16 Scopus citations


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.

Original languageEnglish
Pages (from-to)115-118
Number of pages4
JournalCalcified Tissue International
Issue number2
StatePublished - Mar 1986


  • Diurnal variation
  • Ionized calcium and phosphate
  • Postmenopausal women
  • Young men


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