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New painless urine test could replace surgery for diagnosing blocked urethra

NCT ID NCT07403786

Diagnosis Sponsor: Ankara City Hospital Bilkent Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study is testing a new, non-invasive urine flow test called the Urethral Resistive Index (URI) to diagnose urethral stricture in men. Currently, diagnosis often requires invasive procedures like surgery. The study will involve 60 men (30 with suspected stricture and 30 healthy volunteers) who will provide two urine samples. The goal is to see if this simple test can accurately identify blockages, potentially sparing patients from more invasive tests.

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 provide a simple, non-invasive screening tool for urethral stricture, reducing the need for surgery or other invasive tests.
What could go wrong
This is a small, early-stage study with only 60 participants. The new test may not be accurate enough to replace current diagnostic methods.

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

About 60 people

The number the study aims to enrol. It can still change while the study runs.

Started

Feb 2026

Expected to finish

Jul 2026

An estimate. End dates often move.

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

The study population consists of 60 male participants, aged 18 to 80 years, recruited from the Urology Outpatient Clinic at Ankara Bilkent City Hospital. The population is divided into two distinct groups: a Stricture Group (n=30) comprising patients with suspected urethral stricture whose diagnosis is confirmed intraoperatively during scheduled surgery, and a Control Group (n=30) comprising healthy male volunteers with a similar age distribution and no lower urinary tract symptoms. Participants are selected based on their clinical presentation and willingness to undergo a specialized two-stage uroflowmetry protocol.

Ages

18 to 80 years

Sex

Male participants only

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: * Male participants aged between 18 and 80 years. * For the Stricture Group: Patients scheduled for surgery (urethroplasty or internal urethrotomy) due to suspected urethral stricture, where the diagnosis is confirmed intraoperatively. * For the Control Group: Healthy male volunteers without any lower urinary tract symptoms. * Voluntary signing of the Informed Consent Form. Exclusion Criteria: * Voiding volume less than 150 mL. * Causes of obstruction other than stricture, such as Benign Prostatic Hyperplasia (BPH). * Diagnosis of neurogenic bladder dysfunction or a history of neurological disease affecting bladder function. * Presence of severe comorbidities.

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Conditions

The condition(s) this trial relates to.

urethral stricture

As listed by the trial registrant

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

Urethral stricture

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Ankara Bilkent City Hospital

    RECRUITING

    Ankara, Universiteler, 06800, Turkey (Türkiye)

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