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Journal of Clinical Endocrinology & Metabolism Vol. 44, No. 5 998-1001
doi:10.1210/jcem-44-5-998
Copyright © 1977 by the Endocrine Society.
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*Compound via MeSH
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*LEVOTHYROXINE
*LIOTHYRONINE

SEASONAL VARIATION IN SERUM T3 AND T4 LEVELS IN MAN.

A.G.H. Smals, H.A. Ross and P.W.C. Kloppenborg

Department of Medicine, Division of Endocrinology, University of Nijmegen, Nijmegen The Netherlands.

In a group of 13 healthy male adults in the Netherlands, a seasonal variation in circulating serum thyroxine (T4) and triiodothyronine (T3) levels was found, inversely correlating with the seasonally altering environmental temperature. Lowest serum T4 and T3 levels were found in the summer.

Received December 14, 1976.




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Copyright © 1977 by The Endocrine Society