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A simple radioimmunoassay for serum reverse triiodothyronine on small reusable Sephadex G 25 fine columns has been developed. The assay was unaffected by serum volumes of up to 100 microliter. The recovery of reverse T3 added to serum was in the mean 98.3 +/- SEM 3.2% and the coefficient of variation within and between assay determinations 5.4% and 7.5%, respectively. The detection limit was 2.2 pg reverse T3/column. Serum reverse T3 in 58 euthyroid controls was in mean 48 +/- SD 9 ng/100 ml, and was positively correlated to age (P less than 0.001). No overlap was found between the control group, and the hypo- and hyperthyroid group respectively. Three patients with T3-toxicosis had a normal serum rT3.
J Faber, and
T Friis, and
C Kirkegaard, and
K Siersbaek-Nielsen
October 1974,
Clinical chemistry,
J Faber, and
T Friis, and
C Kirkegaard, and
K Siersbaek-Nielsen
January 1977,
La Ricerca in clinica e in laboratorio,
J Faber, and
T Friis, and
C Kirkegaard, and
K Siersbaek-Nielsen
September 1974,
The Journal of clinical investigation,
J Faber, and
T Friis, and
C Kirkegaard, and
K Siersbaek-Nielsen
January 1982,
Methods in enzymology,
J Faber, and
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K Siersbaek-Nielsen
June 1976,
Clinica chimica acta; international journal of clinical chemistry,
J Faber, and
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C Kirkegaard, and
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November 1976,
Clinical endocrinology,
J Faber, and
T Friis, and
C Kirkegaard, and
K Siersbaek-Nielsen
June 1985,
Nihon Sanka Fujinka Gakkai zasshi,
J Faber, and
T Friis, and
C Kirkegaard, and
K Siersbaek-Nielsen
January 1982,
Clinica chimica acta; international journal of clinical chemistry,
J Faber, and
T Friis, and
C Kirkegaard, and
K Siersbaek-Nielsen
January 1979,
Endokrynologia Polska,
J Faber, and
T Friis, and
C Kirkegaard, and
K Siersbaek-Nielsen
November 1981,
The Journal of clinical endocrinology and metabolism,
