percutaneous umbilical blood sampling

percutaneous umbilical blood sampling A procedure in which a needle is inserted through the mother’s abdominal wall and then through the uterine wall. Abbreviated PUBS. In PUBS, blood can be withdrawn from the umbilical vein at the point where the umbilical cord inserts into the placenta. Also known as umbilical vein sampling, cordocentesis, and fetal blood sampling.