title: Use of a rapid hCG-beta-subunit radioimmunoassay in acute gynaecological emergencies.
abstract: Chorionic gonadotrophin (hCG) was measured by a rapid and sensitive radioimmunoassay in 100 female patients with lower abdominal pain attending an emergency department. Of the 24 subjects with a positive result, 22 had evidence of pregnancy (ectopic or uterine). Of the 76 patients with negative results, 3 had some evidence of pregnancy. This test may be of considerable practical value in the differential diagnosis of acute abdominal emergencies in women of reproductive age.
mesh_terms: D000022:Abortion, Spontaneous / Q000175:diagnosis; D000208:Acute Disease; D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood*; D003937:Diagnosis, Differential; D004630:Emergencies; D004715:Endometriosis / Q000175:diagnosis; D005260:Female; D005831:Genital Diseases, Female / Q000175:diagnosis*; D006801:Humans; D010048:Ovarian Cysts / Q000175:diagnosis; D000292:Pelvic Inflammatory Disease / Q000175:diagnosis; D011247:Pregnancy; D011259:Pregnancy Tests, Immunologic / Q000379:methods*; D011271:Pregnancy, Ectopic / Q000175:diagnosis; D011863:Radioimmunoassay / Q000379:methods*; D012422:Rupture, Spontaneous; D014592:Uterine Hemorrhage / Q000175:diagnosis; D014594:Uterine Neoplasms / Q000175:diagnosis
chemical_list: D006063:Chorionic Gonadotropin