Table 4. Precision and accuracy of free ligand assay in ligand-depleted rat serum.

	pM
Controls	11.5	5.9	0.73	0.37
Sample 1	11.3	6.2	0.57	0.23
Sample 2	10.4	5.4	0.64	0.21
Sample 3	9.8	5.8	0.65	0.34
Sample 4	9.9	5.9	0.69	0.22
mean	10.4	5.8	0.64	0.25
SD	0.7	0.4	0.05	0.06
%CV	6.8	6	8	23.3
% Theoretical	90	99	87	68