First- and second-generation immunometric PTH assays during treatment of hyperparathyroidism with cinacalcet HCl

These data show that PTH can be monitored with either iPTH or biPTH assays during therapy with cinacalcet, and that cinacalcet therapy does not exert a major influence on the ratio between PTH(1-84) and large, N-terminally truncated PTH fragments.