable Interventional Results available

HFNC Effect on BCSS in Patients With COPD

NCT02825043
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
High-Flow Nasal Cannula
Device
Lead sponsor
University of Oklahoma
Other
Eligibility
35 Years to 80 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jun 29, 2020 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Observational

Community Acquired Pneumonia in Older Adults

NCT04709978
View directory record Official record
Conditions
Pneumonia, Aspiration Pneumonia
Interventions
Videofluoroscopic Swallowing Study, Nuclear medicine pulmonary aspiration study, TOR-BSST and 3 oz Water Swallow, Sputum Culture, MeMed BV®, Lung Ultrasound, Respiratory Function Tests
Diagnostic Test
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
60 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 15, 2023 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Observational

Comparing Expectorated and Induced Sputum and Pharyngeal Swabs for Cultures, AFB Smears, and Cytokines in Pulmonary Nontuberculous Mycobacterial Infection

NCT01150721
View directory record Official record
Conditions
Mycobacterium Infections, Non-tuberculous
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 80 Years
Enrollment
177 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 29, 2026 · Synced Oct 30, 2026, 3:48 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pulmonary Inflammation and Microbiome Changes With Bariatric Surgery in Obese Asthma

NCT04247971
View directory record Official record
Conditions
Asthma, Obesity
Interventions
Blood draw, Sputum collection, Pulmonary function test
Procedure
Lead sponsor
Duke University
Other
Eligibility
21 Years to 60 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 16, 2023 · Synced Oct 30, 2026, 3:48 PM EDT