PTHLH and Hypercalcemia: The patient’s PTHrP level was, however, found to be elevated at 3.8 (normal <2, Mayo Medical Laboratories) pmol/L [8], and phosphate wasting (TmP/GFR was 0.59, reference range for this age 1.15-2.60) [12] suggested PTHrP-related hypercalcaemia.