Table A2.

Absolute and relative decline of growth factors over time.

Growth Factor Concentration (pg/mL)/Time of Collection	Raw Concentration (pg/mL)	Growth Factor/Protein Ratio
HGF	r = −0.39, p < 0.001 ↓	r = −0.19, p = 0.003 ↓
TGFβ1	r = −0.21, p < 0.001 ↓	r = 0.25, p < 0.001 ↑
TGFβ2	r = −0.16, p = 0.01 ↓	r = 0.20, p = 0.004 ↑
TGFβ3	r = −0.35, p < 0.001 ↓	r = −0.06, p = 0.34 ↓

↑—Positive correlation with time of collection; ↓—Negative correlation with time of collection.