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Alternative mechanized method for analysis for inorganic phosphate without reduction

N B Roberts

    Clinical Chemistry
    |October 1, 1978
    PubMed
    Summary
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    A new method allows mechanized measurement of inorganic phosphate in plasma without reduction. This technique enhances phosphomolybdate complex extinction using Triton X-100, showing excellent agreement with standard methods.

    Area of Science:

    • Clinical Chemistry
    • Analytical Chemistry
    • Biochemistry

    Background:

    • Accurate measurement of inorganic phosphate in plasma is crucial for diagnosing various medical conditions.
    • Existing continuous-flow reduction procedures for plasma phosphate analysis can be complex and time-consuming.

    Purpose of the Study:

    • To develop a simplified, mechanized method for inorganic phosphate measurement in plasma.
    • To eliminate the reduction step in existing continuous-flow procedures for plasma phosphate analysis.

    Main Methods:

    • Minor modifications to an existing continuous-flow reduction procedure.
    • Utilizing the detergent Triton X-100 to enhance the extinction of the phosphomolybdate complex.
    • Comparing results with the standard Fiske-SubbaRow reduction procedure.

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    Main Results:

    • Successful mechanized measurement of inorganic phosphate without a reduction step.
    • Excellent agreement between the new method and the Fiske-SubbaRow procedure (correlation coefficient = 0.996).
    • Statistical analysis confirmed high concordance between the two measurement techniques.

    Conclusions:

    • The developed method offers a viable, non-reduction approach for plasma inorganic phosphate analysis.
    • This simplified method maintains high accuracy and reliability compared to established techniques.
    • The use of Triton X-100 provides a significant enhancement for continuous-flow phosphate determination.