Test Details

Mnemonic

UIOD

Ordering Code

3800004

CPT-4 Code(s)

83789

Specimen Information

Patient Preparation

Do not collect within 96 hours of administering iodine or gadolinium - base contrast media.
If this test is used in conjunction with the (131)l uptake test, then specimen collection should begin immediately after the dose of (131)l is given (ie: the patient should void and discard urine just prior to the (131)l, and all subsequent urine should be collected for the next 24 hours). The last void should be included in the collection.
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Collect

24 hour urine (refrigerate during collection)
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Specimen Preparation

Mix well and send 10.0 mL urine refrigerated in a screw-capped plastic urine container.
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Alternate Specimen

Urine preserved with 50% acetic acid
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Minimum Volume

0.3 mL
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Transport Temperature

Refrigerated
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Stability

Room temperature: 146 days
Refrigerated: 146 days
Frozen: 146 days
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Methodology

Inductively Coupled Plasma-Mass Spectrometry
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Reference Range

Iodine, 24 hour urine:
0-17 years: Not Established
≥18 years: 75-851 mcg/24 hour
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Performing Laboratory

Mayo Clinic Laboratories
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New York DOH Approval Status

Yes
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