Relevant Aspects of Centrifugation Step in the Preparation of Platelet-Rich Plasma

Table 1

Comparison of the recovery efficiencies of plasma, platelets, and WBC in the upper layer after the first spin step of 100 ×g for 6 or 10 min. Volume of WB: 3.5 mL.

	Recovery efficiencies (%) (±SD)			WBC composition (±SD)
	Plasma	Platelets	WBC	Lymphocytes (10^3/mm^3)	Monocytes (10^3/mm^3)	Granulocytes (10^3/mm^3)
Blood	—	—	—	1.72±0.64	0.31±0.14	4.01±1.71
10 min	66.6±4.5	79.0±7.8	8.7± 3.7	0.71±0.34	0.062±0.05	0.32±0.15
6 min	43.9±6.2	72.3±2.9	26.6± 11.4	3.18±0.77	0.47±0.34	1.20±0.43