Your prenatal screening results will tell you if there is a higher or lower chance to have a baby with a chromosome difference, like trisomy 21 or trisomy 18. Ultrasounds give you extra information about the health of the baby.

In this section, you can find out information about what your screening and ultrasound results mean, and next steps you can think about. Remember that only diagnostic testing can give you "yes" or "no" answers about chromosome differences.