J Lab Med Qual Assur.  2016 Jun;38(2):59-67. 10.15263/jlmqa.2016.38.2.59.

Annual Report on the External Quality Assessment Scheme for Blood Bank Tests in Korea (2015)

Affiliations
  • 1Department of Laboratory Medicine, Ajou University School of Medicine, Suwon, Korea. limyoung@ajou.ac.kr
  • 2Department of Laboratory Medicine, Asan Medical Center, Ulsan University School of Medicine, Seoul, Korea.
  • 3Department of Laboratory Medicine, Chungnam University Hospital, Daejeon, Korea.
  • 4Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
  • 5Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
  • 6Department of Biomedical Laboratory Science, Shinhan University, Uijeongbu, Korea.
  • 7Department of Laboratory Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea.
  • 8Department of Laboratory Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea.
  • 9Blood Laboratory Center Central, Korean Red Cross, Seoul, Korea.
  • 10Gyeonggi Red Cross Blood Center, Korean Red Cross, Suwon, Korea.

Abstract

We report here the results of the external quality assessment scheme (EQA) of blood bank tests in Korea carried out in 2015. The proficiency testing specimens used in the survey were prepared at Ajou University Hospital. The response rates from participating laboratories for the first and second trials were 98.7% (542/549) and 98.2% (544/554), respectively. No answers to tests were considered incorrect, and the average accuracy rates for six different test items on the standard survey were as follows: ABO grouping, 99.4% to 100.0%; RhD typing, 99.4% to 100.0%; crossmatching, 93.6% to 99.0%; direct antiglobulin test (DAT) using a polyspecific reagent, 92.9% to 98.3%; DAT using an IgG monospecific reagent, 94.6% to 100.0%; DAT using a C3d monospecific reagent, 84.2% to 98.6%; unexpected antibody screening test, 94.5% to 100.0%; and antibody identification test, 93.8% to 100.0%. We performed a pilot survey on reactivities to A1 (54 responses) and H (50 responses); Rh C, c, E, and e antigen testing (47 responses); and ABO antibody titration (10-34 responses). We obtained excellent results for this EQA, and these results will be helpful for improving or maintaining the quality of the participating laboratories.

Keyword

Blood bank; Laboratory proficiency testing
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