ABC - DEF - GHI - JKL - MNO - PQRS - TUV - WXYZ No Observed Adverse Effect Level
Similar term(s): NOAEL, NOEL (no observed effect level).
Definition:
The highest tested dose of a substance that has been reported to have no
harmful (adverse) health effects on people or animals.
Source & ©:
ATSDR
Glossary of Terms
More:
Can apply to a particular study, species (e.g. rat, dog), or all studies on a
particular substance. The difference between NOAEL and NOEL rests on the
definition of adverse effect only, that is, an experimental study that produced
a NOAEL will have stated the adverse effect to be observed before
initiation.
Related words: Adverse health effect - Dose - Lowest Observed Adverse Effect Level - Threshold (in an ecosystem)
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