Genetic Testing In Pregnancy For Certain Genes Genetic testing in pregnancy for certain genes and genetic disorders helps people to prepare for the birth of their child whether healthy or otherwise. Prenatal diagnosis is preformed to determine if a fetus has any abnormal genes that may be cause for alarm. Different ethnic groups are more prone to certain genetic disorders, therefore genetic testing in pregnancy allows parents the ability to decide if they want to continue the pregnancy or not. Either way you will know the status of your unborn child and you receive all the information you need to plan your decision