J Lab Med Qual Assur.  2015 Jun;37(2):47-55. 10.15263/jlmqa.2015.37.2.47.

Annual Report on the External Quality Assessment Scheme for Blood Blank Tests in Korea (2014)

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 School of Medicine, Daejeon, Korea.
  • 4Department of Laboratory Medicine, Severance Hospital, Yonsei University School 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, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
  • 8Department of Laboratory Medicine, Ilsan Paik Hospital, Inje University, Goyang, Korea.
  • 9Blood Laboratory Center Central, Korean Red Cross, Seoul, Korea.
  • 10Gyeonggi Red Cross Blood Center Central, Korean Red Cross, Suwon, Korea.

Abstract

We report here the results of surveys on external quality assessment (EQA) of blood bank tests in Korea carried out in 2014. The proficiency testing specimens were prepared at Ajou University Hospital and the response rates for the 1st and 2nd trials were 94.3% (537/549) and 96.0% (545/554), respectively. No answers were considered incorrect, and the average accuracy rates of six different test items on the regular survey were as follows: ABO grouping, 98.5% to 100.0%; RhD typing, 98.1% to 99.4%; crossmatching, 91.2% to 99.6%; direct antiglobulin test (DAT) using a polyspecific reagent, 96.7% to 98.4%; DAT using an immunoglobulin-G monospecific reagent, 93.8% to 98.7%; DAT using a C3d monospecific reagent, 89.5% to 98.7%; unexpected antibody screening test, 96.2% to 100.0%; and antibody identification test, 69.8% to 100.0%. Test items for the pilot survey were reactivities to anti-A1 and anti-H, Rh subgrouping, and ABO antibody titration. Except for the result of the antibody identification test for specimens with multiple antibodies, we obtained excellent survey results for the EQA of blood bank tests carried out in 2014. In addition, the number of participating institutes was higher in 2014 than in 2013. The EQA of blood bank tests in 2014 should be helpful for improving the quality of the participating laboratories.

Keyword

Blood banks; Laboratory proficiency testing

MeSH Terms

Academies and Institutes
Antibodies
Blood Banks
Coombs Test
Korea
Laboratory Proficiency Testing
Mass Screening
Antibodies
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