Dutch Trial Register

The Netherlands’ research portal lets visitors search medical research and register, submit, or manage studies involving human participants.

onderzoekmetmensen.nl/en
Dutch Trial Register homepage screenshot

About Dutch Trial Register

The site provides the Overview of Medical Research in the Netherlands (OMON), where visitors can search for medical research involving human participants. Professionals can register, submit and manage studies through the Research Portal.

OMON includes records from the former National Trial Register (NTR), ToetsingOnline, the Research Portal and the public portal of CTIS. Former NTR information is available in English only, other information is generally in Dutch and English, and details such as recruitment status may be outdated, so users are asked to confirm current status with the submitting party.

Key features

  • Search for medical trials involving human participants
  • Register research in the Research Portal
  • Submit and manage medical research records
  • Find per-study contacts under 'Contacts'
  • Follow links to CTR studies in CTIS
  • View content in Dutch and English where available
Best for: People searching for medical research in the Netherlands and professionals who register or manage human-participant studies.
Good for
  • Combines records from NTR, ToetsingOnline, Research Portal and CTIS
  • Lists contact details for each study's submitting party
  • Information generally available in Dutch and English
Watch out for
  • Former NTR information is available in English only
  • Details such as recruitment status may be outdated
  • Users must verify current status with the submitting party

Dutch Trial Register at a glance

Type
Website
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Not stated
Language
English
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026

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Dutch Trial Register FAQ

What research sources are included in OMON?
All research from the old National Trial Register, ToetsingOnline, the Research Portal and the public portal of CTIS.
Where can I find contact details for a study?
Under 'Contacts' for each study. For CTR studies, contact details are in the public portal of CTIS via the link under 'Study details'.
Is recruitment status always current?
No. Information may be outdated, so check the current status with the submitting party of the study.
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