Hazard quotient

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A hazard quotient is the ratio of the potential exposure to a substance and the level at which no adverse effects are expected. If the Hazard Quotient is calculated to be less than 1, then no adverse health effects are expected as a result of exposure. If the Hazard Quotient is greater than 1, then adverse health effects are possible. The Hazard Quotient cannot be translated to a probability that adverse health effects will occur, and is unlikely to be proportional to risk. It is especially important to note that a Hazard Quotient exceeding 1 does not necessarily mean that adverse effects will occur.[1]


  1. ^ "NATA Glossary of Key Terms". Retrieved 2015-12-03. 

This article is based on material from the public domain U.S. Federal Government document "NATA Glossary of Terms"