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Radioactivity test

Radioactivity test

Radioactive iodine uptake test is a type of nuclear test performed to evaluate thyroid function.The patient ingests radioactive iodine (I-123 or I-131) capsules or liquid.After a time (usually 6 and 24-hours later), a gamma probe is placed over the thyroid gland to measure the amount of radioactivity in the thyroid gland.The values are then compared.