New study aims to reduce unnecessary risky procedures for bile duct stones
NCT ID NCT05141916
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at better ways to diagnose bile duct stones, which can be dangerous if missed. Current methods often lead to unnecessary procedures. Researchers will test if changes in liver enzyme levels can improve accuracy. About 2000 adults with suspected stones will take part.
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
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About 2,000 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2019
- Expected to finish
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Jun 2029
An estimate. End dates often move.
- Lead sponsor
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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 patients undergoing ERCP for suspected choledocholithiasis
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Patients with suspected choledocholithiasis, regardless of probability * age 18 years old or older * able to give informed consent to involvement (in the prospective validation phase). Exclusion Criteria: * Unable or unwilling to provide informed consent; * age \< 18 years; * suspected or proven cholangitis; * previous ERCP with sphincterotomy; * prior diagnosis or management of choledocholithiasis; * outpatient status; * out-of-province status (prohibiting full medical record access).
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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University of Calgary
RECRUITINGCalgary, Alberta, T2N 4Z6, Canada
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a muscle-relaxing drug make bile duct stone surgery easier?
- AI assistant could spot hidden liver and pancreas cancers earlier
- Tiny tube tracks bile duct healing after gallstone removal
- New study maps antibiotic resistance in bile duct infections to guide smarter treatment
- 6,000 patients enrolled in major ERCP safety study