title: Limitation of the specific serum radioimmunoassay for human chorionic gonadotropin in the management of trophoblastic neoplasms.
abstract: Two cases of recurrent trophoblastic disease are presented in which human chorionic gonadotropin was detected in assays of urine concentrates at a time when serum levels were undetectable by a sensitive and specific beta-subunit radioimmunoassay. The potential greater usefulness of measurements of urinary concentrates is discussed.
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood* / Q000652:urine; D005260:Female; D006801:Humans; D011247:Pregnancy; D011863:Radioimmunoassay; D012008:Recurrence; D014328:Trophoblastic Neoplasms / Q000378:metabolism*
chemical_list: D006063:Chorionic Gonadotropin