Abstract
Summary
Curves of plasma radioactivity were determined for 25 patients after the ingestion of 100 microcuries of radioiodine. The patients were divided into 11 cases of myxedema, 5 cases of hyperthyroidism and 9 euthyroid individuals. The curves were constructed from plasma samples drawn at 30 minutes 1, 3, 6, 12, 24, and 48 hours. It was not possible to statistically separate, at these time intervals, the curves of the hyperthyroid and euthyroid individuals. The curves of the myxedematous patients, however, were significantly different from those of the non-myxedematous patients; thus the myxedematous curves show a later peak level, a lower peak level and a fall more delayed than do the curves of the non-myxedematous patients.
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