Table 2.

Precision of the NanoLuc bioluminescence assays on three separate days (E1, E2, E3). Three concentrations were determined by bioluminescence measurement. Data are presented as mean (± standard error). CFU colony-forming unit

Concentration (CFU/mL)	Determined concentration (CFU/mL)			Coefficient of variation (%)
	E1	E2	E3	E1	E2	E3
1.20 × 108	1.81 (± 0.06) × 108	1.27 (± 0.04) × 108	1.16 (± 0.01) × 108	7.47	8.48	2.04
7.00 × 107	6.93 (± 0.29) × 107	8.94 (± 0.28) × 107	8.11 (± 0.28) × 107	10.32	7.69	8.51
2.50 × 107	2.81 (± 0.21) × 107	2.51 (± 0.19) × 107	3.49 (± 0.12) × 107	18.05	18.98	8.24