Table 2. Correlation between each time point and time zero, demonstrating the variation in plasma nucleosome concentrations.

Processing time	Pearson's Correlation	Kendall's Tau
Time 0	1.00	1.00
15 min	0.98	0.80
30 min	0.98	0.80
45 min	0.96	0.80
60 min	0.96	0.80
120 min	0.79	0.60
4 hours	0.77	0.60
8 hours	0.46	0.20
24 hours	0.65	0.20

Both measures of correlation remain high until 60 minutes and then reduce for longer processing times.