What Does NOAEL Stand For?

NOAEL stands for No Observable Adverse Effect Level

NOAEL, or No Observable Adverse Effect Level, refers to the highest dose of a substance in a toxicity study at which no significant adverse effects are observed in the test subjects. This measurement is crucial for assessing the safety and potential risks associated with chemical exposures and is used in regulatory risk assessments to establish safe exposure limits.

Added on 14th April 2008 | Last edited on 16th June 2025 | Edit Acronym