Welcome!

The Washington State Twin Registry has been approved for human subject participation by the Washington State University Institutional Review Board. All data is stored on a secure internal server, and only Twin Registry staff will have access to your data. Only the Twin Registry team, and no one else, will be able to contact you unless you give your permission.

If you have any questions regarding the Washington State Twin Registry, please don’t hesitate to call us at 1-888-223-0868 ext. 1 or send an email to ws.twinregistry@wsu.edu.


Did you receive an invitation to join the Registry? Click here to find answers to some of our frequently asked questions.