An Obstetrician Knows That Her Patient's Fetus Is at Risk

Multiple Choice

An obstetrician knows that her patient's fetus is at risk for a serious disorder that is detectable biochemically in fetal cells. The obstetrician would most reasonably offer which of the following procedures to her patient?

A) karyotyping of the woman's somatic cells
B) sonogram
C) amniocentesis or CVS
D) blood transfusion