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KMID : 0985420100320010095
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Laboratory Medicine and Quality Assurance
2010 Volume.32 No. 1 p.95 ~ p.101
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Annual Report on External Quality Assessment in Blood Bank Tests in Korea (2009)
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Abstract
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Background:We report here the results of surveys for external quality assessment of blood bank tests performed in 2009.
Methods: Survey specimens were sent three times to 488, 491 and 490 participant institutes, and the response rates for the 1st, 2nd and 3rd trial were 97.7%, 98.0%, and 98.0%, respectively. Test items for the surveys were ABO grouping, Rh (D) typing, crossmatching, direct antiglobulin test, antibody screening and antibody identification test.
Results: The average accuracy rates of ABO grouping and Rh typing were 99.6-100% and 98.5-100%, respectively. In crossmatching test, the accuracy rates were 99.3-99.8% for the compatible samples, 92.7-100% for the incompatible samples, and 92.6-93.1% for the samples which could be detected as incompatible only by antiglobulin method. The accuracy rates of direct antiglobulin test were 98.5-100% for negative samples and 98.1-98.8% for positive samples. The correctresults were reported by 98.0-100% of the surveyed institutions for antibody screening test and 82.9-100% for antibody identification test. Nineteen institutions gave repeatedly incorrect answers for crossmatching test. Eight institutions out of them gave incorrect answers for all the test specimens sent out 3 times last year
Conclusions: The overall results of this survey were good, however, it is required that the institutions where the incorrect results were reported should perform corrective actions for quality improvement.
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KEYWORD
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Blood bank tests, External quality assessment, Antiglobulin test, Crossmatching
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