Direct Measurement of Free Thyroxine in Patients with T3-Toxicosis

T. Lin; H. R. Nankin

doi:10.1055/s-2007-999212

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Horm Metab Res 1980; 12(11): 611-614
DOI: 10.1055/s-2007-999212

Direct Measurement of Free Thyroxine in Patients with T₃-Toxicosis

T. Lin, H. R. Nankin

Medical Service, William Jennings Bryan Dorn Veterans' Hospital and Department of Medicine University of South Carolina School of Medicine Columbia, South Carolina, U.S.A.

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Publikationsverlauf

1979

1980

Publikationsdatum:
22. April 2008 (online)

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Summary

Circulating levels of free thyroxine were directly measured using a new kinetic radioimmunoassay system. Free thyroxine was abnormally elevated in: 1) each of eleven hyperthyroid individuals having elevated concentrations of thyroxine and triiodothyronine; and 2) all five hyperthyroid subjects who had normal circulating levels of thyroxine but elevated concentrations of triiodothyronine (T₃-toxicosis). Using this assay system, free thyroxine appears to be elevated in all hyperthyroid individuals.

Key-Words

Free T ₄-Hyperthyroidism - T ₃-Toxicosis