Bayan haka, NOAEL (ko wani batu na farawa irin su matakin ma'auni (BMDL)) an raba shi ta hanyar aminci, a al'ada 100, don yin la'akari da bambance-bambance tsakanin dabbobi da mutane (factor na 10) da kuma yiwuwar bambance-bambance a cikin jin dadi tsakanin mutane (wani abu na 10) tare da ƙididdigar aminci fiye da 100 na iya amfani da su idan an yi amfani da bayanai game da rashin tabbas game da ma'anar farawa (NOAEL) ko BMDL. Don ADI, yawanci ana gudanar da karatu tare da magunguna da dama ciki har da manyan magunguna. Idan akwai nazarin da yawa game da tasiri daban-daban, mafi ƙarancin NOAEL ana ɗaukar mafi ƙarancin NOAEL.
NOAEL