Skip to Content

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

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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