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Thyroxine Free, Direct (t4) Blood Test

Thyroxine Free, Direct (t4) Blood Test
T4 (Thyroxine), Free Item Catalog Number: LC001974 The thyroid gland produces and secretes T4, otherwise known as thyroxine. Proteins bind to T4 and carry it throughout the bloodstream. Once in the tissues, T4 is released from the proteins and is now


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