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our May 2024

Dose-Rsponse Assessment
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TERA and ARA make the news!

TERA and the Alliance for Risk Assessment (ARA) were mentioned in the article,
“Risk Assessment Coalition Holds Workshop Critiquing EPA’s PFOA Value”
on the InsideEPA.com website.

Dr. Michael Dourson worked with multiple agencies, researchers, and law firms to put together the ARA workshop; Beyond Science and Decisions: Workshop XIV in Washington, DC October 17, 18 and 19, 2023. The workshop saw over 200 in attendance onsite and online and was the first of its kind on PFAS/PFOA. Several presenters from around the world discussed PFAS/PFOA risk levels.  Dr. Dourson gave a presentation regarding the EPA’s current stance on PFAS/PFOA in relation to Health Canada and ATSDR. Given the EPA’s stance, several law firms discussed why industry might consider litigation against the EPA and explained that billions of dollars may be spent on the legal issues associated with PFAS/PFOA and the EPA.

The collation of researchers and scientists that Dr. Dourson and his advisory groups brought together on this issue is an example of TERA’s commitment to nonbiased science. If you would like to speak to one of our scientists on this or other risk assessment issues. Contact us at 513.542.7475
or email Dr. Dourson at dourson@tera.org



International collaboration confirmed the earlier findings of TERA scientists
The finding that the human half life of PFOA (a measure of the time it remains in our body) appears to lie in the range of 0.5 to 1.5 years.
Click Here to read the finding on ScienceDirect



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BootCamp 5/06 - 5/10, /2024 More info: Click Here


International Toxicity Estimates for Riskr

ITER is a Internet database of chronic human health risk values and cancer classifications for over 700 chemicals of environmental concern from multiple organizations worldwide...Learn more





Engaging outside experts to review research and risk assessments/methods can help insure high quality and scientifically-defensible work products and results. Government agencies, NGOs and industry recognize the value added by expert peer review and TERA is a world leader in providing independent expert review for all types of toxicology research, risk assessment documents and activities.


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This week-long, intensive, hands-on training in hazard characterization and dose-response assessment for human health risk assessments is based on our popular chemical risk assessment training sessions developed and presented to various audiences over the past decade.  It is designed to provide systematic training in current assessment practices as well as in the latest research and methods in human health chemical risk assessments ...Learn more



TERA scientists combine a practitioner's knowledge of the research, issues, and pitfalls involved in the development of human health risk assessments with cutting-edge toxicology, research, and expertise to develop state-of-the-science assessments.  Our research, aimed at improving risk assessment methods in the areas of dose-response and mode of action, further enhances our analyses.  In solving risk problems for a diverse array of government and private sponsors, we apply a collaborative philosophy that emphasizes partnership building, allowing us to expand our pool of expertise....Learn More





Alliance for Risk Assessment (ARA)


TERA is a founding member of the Alliance for Risk Assessment, a collaborative effort of organizations dedicated to supporting public health protection by improving the process, research, and efficiency of risk assessment. Given a limited supply of time, resources, and know-how research, public health protection is an effort that requires cooperation, organization, and prioritization. The Alliance help focus these applied research resources to increase the output of risk values... Learn more




State Hazard Evaluation & Lending Program

The StateHELP (Hazard Evaluation Lending Program) allows states to receive up to 10 hours annually of technical support and toxicology research from experienced risk assessment scientists free of charge... Learn more






Annual Reports & Funding

1996- Present

TERA holds our scientific neutrality in highest regard. As a non-profit 501(C)3, TERA provides our toxicology research and risk assessment activities, and annual funding sources to the public.



The Independent Charities Seal of Excellence is awarded to the members of Independent Charities of America and Local Independent Charities of America that have, upon rigorous independent review, been able to certify, document, and demonstrate on an annual basis that they meet the highest standards of public accountability, program effectiveness, and cost effectiveness.  These standards include those required by the US Government for inclusion in the Combined Federal Campaign, probably the most exclusive fund drive in the world.  Of the 1,000,000 charities operating in the United States today, it is estimated that fewer than 50,000, or 5 percent, meet or exceed these standards, and, of those, fewer than 2,000 have been awarded this Seal.


Dose - Response Assessment Boot Camp is a registered trademark of Toxicology Excellence for Risk Assessment (TERA).


ITER, ITER-International Toxicity Estimates for Risk, and International Toxicity Estimates for Risk are registered trademarks of Toxicology Excellence for Risk Assessment (TERA).