STATEMENT OF PRENATAL SCREENING TEST IN THANH KHE - DA NANG For investigating situation of prenatal screening tests in 1501 pregnan women with 1611 pregnancies in Bien Hoa from 2012 to 2015, we found that: For monitoring the pregnancy, during pregnancy, women in Thanh Khe - Da Nang: 33.58% pregnancies were done double test, 13.52% were done triple test.