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Swallow a string to test for stomach bug?

NCT ID NCT06871579

Diagnosis Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) 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 This study
Running, but no longer taking on new participants.
Completed
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Sep 04, 2026 · Updated 4 times

Summary

This study tests a new device called the esophageal string test (EST) to diagnose H. pylori, a stomach bacteria that can cause ulcers and cancer. Participants swallow a capsule with a string inside that collects stomach fluids. Researchers compare the results to standard tests. The study involves 25 adults with persistent H. pylori infection and aims to see if the EST can detect the bacteria and antibiotic resistance genes.

What this could mean

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

Active substance
Esophageal string test (EST) device
What this could lead to
If successful, this could provide a simpler, less invasive way to diagnose H. pylori infection and detect antibiotic resistance.
What could go wrong
This is a very small pilot study (25 people) testing feasibility, not effectiveness. The string test may be less accurate than standard methods or uncomfortable for patients.

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

5 people

The number who actually took part.

Started

Jun 2025

Expected to finish

Jan 2027

An estimate. End dates often move.

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

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

Ages

18 to 99 years

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: In order to be eligible to participate in this study, an individual must meet all of the following criteria: * Aged \>=18 years * Diagnosed with H. pylori infection (by endoscopy, stool antigen, or urea breath testing) * Agreement to adhere to lifestyle considerations throughout study duration * Ability of participant to provide informed consent EXCLUSION CRITERIA: An individual who meets any of the following criteria will be excluded from participation in this study: * Pregnancy or lactation * Use of antibiotics with activity against H. pylori within 4 weeks of enrollment * Inability to swallow pills * Biopsy-proven high grade dysplastic Barrett s esophagus, active peptic ulcer disease, recent (within 4 weeks) upper GI bleed, and/or history of Zollinger Ellison syndrome or gastric bypass surgery

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Conditions

The condition(s) this trial relates to.

Helicobacter pylori infectious disease

As listed by the trial registrant

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

Helicobacter pylori

Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    Bethesda, Maryland, 20892, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.