A radioactive iodine uptake (RAIU) tests the function of your thyroid gland, which helps regulate your metabolism. It works by measuring how much radioactive iodine is absorbed by the thyroid gland, ...
This may be explained by the fact that the records from 1955 only relate to individuals with outspoken thyroid disease (no biochemical tests being available), whereas in 2000, hyperthyroidism was ...
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