Table 9. TCF concentration: Precision averages, standard deviations, and %CV.

	2 ng/mL	25 ng/mL	50 ng/mL	100 ng/mL	200 ng/mL
Average	2.143	26.19	56.18	108.5	219.9
St. Dev.	0.311	2.93	6.93	14.7	29.5
%CV	14.5	11.2	12.3	13.5	13.4