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Screening for iron overload using transferrin saturation.

K S Olsson, K Eriksson, B Ritter

    Acta Medica Scandinavica
    |January 1, 1984
    PubMed
    Summary
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    Early detection of parenchymal iron overload is possible through serum iron and transferrin (TIBC) saturation tests. This study identified a 0.24% prevalence, highlighting the need for improved diagnostic methods.

    Area of Science:

    • Biochemistry
    • Hematology
    • Medical Diagnostics

    Background:

    • Parenchymal iron overload presents with elevated serum iron and transferrin saturation.
    • Early detection via laboratory tests can prevent organ damage.
    • Simple blood tests offer a window for early diagnosis.

    Purpose of the Study:

    • To determine the prevalence of parenchymal iron overload.
    • To assess the utility of transferrin saturation (TIBC) in identifying iron overload.
    • To investigate causes of elevated TIBC saturation.

    Main Methods:

    • Analysis of 10,512 samples from patients and blood donors over 2 months.
    • Screening for abnormal TIBC saturation (>70%).
    • Confirmation of iron overload using serum ferritin, desferrioxamine test, liver biopsy, phlebotomy, and family studies.

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    Main Results:

    • Abnormal TIBC saturation found in 1.7% of samples.
    • Parenchymal iron overload identified in 11.5% of abnormal TIBC saturation cases.
    • Confirmed prevalence of iron overload was 0.24%, likely an underestimate.

    Conclusions:

    • Elevated TIBC saturation is a key indicator for potential iron overload.
    • Early detection through laboratory screening is feasible.
    • Further research is needed to refine diagnostic accuracy and account for confounding factors like inflammation.