Article
First-Trimester down syndrome screening using dried blood biochemistry and nuchal translucency
1 Aug 2000
Abstract excerpt
OBJECTIVE: To assess the effectiveness of free beta-hCG, pregnancy-associated plasma protein A, and nuchal translucency in a prospective first-trimester prenatal screening study for Down syndrome and trisomy 18. METHODS: Risks were calculated for Down syndrome and trisomy 18 based on maternal age and biochemistry only (n = 10,251), nuchal translucency only (n = 5809), and the combination of nuchal translucency...
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