title: Serial human chorionic gonadotropin determinations by fluoroimmunoassay for differentiation between intrauterine and ectopic gestation.
abstract: A new means for differentiation between ectopic and early intrauterine pregnancy--the human chorionic gonadotropin score--is described. The score relates the rate of serum hCG rise per day to the initial human chorionic gonadotropin level. The positive predictive value for ectopic pregnancy was 94.7%, based on human chorionic gonadotropin scores from 41 women with increasing human chorionic gonadotropin levels in the range of 10 to 4000 IU/L. The method may be useful for identification of ectopic pregnancy in a category of women in whom ultrasonography is of limited diagnostic value.
authors.affiliation: Department of Obstetrics and Gynecology, University of Göteborg, Sweden.
authors.forename: B
authors.initials: B
authors.lastname: Lindblom
authors.forename: M
authors.initials: M
authors.lastname: Hahlin
authors.forename: P
authors.initials: P
authors.lastname: Sjöblom
mesh_terms: D006063:Chorionic Gonadotropin / Q000097:blood*; D003937:Diagnosis, Differential; D005260:Female; D015200:Fluoroimmunoassay / Q000379:methods; D006801:Humans; D010535:Laparoscopy; D007813:Laparotomy; D011247:Pregnancy; D011258:Pregnancy Tests / Q000379:methods*; D011261:Pregnancy Trimester, First; D011271:Pregnancy, Ectopic / Q000175:diagnosis*; D013997:Time Factors
chemical_list: D006063:Chorionic Gonadotropin