radioactive iodine test
Definition
Noun: A medical diagnostic procedure that assesses the health and function of the thyroid gland. The test involves administering a small, safe oral dose of a radioactive isotope of iodine (iodine-131) to the patient. The thyroid gland's uptake and processing of this radioactive material are then measured to evaluate its activity.
Usage
This term is used specifically in medical and clinical contexts to refer to this diagnostic method. * The doctor ordered a radioactive iodine test to determine if her thyroid was overactive. * Results from the radioactive iodine test confirmed the diagnosis of hyperthyroidism.
Advanced Usage
- The test is often part of a radioactive iodine uptake (RAIU) test, which specifically measures how much iodine the thyroid collects from the bloodstream.
- It can be used to differentiate between various causes of thyroid dysfunction, such as Graves' disease or thyroiditis.
Variants and Related Words
- Radioiodine test: A synonymous term.
- RAIU test (Radioactive Iodine Uptake test): A common, more specific variant that is a primary component of the radioactive iodine test.
- Thyroid scan: A related imaging procedure often performed in conjunction with, or following, a radioactive iodine test to visualize the gland.
Synonyms
- Radioiodine uptake test
- Thyroid uptake test
Related Phrases
- To undergo a radioactive iodine test: To have the test performed.
- The patient will undergo a radioactive iodine test next week.
- Radioactive iodine therapy: A related but distinct treatment procedure (not a test) that uses higher doses of radioactive iodine to destroy thyroid tissue, often used for hyperthyroidism or thyroid cancer.
Noun
-
test of thyroid function in which the patient is given an oral dose of radioactive iodine-131
