name of a test

hi im staying in argentina right now,and i want to do another time the exsam of "skifout orpiy" becouse i do it in the 11 week day befor i left israel AND the unser was 4 sntimter.... now im in thw week 13 AND i have a friend here that found me a doctor bat i dont know the name of the test i dont want "skirat marachot.. please write me the name of the exsame tanks alot orit

the name is " nuchal translucency