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J Clin Pathol Qual Control. 2002 Jun;24(1):75-81. Korean. Review.
Kwon SW , Kim DW , Han KS , Kim HO , Seo JS , Cha YJ , Jeon DS , Park HJ , Oh YC , Kwon KC , Ryang DW , Hwang YS .
Blood Banking Subcommittee, The Korea Association of Quality Assurance for Clinical Pathology, Seoul, Korea.

We analyzed the results of surveys for external quality assessment of blood bank tests, which were carried out in 2001. Response rates for the 1st, 2nd and 3rd trial were 91.7%, 91.8% and 92.6%, respectively. Test items for the surveys were ABO grouping, Rh(D) typing, crossmatching, direct antiglobulin test, antibody screening and identification test. Both of the average accuracy rates of ABO grouping and Rh typing were 99.9%. In crossmatching test, the accuracy rates were 94.3-99.7% for the compatible samples, 73.7-99.7% for the incompatible samples, 88.0% for the samples which were incompatible in albumin phase, and 73.7% for the samples which could be detected as incompatible only by antiglobulin method. The accuracy rates of direct antiglobulin test were 97.5-99.6% for negative samples and 93.0-97.1% for positive samples. The correct results were reported by 97.2-100% of the surveyed institutions for antibody screening test and 80.0-100% for identification test.

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