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 some what 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 Na, K, Cl and Ca. 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 constant error of the Na determination was judged as negligible while the negative proportional error was shown relatively serious, and the precision of it was also interpreted as a little unsatisfactory.
2. Both the accuracy and the precision of K determination of the internal quality control status were evaluated as satisfactory.
3. As far as Cl determination is concerned, the propor inal error in its accuracy was found to be more serious than the constant error, and the precision of it was also interpreted as a little unsatisfactory.
4. Both the accuracy and the precision of Ca determination in the internal quality control status were evaluated as unsatisfactory.
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