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Horm Metab Res 1979; 11(1): 34-36
DOI: 10.1055/s-0028-1092678
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© Georg Thieme Verlag KG Stuttgart · New York

Serum T4 T3 and Reverse T3 During Treatment with Propranolol in Hyperthyroidism, L-T4 Treated Myxedema and in Normal Man

J.  Faber , T.  Friis , C.  Kirkegaard , I. B. Lumholtz , J.  Mølholm Hansen , K.  Siersbæk-Nielsen , L.  Skovsted , P.  Theilade
  • Department of Internal Medicine E, Frederiksberg Hospital, Department of Internal Medicine and Endocrinology, Herlev Hospital, Copenhagen, Denmark
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Publication Date:
17 December 2008 (online)

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Abstract

Serum concentrations of T4, T3and reverse T3were studied in two hyperthyroid groups (n = 13 and 11), in a group of normals (n = 9) and in a group of L-T4 substituted patients (n = 7) with severe pretreatment hypothyroidism. Serum T4 did not change except in one of the hyperthyroid groups, in which a slight decrease was found. In all groups a significant fall in serum T3 and a significant rise in serum reverse T3 were found. An expected increase in serum TSH in the normal and in the L-T4 substituted groups could not be demonstrated.

Key words

T4 - T3 - Reverse T3 - Propranolol