The choroidal epithelium is a finger-shaped follicle that emerges from the embryonic sac and contains cells that have the same genetic makeup as the fetus
In this test, a small sample of these chorionic tissues is taken for analysis to determine any genetic changes in the fetus. This test can be performed before the amniotic hole test, usually between the eighth and tenth weeks of pregnancy. It takes about half an hour
The risk of this test: infection and bleeding of the mother or fetus and automatic abortion and immunization of the child’s blood and defects of the fetal and embryonic infiltration of membranes surrounding the fetus and in general, the taking of a sample of chlamydia is more dangerous than the hole of the security. And the most important features that it can be done very early in pregnancy and it is an easy and less risky way to terminate pregnancy if necessary and like other tests, you have to balance carefully between the pros and cons before making any decision