Diagnostic tests are more definitive than screening tests and involve analyzing fetal cells or amniotic fluid. They include: - Amniocentesis: This test involves taking a sample of amniotic fluid to analyze fetal cells for genetic disorders. - Chorionic Villus Sampling (CVS): This involves taking a sample of placental tissue to test for genetic abnormalities. - Ultrasound: Detailed ultrasounds can detect structural abnormalities in the fetus.
