Hormone and Metabolic Research, Table of Contents Horm Metab Res 1986; 18(7): 500-501DOI: 10.1055/s-2007-1012358 RAPID COMMUNICATIONS © Georg Thieme Verlag, Stuttgart · New YorkNo Monthly Variations in Serum Levels of Thyroid Hormones in Human MalesE. Taubøll, L. Gjerstad, K. T. Stokke1 , Ragnhild Wergeland1 Department of Neurology, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway 1Department of Clinical Chemistry, Rikshospitalet, The National Hospital, University of Oslo, Oslo, Norway Recommend Article Abstract PDF Download Buy Article Summary There have been very few reports on rhythmic variation in thyroid hormone concentrations with a periodicity of 4-6 weeks. In an attempt to evaluate whether such a rhythm is a general phenomenon we studied ten healthy male students with weekly blood samples over 12 weeks for T4, T3 and TSH. No rhythmicity could be demonstrated. Key-Words Biological rhythms - Thyroxine - Triiodothyronine - Thyrotropin PDF (110 kb)
