پاورپوینت غربالگری وتشخیص پیش ازتولد Screening, PND and molecular genetic methods 48اسلایدهمراه باتصویر به زبان انگلیسی Prenatal Screening •This can detect a disorder before a baby is born. •An ultrasound test is used to determine if the fetus is at a high or low risk from a genetic disorder. •Disorders are diagnosed by examining a small amount of fetal cells. This carries a small risk to the fetus. •If diagnosed early in the pregnancy, there is still t ...