May 21, 2022

Reference Resource: Single-Search Access to Clinical Trials Information from 15 Data Providers

This International Clinical Trials Registry Platform Search Portal (ICTRSP) from the World Health Organization provides single-search access to clinical trial registration info from 15 data providers. A mobile interface to the database is also available.

Data Providers Included in the ICTSRP

Data Files Updated Weekly

  • Australian New Zealand Clinical Trials Registry
  • EU Clinical Trials Register (EU-CTR)
Data Files Updated Monthly
  • Brazilian Clinical Trials Registry (ReBec)
  • Chinese Clinical Trial Registry
  • Clinical Trials Registry – India
  • Clinical Research Information Service – Republic of Korea
  • Cuban Public Registry of Clinical Trials
  • German Clinical Trials Register
  • Japan Primary Registries Network
  • Pan African Clinical Trial Registry
  • Sri Lanka Clinical Trials Registry
  • The Netherlands National Trial Register
  • Thai Clinical Trials Register (TCTR)

Results can be downloaded into XML.

Boolean and Truncated Search Terms Can Be Utilized

Direct to Mobile Version of Search Interface

Learn More About the Database

About Gary Price

Gary Price ( is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at, and is currently a contributing editor at Search Engine Land.