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Absence of circulating chorionic gonadotropin in wearers of intrauterine contraceptive devices
American Journal of Obstetrics and Gynecology
|November 15, 1977
Abstract:
Daily measurements of human chorionic gonadotropin (HCG) beta subunit, luteinizing hormone (LH), and progesterone were carried out in 24 subjects wearing intrauterine contraceptive devices. Detectable HCG was not found in any subject, but in four subjects delayed LH pulses resulted in apparent low levels of HCG because of cross-reactivity in the HCG beta subunit radioimmunoassay.
Keywords:
BiologyClinical ResearchContraceptionContraceptive Methods--side effectsEndocrine SystemFamily PlanningGonadotropinsGonadotropins, Chorionic--analysisGonadotropins, PituitaryHormonesIud--side effectsLuteinizing Hormone--analysisPhysiologyProgestational HormonesProgesterone--analysisResearch Methodology