The method shown in the image: Chorionic villus sampling
Chorionic villus sampling
It is a form of prenatal diagnosis to determine chromosomal or genetic disorders in the fetus. It entails sampling of the chorionic villus (placental tissue) and testing it for chromosomal abnormalities, usually with FISH or PCR. CVS usually takes place at 10–12 weeks’ gestation, earlier than amniocentesis or percutaneous umbilical cord blood sampling.
It can be performed in a transcervical or transabdominal manner.
Abnormal first-trimester screen results
Increased nuchal translucency or other abnormal ultrasound findings
Family history of a chromosomal abnormality or other genetic disorder
Parents are known carriers for a genetic disorder
Advanced maternal age (maternal age above 35). It is associated with an increased risk of Down’s syndrome and at age 35, the risk is 1:400.
Miscarriage, infection, and amniotic fluid leakage