What kind of testing would involve amniocentesis or chorionic villus sampling?

Amniocentesis and chorionic villus sampling (CVS) are procedures that are specifically used for prenatal testing. These tests are performed during pregnancy to assess the fetus for certain genetic disorders or chromosomal abnormalities. Amniocentesis involves retrieving amniotic fluid to analyze fetal cells, while CVS involves taking a sample of tissue from the placenta. Both techniques can provide critical information about the health of the fetus and are typically utilized to detect conditions such as Down syndrome or other genetic disorders before birth.

In contrast, postnatal screening focuses on testing newborns after they are born to check for genetic or metabolic disorders. Genetic counseling refers to the process where individuals or families receive information and support regarding genetic conditions, which may include discussions about prenatal testing options, but it does not involve performing the tests themselves. Carrier testing determines if individuals carry a gene for certain inherited conditions, usually before they have children, rather than during pregnancy.