Calcium, Phosphorus, calcium-phosphorus ratio in rib bone of healthy humans

Abstract

Calcium and phosphorus concentrations as well as the Ca/P ratio were estimated in intact rib bone samples from healthy humans, 37 women and 45 men, aged 15–55 yr. For Ca and P concentration measurements, instrumental neutron activation analysis was used. The mean values (mean±SD) for the investigated parameters were 19.3±4.5% of dry bone weight, 8.42±2.14% of dry bone weight, and a ratio of 2.33±0.34, respectively. Statistically significant differences for the above parameters were not observed to be related either to age or sex. The mean values for Ca, P, and the Ca/P ratio were within a very wide range of published data and close to their medians. The individual variation for the Ca/P ratio in rib bone from healthy humans was lower than those for Ca and P taken separately. An indication is that the specificity of the Ca/P ratio improves upon that for Ca and P concentrations and may be more reliable in the diagnosis of bone disorders.

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Correspondence to Margaret Tzaphlidou.

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Tzaphlidou, M., Zaichick, V. Calcium, Phosphorus, calcium-phosphorus ratio in rib bone of healthy humans. Biol Trace Elem Res 93, 63–74 (2003). https://doi.org/10.1385/BTER:93:1-3:63

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Index Entries

  • Calcium
  • phosphorus
  • Ca/P ratio
  • human rib bone
  • neutron activation analysis