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KMID : 0985420140360010001
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Laboratory Medicine and Quality Assurance
2014 Volume.36 No. 1 p.1 ~ p.11
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Annual Report on External Quality Assessment inDiagnostic Hematology in Korea (2013)
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Kwon Kye-Chul
Kim Ji-Myung
Ra Gee-Su
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Abstract
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Diagnostic hematology subcommitee of The Korean Association of Quality Assurance for Clinical Laboratory performed laboratory proficiency testing for blood cell count, cell morphology and coagulation tests in 2013. Four trials for blood cell count and cell morphology and 2 trials for coagulation tests were executed. Average 1,308, 494, and 558 laboratories participated in the surveys of blood cell count, cell morphology and coagulation tests, respectively. The overall reply rates were 95.78%, 97.75%, and 97.38%, respectively. The homogeneity of external quality materials was stable (less than 3%) and status of use of the instrument and reagents was similar to those of the previous year. The CVs in white blood cell count, red blood cell count, platelet count, hemoglobin, and hematocrit were 3.15%, 2.00%, 5.10%, 1.81%, and 2.71%, respectively. For cell morphology, most showed concordant rate >80%. CVs of coagulation tests showed difference depending on instruments or reagent groups. An educational workshop on hands-on experience in diagnostic hematology was held in July. In 2013, the number of participating laboratories is more increased and the performance of surveys of hematology tests is similar performance compared to previous year. In addition, the revision in the way of evaluation of coagulation tests is needed.
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KEYWORD
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Laboratory proficiency testing, Blood cell count, Peripheral blood smear
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