Nurses Should Be Aware of the Strengths and Limitations of Various

Nurses should be aware of the strengths and limitations of various biochemical assessments during pregnancy,including that

A) Chorionic villus sampling (CVS) is becoming more popular because it provides early diagnosis.
B) Screening for maternal serum alpha-fetoprotein (MSAFP) levels is recommended between 10 and 12 weeks of gestation in order to give parents time to consider options.
C) Percutaneous umbilical blood sampling (PUBS) is one of the multiple marker screen tests for Down syndrome.
D) MSAFP is a screening tool only; it identifies candidates for more definitive procedures.