Results 261 to 270 of about 108,632 (316)

Correlation of free thyroxine index and thyroxine: thyroxine-binding globulin ratio with the free thyroxine concentration as measured by the thyroxine and thyroxine-binding globulin radioimmunoassays

Clinica Chimica Acta, 1978
The concentration of thyroxine-binding globulin in the serum can now be measured by a simple and specific radioimmunoassay. Triiodothyronine uptake and measurement of total thyroxine have been combined to yield a free thyroxine index which has been found to correlate with the clinical state of the patients.
Christian Choffel   +3 more
openaire   +3 more sources

A RADIOIMMUNOASSAY OF THYROXINE

The Journal of Clinical Endocrinology & Metabolism, 1971
ABSTRACT A simple, sensitive, specific and precise radioimmunoassay (RIA) for measurement of serum thyroxine (T4) is described. The RIA employs rabbit anti-thyroglobulin antiserum as the T4-binding protein. The precision, reproducibility and practicality of the RIA are comparable to those of competitive protein binding assay (CPBA) using serum TBG as ...
I.J. Chopra, Ruey S. Ho, D.H. Solomon
openaire   +3 more sources

Measurement of thyroxine and cortisol in canine and feline blood samples using two immunoassay analysers.

Journal of Small Animal Practice, 2014
OBJECTIVES The AIA-360 (Tosoh Corporation) is an automated immunoassay analyser. The aims of this study were to estimate the precision of thyroxine and cortisol AIA-360 immunoassays in canine and feline samples and to compare the results produced with ...
Paul Higgs   +3 more
semanticscholar   +1 more source

Maternal-fetal transfer of thyroxine in congenital hypothyroidism due to a total organification defect or thyroid agenesis.

New England Journal of Medicine, 1989
The fact that neonates who subsequently have severe hypothyroidism have no evidence of the condition at birth suggests the possibility of the placental transfer of thyroid hormones.
T. Vulsma, M. Gons, J. D. Vijlder
semanticscholar   +1 more source

Thyroxine Therapy

New England Journal of Medicine, 1994
The availability of sensitive thyrotropin assays allows effective biochemical monitoring of both replacement and suppressive therapy with thyroxine. Whatever target organ is examined, there is tissue thyrotoxicosis if the serum thyrotropin concentration is low, even if the serum triiodothyronine and thyroxine concentrations are normal.
Alastair J.J. Wood, Anthony D. Toft
openaire   +2 more sources

Normalized Serum Thyroxine and Effective Thyroxine Ratio

JAMA: The Journal of the American Medical Association, 1973
To the Editor.— In a recent letter (222:1653, 1972) Mincey compared normalized thyroxine (T 4 N) with the effective thyroxine ratio (ETR) by two in vitro thyroid-function tests utilizing modified competitive techniques of protein binding analysis.
A. A. Bezjian, F. S. Ashkar
openaire   +3 more sources

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