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Ball, S., Ekelund, C., Wright, D., Kirkegaard, I., Nørgaard, P., Petersen, O.B., et al. (2013) Temporal Effects of Maternal and Pregnancy Characteristics on Serum Pregnancy-Associated Plasma Protein-A and Free Beta-Human Chorionic Gonadotropin at 7-14 Weeks Gestation. Ultrasound in Obstetrics & Gynecology, 41, 33-39.
https://doi.org/10.1002/uog.11209

has been cited by the following article:

• TITLE: β-HCG Level as a Predictive Marker of Pregnancy Progression or Retrogression

  AUTHORS: George Gborienemi Simeon, Marymar Ezejimofor, Newton Cleston Odumoson

  KEYWORDS: β-HCG, Predictive, Marker, Pregnancy, Progression, Retrogression

  JOURNAL NAME: Open Journal of Obstetrics and Gynecology, Vol.11 No.6, June 15, 2021

  ABSTRACT: An ordered sequence of biologic events is precursors of the birth of a healthy baby. Hormonal interactions acting as a nexus between the fetus, placenta and mother that controls the establishment and progression of pregnancy and fetal development are very important. We examined the role of Beta-Human Chorionic Gonadotropin (β-HCG) as a predictive marker. Applying radioimmunoassay that utilizes anti-sera generated from specific β-submit of HCG we evaluated the serum β-HCG level in 60 pregnant women in the three trimesters. Results showed that there was consistent increase in concentration that drops gradually and maintained a plateau only to drop from the 40th week of pregnancy. 3 subjects (5%) that had a sudden sharp drop in β-HCG level resulted in complications. Inclusion of β-HCG level screening and monitoring in pregnancy will raise assurance of progress or retrogression in pregnancy. We provide data that can be used as a reference range for β-HCG using this method.