A non-invasive maternal blood test that can detect certain fetal chromosomal disorders, including Down syndrome, early in pregnancy is improving some skill of attention as a potential new method of prenatal screening. Currently, several organizations support its use in pregnant women at high risk of having a child with a disorder caused by an abnormal number of chromosomes. However, invasive diagnostic tests, such as chorionic villus sampling (CVS) and amniocentesis, are needed to confirm the results, still.