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T4 (Thyroxine) Test: What It Is and What It Can Tell YouEun Lee, MD If your healthcare provider has ordered a T4 test, you may wonder what it is. Thyroxine is another name for T4, ...
Most of the free hormone immunoassays in current use employ a specific, high affinity hormone antibody to sequester a small amount of total hormone from the specimen. The unoccupied antibody ...
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