. 2003 May 22;12(4):400–407. doi: 10.1007/s00586-003-0548-5

Table 3.

Concentrations of platelets, platelet-derived growth factor (PDGF), and transforming growth factor-β (TGF-β) in whole blood and AGF concentrate: mean values and standard deviations (SD)

	Whole blood	AGF concentrate	P-value^a
Platelet count (cells/ml)	270,479 (55,098)	1,311,739 (54,038)	0.0001
PDGF (ng/ml)	28.9 (4)	170.9 (4.9)	0.0001
TGF–β (ng/ml)	49.6 (4.8)	199.4 (6.3)	0.0001

^a Differences were assessed using a paired t-test. Due to some non-normality in the platelet variable, Wilcoxon's Signed Rank test was also performed, with the same P-value as the t-test