Annual Report on the External Quality Assessment Scheme for Immunohematology Testing in Korea (2016)

Abstract

We report here the 2016 results of surveys on an external quality assessment (EQA) for immunohematology testing in Korea carried out in 2016. The proficiency testing specimens were prepared at Ajou University Hospital, and the specimens were sent to participants biannually. The average accuracy rates (N=the number of participants) for ten different test items on the regular survey were as follows: ABO typing, 98.9%–99.7% (N=627): RhD typing, 98.6%–99.8% (N=607): crossmatching, 90.1%–98.1% (N=454): ABO subtyping, 92.7%–93.0% (N=42): Rh CcEe antigen testing, 97.8%–100.0% (N=46): weak D test, 70.8%–73.6% (N=91): antibody screening, 96.6%–100.0% (N=267): direct antiglobulin test (DAT) using a polyspecific reagent, 92.2%–99.6% (N=49): DAT using an immunoglobulin G monospecific reagent, 84.1%–100.0% (N=68): DAT using a C3d monospecific reagent, 80.0%–100.0% (N=68): antibody identification, 96.7%–99.1% (N=118): and ABO antibody titration, 82.4%–100.0% (N=42). Excellent results for the 2016 EQA for immunohematology testing were obtained, except for those of the weak D test. The EQA for immunohematology testing in 2016 should be helpful for improving the quality of participating laboratories.

2016년에 시행된 수혈의학검사에 대한 신빙도조사결과를 보고하고자 한다. 검체는 아주대학교병원에서 직접 제조하여 참여기관들에게 연 2회 발송하였다. 10개의 평가종목에 대한 정답률은(평균 참여기관 수) 다음과 같았다. ABO 혈액형검사 98.9%-99.7% (627개), RhD 혈액형검사 98.6%-99.8% (607개), 교차시험검사 90.1%-98.1% (454개), ABO 아형 혈액형 92.7%-93.0% (42개), Rh CcEe 항원검사 97.8%-100.0% (46개), 약 D검사 70.8%-73.6% (91개), 비예기항체 선별검사 96.6%-100.0% (267개), 직접항글로불린검사는 다특이성 92.2%-99.6% (249개), 단특이성 immunoglobulin G 84.1%-100.0% (68개), 그리고 단특이성 C3d 80.0%-100.0% (68개), 비예기항체 동정검사 96.7%-99.1% (118개), 그리고 ABO 항체 역가검사 82.4%-100.0% (42개)였다. 약 D검사를 제외한 2016년도 수혈의학검사의 신빙도결과는 우수한 편이었으며, 참여 검사실의 질 향상에 기여하였다.