1. radioactive iodine test that measures the amount of radioactive iodine taken up by the thyroid gland; [syn: radioactive iodine uptake test, RAIU]
WordNet (r) 3.0 (2006):
RAIU
n 1: radioactive iodine test that measures the amount of
radioactive iodine taken up by the thyroid gland [syn:
radioactive iodine uptake test, RAIU]