this is a technique in which fetal blood is taken from the umbilical cord, through the mother's abdominal wall, under ultrasound control.

A procedure during pregnancy in which a needle is inserted into the fetal vein in the umbilical cord permitting fetal blood to be analyzed, blood to be transfused or drugs to be injected directly into the baby.

The procedure of obtaining fetal blood samples for prenatal diagnosis.

(or percutaneous umbilical blood sampling, PUBS) A prenatal test in which fetal blood is removed from the umbilical cord under ultrasound guidance. Cordocentesis can detect blood and genetic disorders, Rh incompatibilities, and an infection. It may also be used to give the fetus a blood transfusion or deliver medication.