the effect of calcitonin ( 160 mrc units given 45 min before the test ) on calcium absorption , in 5 patients with paget 's disease or osteoporosis appears as biphasic : in the first hour depressing calcium absorption and then in the second and third hours increasing the absorption , suggesting a hyperparathyroid state secondary to the calcitonin effect .
C0029401
paget 's disease
C0006668
calcitonin