Why Register?

If you are approved as a registered user on the PTSA website, you will be allowed to submit requests for biospecimens and/or data related to the Alpha-Tocopherol, Beta-Carotene Cancer Prevention (ATBC) Study.

If you submit requests via the PTSA website, you may view the status of your submission at any time. You may also access your request to add comments, upload attachments, view progress and complete progress reports.