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Can a finger-prick test improve TB screening in hard-to-reach areas?

NCT ID NCT05526885

Diagnosis Sponsor: Klaus Reither 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested two ways to find tuberculosis (TB) in communities in Lesotho and South Africa. One method used a chest X-ray analyzed by computer software (CAD4TB). The other added a finger-prick blood test (CRP) for people whose X-ray results were unclear. Both methods were followed by a confirmatory test. The goal was to see if adding the blood test finds as many TB cases while being more cost-effective. About 20,000 adults took part.

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 approach could make TB screening cheaper and more accessible in high-burden communities, helping find more cases earlier.
What could go wrong
The trial is completed but results are not yet widely reported. The approach may not be as effective in other settings or populations.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

20,000 people

The number who actually took part.

Started

Sep 2022

Finished

Dec 2024

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.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Willing and able to provide signed written consent or witnessed oral consent in the case of illiteracy, prior to undertaking any study-related procedure * Adults (≥18 years) Exclusion Criteria: * Any condition for which participation in the study, as judged by the investigator or a designated staff member, could compromise the well-being of the subject or prevent, limit or confound protocol specified assessments * Seriously ill person who needs immediate medical care * Current anti-TB treatment (preventive TB treatment permitted) * Lesotho only: Pregnancy (self-reported)

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Conditions

The condition(s) this trial relates to.

tuberculosis

As listed by the trial registrant

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

Tuberculosis

Contacts and locations

Locations

  • Human Sciences Research Council

    Pietermaritzburg, KwaZulu-Natal, South Africa

  • SolidarMed

    Maseru, Lesotho

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