Table 1.

Effect of sample volume on the recovery efficiency of platelets.

Blood Volume	Container	First Spin	Second Spin	Mean Platelet Recovery (%) (±SD)	Mean Factor Concentration of Platelets Fc (Pt)
5 ml	5 ml tube	100×g x 15 min	1600×g x 20 min	63 (5.2)	4.2 (1.2)
10 ml	15 ml tube	100×g x 15 min	1600×g x 20 min	98 (1.4)	6.9 (0.8)
15 ml	15 ml tube	100×g x 15 min	1600×g x 20 min	82 (4.5)	5.8 (0.4)

SD Standard Deviation.