QUESTION 7 Results of a chronic rodent bioassay on a new ind

QUESTION 7

         Results of a chronic rodent bioassay on a new industrial chemical provide evidence of a NOAEL (no-observed-adverse-effect-level) of 3 mg/kg for non-cancer effects. This finding suggests that this new chemical has a toxicity threshold.  

                  True or False

Solution

Yes this finding suggests that the new chemical has a toxicity threshold as from the findings the NOAEL is 3 mg/kg. This is the level upto which no harmful/ toxic effect of this chemical will be seen. Beyond this level only the toxicity effects will be shown. NOAEL is the upper limit upto which a chemical when consumed will not cause any adverse reactions.