[Parathyrin and calcitonin in patients with chronic renal insufficiency].

Examination of 37 patients with chronic renal insufficiency (CRI) has shown that an increment of CRI gravity is accompanied by an increased degree of disturbance of the phosphoric-calcium metabolism and parathyroid hormone and calcitonin (CT) levels. The authors regard a high calcitonin level in the presence of secondary hyperthyroidism as a result of CT retarded catabolism and an increase in the level of immunoreactive but biologically inactive CT. Multimodality conservative therapy to restore phosphoric-calcium balance in CRI should be aimed at the suppression of parathyroid gland function.