First Trimester
Down Syndrome Screen
Formal name: First Trimester Screen [Pregnancy-associated plasma protein-A (PAPP-A), human chorionic gonadotropin (hCG) as either free beta subunit or total hCG, and nuchal translucency ultrasound]
Related tests: Triple/Quad Screen; total hCG
Related Pages
On This Site
Conditions: Down Syndrome, Pregnancy
In the News: Prenatal Assay Might Be Alternative to Risky, Invasive Prenatal Tests (2008), ACOG Releases New Guidelines for Screening Tests Recommended During Pregnancy (2007)
In the News: Prenatal Assay Might Be Alternative to Risky, Invasive Prenatal Tests (2008), ACOG Releases New Guidelines for Screening Tests Recommended During Pregnancy (2007)
Elsewhere On The Web
American College of Obstetricians and Gynecologists: Birth Defects
National Down Syndrome Society
Trisomy 18 Foundation
National Down Syndrome Society
Trisomy 18 Foundation
NOTE: Pages listed here are provided as supplemental resources for your further research. For a complete list of sources used in preparing this article, click here.
