A 25-year-old client at 7 weeks' gestation comes to the clinic for her first prenatal visit. The client tells the midwife that a friend recently gave birth to a baby with Down syndrome and that she is concerned about her baby's chances of developing the same diagnosis. The midwife informs the client that a combined first trimester screening test may be ordered as early as the 11th week of her pregnancy to help evaluate the fetus's risk for chromosomal abnormalities. The midwife informs the client that all of the following tests are included in the combined first trimester screening test except:

Question

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The alpha-fetoprotein screening test is scheduled during the second trimester, between the 16th and 18th week of gestation. During the first trimester the midwife may schedule the client for nuchal translucency screening, pregnancy-associated plasma protein screening or PAPP-A and human chorionic gonadotropin test to determine the fetus's risk for any chromosomal abnormalities, such as Down syndrome and trisomy 18. The combined first trimester screening test or CFTS is an accurate, non-invasive and optional prenatal screening test than can be scheduled as early as 11th week of pregnancy.

A 25-Year-Old Client at 7 Weeks' Gestation Comes to the Clinic