Table 1.

Analytical parameters for different initial rate estimation.

Parameter	Initial rate estimation
	vECL1-2	vECL1-3	vECL2-3
Linear range / (M)	2 × 10−5 – 2 × 10−4	8 × 10−6 – 2 × 10−4	8 × 10−6 – 2 × 10−4
Intercept (b) / (V/s)	-0.5	0.5	-2.5
Slope (a) / (V·s−1·M−1)	155.8	195.4	137.6
r2	0.938	0.998	0.925
Detection limit / (M)	3.2 × 10−6	2.4 × 10−6	1.8 × 10−5
RSD lactate (%) 2 × 10−4 M	11.1%	10.3%	11.0%