The “free thyroxine index”

descriptionPublicationkeyboard_double_arrow_right Article 01 Nov 1969 English Publisher:Springer Science and Business Media LLCJournal:Irish Journal of Medical Science, volume 2, pages 515-521 (eissn: 0021-1265,

Copyright policy )Publicly funded

Authors: P P, Smyth; D K, O'Donovan;

doi: 10.1007/bf02955461

pmid: 4189975

The “free thyroxine index”

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Abstract

The direct estimation of serum thyroxine iodine (T4I) and the uptake of125I labelled thyroxine from serum by anion exchange resin (R.U.R.) can both be used independently to assess thyroid status. The results from these two tests can be combined to give a free thyroxine index (F.T.I.) which is believed to be proportional to the concentration of free thyroxine in the serum.

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Keywords

Iodine Radioisotopes, Thyroxine, Pregnancy, Methods, Humans, Nephrosis, Female, Ion Exchange Resins, Thyroid Function Tests, Thyroid Diseases

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