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Sortition® is online clinical trial randomisation software developed by the Clinical Trials Unit in the Nuffield Department of Primary Care Health Sciences.

Sortition® is:

  • A stand-alone online randomisation system designed for use by GPs/Nurses at research sites 
  • Accessible via the internet to users with a valid login account
  • Suitable for open and blind studies (wide range of powerful randomisation/minimisation methods)
  • Currently used in a growing number of trials.


  • User access arranged on a hierarchical basis and can be restricted by role, study and site
  • Utilises secure communication protocol (HTTPS) 
  • Password and optionally, user IP address restricted access
  • Access can be paused or suspended at any time by the co-ordinating centre.
Sortition® is built from three core system tools: Study BuilderStudy Administration and Pack Management. Control remains firmly in the hands of the user regardless of their experience or location.


The Study Builder is an online interface which allows a new study to be built and deployed in minutes. This enables multiple randomisation configurations to be deployed and tested, gaining valuable feedback and site training, before recruitment commences.


The Study Administration tool is used to manage studies after they have been deployed and once recruitment has commenced. Sites can be added as they are recruited into a study, users can be created and managed and even external randomisation events, e.g. an emergency randomisation, can be added retrospectively.


The Sortition® Pack Management tool controls medication packs used in blind studies. Capabilities include pack ordering, relocating and status updates,managing locations, associating locations with sites and restocking locations.



  • Accessible via the internet
  • Suitable for open & blinded studies
  • Intuitive user-friendly interface

Further information and licensing:

For more information about Sortition® visit Oxford University Innovation Ltd. 

Oxford University Innovation Ltd is a technology transfer company owned by the University of Oxford.

If you are interested in using Sortition® in your research we would like to hear from you.

Contact Oxford University Innovation Ltd.