Table 5.

Thrombin generation parameters of group A and group O platelets. Samples were mixed with autologous plasma and O plasma with an anti-A titer of 1:1024 for both groups; O plasma with low anti-A titers (range of 1:8–1:64) and B plasma in group A samples; and A plasma in group O samples.

	Group A PLT (N = 11)^				Group O PLT (N = 6)^
	Autologous Plasma	O Plasma (anti-A range of 1:8–1:64)	B Plasma	O Plasma (Anti-A 1:1024)	Autologous Plasma	O Plasma (Anti-A 1:1024)	A Plasma
Lag time (min)	8.2 ± 0.6	8.4 ± 0.9	6.5 ± 0.7*	6.4 ± 1.4*	6.4 ± 0.8	5.9 ± 0.5	6.6 ± 1.2
Time to Peak (min)	17.6 ± 0.7	16.8 ± 1.3	15.2 ± 1.5*	15.7 ± 2.3*	12.8 ± 3.4	13 ± 2.4	13.2 ± 3
Peak (nM)	139 ± 25	144 ± 31	159 ± 37	107 ± 14*	145 ± 37	132 ± 47.5	135 ± 45
ETP (nM* min)	2006 ± 218	1678 ± 731	1910 ± 720	1614 ± 212*	1589 ± 195	1547 ± 232	1544 ± 176
Velocity Index (nM/min)	14.9 ± 3.3	17.2 ± 3.6	18.6 ± 5.1	11.6 ± 1.8*	26.6 ± 15.2	22.8 ± 18.6	23.8 ± 15.4

PLT, platelet; ETP, Endogenous thrombin potential (the area under the thrombin concentration versus time curve).

^{^}Data are presented as mean ± standard deviation.

^*Values are statistically significant (p < 0.05) in comparison to the autologous plasma values.