In primary hyperparathyroidism, serum phosphorus levels are abnormally low as a result of decreased renal tubular phosphorus reabsorption. This contrasts with secondary hyperparathyroidism, in which serum phosphorus levels are generally elevated because of renal disease.
|Adult||:|| 0.8-1.5 mmol/L
|Up to 1 month||:|| 1.25-2.6 mmol/L
|1-12 months||:|| 1.3-2.4 mmol/L
|1-16 years||:||0.9-1.8 mmol/L|
SST (gold top)