E masani lava, o le atinaʻeina o mea olaola fou e tatau ona uia (1) suʻesuʻega fale suʻesuʻe (suʻesuʻeina o le auala o gaosiga ma faʻavaeina o tulaga faʻatonutonu lelei) ( 2) Suʻesuʻega muamua (pharmacological, toxicological, pharmacodynamic ma isi suʻesuʻega manu) ( 3) Meaʻai maloloina. e tatau ona pasi le su'ega saogalemu o le oloa fa'ata'ita'iina ( 4) E mana'omia e vaila'au ona uia vaega e lima o galuega su'esu'e, e pei o le vaega I fa'ata'ita'iga fa'apitoa (fa'ata'ita'iina o le saogalemu o vaila'au fa'atasi ma volenitia soifua maloloina), vaega II fa'ata'ita'iga fa'apitoa (tama'i Fa'asoifua maloloina. Pharmacodynamics Research), ma le vaega III fa'ata'ita'iga fa'ata'ita'i (tele-scale Clinical Pharmacodynamics Research), a'o le'i fa'atagaina mo le gaosiga o fa'ata'ita'iga. A maeʻa le tausaga e tasi o le gaosiga o faʻataʻitaʻiga, e tatau i le vailaʻau ona lipotia iʻuga o le mautu lelei ma faʻalautele atili faʻataʻitaʻiga faʻataʻitaʻiga aʻo leʻi talosaga mo le faʻatagaina aloaia.