Table 1.

Markers of platelet activity measured using arterial and venous blood sources

	Source of blood		ICC**	95%CI	Spearman’s rho	p-value
	Artery*	Vein*
Hematology analysis
Platelet count, × 109/L	172 [144–225]	175 [142–225]	0.95	0.92–0.97	0.92	<0.001
MPV, fL	10.4 [9.8–11.0]	10.6 [10.0–11.0]	0.98	0.97–0.99	0.95	<0.001
IPF, %	4.7 [3.1–6.1]	4.9 [3.1–6.0]	0.93	0.89–0.96	0.89	<0.001
Flow cytometric markers
MPA, %	18.1 [13.9–24.4]	19.9[12.3–31.2]	0.71	0.57–0.81	0.65	<0.001
LPA, %	9.0[7.2–12.2]	10.0[7.1–12.2]	0.76	0.64–0.84	0.75	<0.001
Plasma markers
p-selectin, ng/mL	61.4 [47.3–76.1]	69.3[56.3–89.5]	0.57	0.39–0.71	0.68	<0.001

^*data presented as median [interquartile range]

^**all p-values <0.001

CI = confidence interval, ICC = intraclass correlation coefficient, IPF = immature platelet fraction, LPA = leukocyte platelet aggregation, MPA = monocyte platelet aggregation, MPV = mean platelet volume