Table 2.

Components of human whole blood and PRPs

	Platelet concentration (109/L)	Leukocyte concentration (109/L)	PDGF-AB concentration (ng/mL)	TGF-β1  concentration (ng/mL)	VEGF concentration (pg/mL)	IL-1β concentration (pg/mL)	TNF-α concentration (pg/mL)
WB	228.30 ± 50.50	6.18 ± 1.57	8.87 ± 4.67	23.83 ± 12.07	35.92 ± 8.51	11.68 ± 5.90	9.31 ± 5.05
L-PRP	1436.70 ± 257.97	34.58 ± 8.48	42.54 ± 12.65	122.22 ± 43.42	157.89 ± 33.64	93.33 ± 69.88	54.67 ± 27.10
P-PRP	1461.80 ± 189.14	0.18 ± 0.18	43.71 ± 14.39	126.95 ± 35.96	151.82 ± 29.29	3.83 ± 2.61	2.20 ± 0.78
Comparison, P value
ANOVA	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*
WB vs. L-PRP	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*
WB vs. P-PRP	<0.001*	0.036*	<0.001*	<0.001*	<0.001*	>0.999	0.979
L-PRP vs. P-PRP	>0.999	<0.001*	>0.999	>0.999	>0.999	<0.001*	<0.001*

The asterisks indicate the significant differences between groups on ANOVA and with use of the Bonferroni post hoc test for multiple comparisons (P < 0.05)

WB whole blood