Is the High Basal Metabolic Rate in "Hyperthyroidism" Due to Thyroxine?

Abstract

Data presented lead the authors to conclude that it would require an unusually large amt of thyroglobulin to account for the observed rise in basal metabolic rate, as it is low in thyroxine, the case of highest basal metabolic rate being in a person whose thyroglobulin contained only 0.2% thyroxine (0.04% thyroxine-iodine).