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KMID : 0384119930130010051
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Korean Journal of Clinical Pathology
1993 Volume.13 No. 1 p.51 ~ p.58
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Comparative Analysis of Management and Test Results Among Three Different Electrolyte-Analyzing Instruments
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강정아
송경은/이원길/최성만/김영식
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Abstract
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The detection methods of electrolytes in current use are flame emission spectrophotometry, coulometry and ion-selective electrode(ISE) technology. The purpose of this study is to find out the best suited instrument for the analysis of
electrolytes
according to the characteristics of the hospital, number of tests and personnel. The three instruments of Corning 480(flame photometer). Techlyte and Spectrum II(direct ISE) were evaluated for their precision. actual time of analysis,
correlation,
and
total cost per test. Precision results were excellent. The actual time required for analysis in small, medium and large scale hospitals were almost same about 92 second for Corning 480, 109.2, 60.4, and 48.0 seconds for Techlyte, 87.0, 37.5 and
26.3
seconds for Spectrum II, respectively. The cost required per test were same about 145 Won for Corning 480, 174.6, 134.1, and 122.9. Won for Techlyte, respectively and the same amount of 640.9 Won irrespective of hospital size for Spectrum II.
Results of
sodium and potassium obtained by Corning 480 and Techlyte showed correlation coefficient being 0.6, 0.93 respectively. In summary, present study indicates that Corning 480 is suitable for small scale hospital because there is no difference for
the
time
required for analysis and the cost per test among the three scaled hospitals. In medium to large scale hospital, Techlyte or Spectrum II will be best sited because Techlyte takes shorter analytic time and cheaper cost per test and Spectrum II is
able to
perform larger volume of test at shorter time though cost per test is somewhat higher than those of the other two instruments.
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