An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Endocrine Disruption

Universe of Chemicals for Potential Endocrine Disruptor Screening and Testing

The Universe of Chemicals was developed by the EPA to provide guidance to staff and managers regarding the universe of chemicals for potential endocrine disruptor screening and testing.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.