Ma'anar ƙamus na tantance kwayoyin halitta shine tsarin gwada DNA na mutum don takamaiman yanayin kwayoyin halitta ko maye gurbi wanda zai iya haɗuwa da haɗarin wasu cututtuka ko cuta. Ana yawan yin gwajin kwayar halitta kafin ko lokacin daukar ciki don tantance hadarin da ke tattare da isar da wasu yanayi ga ‘ya’ya, ko kuma ana iya yin shi a matsayin wani bangare na kula da lafiya na yau da kullum don tantance hadarin gaba daya mutum na tasowa wasu yanayi. Sakamakon binciken kwayoyin halitta zai iya taimaka wa mutane su yanke shawara game da lafiyarsu da zaɓin tsarin iyali.