title: Biochemical screening for congenital defects.
abstract: This article discusses biochemical screening for congenital defects. Biochemical screening remains the standard for estimating the risk of aneuploidy in pregnancy. The combination of first and second trimester markers promises to further improve diagnostic accuracy for anomaly detection.
authors.affiliation: Department of Obstetrics & Gynecology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267, USA. bahadoro@ucmail.uc.edu
authors.forename: Ray O
authors.initials: RO
authors.lastname: Bahado-Singh
authors.forename: Jaime
authors.initials: J
authors.lastname: Sutton-Riley
mesh_terms: D034861:Abdominal Wall / Q000002:abnormalities; D015415:Biomarkers / Q000097:blood; D006063:Chorionic Gonadotropin / Q000097:blood; D002887:Chromosomes, Human, Pair 18; D004314:Down Syndrome / Q000097:blood* / Q000175:diagnosis; D005260:Female; D006801:Humans; D007265:Inhibins / Q000097:blood; D009436:Neural Tube Defects / Q000097:blood; D011247:Pregnancy; D011264:Pregnancy Trimesters; D011266:Pregnancy-Associated Plasma Protein-A / Q000032:analysis; D011296:Prenatal Diagnosis; D014314:Trisomy / Q000175:diagnosis*
chemical_list: D015415:Biomarkers; D006063:Chorionic Gonadotropin; C422362:inhibin A; D007265:Inhibins; D011266:Pregnancy-Associated Plasma Protein-A