Prenatal DNA testing can be performed using a CVS sample or an amniotic fluid sample. If you are interested in proceeding with prenatal testing, the first step is to arrange an appointment for amniocentesis or CVS with your physician/obstetrician. Please note that both amniotic fluid collection and CVS sampling are invasive procedures which carry a risk to the child. Unless you are already scheduled for a CVS or Amniocentesis for medical reasons and wish to use the same sample for paternity testing, it is best to conduct the test after the child is born. DNA testing can be performed on the day of birth using a painless mouth swab kit.