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. 2019 Feb 14;121(3):270–284. doi: 10.1017/S0007114518003379

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© The Authors 2018

This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obtained for commercial re-use or in order to create a derivative work.

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Fig. 1 — Biochemical parameters over the study day for study 1. (a) Plasma phosphorus, (b) whole blood ionised calcium (iCa), (c) plasma parathyroid hormone (PTH) and (d) fibroblast growth factor 23 (FGF-23). Diet A (): 4·8 g total phosphorus/4184 kJ (1000 kcal), 3·5 g phosphorus from sodium dihydrogen phosphate/4184 kJ (1000 kcal), calcium:phosphorus 0·56. Diet B (): 3·38 g total phosphorus/4184 kJ (1000 kcal), no added inorganic phosphorus, calcium:phosphorus 1·55. Values are means, with 95 % CI represented by vertical bars. *Mean values were significantly different from baseline (P <0·05). Reference ranges are shown for each parameter, but for FGF-23 only the minimum is shown. Significant differences between diets: false () and true ().

Inline graphic — Biochemical parameters over the study day for study 1. (a) Plasma phosphorus, (b) whole blood ionised calcium (iCa), (c) plasma parathyroid hormone (PTH) and (d) fibroblast growth factor 23 (FGF-23). Diet A (): 4·8 g total phosphorus/4184 kJ (1000 kcal), 3·5 g phosphorus from sodium dihydrogen phosphate/4184 kJ (1000 kcal), calcium:phosphorus 0·56. Diet B (): 3·38 g total phosphorus/4184 kJ (1000 kcal), no added inorganic phosphorus, calcium:phosphorus 1·55. Values are means, with 95 % CI represented by vertical bars. *Mean values were significantly different from baseline (P <0·05). Reference ranges are shown for each parameter, but for FGF-23 only the minimum is shown. Significant differences between diets: false () and true ().