ICRU - Overview: Iodine/Creatinine Ratio, Random, Urine

Test Catalog

Test Name

Test ID: ICRU    
Iodine/Creatinine Ratio, Random, Urine

Useful For Suggests clinical disorders or settings where the test may be helpful

Monitoring iodine excretion rate as an index of daily iodine replacement therapy


Correlating total body iodine load with (131)I uptake studies in assessing thyroid function

Profile Information A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.

Test IDReporting NameAvailable SeparatelyAlways Performed
ICRIodine/Creat Ratio, UNoYes
CDCRCreatinine ConcNoYes

Special Instructions and Forms Library of PDFs including pertinent information and consent forms, specimen collection and preparation information, test algorithms, and other information pertinent to test

Method Name A short description of the method used to perform the test

ICR: Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

CDCR: Enzymatic Colorimetric Assay

NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name A shorter or abbreviated version of the Published Name for a test; an abbreviated test name

Iodine/Creat Ratio, Random, U

Aliases Lists additional common names for a test, as an aid in searching

Iodine Excretion
Urinary Free Iodine
Urinary Iodine