title: Human chorionic gonadotropin levels in conception cycles after uterine and tubal embryo transfer.
abstract: OBJECTIVE
  To describe the rate of rise of beta-hCG levels in normal single gestations after uterine and tubal embryo transfer.
  
  
  METHODS
  A prospective study from 1991 through 1992 in which infertility patients who conceived after ovulation induction and ET were monitored with serum beta-hCG levels.
  
  
  METHODS
  Infertility unit at Rush-Presbyterian-St. Luke's Medical Center in Chicago, Illinois.
  
  
  METHODS
  Ninety-eight women conceived after ovarian stimulation and ET. This study included only patients who conceived after uterine ET (n = 12) and tubal ET (n = 25) and had an exponential rise of beta-hCG levels and sonographic evidence of an intrauterine gestation.
  
  
  RESULTS
  The rate of rise of mean beta-hCG levels after ET preceded that of tubal ET by 24 hours until day 14 when the two approximate each other.
  
  
  CONCLUSIONS
  There appears to be a unique interaction between the trophoblast and endometrial surface that may account for the early detection of beta-hCG after uterine versus tubal ET.
authors.affiliation: Department of Obstetrics and Gynecology, Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois 60612.
authors.forename: B
authors.initials: B
authors.lastname: Soltes
authors.forename: R G
authors.initials: RG
authors.lastname: Rawlins
authors.forename: Z
authors.initials: Z
authors.lastname: Binor
authors.forename: E
authors.initials: E
authors.lastname: Radwanska
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood*; D004624:Embryo Transfer / Q000379:methods*; D005187:Fallopian Tubes; D005260:Female; D005306:Fertilization; D006801:Humans; D011446:Prospective Studies; D013997:Time Factors; D014599:Uterus
chemical_list: D006063:Chorionic Gonadotropin