Abstract

Serum PBI and thyroxine iodine (T4I) levels have been compared in a large series of patients. A mean difference of 0.35 μg/100 ml was found in euthyroid subjects, but a much greater difference obtained when both values were high, whether the elevation resulted from hyperthyroidism, pregnancy or the administration of thyroxine or oestrogen. This discrepancy was greater in a group of patients with diffuse goitre than in those with nodular glands. A circulating non-thyroxine iodinated compound is thought to account for this discrepancy, the origins of which could lie in the thyroid gland, although peripheral deiodination of thyroxine seems more likely.

This content is only available as a PDF.
This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://dbpia.nl.go.kr/journals/pages/open_access/funder_policies/chorus/standard_publication_model)
You do not currently have access to this article.