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. 2021 Mar 4;16(1):52. doi: 10.1007/s11657-021-00879-9

Fig. 1.

Fig. 1

The nomogram for determination of the renal tubular threshold maximum for phosphate (TmP/GFR). The tubular reabsorption of phosphate (TRP) is calculated as described in the text. A line plotted from the serum concentration of phosphate on the left axis to intersect with the TRP along the central diagonal axis. Where this line intersects, the right axis represents TmP/GFR. [Reprinted from R. J. Walton and O. L. Bijvoet: Nomogram for the derivation of renal threshold phosphate concentration. Lancet 306:309 –310, 1975 (47), with permission]