Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 25, 2026, 4:57 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 76 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Covid-19 Antibody Test Clear all
Completed No phase listed Observational Accepts healthy volunteers Results available

RADx-UP CDCC Rapid Research Pilot Program "Culturally-relevant Community Connections (C3) to Increase COVID-19 Testing

NCT05918952
View directory record Official record
Conditions
COVID-19
Interventions
Covid-19 Antibody Test, Short Clip videos
Diagnostic Test · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
327 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Greensboro, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 1, 2026 · Synced Sep 25, 2026, 4:57 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Polk COVID-19 and Flu Response

NCT04682132
View directory record Official record
Conditions
Covid19
Interventions
COVID-19 antigen and antibody tests, and influenza rapid test
Diagnostic Test
Lead sponsor
Polk County Fire Rescue
Government
Eligibility
18 Years and older
Enrollment
686 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Bartow, Florida
Source: ClinicalTrials.gov public record
Updated Apr 20, 2021 · Synced Sep 25, 2026, 4:57 PM EDT
Terminated Phase 2 Interventional Results available

ANTIBODY-LEVEL BASED ANALYSIS OF COVID-19 CONVALESCENT SERUM (ABACCuS)

NCT04432272
View directory record Official record
Conditions
COVID-19, Severe Acute Respiratory Syndrome (SARS), Coronavirus Infections
Interventions
COVID-19 convalescent plasma
Biological
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 8, 2022 · Synced Sep 25, 2026, 4:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

TekiTrust Tests to Determine the Level of SARS-COV-2/COVID-19 Neutralizing Antibodies in the Blood

NCT05338762
View directory record Official record
Conditions
SARS-CoV2 Infection
Interventions
Not listed
Lead sponsor
MiCo BioMed Co., Ltd.
Industry
Eligibility
18 Years and older
Enrollment
218 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
5
States / cities
Starkville, Mississippi • Englewood Cliffs, New Jersey • Cincinnati, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 10, 2022 · Synced Sep 25, 2026, 4:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Collection of Anti-SARS-CoV-2 Immune Plasma

NCT04344977
View directory record Official record
Conditions
Coronavirus Disease 2019 (COVID-19)
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
151 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
3
States / cities
Torrance, California • Miami, Florida • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 4, 2021 · Synced Sep 25, 2026, 4:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Humoral and T-Cell Responses to COVID-19 Vaccination in Multiple Sclerosis Patients Treated With Ocrelizumab Treated With Ocrelizumab or Natalizumab

NCT04837651
View directory record Official record
Conditions
Multiple Sclerosis, Demyelinating Autoimmune Diseases, CNS, Autoimmune Diseases of the Nervous System, Nervous System Diseases, Demyelinating Diseases, Autoimmune Diseases, Immune System Diseases, Pathologic Processes
Interventions
Elecsys semi-quantitative Anti-SARS-CoV-2 antibody test, T-Detect COVID T-cell blood test
Device
Lead sponsor
Dragonfly Research, LLC
Other
Eligibility
18 Years to 55 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Wellesley, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 1, 2021 · Synced Sep 25, 2026, 4:57 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Maternal Newborn Health Registry

NCT01073475
View directory record Official record
Conditions
Pregnancy Outcome Trends in Low-resource Geographic Areas
Interventions
There is no intervention associated with the parent MNHR study. For the MNHR COVID sub-study, participants will be asked to provide a blood specimen at or near delivery.
Other
Lead sponsor
NICHD Global Network for Women's and Children's Health
Network
Eligibility
Not listed
Enrollment
950,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2030
U.S. locations
8
States / cities
Birmingham, Alabama • Aurora, Colorado • Indianapolis, Indiana + 5 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Sep 25, 2026, 4:57 PM EDT
Completed No phase listed Observational

ScreenNC, a Study to Determine the Number of Asymptomatic Individuals Who Have Antibodies to the Virus That Causes COVID-19

NCT04367740
View directory record Official record
Conditions
Asymptomatic Condition, Infection Viral, Coronavirus Infections, Severe Acute Respiratory Syndrome Coronavirus 2, Coronaviridae Infections, RNA Virus Infections, Virus Diseases, Communicable Disease
Interventions
To assess for development of IgG antibodies against SARS-CoV2
Diagnostic Test
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 99 Years
Enrollment
6,313 participants
Timeline
2020 – 2022
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 8, 2023 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

NOWDx Test for the Detection of Antibodies to COVID-19

NCT04690413
View directory record Official record
Conditions
COVID-19, SARS-CoV-2, Coronavirus
Interventions
NOWDx COVID-19 Test
Device
Lead sponsor
NOWDiagnostics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
129 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
3
States / cities
Tucson, Arizona • West Palm Beach, Florida • Jackson, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 29, 2024 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

CATCH-UP Vaccines: Engaged Approaches to Testing in Community/Healthcare Settings for the Underserved (COVID-19)

NCT05236270
View directory record Official record
Conditions
COVID-19, Vaccine Refusal
Interventions
Text Message, Motivational Interviewing, Electronic Educational Message with Tailored Questions/Prompts
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 100 Years
Enrollment
312 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Sep 25, 2026, 4:57 PM EDT
Not listed No phase listed Observational

Change in Antibody Levels Following SARS-CoV-2 (Covid-19) Vaccinations

NCT04944095
View directory record Official record
Conditions
Covid-19, Subjects Vaccinated Against Covid-19
Interventions
Change in SARS-CoV-2 Antibody Levels
Other
Lead sponsor
Dr. Sidney J. Stohs
Other
Eligibility
55 Years and older
Enrollment
10,000 participants
Timeline
2021 – 2024
U.S. locations
1
States / cities
Southlake, Texas
Source: ClinicalTrials.gov public record
Updated Aug 28, 2022 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 2 Interventional Results available

