TY - JOUR T1 - New trends in prenatal screening for chromosomal abnormalities JF - Saudi Medical Journal JO - Saudi Med J SP - 429 LP - 432 VL - 21 IS - 5 AU - Mohd H. Addar Y1 - 2000/05/01 UR - http://smj.org.sa/content/21/5/429.abstract N2 - In the recent years, the scope of prenatal genetic diagnosis has expanded greatly with the development of a number of new methods, such as maternal serum screening and ultrasound screening for detection of fetal abnormalities. These methods have the advantage of providing earlier diagnosis in addition to being non-invasive and of less psychological traumas. Pre-implantation genetic diagnosis is another new growing field offering the genetic diagnosis prior to implantation. The most promising of all is the first trimester biochemical screening in conjunction with ultrasound nuchal translucency screening. ER -