NOAEL = no-observed-adverse-effect-level. LOAEL = lowest-observed-adverse-effect-level. UF = Uncertainty factor ... below which no adverse effect will occur. For chemicals that give rise to such toxic effects, a tolerable daily intake (TDI) ... deleterious effects upon health. However, consideration should be given to any potential acute effects that may occur if the ... Short-term exposure to levels exceeding the TDI is not a cause for concern, provided the individuals intake averaged over ...