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    Thyroxine ( T4 )
    May 24, 2018
    Testosterone Free and Total
    May 24, 2018
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    T3 Uptake

    $37.00

    Test Details

    Synonyms

    • Thyroid Hormone-binding Ratio (THBR).

    Use

    Thyroid function test for the diagnosis of hypothyroidism or hyperthyroidism, used with thyroxine (T4) or equivalent to provide free T4 index, FTI. An indirect measure of binding protein, the T3 uptake reflects available binding sites (ie, reflects TBG). T3 uptake is not a measurement of serum T3. It should never be used alone; rather, its usual application is use with thyroxine (T4).

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