Early first-trimester free β-hCG and PAPP-A serum distributions in monochorionic and dichorionic twins

Background In the Netherlands, prenatal screening for trisomy 21 in the first trimester of pregnancy for singletons is conducted through a combined test based on maternal age, nuchal translucency measurement and maternal serum free β‐hCG and PAPP‐A. In our clinic risk calculations in twins are curre...

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Veröffentlicht in:	Prenatal diagnosis 2009-01, Vol.29 (1), p.74-78
Hauptverfasser:	Linskens, I. H., Spreeuwenberg, M. D., Blankenstein, M. A., van Vugt, J. M. G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Biological and medical sciences Biomarkers - blood Chorionic Gonadotropin, beta Subunit, Human - blood chorionicity Cohort Studies Delivery. Postpartum. Lactation Down Syndrome - blood Female free β-hCG Fundamental and applied biological sciences. Psychology Genetics of eukaryotes. Biological and molecular evolution Gynecology. Andrology. Obstetrics Humans Medical sciences Molecular and cellular biology PAPP-A Placenta Pregnancy Pregnancy Trimester, First - blood Pregnancy-Associated Plasma Protein-A - analysis Reference Values trisomy 21 twins Twins, Dizygotic Twins, Monozygotic
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