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NAL Agricultural Thesaurus
U.S. Department of Agriculture

Concept Breadcrumbs

Fields of Study > biochemistry > bioactive properties > toxicity > no observed adverse effect level
Preferred Term:

no observed adverse effect level

Definition:
The highest exposure level at which there are no biologically significant increases in the frequency or severity of adverse effect between the exposed population and its appropriate control; some effects may be produced at this level, but they are not considered adverse or precursors of adverse effects.
Concept Schemes:
NALT Full
Broader Concept:
toxicity
Related Concepts:
Entry Terms:
  • no-observed-effect level
  • no observed effect level
  • NOAEL (no observed adverse effect level)
  • no-observed-adverse-effect level
  • NOEL (no observed effect level)
  • no observable effect concentration
  • NOEC (no observed adverse effect level)
URI:
https://lod.nal.usda.gov/nalt/54939
Download this Concept:
RDF/XMLCreated 2006-01-19, last modified 2017-10-11