Prevalence and causes of pre-donation deferrals among potential plateletpheresis donors at a blood center in Eastern China.

Abstract

In China, the platelet donation interval is 14days. The eligibility criterion of plateletpheresis donors (PD) is more stringent than that of whole blood donors, so the deferral causes are very complicated. However, the deferral prevalence and causes among PDs are not well known in China. To analyse the deferral prevalence and influencing factors during pre-donation among PDs in a blood centre in Eastern China. From December 26, 2020 to December 25, 2021, all data of potential PDs during pre-donation were extracted from the register system and collected using Microsoft Excel. The number of deferred visits and the corresponding causes were retrospectively analysed, and the re-donation rate of deferred donors was calculated. A total of 19,762 visits were included in the study. Of these 17,847 (90.3%) donated platelets successfully and 1915 (9.7%) were deferred. The prevalence of deferrals was high among those less than 35years old (p<0.05) and first-time donors (p=0). The leading cause for deferral was elevated alanine transaminase (51.4%) followed by abnormal haematological parameters (37.15%). High white blood cell count was the first deferral factor (26.9%) in abnormal haematological parameters. In more than 2 ineligible items, low haemoglobin and haematocrit simultaneously were dominant (58.3%). The re-donation rate of repeat donors (65.4%) was higher than that of first-time donors (19.3%) (p=0). The deferral prevalence in Chinese plateletpheresis donors was not high. First-time and young donors were more frequently deferred. The repeat donors should be of concern, especially with abnormal haematological parameters.