Median FGF23
  Quartile 1
32.6
Quartile 2
49.3
Quartile 3
73.9
Age 26 30 36
S. PO4 3.5 3 2.1
S. CR 0.8 0.5 0.9
FEPo4 6.87 8.79 16.58
TmP/GFR 3.26 2.74 1.75
TPO 1588.24 1305.87 1588.24
Table 4: Distribution of dietary phosphate and indices of renal handling with median FGF23 quartiles.