the role of the parathyroid hormone on the activity of 1-hydroxylase is illustrated by the results of the titration in parathyroid dysfunctions : decrease of the mean level in hypoparathyroidism ( 18 +/- 6.9 pg/ml ) , and on the contrary , a significant increase in hyperparathyroidism ( 56.6 +/- 15.4 pg/ml ) despite of a spread of the individual values .
C0030517
parathyroid dysfunctions
C0020502
hyperparathyroidism