The chances of monochorionic amniotic twins being LW twins are 0%. Monochorionic amniotic twins are formed when a single fertilized egg splits, whereas LW twins develop from two fertilized eggs, so monochorionic amniotic twins are virtually impossible to be LW twins. Monochorionic amniotic twins are twins with a single layer of chorionic villus and two amniotic sacs. They usually develop from the division of a single fertilized egg, so the two fetuses have exactly the same genome and are of the same sex, and the chances of monochorionic amniotic twins being LWs are 0%. Whereas, LW twins are developed from two different fertilized eggs, each with a completely different genome and therefore different sexes. LW twins are often double-chorionic double-goat twins with two placentas, double chorionic chorionic villi, and two amniotic chambers in the mother’s uterus. If the test reveals monochorionic bi-amniotic twins, please follow your doctor’s instructions to complete the subsequent labor and delivery tests.