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KMID : 0378019830260030115
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New Medical Journal
1983 Volume.26 No. 3 p.115 ~ p.122
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An Analytical Study of the Internal Quality Control Status with the External Quality Control Program
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崔鍾元/Choi, Jong Woon
李昌珪/金仁仙/白承龍/Lee, Chang Gui/Kim, Insun/Paik, Seung Yong
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Abstract
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The clinical laboratory quality control has been almost daily routinized ever since the first notion brought from the industrial merchant quality surveillance. The progress has been mainly attributed by remarkable development of sophisticated instrument, ever changing methodologies and refined reagents. Despite the progress, the status of the quality control program is somewhat differ from one subject to another even in a same laboratory.
In a way, it is not deniable that much emphasis has been centered on the external quality control program rather than on the internal quality control program development which should actually be considered prior to the external quality control program.
The study was attempted, therefore, on a well-initiated internal quality control status analysis of biochemistries at the A hospital laboratory, a participating member of the Korean Society of Quality Control in Clinical Laboratory. The analysis and the evaluation were made on some routine chemistry tests, such as glucose, total protein, albumin, BUN and uric acid. The data obtained from the laboratory were projected to the date of the KSQCCL which initiated an external quality control surveillance from June, 1980 to June, 1982.
1. The internal quality control status on the glucose test was rated superior than that or other participating laboratories in its accuracy, though its precision was found to be deviating.
2. Although it is not critical, a combination of proportional error and constant error in its accuracy of total protein test was noticed. However, its precision was in acceptable range. 3. As far as albumin is concerned, the constant error in its accuracy was found to be more serious than the proportional error, and the precision of it was also interpreted as a little unsatisfactory. 4. The proportional error of the blood urea nitrogen was judged as negligible while the constant error was shown relatively serious. On the contrary, its precision could be said as excellent. 5. Both the accuracy and the precision of uric acid test of* the internal quality control status were evaluated as unsatisfactory.
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