Total underwater colonoscopy for better colorectal cancer screening

Total Underwater Colonoscopy (TUC) for Improved Colorectal Cancer Screening: A Randomized Controlled Trial

Not applicable Interventional Vestre Viken Hospital Trust · NCT06333392

This study is testing if total underwater colonoscopy can find more hard-to-detect lesions during colorectal cancer screening in people who need a colonoscopy after a positive stool test.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment1070 (estimated)
Ages55 Years to 60 Years
SexAll
SponsorVestre Viken Hospital Trust Academic / other
Locations5 sites (Drammen and 4 other locations)
Trial IDNCT06333392 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the effectiveness of total underwater colonoscopy compared to conventional colonoscopy for colorectal cancer screening. It focuses on improving the detection rates of serrated lesions, which are often missed during standard procedures. Participants will be individuals referred for colonoscopy after a positive fecal immunochemical test (FIT). The study aims to determine if the underwater technique can enhance the identification and resection of these lesions, potentially reducing the risk of colorectal cancer.

Who should consider this trial

Good fit: Ideal candidates are individuals referred for colonoscopy following a positive FIT screening.

Not a fit: Patients with a colorectal cancer diagnosis within the last 10 years will not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to earlier detection and treatment of colorectal cancer, improving patient outcomes.

How similar studies have performed: Previous studies have shown promising results with similar underwater colonoscopy techniques, indicating potential for improved outcomes.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* All individuals referred to colonoscopy after a positive FIT screening at the participating screening centres

Exclusion Criteria:

* Individuals with a CRC diagnosis within the last 10 years.

Where this trial is running

Drammen and 4 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Colorectal NeoplasiaScreening ColonoscopyColorectal CancerColorectal Cancer ScreeningVasovagal Reactioncolorectal cancer screeningscreening colonoscopyunderwater colonoscopy
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.