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Related Experiment Videos

Serum creatinine. A CAP survey

E K Chinn, J G Batsakis, H Pilon

    American Journal of Clinical Pathology
    |September 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

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    The 1976-1977 College of American Pathologists Survey found that most labs using the Jaffe reaction for serum creatinine measurements showed comparable results. Centrifugal analyzers, however, exhibited a consistent high bias in creatinine levels.

    Area of Science:

    • Clinical Chemistry
    • Laboratory Medicine
    • Analytical Chemistry

    Background:

    • Serum creatinine is a key indicator of kidney function.
    • Accurate creatinine measurement is crucial for diagnosing and monitoring renal diseases.
    • Standardization of laboratory methods is essential for reliable patient care.

    Purpose of the Study:

    • To evaluate the performance of various serum creatinine measurement methods used by clinical laboratories.
    • To identify variations and biases in creatinine measurements across different laboratory systems.
    • To assess the impact of specific reagents and analytical platforms on creatinine assay results.

    Main Methods:

    • Analysis of data from the 1976-1977 College of American Pathologists Survey.
    • Inclusion of results from over 5,000 participating laboratories.

    Related Experiment Videos

  • Comparison of creatinine concentrations obtained from manual, automated, and discrete analytical systems.
  • Evaluation of the Jaffe reaction (alkaline picrate) as the primary measurement method.

    • Main Results:

    • Most manual and automated systems using the Jaffe reaction provided comparable serum creatinine concentrations.
    • Centrifugal analyzers demonstrated a consistent and significant high bias in creatinine measurements.
    • Continuous-flow and DuPont discrete systems exhibited the lowest interlaboratory variation.
    • Lloyd's reagent caused a minor, clinically insignificant decrease in creatinine levels in lyophilized sera.

    Conclusions:

    • The Jaffe reaction is a widely used and generally reliable method for serum creatinine measurement across diverse laboratory systems.
    • Specific automated platforms, such as centrifugal analyzers, require careful calibration and monitoring due to inherent biases.
    • Continuous-flow and DuPont discrete systems offer superior interlaboratory consistency for creatinine assays.
    • The choice of reagent and analytical system can influence creatinine measurement accuracy and reliability.