Table 1.

Figures of Merit Comparison for SERS and ELISA.

Parameter	SERS		ELISA
	MMP-7	CA 19-9	MMP-7	CA 19-9
Bmaxa	14900	3810	6.14	5.77
Kd (M)	1.96×10−10	6.52×10−11	1.06×10−9	7.95×10−10
Nsa	131	130	0.0480	0.116
R2	0.989	0.991	0.999	0.999
Blank σa	2.00	3.19	0.00212	0.0113
LOD (pg/mL)	2.28	34.5	31.8	987
LOD (M)	78.6×10−15	164×10−15	1.10×10−12	4.70×10−12

^aUnits for these parameters are cts s⁻¹ for SERS and absorbance units for ELISA.