Diagnostic approach to phosphopenic rickets

TRP: tubular reabsorption of phosphorus; TmP/GFR: maximal renal tubular threshold for phosphate, expressed per glomerular filtration rate; 1,25(OH)₂D: 1,25-dihydroxyvitamin D (calcitriol); XLH: X-linked hypophosphatemia; TIO: tumor-induced osteomalacia; HHRH: hereditary hypophosphatemic rickets with hypercalciuria.