Early in your pregnancy, your doctor may suggest a choice of 2 different types of blood tests and/or ultrasound. These screening tests allow your doctor to discover what the chances are for your baby to have a problem. If your chances are high, special tests called CVS (chorionic villus sampling) or amniocentesis can be done. With these tests, chromosomal abnormalities, such as Down syndrome can be found. These studies cannot detect all abnormalities. In any pregnancy, there is always a small possibility of a birth defect being present. More information regarding CVS and amniocentesis will be given to you if you and your doctor decide the test may be needed.
If these tests are abnormal, you and your doctor will discuss the nature of the possible problems and what actions may need to be taken.