Table 1. Comparison of sensitivity and reproducibility between NLFOA and ELISA.

Assay	Sensitivity (pg/mL)			Reproducibility (% of CV)
	NLFOA	ELSA	P	NLFOA	ELSA	P
Intra-assay	0.9 ± 0.2	11 ± 1.4	<0.0001	7.3 ± 0.7	8.6 ± 0.8	0.03
Inter-assay	0.8 ± 0.3	10.6 ± 1.7	<0.0001	7.1 ± 0.4	8.7 ± 0.8	0.01
Overall	0.9 ± 0.2	10.8 ± 1.5	<0.0001	7.2 ± 0.6	8.6 ± 0.8	<0.0001

The values are shown as mean ± SD of the data from five independent experiments.