title: Interference in urinary free cortisol determination by components of the NuvaRing contraceptive device.
authors.forename: José Miguel
authors.initials: JM
authors.lastname: Escudero Fernández
authors.forename: Irene Halperin
authors.initials: IH
authors.lastname: Rabinovich
authors.forename: Maria Jesus
authors.initials: MJ
authors.lastname: Martínez de Osaba Madariaga
mesh_terms: D000328:Adult; D016477:Artifacts; D003429:Cross Reactions; D017135:Desogestrel / Q000031:analogs & derivatives / Q000494:pharmacology; D004338:Drug Combinations; D004997:Ethinyl Estradiol / Q000494:pharmacology; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000032:analysis* / Q000276:immunology / Q000652:urine; D007118:Immunoassay; D011247:Pregnancy; D014556:Urine
chemical_list: D004338:Drug Combinations; C516519:NuvaRing; D004997:Ethinyl Estradiol; D017135:Desogestrel; D006854:Hydrocortisone