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KMID : 0378019810240020089
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New Medical Journal
1981 Volume.24 No. 2 p.89 ~ p.95
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Analytic Studies on Interlaboratory Quality Control in Clinical Chemistry
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姜泳圭/Kang, Young Kyu
金仁仙/李昌珪/白承龍/Kim, In Sun/Lee, Chang Kyu/Paik, Seung Yong
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Abstract
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The methodology of quality control in the clinical chemistry has been steadily developed until now and quality control program becomes an indispensible tool for the measurement of the efficiency of the laboratory medicine. In Korea, quality control has been mainly performed through the Korea Society of Quality Control in Clinical Pathology and X-R chart is the most popular method among the intralaboratory quality control programs.
Author summarized the data of sodium, potassium, chloride and calcium from two laboratories using "the Average of Normal" of Hoffman and then plotting them into the twin plot method.
The results obtained were as follows:
1. Normal ranges of sodium, potassium, chloride and calcium in-laboratory A were 119-14lmEq/l, 2.8-4.7mEq/l, 89.2-110mEq/l and 6.7-9.6 mg/dl and the values in laboratory B were 120-141mEq/l, 2.8-4.8mEq/l, 90-110mEq/l and 6.9-10.4mg/dl respectively.
2. Accuracy and precision for sodium were variable in both laboratories A and B.
3. In laboratory A, precision was variable, whereas accuracy in laboratory B was variable for potassium.
4. Both accuracy and precision for chloride were excellent in both laboratories A and B. 5. Accuracy in laboratory A and precision in laboratory B were problem in chloride quality control.
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