This article is from the Pregnancy Screening FAQ, by Lynn Gazis-Sax (firstname.lastname@example.org) with numerous contributions by others.
No. Most defects are not detected by this or any other test. However a few
rare defects may be detected in addition to neural tube defects and Down's.
Some pregnancies which may be at increased risk for low birth weight and
prematurity are occasionally identified, as are some twin pregnancies. Note
that this identification does not come from the screen itself, but from