Abstract
Hydroxyethyl starch (HES) was used as sedimenting agent in the course of granulocyte collection on seventeen normal donors, using the continuous flow cell separator (CFCS). No clinical bleeding was noted in any of the donors. In spite of a 21 per cent mean reduction in postcollection platelet count, all donors had platelet counts within normal limits precollection and postcollection. Postcollection platelet adhesiveness increased in five donors, remained the same in one donor and declined in ten donors. Except in one donor there was no change in previously normal platelet aggregation to adenosine diphosphate or collagen. In the dose used, 500 ml, the infusion of 6% hydroxyethyl starch as an adjunct to granulocyte separation using the continuous flow cell separator does not appear to adversely affect platelet number and function.
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