From: Reliability, stability during long-term storage, and intra-individual variation of circulating levels of osteopontin, osteoprotegerin, vascular endothelial growth factor-A, and interleukin-17A
Intra-class correlation (ICC) [95% CI]
OPN
0.68 [0.55, 0.80]
OPG
0.11 [0.021, 0.43]
VEGF-A
0.83 [0.73, 0.90]