title: Diurnal variation of serum calcium and phosphorus in postmenopausal women.
abstract: Serum calcium, ionized calcium, and phosphorus have been obtained at hourly intervals in nine healthy postmenopausal women. The hourly means of ionized calcium and phosphorus demonstrate significant diurnal variation with a similar apogee, nadir, and periodicity (24 hours). These results are distinct from the diurnal variation of ionized calcium and phosphorus previously reported for young men and provide more evidence of an altered mineral hemostasis in postmenopausal women.
authors.forename: H M
authors.initials: HM
authors.lastname: Perry
authors.forename: M A
authors.initials: MA
authors.lastname: Province
authors.forename: D M
authors.initials: DM
authors.lastname: Droke
authors.forename: G S
authors.initials: GS
authors.lastname: Kim
authors.forename: S
authors.initials: S
authors.lastname: Shaheb
authors.forename: L V
authors.initials: LV
authors.lastname: Avioli
mesh_terms: D000368:Aged; D001842:Bone and Bones / Q000378:metabolism; D002118:Calcium / Q000097:blood*; D002940:Circadian Rhythm; D005260:Female; D006706:Homeostasis; D006801:Humans; D008593:Menopause; D008875:Middle Aged; D010758:Phosphorus / Q000097:blood*
chemical_list: D010758:Phosphorus; D002118:Calcium