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Showing 25–45 of 21 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: olfactory testing Clear all
Completed Not applicable Interventional

Physiological Investigations of Movement Disorders

NCT01019343
View directory record Official record
Conditions
Parkinson's Disease, Tourette's Syndrome, Tic Disorders, Dystonia, Movement Disorders
Interventions
Transcranial Direct Current Stimulation (tDCS), Eye-tracking Device, Pulsed vibrator, Gait Trainer Treadmill (GTT), Standard psychiatric scales SCID-I, YBOCS and SCI-OBS-lifetime and cognitive scales MMSE and MOCA, iMobility, QMAT, Treadmill Test, Arm Intellistretch Device, Transcranial Sonography (TCS), Behavioral tasks, TMS single/paired pulse, MEG, EEG, MRI techniques, Peripheral Nerve Stimulation, EMG, Trancutaneous spinal direct current stimulation (tsDCS)
Procedure · Device · Other + 1 more
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years and older
Enrollment
1,273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Sep 6, 2026, 6:32 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Biomarkers in Neural Disorders

NCT02761707
View directory record Official record
Conditions
Parkinson's Disease, Alzheimer's Disease, Progressive Supranuclear Palsy, Essential Tremor, Multiple System Atrophy, Drug Induced Parkinson's Disease, Diffuse Lewy Body Disease, Myasthenia Gravis, Spinal Cord Injuries
Interventions
Electrical Brainstem Responses, Olfactory Tests, Visual Deprivation, Peripheral Nerve Stimulation
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 80 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 17, 2019 · Synced Sep 6, 2026, 6:32 PM EDT
Completed No phase listed Observational

Clinical Validation of the LumiraDx SARS-CoV-2 & Flu A/B Combo Test

NCT05787444
View directory record Official record
Conditions
SARS-CoV-2, Influenza A, Influenza B, Asymptomatic COVID-19
Interventions
LumiraDx SARS-CoV-2 & Flu A/B
Diagnostic Test
Lead sponsor
LumiraDx UK Limited
Industry
Eligibility
2 Years and older
Enrollment
1,081 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Cullman, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Sep 6, 2026, 6:32 PM EDT
Completed Phase 4 Interventional Results available

Olfactory Deficits in MCI as Predictor of Improved Cognition on Donepezil

NCT01845636
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Donepezil, Atropine
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
55 Years to 95 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 8, 2018 · Synced Sep 6, 2026, 6:32 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Absorbance Study - Clinical Trial of the Absorbance of Nano Liquid D3

NCT04885803
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Softgel Vitamin D3, Nano Liquid Vitamin D3, 25(OH)D Blood Serum Test, Placebo Control
Dietary Supplement · Diagnostic Test · Other
Lead sponsor
Inspired Life Medical, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Le Sueur, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 23, 2021 · Synced Sep 6, 2026, 6:32 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

A Study Evaluating Potential Screening Tools for Detecting Parkinson Disease

NCT00387075
View directory record Official record
Conditions
Parkinson Disease
Interventions
[123I]β-CIT and SPECT imaging, [123I]β-CIT
Procedure · Drug
Lead sponsor
Institute for Neurodegenerative Disorders
Other
Eligibility
50 Years and older
Enrollment
3,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2023
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 28, 2022 · Synced Sep 6, 2026, 6:32 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

GBPDC: Gut-Brain in PD Consortium Master Protocol

NCT07567794
View directory record Official record
Conditions
Parkinson Disease (PD), PARKINSON DISEASE (Disorder), Gut Microbiome, Gut Microbiota, Prodromal Parkinsons Disease
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
21 Years to 80 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
7
States / cities
Stanford, California • Chicago, Illinois • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 6, 2026, 6:32 PM EDT
Recruiting Not applicable Interventional

Post COVID-19 Syndrome Treatment With Variable Pulse Transcranial Magnetic Stimulation

NCT06865222
View directory record Official record
Conditions
Post COVID-19 Condition
Interventions
Electromagnetic Brain Pulsing Variable Pulse Protocol (EMBP) - 2 weeks, Electromagnetic Brain Pulsing Variable Pulse Protocol (EMBP) - 4 weeks
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 6, 2026, 6:32 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Digital Accessible Remote Olfactory Mediated Health Assessments for Preclinical AD

NCT05881239
View directory record Official record
Conditions
Subjective Cognitive Concerns, Mild Cognitive Impairment, Mild Behavioral Impairment, Healthy Aging
Interventions
AROMHA Brain Health Test
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 100 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Sep 6, 2026, 6:32 PM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

Olfactory Dysfunction in Aging Adults

NCT07660887
View directory record Official record
Conditions
Olfactory Dysfunction
Interventions
Clinical and Biomarker Assessments
Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
50 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2032
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Sep 6, 2026, 6:32 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Stellate Ganglion Block for COVID-19-Induced Olfactory Dysfunction

