“However, significant …-PTH after calcium citrate administration at 1 h (17.1+/-…/ml, P=.023), and after calcium carbonate administration at 2 h (14.2+/-2.5 pg/ml, P=.000), was noted when … individual basal level (21.2+/-2.5 and 19.3+/-2.4 pg/ml, respectively).”