RESUMO
【Objective】 To understand the current situation of blood components distribution in domestic prefecture-level blood stations through analyzing the components distribution data of 24 prefecture-level blood stations in China. 【Methods】 The data of components distribution of 24 blood stations from 2017 to 2020 as well as the data of blood deployment of 24 blood stations from 2019 to 2020 were collected and analyzed. 【Results】 From 2017 to 2020, positive annual growth in red blood cells, plasma and cryoprecipitate was observed in 22, 19 and 15 out of the 24 blood stations, and the annual growth median rate of above three components was 5.24%, 3.80% and 3.25%, respectively. Among the 24 prefecture-level blood stations, 23 carried out the preparation of cryoprecipitate. 【Conclusion】 The distribution of red blood cells, cryoprecipitate and plasma in prefecture-level blood stations is increasing year by year. However, there is a overstock of plasma, and most blood stations need blood employment.
RESUMO
Objective To evaluate the necessity and feasibility of nucleic acid test for donors blood screening .Methods From July 1 ,2011 to December 31 ,2014 ,a total of 170 316 blood samples which were negative in enzyme-linked immunosorbent assay (ELISA)and qualified in aianine aminotransferase detection ,were selected in this study stochastically .All the samples were detected hepatitis B virus(HBV) ,hepatitis C virus(HCV) ,human immunodeficiency virus(HIV) by nucleic acid amplification technology (NAT) .NAT positive samples were reconfirmed in National Center for Clinical Laboratories(NCCL) .Results A total of 160 cases of nucleic acid reactive samples were found out ,the total response rate was 0 .09% ,The response rate of Roche nucleic acid detec-tion system was 0 .10% ,response rate of David nucleic acid detection system was 0 .08% ,there was no significant difference be-tween the two methods(P>0 .05) .In 27 cases of specimens ,14 cases were confirmed as HBV DNA positive ,no HCV RNA and HIV RNA were detected ,the confirmed positive rate was 51 .85% .There were 2 samples detected by chemiluminescence HBsAg reactivity .Conclusion ELISA screening of blood donors has missing phenomenon ,nucleic acid detection method could be used as an effective supplement of the ELISA ,could improve the safety of blood for clinical use ,detection sensitivity is better than ELISA .