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Related Experiment Videos

Difference of glucose values due to analytical instruments, methods and samples.

Y Kitazawa, T Uchida, S Kakizaki

    The Tohoku Journal of Experimental Medicine
    |December 1, 1983
    PubMed
    Summary

    Accurate blood glucose measurement depends on the analytical method and instrument used. Differences in glucose values were observed between methods, instruments, and sample types (plasma vs. whole blood).

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    Area of Science:

    • Clinical Chemistry
    • Biomedical Analysis

    Background:

    • Accurate blood glucose monitoring is crucial for diabetes management and clinical diagnostics.
    • Variability in analytical methods and instrumentation can impact glucose measurement accuracy.

    Purpose of the Study:

    • To quantify the exact differences in blood glucose values arising from various samples, analytical methods, and instruments.
    • To compare glucose measurements obtained using different autoanalyzer systems and methodologies.

    Main Methods:

    • Comparison of glucose values obtained from autoanalyzers with and without deproteinizing systems.
    • Evaluation of glucose measurements using dual wavelength systems.
    • Analysis of differences between Hoffman's method and the glucose-oxidase method.
    • Comparison of plasma glucose values versus whole blood glucose values.

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    Main Results:

    • Autoanalyzers with deproteinizing systems yielded lower glucose values compared to those without.
    • Dual wavelength systems reduced the difference observed between analyzers with and without deproteinizing procedures.
    • A consistent difference of 10 mg/dl was noted between Hoffman's method and the glucose-oxidase method.
    • Plasma glucose concentrations were higher than whole blood glucose concentrations, with variations dependent on glucose levels.

    Conclusions:

    • The choice of analytical method and instrument significantly influences blood glucose measurement outcomes.
    • Deproteinization and wavelength systems affect glucose readings, necessitating careful instrument selection.
    • Plasma glucose measurements are generally higher than whole blood measurements, requiring standardized reporting.