Effect of red blood cell parameters and blood donation interval on ferritin level in apheresis platelet donors with ferritin deficiency / 中国输血杂志

ABSTRACT

【Objective】 To study the effect of changes in red blood cell parameters and blood donation interval on ferritin level in platelet donors with ferritin deficiency, so as to provide experimental evidence for formulating targeted blood donor care strategies. 【Methods】 100 regular male platelet apheresis donors in April 2020 were selected to test the ferritin and red blood cell parameters. Blood donors were classified according to the annual blood donation numbers 3~10, 11~15, and 16~24, and the difference of iron deficiency rate among groups was analyzed. They also were classified according to the detection value of ferritin iron deficiency donors versus SF normal donors, and the changes of Hb, MCV, MCH and MCHC values of them were compared. The iron deficiency donors were stratified by donation time January to March 2019, April to June 2019, July to September 2019, October to December 2019 and January to April 2020, so as to compare the changes of Hb, MCV and MCH values among each group. The iron deficiency donors, continued the donation afterwards, were divided into interval-extended donors (minimum donation interval of 30 days) and normal ones (minimum donation interval of 14 days), and blood donation from May to December 2020 was intervened and observed. In December 2020, serum ferritin was tested again for iron deficiency donors to analyze the changes in SF between two groups. 【Results】 The incidence of iron deficiency in three groups with different donation frequency was 7.5%, 22.5% and 40.0%, respectively(P0.05), and original 13.89±4.66 vs current 35.92±5.20 in the extended ones(P<0.05). 【Conclusion】 The incidence of iron deficiency in apheresis platelet donors increased as blood donation frequency elevated. The Hb, MCV, MCH and MCHC value of iron deficiency donors decreased while the dispersion of pre-collection Hb, MCV and MCH decreased. MCV and MCH are superior to Hb in early-reflection of metabolism status of red blood cell. It is recommended that iron deficiency donors with Hb less than 130 g/L should reduce the frequency of donation. Extending the donation interval can increase the SF level of iron deficiency donors.Dynamic monitoring of ferritin and related red blood cell parameters should be carried out by blood banks to customize the donation interval.