After the blood sample is drawn, it's sent to a laboratory where a technician tests the blood for genetic defects and other disorders. In most cases, the results are ready within a few weeks. Your doctor will explain the results to you and, if a problem is diagnosed, give you information about ending the pregnancy or how best to care for your baby after birth.
Update Date 2/24/2007
Updated by: Douglas A. Levine, MD, Gynecology Service, Memorial Sloan-Kettering Cancer Center, New York, NY. Review provided by VeriMed Healthcare Network.