title: A false negative pregnancy test in a patient with a hydatidiform molar pregnancy.
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Tabas
authors.forename: Matthew
authors.initials: M
authors.lastname: Strehlow
authors.forename: Eric
authors.initials: E
authors.lastname: Isaacs
mesh_terms: D000328:Adult; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood / Q000276:immunology / Q000652:urine; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D006828:Hydatidiform Mole / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011247:Pregnancy; D011259:Pregnancy Tests, Immunologic; D014463:Ultrasonography; D014594:Uterine Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging
chemical_list: D018997:Chorionic Gonadotropin, beta Subunit, Human