title: [Effects of different fertilizations upon serum HCG level of IVF versus ET in early pregnancy].
abstract: OBJECTIVE
  To compare the serum HCG levels in pregnant women of routine IVF versus ICSI during fresh transplantation cycles so as to explore whether ICSI influenced the serum HCG levels.
  
  
  METHODS
  A total of 934 IVF pregnant cycles during March 2005 to September 2006 were divided into 7 groups: biochemical pregnancy (A), first-trimester miscarriages (B), ectopic pregnancy (C), single-pregnancy (D), twin-pregnancy (E), triplet-pregnancy (F) and heterotopic pregnancy (G). The median of serum HCG level at Days 14 and 21 was calculated among 7 groups.
  
  
  RESULTS
  The serum HCG value was lower by ICSI than that by IVF only in biochemical pregnancy group at Day 14 (P = 0. 032).
  
  
  CONCLUSIONS
  ICSI is associated with relatively low HCG values in the biochemical pregnancies at Day 14 after embryo transplantation. There is no statistical difference of HCG level for clinical pregnancy between IVF and ICSI.
authors.affiliation: Reproductive Medicine Center, Peking University Third Hospital, Beijing 100083, China.
authors.forename: Hong-Bin
authors.initials: HB
authors.lastname: Chi
authors.forename: Jie
authors.initials: J
authors.lastname: Qiao
authors.forename: Hong-Zhen
authors.initials: HZ
authors.lastname: Li
authors.forename: Ping
authors.initials: P
authors.lastname: Liu
authors.forename: Cai-Hong
authors.initials: CH
authors.lastname: Ma
mesh_terms: D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood*; D004624:Embryo Transfer / Q000379:methods*; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D015292:Glycoprotein Hormones, alpha Subunit / Q000097:blood*; D006801:Humans; D011247:Pregnancy; D011256:Pregnancy Outcome; D011261:Pregnancy Trimester, First; D020554:Sperm Injections, Intracytoplasmic
chemical_list: D018997:Chorionic Gonadotropin, beta Subunit, Human; D015292:Glycoprotein Hormones, alpha Subunit