Convalescent Plasma to Limit SARS-CoV-2 Associated Complications

NCT04373460
View directory record Official record
Conditions
SARS-CoV 2
Interventions
SARS-CoV-2 convalescent plasma, Plasma from a volunteer donor
Biological
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
1,225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
29
States / cities
Birmingham, Alabama • Chinle, Arizona • Phoenix, Arizona + 24 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2023 · Synced Sep 25, 2026, 4:57 PM EDT
Completed No phase listed Observational

Research & Evaluation of LumiraDx SARS-CoV-2 (COVID-19) Point of Care Ab Test

NCT04597047
View directory record Official record
Conditions
Covid19
Interventions
Capillary Collection & Testing, Venous Draw & Testing
Diagnostic Test
Lead sponsor
LumiraDx UK Limited
Industry
Eligibility
2 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
4
States / cities
Tucson, Arizona • Northglenn, Colorado • Wichita, Kansas + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Safety, Testing/Transmission, and Outcomes in Pregnancies With COVID-19

NCT04718220
View directory record Official record
Conditions
Covid19, Pregnancy Related, Maternal Complication of Pregnancy, Coronavirus, Neonatal Infection, Prenatal Stress, Preterm Birth
Interventions
Antibody testing for SARS-CoV-2 IgG, Testing for SARS-CoV-2 RNA, Testing for SARS-CoV-2 IgM/IgG
Diagnostic Test
Lead sponsor
Washington University School of Medicine
Other
Eligibility
Female only
Enrollment
448 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 2, 2025 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Not applicable Interventional Results available

Use of Behavioral Economics in Repeat SARS-CoV-2 (COVID-19) Antibody Testing in Disadvantaged Communities

NCT04901624
View directory record Official record
Conditions
SARS-CoV-2
Interventions
Family Risk Messaging, Personal Risk Messaging, Loss Protection, Lottery Incentive
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
5 Years and older
Enrollment
2,164 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 Aug 13, 2024 · Synced Sep 25, 2026, 4:57 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Point of Care Evaluation of Novir 2019-nCoV Immunoglobulin G/ Immunoglobulin M (IgG/IgM) Antibody Test (Collodial Gold)

NCT04902911
View directory record Official record
Conditions
Covid19
Interventions
COVID-19 SARS-CoV IgG/IgM antibody rapid test
Device
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
21 Years and older
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Wauwatosa, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 7, 2024 · Synced Sep 25, 2026, 4:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

COVID-19 and Obstetric Transmission

NCT04418557
View directory record Official record
Conditions
COVID, Pregnancy Complications
Interventions
RT-PCR and antibody testing
Diagnostic Test
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 21, 2022 · Synced Sep 25, 2026, 4:57 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

NOWDx Test for the Detection of Antibodies to COVID-19 in Lay Persons

NCT04799392
View directory record Official record
Conditions
COVID-19, SARS-CoV-2, Coronavirus
Interventions
NOWDx COVID-19 Test
Device
Lead sponsor
NOWDiagnostics, Inc.
Industry
Eligibility
2 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
5
States / cities
Fayetteville, Arkansas • Anoka, Minnesota • Nixa, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Sep 25, 2026, 4:57 PM EDT
Active, not recruiting Not applicable Interventional

Comparison of Nasopharyngeal Swab v. Nasopharyngeal Saline Wash or Saliva Collection in Testing for Respiratory Viruses

NCT05864118
View directory record Official record
Conditions
Respiratory Tract Infections
Interventions
Respiratory pathogen panel PCR test, COVID-19 antibody test
Diagnostic Test
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Sep 25, 2026, 4:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Prevalence of COVID-19 Antibodies Kingman AZ

NCT04533360
View directory record Official record
Conditions
Covid19
Interventions
VITROS Anti-SARS-CoV-2 IgG test
Diagnostic Test
Lead sponsor
Kingman Regional Medical Center
Other
Eligibility
18 Years and older
Enrollment
566 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Kingman, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 30, 2022 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Culturally-Targeted COVID-19 Communication and SARS-CoV-2 Antibody Testing Evaluation and Uptake

NCT04957082
View directory record Official record
Conditions
SARS-CoV2 Infection
Interventions
Culturally Targeted SARS-CoV-2 Communication, General SARS-CoV-2 Communication
Behavioral
Lead sponsor
Michigan State University
Other
Eligibility
18 Years and older
Enrollment
666 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Flint, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 27, 2024 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Not applicable Interventional

COVID-19 Plasma Collection

NCT04344015
View directory record Official record
Conditions
COVID-19
Interventions
Plasma Donation
Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
206 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 9, 2021 · Synced Sep 25, 2026, 4:57 PM EDT
Completed Phase 2 Interventional Results available

Effects of COVID-19 Convalescent Plasma (CCP) on Coronavirus-associated Complications in Hospitalized Patients

NCT04421404
View directory record Official record
Conditions
COVID-19, Sars-CoV2
Interventions
COVID-19 Convalescent Plasma (CCP), Placebo
Biological
Lead sponsor
Priscilla Hsue, MD
Other
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
3
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 6, 2022 · Synced Sep 25, 2026, 4:57 PM EDT
Not listed No phase listed Observational

Immune Response Following COVID-19 Vaccination

NCT04736524
View directory record Official record
Conditions
IgM and IgG in Blood
Interventions
Rapid antibody test
Other
Lead sponsor
Texas Cardiac Arrhythmia Research Foundation
Other
Eligibility
16 Years to 85 Years
Enrollment
500 participants
Timeline
2021 – 2022
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Feb 2, 2021 · Synced Sep 25, 2026, 4:57 PM EDT