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Can a simple blood test predict which COVID patients will get worse?

NCT ID NCT04341792

Knowledge-focused Sponsor: University Hospital, Lille Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This completed study from France enrolled 373 people who came to the emergency room with suspected COVID-19. Researchers checked routine blood markers to see if any could predict which patients would later get worse and need intensive care. The goal was to find simple, low-risk tests to help hospitals manage resources during the pandemic.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could help doctors quickly identify which COVID-19 patients are likely to worsen, allowing better use of hospital resources.
What could go wrong
This is an observational study, not a treatment trial. It only looks for patterns in existing data, so it cannot prove that any marker directly causes or prevents worsening.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

373 people

The number who actually took part.

Started

Apr 2020

Finished

Nov 2020

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Adult population presenting to the emergency department during this pandemic period with symptoms suggestive of Covid-19 infection with no other probable diagnosis.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Clinical criteria for suspicion of Covid-19 in an epidemic period * Consultation in the emergency departement * Non-opposition agree Exclusion Criteria: * impairment related to another identified cause than Covid-19, in particular a rapid diagnostic test flu-positive * Severe patient from the outset with transfer to intensive care within 12 hours of admission to the Emergency Department * No social security coverage (beneficiary or entitled person) * Poor understanding of French * Refusal to participate

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Conditions

The condition(s) this trial relates to.

Coronavinae infectious disease COVID-19 viral infectious disease

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Coronavirus COVID-19 Infection viral

Contacts and locations

Locations

  • Hôpital Roger Salengro, CHU Lille

    Lille, 59037, France

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