Figure 5.

Correlations between clot retraction and plasma levels of fibrinogen: Plasma fibrinogen levels were measured for each donor by an automatic blood analyzer; no overall correlation was found with clot retraction (A, linear regression analysis, n = 33). Samples were further divided into three groups based on their fibrinogen levels: group A had fibrinogen levels less than 250 μg/mL; group B had fibrinogen levels between 250 and 350 μg/mL; group C had fibrinogen levels greater than 350 μg/mL. There was no significant difference in clot retraction among these three groups (B, one-way ANOVA, n = 33, p > 0.05).