Table 1.

Abundance ratios of biomarker candidates from OA serum samples compared to control donors using LC-MRM quantitation

Protein ID	Peptide ID	K/L II/Ctrl	t-test	K/L IV/Ctrl	t-test

Haptoglobin	TEGDGVYTLNNEK	1,485	0,039	1,538	0,045
	VTSIQDWVQK	1,305	0,023	1,316	0,048
Von Willebrand factor	YTLFQIFSK	1,633	0,052	2,083	0,047
	AHLLSLVDVMQR	1,567	0,025	2,374	0,036

P-values were calculated using Student's t-test. K/L: Kellgren and Lawrence scale; CTRL: control.