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. 2013 Dec 19;3(1):1–10. doi: 10.1530/EC-13-0070

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© 2014 The authors

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Scatterplot of C-terminal FGF23 (C-FGF23) concentrations at baseline and follow-up (A); C-FGF23 and intact FGF23 concentrations at follow-up (B);1,25(OH)₂D and I-FGF23 concentrations (C); and sTfR and C-FGF23 (D) concentrations by group. BD black triangle, history of rickets and a previously measured elevated C-FGF23 concentration; LC+ grey triangle, local controls with a previously measured high C-FGF23 concentration; LC−, local controls with a previously measured normal C-FGF23 concentration. Dotted lines at 125 RU/ml and 52 pg/ml are upper levels of normal for C-terminal and intact-FGF23 concentrations respectively.

Equations of the line:

graphic file with name ec-03-001-e005.jpg — Scatterplot of C-terminal FGF23 (C-FGF23) concentrations at baseline and follow-up (A); C-FGF23 and intact FGF23 concentrations at follow-up (B);1,25(OH)₂D and I-FGF23 concentrations (C); and sTfR and C-FGF23 (D) concentrations by group. BD black triangle, history of rickets and a previously measured elevated C-FGF23 concentration; LC+ grey triangle, local controls with a previously measured high C-FGF23 concentration; LC−, local controls with a previously measured normal C-FGF23 concentration. Dotted lines at 125 RU/ml and 52 pg/ml are upper levels of normal for C-terminal and intact-FGF23 concentrations respectively.

Equations of the line: