Table 4 Analysis of viscoelastic parameters in albumin-based colloid solutions enriched with factor XIII (FXIII), prothrombin complex concentrate (PCC) and fibrinogen (FGN). Different FXIII concentrations (0.1, 0.5, 1, 2, 4, 8 IU/ml) were combined with fixed PCC and FGN concentrations of 1 IU/ml and 4 g/l, respectively. The albumin concentration was maintained stable at 5%. Negative controls for FXIII- free solutions are represented by the corresponding compositions shown in Tables 2 and 3. A minimum of three repeats for each concentration step was performed. The values in bold letters reflect the optimal FXIII response for CRF composition