title: Measurement of estradiol--challenges ahead.
authors.affiliation: Obstetrics and Gynecology, and Preventive Medicine (F.Z.S.), University of Southern California Keck School of Medicine, Los Angeles, California 90033; and Steroids Department (N.J.C.), Quest Diagnostics Nichols Institute, San Juan Capistrano, California 92675.
authors.forename: Frank Z
authors.initials: FZ
authors.lastname: Stanczyk
authors.forename: Nigel J
authors.initials: NJ
authors.lastname: Clarke
mesh_terms: D003940:Diagnostic Techniques, Endocrine; D004704:Endocrinology / Q000458:organization & administration*; D004958:Estradiol / Q000032:analysis*; D006801:Humans; D012955:Societies, Medical
chemical_list: D004958:Estradiol