No Observable Adverse Effect Level
An exposure level at which there are no statistically or biologically significant increases in the frequency or severity of adverse effects between the exposed population and its appropriate control; some effects may be produced at this level, but they are not considered as adverse, or as precurors to adverse effects. In an experiment with several NOAELs, the regulatory focus is primarily on the highest one, leading to the common usage of the term NOAEL as the highest exposure without adverse effects.
Selected No Observable Adverse Effect Level links:
|© 1997-2006 Healthboard.com. Healthboard.com is a purely informational website, and should not be used as a substitute for professional legal, medical or technical advice.|