title: Defining the curve when initial levels of human chorionic gonadotropin in patients with spontaneous abortions are low.
abstract: Because lower initial hCG concentrations are associated with slower rates of decline in spontaneous abortions, the aim of this study was to provide a detailed description of the expected rates of hCG decline in patients presenting with very low initial hCG levels and who ultimately were confirmed to have spontaneous abortions. When initial levels lie between 50 and 500 mIU/mL, the slowest expected percentage decline ranges from 12% to 24% in 2 days and from 34% to 68% in 7 days.
authors.affiliation: Penn Fertility Care, University of Pennsylvania, Philadelphia, Pennsylvania, USA. karinechung@yahoo.com
authors.forename: Karine
authors.initials: K
authors.lastname: Chung
authors.forename: Mary
authors.initials: M
authors.lastname: Sammel
authors.forename: Lan
authors.initials: L
authors.lastname: Zhou
authors.forename: Amy
authors.initials: A
authors.lastname: Hummel
authors.forename: Weshang
authors.initials: W
authors.lastname: Guo
authors.forename: Kurt
authors.initials: K
authors.lastname: Barnhart
mesh_terms: D000022:Abortion, Spontaneous / Q000097:blood*; D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008954:Models, Biological; D009994:Osmolar Concentration; D011247:Pregnancy; D013997:Time Factors
chemical_list: D006063:Chorionic Gonadotropin