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Related Experiment Videos

Relation between plasma creatinine and body size.

R Swaminathan, C S Ho, L M Chu

    Clinical Chemistry
    |February 1, 1986
    PubMed
    Summary
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    Plasma creatinine and urea levels were lower in women than men and correlated with age. Body size, including lean body mass, did not significantly correlate with creatinine levels in healthy adults.

    Area of Science:

    • Biochemistry
    • Human Physiology
    • Clinical Chemistry

    Background:

    • Plasma creatinine and urea are key biomarkers for kidney function and metabolic status.
    • Body size and composition influence various physiological parameters, including metabolite concentrations.
    • Understanding these relationships is crucial for accurate clinical interpretation and population health studies.

    Purpose of the Study:

    • To investigate the relationship between plasma creatinine concentration and body size in a cohort of healthy adults.
    • To determine if lean body mass is a significant predictor of plasma creatinine levels, considering age and sex.

    Main Methods:

    • Cross-sectional study of 673 healthy individuals (385 women, 288 men).
    • Measurements included weight, height, skinfold thickness, and plasma urea and creatinine levels.

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  • Lean body mass was calculated using the Durnin and Wormsley method.

    • Main Results:

    • Plasma urea and creatinine concentrations were significantly lower in women compared to men.
    • Age showed a significant correlation with plasma creatinine and urea levels in both sexes.
    • No significant correlation was found between lean body mass and plasma creatinine concentration in either sex, even after adjusting for age.

    Conclusions:

    • Sex and age are significant factors influencing plasma creatinine and urea levels in healthy adults.
    • Lean body mass is not a significant determinant of plasma creatinine concentration in this population.
    • These findings highlight the importance of considering demographic factors in the interpretation of creatinine levels.