Fig. 3: Preservation tubes do not show robust performance over time.

Per blood collection tube and per performance metric, a summary of mean fold-changes (FC) between immediate processing and the 2 selected processing time intervals is given for both mRNA (a) and miRNA (b) profiling. Ideally, the mean FC of the performance metrics approaches 1, indicating that there is little change over time. Per tube type (preservation and classic) tubes are ranked by mean value across all metrics from low (top) to high (bottom). Note that different donors were sampled and that tubes were processed at different time intervals for preservation and classic blood tubes.