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Active, not recruitingNCT04359602Updated Oct 6, 2026

COVID-19 Recovered Volunteer Research Participant Pool Registry

An observational study in Recovered From COVID-19, sponsored by University of California, Los Angeles. Active, not recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-06.

Sponsored by University of California, Los Angeles · Observational

Study type
Observational
Model
Case-only
Time perspective
Prospective
Enrollment
5,090
Ages
18 Years and older
Sex
All
01

Study summary

This is a prospective observational registry of COVID-19 recovered patients who are no longer symptomatic. This Registry is intended to serve as a pool of individuals that can participate in studies associated with serological testing, characterization of immunity and immune response, vaccine development, and convalescent plasma donors.

02

Conditions studied

  • Recovered From COVID-19
03

In context

Lead sponsor

University of California, Los Angeles is the lead sponsor of 1,142 studies on the registry; 192 are open to participants now.

Of its 91 completed or terminated interventional studies of FDA-regulated products, 66 (73%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

People volunteering to share their information to become part of this research pool of COVID-19 recovered individuals will complete an online survey.

Eligibility criteria

Inclusion Criteria:

  • All patients seen the in emergency room, admitted patients, or seen in outpatient clinics that are:

    • Tested Positive for COVID-19 and recovered
    • Suspected to have COVID 19 and validated with serological testing
    • Suspected to have COVID 19 by symptoms, clinical course, and laboratory testing ruling out other respiratory viral disease
05

Study design

Observational model
Case-only
Time perspective
Prospective
Enrollment
5,090 participants (actual)
Target follow-up
20 Years
Patient registry
Yes
06

What researchers measure

Primary outcomes

  1. Serological testing of COVID patients

    Testing may be done on registry participants who agree to participate future studies

    Time frame: Up to 20 years

  2. Immune response

    Testing may be done on registry participants who agree to participate future studies

    Time frame: Up to 20 years

07

Study locations

1 site
  • Ronald Reagan UCLA Medical Center
    Los Angeles, California 90095, United States
08

References and documents

Individual participant data

Plan to share: Yes

No publications or documents are linked to this record.

09

Updates

1 registry update since Sep 25, 2026
Minor edits
Nothing that changes what the study is or who can join. Edited: verification date
1 update, last Oct 6, 2026
Show all 1 update
  1. Oct 6, 2026
    Minor edits only
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT04359602
Lead sponsor
University of California, Los Angeles
Responsible party
Sponsor
First posted
Apr 24, 2020
Start date
Apr 8, 2020
Primary completion
Sep 29, 2021
Completion
Apr 20, 2042 (estimated)
Last update
Oct 6, 2026

Study contacts

Arash Naeim, MD, PhD
principal investigator · University of California, Los Angeles

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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