Table 2.

Limit of Detection (LOD), intra/inter-assay coefficient of variation (CV) of the examined biomarker ELISA assays.

Measured biomarker	LOD	Intra-assay CV (%)	Inter-assay CV (%)
MMP-8	0.025 ng/ml	3.2	7.5
MMP-9	0.01 ng/ml	5.2	7.8
TIMP-1	0.05 ng/ml	2.4	6.2
LBP	0.03 ng/ml	6.2	9.8
MMP-2	0.01 ng/ml	4.5	6.6
MMP-3	0.1 ng/ml	4.6	8.8
OPG	0.03 pmol/l	3.5	5.8
IL-1b	0.4 pg/ml	3.5	6.0
IL-8	0.5 pg/ml	4.4	7.2
HGF	10 pg/ml	6.3	9.2