Another recent study shows similar results in adults, with an intact FGF23 cut point of 27 pg/mL distinguishing FGF23-mediated from FGF23-independent hypophosphatemia, and a cFGF23 cut point of 90 RU/mL identifying specifically TIO from FGF23-independent hypophosphatemia [122]. Here, FGF23 is linked to hypophosphatemia.