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ITER contains data in support of human health risk assessments. It is compiled by Toxicology Excellence for Risk Assessment (TERA) and contains data from CDC/ATSDR, Health Canada, RIVM, U.S. EPA, IARC, NSF International and independent parties offering peer-reviewed risk values. ITER provides comparison charts of international risk assessment information and explains differences in risk values derived by different organizations.

ITER Database

The Toxicology Excellence for Risk Assessment's ITER database can be accessed by clicking on database in the menu or Click Here to search the ITER database. Once on the database page you will have several ways to search the database..

Updates to ITER are made monthly. 


Stay up to date on the latest ITER news..


You will find answers to the most frequently asked questions including the different ways you can view the database.

Terms and Definitions

Browse or search definitions for the terms used on this website.

Risk Methods

View the different methodology used in Cancer, Non-Cancer, and Dose- Response Assessments.

Contact Us

Email and Physical address to contact ITER or TERA.

Check out our published manuscript on ITER

Wullenweber, A. et al. Resources for global risk assessment: The International Toxicity Estimates for Risk (ITER) and Risk Information Exchange (RiskIE) databases. Toxicol. Appl.   Pharmacol.doi:10.1016/j.taap.2007.12.035