Jul 21, 2022 · A radioactive iodine uptake test shows how well your thyroid functions. Discover how the RAIU compares to a thyroid scan and what you should do afterward.

Jul 12, 2024 · A thyroid uptake test is also known as a radioactive iodine uptake test (RAIU). It’s a nuclear medicine test that measures how much radioactive iodine your thyroid absorbs over a given time. A healthcare provider places a probe over your thyroid to measure the amount of radioactivity in your gland.

Sep 23, 2022 · I-123 can be used to perform a thyroid uptake and/or scan. You will take I-123 on the first day and come back the next day for the scan. The radiation from the RAI can be detected from outside your body using a special scan. This scan can show how your thyroid gland is working and its location.

Sep 17, 2018 · Thyroid scans can help your doctor determine if your thyroid is working properly. You may also have a radioactive iodine uptake (RAIU) test with the scan to measure your thyroid’s reaction. A...

The radioactive iodine uptake test (RAIU) is also known as a thyroid uptake. It is a measurement of thyroid function, but does not involve imaging. Nuclear medicine uses small amounts of radioactive material called radiotracers.

Oct 3, 2022 · Clinicians use these rays for diagnostic and treatment purposes. The test uses a radioactive tracer, a protein, or a molecule attached to radioactive material. The radioactive tracer is administered to the patient, and a probe measures the amount of …

Feb 24, 2024 · What Is a Radioactive Iodine Uptake Test? A radioactive iodine uptake (RAIU) tests the function of your thyroid gland, which helps regulate your metabolism. It works by measuring how much...

WHAT IS RADIOACTIVE IODINE (RAI)? I-123 is the usual form used to diagnose thyroid problems since it does not damage cells. I-123 can be used to perform a thyroid uptake and/or scan. You will take I-123 on the first day and come back the next day for the scan. The radiation from the RAI can be detected from outside your body using a special scan.

Feb 28, 2024 · Normal test results will show that the thyroid appears to be the correct size, shape, and in the proper location. It is an even gray color on the computer image without darker or lighter areas. A thyroid that is enlarged or pushed off to one side could be a sign of a tumor.

Feb 28, 2024 · A thyroid scan uses a radioactive iodine tracer to examine the structure and function of the thyroid gland. Alternative Names: Scan - thyroid; Radioactive iodi.