Common third-trimester prenatal tests during pregnancy | Face IT DNA Third-trimester prenatal tests are done at the end of the pregnancy period i.e. from 7th to 9th month. In this period, these tests ensure the health of a mother and a baby. Prenatal DNA Test Atlanta will help you in these following third-trimester prenatal tests See here to know more: https://faceitdna.com/common-third-trimester-prenatal-tests-during-pregnancy/