NCT05445921
View directory record Official record
Conditions
Anosmia, Hyposmia, Parosmia, Olfactory Disorder
Interventions
Stellate Ganglion Block
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Sep 6, 2026, 6:32 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Treatment of Pediatric Patients That Lost Sense of Smell Due to COVID-19

NCT04964414
View directory record Official record
Conditions
Dysosmia, Anosmia, Covid19
Interventions
Smell Retraining, Budesonide
Other · Drug
Lead sponsor
Amanda Stapleton
Other
Eligibility
6 Years to 21 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 12, 2024 · Synced Sep 6, 2026, 6:32 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Black and African Americans Connections to Parkinson's Disease (BLAAC PD)

NCT06719583
View directory record Official record
Conditions
Parkinson Disease
Interventions
Not listed
Lead sponsor
Michael J. Fox Foundation for Parkinson's Research
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
12
States / cities
Birmingham, Alabama • Gainesville, Florida • Chicago, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 6, 2026, 6:32 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Experiments to Test How and Why the Sense of Smell Differs Between People

NCT00220038
View directory record Official record
Conditions
Specific Anosmias
Interventions
smell tests
Behavioral
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 10, 2012 · Synced Sep 6, 2026, 6:32 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Sensory Tests of Cigarettes for Identification of Flavors in Current Daily Smoking Adults

NCT06816459
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Cigarette smell test, Cigarette Taste Test, Study questionnaires
Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Sep 6, 2026, 6:32 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

ScentAware and OCT in MCI vs HC

NCT06377241
View directory record Official record
Conditions
Alzheimer Disease, Early Onset
Interventions
ScentAware, UPSIT
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
50 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 22, 2025 · Synced Sep 6, 2026, 6:32 PM EDT
Recruiting Not applicable Interventional

Olfactory Biopsies

NCT07021040
View directory record Official record
Conditions
Alzheimer Disease, Smell Loss, Smell Dysfunction
Interventions
olfactory testing, Odor stimulation, Olfactory biopsy
Diagnostic Test · Other · Procedure
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Sep 6, 2026, 6:32 PM EDT
Terminated Not applicable Interventional

Olfactory Training in Improving Sense of Smell After Radiation Therapy in Patients With Paranasal Sinus or Nasopharyngeal Cancer

NCT03049358
View directory record Official record
Conditions
Stage 0 Nasopharyngeal Carcinoma, Stage 0 Paranasal Sinus Cancer, Stage I Nasopharyngeal Carcinoma, Stage I Paranasal Sinus Cancer, Stage II Nasopharyngeal Carcinoma, Stage II Paranasal Sinus Cancer, Stage IIA Nasopharyngeal Carcinoma, Stage IIB Nasopharyngeal Carcinoma, Stage III Nasopharyngeal Carcinoma, Stage III Paranasal Sinus Cancer, Stage IV Nasopharyngeal Carcinoma, Stage IV Paranasal Sinus Cancer, Stage IVA Nasopharyngeal Carcinoma, Stage IVA Paranasal Sinus Cancer, Stage IVB Nasopharyngeal Carcinoma, Stage IVB Paranasal Sinus Cancer, Stage IVC Nasopharyngeal Carcinoma, Stage IVC Paranasal Sinus Cancer
Interventions
Physiologic Testing, Quality-of-Life Assessment, Sham Intervention, Therapeutic Procedure, rose essential oil, lemon essential oil, clove essential oil, eucalyptus essential oil, canola oil placebo
Other · Procedure
Lead sponsor
Stanford University
Other
Eligibility
19 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Sep 6, 2026, 6:32 PM EDT
Completed No phase listed Observational

A Clinical Evaluation of Pine Trees Health Test System Including the Pine Trees Health Reader and COVID-19 Test for Point-of-Care

NCT05107258
View directory record Official record
Conditions
SARS (Severe Acute Respiratory Syndrome), Covid19
Interventions
The Pine Trees Health Test System
Diagnostic Test
Lead sponsor
Pine Trees, Inc.
Industry
Eligibility
6 Years and older
Enrollment
195 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
3
States / cities
Spring Hill, Florida • Statesville, North Carolina • Redmond, Washington
Source: ClinicalTrials.gov public record
Updated Nov 3, 2021 · Synced Sep 6, 2026, 6:32 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Assessing Environmental Factors in Healthcare Facilities in Order to Improve the Experience of Patients, Staff, and the Quality of Imaging Procedures

NCT03456895
View directory record Official record
Conditions
Healthcare Facility Environment - Imaging
Interventions
Light perception, Sound perception, Smell perception, Vibration perception, Voice activation
Other
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2024
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 17, 2024 · Synced Sep 6, 2026, 6:32 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

A Comparison of Tolterodine and Placebo Treatments on Nocturnal Frequency and Sleep Quality in Women After Menopause.

NCT00323635
View directory record Official record
Conditions
Urinary Incontinence
Interventions
tolterodine
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
45 Years to 65 Years · Female only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 28, 2018 · Synced Sep 6, 2026, 6:32 PM EDT