A 28-yeаr-оld primipаrоus wоmаn who is 17-weeks gestation is being seen today for a routine antepartum visit. She is scheduled to have a maternal serum alpha fetoprotein (MSAFP) as part of a Quad Screen drawn at this visit. She now states that she is not sure that she wants this test done because several of her friends had the test come back abnormal. They worried the whole pregnancy that something was wrong with their babies. In counseling her, you: