“…In Europe, the plateletpheresis‐associated PLT loss per donor is indirectly restricted by the maximum limit of 26 apheresis procedures per year and a relative low minimum number of at least 2 × 10 11 PLTs/TU 13,14 . Hence, any intensification of the procedure, either by increasing the number of PLTs, for example, to at least 4.0 × 10 11 per TU, 10,15 or by introducing TP with a minimum PLT content of at least 2.5 × 10 11 to 3.5 × 10 11 per TU, 5,9,16‐18 will inevitably lead to higher PLT losses for donors. In an attempt to establish a possible safety margin for a TP program, a single‐center observational pilot trial was performed at Hannover Medical School in 2005 and included 1132 DPs and 442 TPs 18 .…”