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ClinicalTrials.gov public records Last synced Oct 20, 2026, 2:28 PM EDT

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Showing 1–24 of 63 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Convalescent plasma Clear all
Completed No phase listed Observational

An Observational Cohort Trial of Outcomes and Antibody Responses Following Treatment With COVID19 Convalescent Plasma in Hospitalized COVID-19 Patients

NCT04471051
View directory record Official record
Conditions
Covid19
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
255 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
6
States / cities
Aurora, Colorado • Colorado Springs, Colorado • Denver, Colorado + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced Oct 20, 2026, 2:28 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Analysis of Coronavirus Disease 19 (COVID-19) Convalescent Plasma

NCT04497779
View directory record Official record
Conditions
Asymptomatic COVID-19 Infection Laboratory-Confirmed, Symptomatic COVID-19 Infection Laboratory-Confirmed
Interventions
Biospecimen Collection, Diagnostic Laboratory Biomarker Analysis, Electronic Health Record Review, Questionnaire Administration
Procedure · Other
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Dec 5, 2025 · Synced Oct 20, 2026, 2:28 PM EDT
Completed No phase listed Observational

Plasma Collection From Convalescent and/or Immunized Donors for the Treatment of COVID-19

NCT04360278
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years and older
Enrollment
258 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 21, 2024 · Synced Oct 20, 2026, 2:28 PM EDT
Terminated Phase 2 Interventional Results available

Use of Convalescent Plasma for COVID-19

NCT04408040
View directory record Official record
Conditions
COVID
Interventions
Convalescent Plasma
Biological
Lead sponsor
Northside Hospital, Inc.
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 14, 2022 · Synced Oct 20, 2026, 2:28 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 2, 2023 · Synced Oct 20, 2026, 2:28 PM EDT
Completed Phase 1 Interventional Results available

Human Convalescent Plasma for High Risk Children Exposed or Infected With SARS-CoV-2 (COVID-19)

NCT04377672
View directory record Official record
Conditions
SARS-CoV-2 Infection
Interventions
Anti-SARS-CoV-2 Human Convalescent Plasma
Biological
Lead sponsor
Johns Hopkins University
Other
Eligibility
1 Month to 18 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 27, 2024 · Synced Oct 20, 2026, 2:28 PM EDT
Completed Early Phase 1 Interventional

CoVID-19 Plasma in Treatment of COVID-19 Patients

NCT04355897
View directory record Official record
Conditions
COVID 19
Interventions
Convalescent COVID 19 Plasma
Biological
Lead sponsor
The Christ Hospital
Other
Eligibility
18 Years to 80 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
2
States / cities
Cincinnati, Ohio • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 5, 2024 · Synced Oct 20, 2026, 2:28 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 7, 2022 · Synced Oct 20, 2026, 2:28 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 10, 2021 · Synced Oct 20, 2026, 2:28 PM EDT
Completed Early Phase 1 Interventional Results available

COVID-19 Convalescent Plasma

NCT04340050
View directory record Official record
Conditions
Coronavirus
Interventions
anti-SARS-CoV-2 convalescent plasma
Biological
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Oct 20, 2026, 2:28 PM EDT
Terminated Phase 3 Interventional Results available

CONvalescent Plasma for Hospitalized Adults With COVID-19 Respiratory Illness (CONCOR-1)

NCT04348656
View directory record Official record
Conditions
COVID-19
Interventions
Convalescent plasma
Biological
Lead sponsor
Hamilton Health Sciences Corporation
Other
Eligibility
16 Years and older
Enrollment
940 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
3
States / cities
Brooklyn, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 3, 2022 · Synced Oct 20, 2026, 2:28 PM EDT
No Longer Available No phase listed Expanded access

Treatment Of CORONAVIRUS DISEASE 2019 (COVID-19) With Anti-Sars-CoV-2 Convalescent Plasma (ASCoV2CP)

NCT04360486
View directory record Official record
Conditions
Severe Acute Respiratory Syndrome Coronavirus 2
Interventions
Anti-Sars-CoV-2 Convalescent Plasma
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
Not listed
U.S. locations
26
States / cities
Oceanside, California • San Diego, California • Fort Carson, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated May 6, 2023 · Synced Oct 20, 2026, 2:28 PM EDT
Completed Not applicable Interventional Results available

