TERA, in association with the U.S. Air Force, U.S. EPA, the Perchlorate Study Group (PSG) and others, has helped develop a research program and protocols for studies on ammonium perchlorate that will fill in data gaps that currently exist in the toxicology database. A protocol review panel reviewed the protocols of the initial round of studies before they were initiated. The U.S. Department of Defense and the Perchlorate Study Group are funding these studies.


Several of these studies have been completed and incorporated into a reassessment of the perchlorate RfD by the U.S. EPA in 1999 and 2002.  




TERA is pleased to announce the availability of a recent analysis, prepared in conjunction with two Yale University colleagues (Jonathan Borak and Cheryl Fields), entitled “Iodine-deficient vegetarians: A hypothetical perchlorate-susceptible population?”  Regul Toxicol Pharmacol, in press.


Letter to the editor regarding the NAS perchlorate review as published in Environmental Health Perspectives.


US Environmental Protection Agency adopts the RfD recommended by NAS, February 2005.

National Academy of Sciences releases “Health Implications of Perchlorate Ingestion,”   January 2005, recommending an RfD for perchlorate.


TERA's Quantitative Evaluation of Perchlorate Risk Assessment

  1. TERAs Perchlorate Reference Dose Manuscript (note:  The published version of this paper is available in Regulatory Toxicology and Pharmacology, 39 (2004) 44-65.)
    » Responses to perchlorate manuscript

  2. Comparison of Urinary Iodine concentrations between the Chilean school age children and 6 to 11 year old children in the U.S.

  3. Quantitative Evaluation of Perchlorate Risk Assessment