Abstract: This handout describes genetic tests that a mother may choose to have during her pregnancy. It includes screening and diagnostic tests such as nuchal translucency (NT) ultrasound, integrated screen, quad screen, chorionic villus sampling (CVS), amniocentesis with ultrasound, and anatomy ultrasound. Through prenatal tests of genetics, doctors gain information about Down syndrome (trisomy 21), trisomy 18 (Edwards syndrome), spina bifida, and other inherited diseases. This document is a chapter in the birth book "Pregnancy and Giving Birth."
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