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KMID : 0378019810240030083
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New Medical Journal
1981 Volume.24 No. 3 p.83 ~ p.89
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Analytic Studies on Interlaboratory Quality Control in Clinical Chemistry
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文炳俊/Moon, Beung Joon
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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A basic role of the laboratory is to provide the quantitative and qualitative data on biologic specimens as an aid to the prevention, diagnosis and treatment of human disease. Any analysis performed by a laboratory are subject to various factors; therefor all laboratories have a system for assessing their work. The X-R chart which was introduced by Levey and Jennings is the most popular method of intralaboratory quality control. Using a different method, the author has summarized data concerning serum enzymes (alkaline phosphatase, GOT, and GPT) obtained from two general hospital laboratories A and B by means of "the Average of Normals" method of Hoffman and then plotted this
data into a twin plot chart.
The results obtained were as follows:
1. The normal ranges of alkaline phosphatase, GOT and GPT in laboratory A were 0.9^2.4 unit, 0^54.5 unit and 0^43.5 unit, respectively, while those in laboratory B were 0.9^2.4 unit, 0-46 unit and 0-39 unit, respectively.
2. The accuracy of alkaline phosphatase measurements was variable in both laboratories A and B.
3. The accuracy and precision of GOT measurements were variable in both laboratories A and B.
4. The accuracy of GPT measurements was variable in both laboratories A and B.
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