“…However, the latter no longer represents the standard preparation of modern blood banking [1,8,9,10]. On the basis of the results of Ferner et al [7] and taking into account further published evidence [8,9,11,14,15,16,18,19,20], we have proposed two approaches to deal with the problem of donor medication. Advantages of the ®rst approach, which guarantees a reduction of any donor medication to the level of 3% of the therapeutic drug concentration, are its simplicity, its wide safety margin and its easy applicability.…”