Which Test Provides the Earliest Indication of Genetic Problems in a Fetus

Question

Which test provides the earliest indication of genetic problems in a fetus?
A) Amniocentesis
B) Chorionic villus sampling
C) Both provide reliable indications at the same stage of development

Accepted Answer

Chorionic villus sampling (CVS) provides the earliest indication of genetic problems in a fetus, typically done around 10-12 weeks of pregnancy. Amniocentesis is typically done at 16-20 weeks of pregnancy. Therefore, CVS is the best choice for the earliest indication of genetic problems in a fetus.