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Related Experiment Videos

Lipoprotein quantification: an electrophoretic method compared with the Lipid Research Clinics method

G R Warnick, T Nguyen, R O Bergelin

    Clinical Chemistry
    |October 1, 1982
    PubMed
    Summary
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    The Lipidophor turbidimetric method offers a viable alternative for quantifying lipoprotein cholesterol, showing good agreement with the standard Lipid Research Clinics method, especially after applying revised algorithms for accurate results.

    Area of Science:

    • Clinical Chemistry
    • Biochemistry
    • Analytical Methods

    Background:

    • Accurate quantification of lipoproteins is crucial for cardiovascular risk assessment.
    • Standardized methods like the Lipid Research Clinics (LRC) method are essential for comparability.
    • Novel methods require validation against established standards.

    Purpose of the Study:

    • To compare the accuracy of the turbidimetric electrophoretic Lipidophor method with the standardized LRC method for lipoprotein cholesterol quantification.
    • To evaluate the performance and agreement between the two methods across different lipoprotein fractions.

    Main Methods:

    • Lipoprotein quantification using the Lipidophor method involving electrophoresis, precipitation, and densitometry.
    • Comparison of Lipidophor results with the established Lipid Research Clinics (LRC) method.

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  • Statistical analysis including calculation of coefficients of variation (CVs) and correlation coefficients (r).

    • Main Results:

    • The Lipidophor method demonstrated acceptable among-day coefficients of variation (CVs) for alpha-, beta-, and pre-beta lipoprotein cholesterol.
    • Significant differences were observed for alpha-cholesterol (lower) and beta-cholesterol (higher) compared to LRC values.
    • Strong linear correlations (r = 0.87 for HDL, r = 0.96 for LDL, r = 0.82 for VLDL) were found between the Lipidophor and LRC methods.

    Conclusions:

    • The Lipidophor turbidimetric electrophoretic method provides reliable lipoprotein cholesterol measurements.
    • Revised algorithms derived from this study improve the agreement between Lipidophor and LRC methods.
    • Lipidophor is a promising alternative for lipoprotein quantification when validated constants are employed.