Transfused VWF fragments exhibit t1/2 of ∼1 to ∼4 hours (hrs). PPP isolated from hydrodynamically injected Vwf−/− mice (n = 5-11 mice per VWF fragment) by cardiac puncture was pooled and transfused into 4 to 9 naive Vwf−/− mice. Residual VWF levels (mean ± SD) in recipient mice were normalized to the 5-minute time point (set as 100% [%5min]). Measurements were nonlinearly regressed to predict the clearance of each FVIII-stabilizing VWF fragment (curves).