Lab test
Iodine Urine Test, 24-Hour
Below is a plain-language overview of the iodine urine test, 24-hour. The Iodine Urine Test, 24-Hour measures iodine levels in urine over a full day to assess iodine status in the body.
What this test is
This test evaluates the amount of iodine excreted in urine over a 24-hour period. Iodine is an essential mineral important for thyroid function.
What it measures
- Iodine — reflects iodine status in the body
What the test involves
The test requires collecting all urine produced in a 24-hour period. The collected sample is then sent to a laboratory for analysis.
Why it is often ordered
Clinicians typically order this test to assess iodine status, which is important for thyroid health. It may be used in cases of suspected iodine deficiency or excess.
Preparation
Preparation involves following specific instructions provided by the collection lab to ensure accurate results.
How results are reported
Results are reported as the amount of iodine excreted in urine over 24 hours. Reference ranges vary by laboratory and are used to interpret the results.
Before you go
- collection instructions
- sample drop-off times
- any dietary restrictions
FAQ
Frequently asked questions
What does the iodine urine test measure?
The test measures the amount of iodine excreted in urine over a 24-hour period, which helps evaluate iodine status in the body.
How is the 24-hour urine sample collected?
You will collect all urine passed in a 24-hour period, starting with an empty bladder, and store it in a provided container.
Why is iodine important for health?
Iodine is crucial for the production of thyroid hormones, which regulate metabolism and support growth and development.
Can diet affect iodine levels?
Yes, dietary intake of iodine-rich foods like fish, dairy, and iodized salt can influence iodine levels in the body.
Related
Related tests
Locations
Request Iodine Urine Test, 24-Hour by state
Choose a state for local context.