displacement of labelled 1,25 ( oh ) 2d3 by a 100-fold excess of unlabelled metabolites , expressing the fall with unlabelled 1,25 ( oh ) 2d3 as 100 % , was as follows : 25-hydroxycholecalciferol ( 25 ( oh ) d3 ) , 61 % ;
C0006657
25-hydroxycholecalciferol
C2713074
25 ( oh ) d3