PTH and hypophosphatemia: During clinical and laboratory monitoring at the age of 13, hypercalcemia (1.57 nmol/l), hypophosphatemia (3.7 mg/dl), calciuria 34.5 mg/dl (RV 6–21 mg/dl) were identified asymptomatically, and parathyroid hormone (PTH) dosed at 91.3pg/ml (RV 10–68 pg/ml).