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131I uptake test


Definition: a test of thyroid function in which iodide 131 is given orally; after 24 hours, the amount present in the thyroid gland is measured and compared with normal values.

Synonym(s): radioactive iodide uptake test, RAI test

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.