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What Is Iodine Test For?
Radioactive iodine uptake (RAIU) is a test of thyroid function. It measures how much radioactive iodine is taken up by the thyroid gland in a given time period.
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Alternative Names
Iodine uptake test; RAIU
How the test is performed
You are asked to swallow a liquid or capsule containing radioactive iodine.
After a certain period of time (usually 6 and 24 hours later), you must return to the testing center so that the amount of radioactivity in the thyroid gland can be...
Read moreMore information on "What Is Iodine Test For?"
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From Our Sources
Iodine overdose
Source: ADAM Encyclopedia
Iodine is a naturally occuring chemical. Small amounts are needed for good health. However, large doses can cause harm. Children are especially... Read more »
MIBG (iodine-131-meta-iodobenzylguanidine) scintiscan
Source: ADAM Encyclopedia
An MIBG scintiscan is an imaging test that uses a radioactive substance (called a tracer) and a special scanner to find or confirm the presence of... Read more »
Iodine in diet
Source: ADAM Encyclopedia
Iodine is a trace mineral and an essential nutrient found naturally in the body. Alternative Names Diet - iodine Function ... Read more »
Thyroid scan
Source: ADAM Encyclopedia
Scan - thyroid; Radioactive iodine screening test - thyroid; RAUI; Nuclear scan - thyroid Read more »
T4 test
Source: ADAM Encyclopedia
Thyroxine testNormal ValuesA typical normal range is 4.5 to 11.2 micrograms per deciliter (mcg/dL).Normal value ranges may vary slightly among... Read more »
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