the characteristic features are rickets , short stature , increased renal phosphate clearance ( the ratio between the maximal tubular reabsorption rate for phosphorus and the glomerular filtration rate [ tmp/gfr ] is 2 to 4 s.d . below the age-related mean ) , hypercalciuria ( 8.6 mg of urinary calcium per kilogram of body weight per 24 hours vs. the upper normal value of 4.0 ) , normal serum calcium levels , increased gastrointestinal absorption of calcium and phosphorus , an elevated serum concentration of 1,25-dihydroxyvitamin d ( 390 +/- 99 pg per milliliter vs. the upper normal value of 110 ) , and suppressed parathyroid function ( an immunoreactive parathyroid hormone level of 0.33 +/- 0.1 ng per milliliter and a cyclic amp level of 1.39 +/- 0.12 nmol per deciliter of glomerular filtrate vs. the lower normal values of 0.3 and 1.5 , respectively ) .
C1521970
features
C0005910
body weight