Which statement regarding various biochemical assessments used during pregnancy is correct?
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.

Question

Quizplus · Accepted Answer

MSAFP is a screening tool,not a diagnostic tool.Further diagnostic testing is indicated after an abnormal MSAFP.CVS does provide a rapid result,but it is declining in popularity because of advances in noninvasive screening techniques.MSAFP screening is recommended for all pregnant women.Screening is recommended between 15 and 20 weeks of gestation.Abnormal findings give parents time to have additional tests done.

Which Statement Regarding Various Biochemical Assessments Used During Pregnancy Is