Rapid SARS-CoV-2 IgG Antibody Testing in High Risk Healthcare Workers

NCT04334876
View directory record Official record
Conditions
SARS-CoV-2
Interventions
SARS-CoV-2 IgG Antibody Testing Kit
Diagnostic Test
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
571 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 26, 2023 · Synced Oct 20, 2026, 2:28 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 9, 2022 · Synced Oct 20, 2026, 2:28 PM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety of Convalescent Plasma in Treating COVID-19 Hospitalized Patients

NCT04354831
View directory record Official record
Conditions
COVID-19
Interventions
anti-SARS-CoV-2 convalescent plasma
Biological
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 10, 2024 · Synced Oct 20, 2026, 2:28 PM EDT
Completed Phase 2 Interventional Results available

Study of Efficacy and Safety of MAS825 in Patients With COVID-19

NCT04382651
View directory record Official record
Conditions
COVID-19 Pneumonia, Impaired Respiratory Function
Interventions
MAS825, Placebo, Standard of Care (SoC)
Drug · Other
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
21
States / cities
Chula Vista, California • Glendale, California • Irvine, California + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 10, 2022 · Synced Oct 20, 2026, 2:28 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Collection of SARS CoV-2 (COVID-19) Virus Secretions and Serum for Countermeasure Development

NCT04956445
View directory record Official record
Conditions
Covid19
Interventions
Not listed
Lead sponsor
Tulane University
Other
Eligibility
6 Months to 120 Years
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
2
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Oct 20, 2026, 2:28 PM EDT
Recruiting Phase 2 Interventional

Convalescent Plasma as a Possible Treatment for COVID-19

NCT04442191
View directory record Official record
Conditions
COVID-19
Interventions
Convalescent plasma, Placebo
Biological
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
40 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 22, 2020 · Synced Oct 20, 2026, 2:28 PM EDT
Completed Phase 2Phase 3 Interventional

The Fleming [FMTVDM] Directed CoVid-19 Treatment Protocol

NCT04349410
View directory record Official record
Conditions
CoVid 19 Positive
Interventions
Hydroxychloroquine, Azithromycin, Hydroxychloroquine, Doxycycline, Hydroxychloroquine, Clindamycin, Hydroxychloroquine, Clindamycin, Primaquine - low dose., Hydroxychloroquine, Clindamycin, Primaquine - high dose., Remdesivir, Tocilizumab, Methylprednisolone, Interferon-Alpha2B, Losartan, Convalescent Serum
Drug
Lead sponsor
The Camelot Foundation
Other
Eligibility
Not listed
Enrollment
1,800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 12, 2020 · Synced Oct 20, 2026, 2:28 PM EDT
Withdrawn Phase 3 Interventional Accepts healthy volunteers

Phase 3 Open-Label Controlled Trial of Convalescent Plasma in Early COVID-19 Infection

NCT06084351
View directory record Official record
Conditions
Covid19
Interventions
Convalescent Plasma, Standard of Care
Drug · Other
Lead sponsor
Larkin Community Hospital
Other
Eligibility
40 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
South Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 16, 2023 · Synced Oct 20, 2026, 2:28 PM EDT
Terminated Phase 2 Interventional Results available

Convalescent Plasma as Treatment for Hospitalized Subjects With COVID-19 Infection

NCT04343755
View directory record Official record
Conditions
COVID-19
Interventions
Convalescent Plasma
Biological
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 18, 2023 · Synced Oct 20, 2026, 2:28 PM EDT
Terminated Phase 2 Interventional Results available

Convalescent Plasma in the Early Treatment of High-Risk Patients With SARS-CoV-2 (COVID-19) Infection

NCT04513158
View directory record Official record
Conditions
Covid19
Interventions
Convalescent Plasma
Biological
Lead sponsor
Joseph M. Flynn, D.O., MPH
Other
Eligibility
18 Years to 99 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
4
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Oct 24, 2024 · Synced Oct 20, 2026, 2:28 PM EDT
Withdrawn Phase 1 Interventional

Intermediate IND Severe Illness COVID-19 CP

NCT04411602
View directory record Official record
Conditions
Severe Acute Respiratory Syndrome, COVID
Interventions
SARS-CoV-2 plasma
Drug
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
3
States / cities
Novi, Michigan • Southfield, Michigan • Warren, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 19, 2025 · Synced Oct 20, 2026, 2:28 PM EDT