Table 1.

Comparison between ELISA and CL method.

	ELISA	CL method
R2	0.9944	0.9936
Linear range	0.1–2 (ng/mL)	0.0035–0.5 (ng/mL)
RSD (%)	4.6% (n = 11)	4.7% (n = 11)
LOD	0.0333 (ng/mL)	0.0029 (ng/mL)