Iodine, Urine

Abbrev Code:IODCRU   
Order Code:LAB8094Order Name:Iodine, Urine
Synonyms:Iodine spot
Methodology:Inductively coupled plasma, mass spectrometry
CPT Codes: 83018 x1
Turnaround Time:Specimens are sent to the reference laboratory Mon-Sat; results are reported within 1-5 days.

For tests developed and validated by ARUP (previously referred to as Compliance Statement B, C or D). This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the U.S. Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

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Urine Collection Procedure

Collection Instructions

Specimen:Urine, random or 24 hour collection.
Optimal Volume:8 mL
Minimum\Peds Volume:1 mL
Container:Plastic leakproof container, sterile
Alternate Containers: 3 L plastic jug
Patient Preparation:Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, nonessential over-the-counter medications for 48 hours (upon  the advice of their physician). In addition, the administration of iodine-based contrast media and drugs containing iodine may yield elevated results. Specimen must be collected in a plastic container and should be refrigerated after collection.
Causes for Rejection:Specimens not received in Trace-Element-Free tubes. Urine collected within 72 hours after administration of a gadolinium (Gd) or iodine (I) containing contrast media (may occur with MRI studies). Acid preserved urine. Specimens contaminated with blood or fecal material. Specimen transported in non-trace element-free transport tube (with the exception of the original device).

Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Aliquot 8 mL, 1 mL minimum into a metal-free container. Record the total volume and collection time interval on transport tube and on test request form.
Shipping Instructions:Ship at refrigerated temperature.
Stability:2 months at room temperature, refrigerated or frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:2007465


Reference Range:
Iodine, Urine, Random 16 years and older: 26.0-705.00 μg/L
Iodine, Urine, 24 Hour 16 years and older: 93.0-1125.0 μg/d
Random or 24 Hour Iodine Urine 0-15 y: Not established
Values greater than 100 μg/L May indicate dietary excess, but more frequently suggests recent drug or contrast media exposure
Iodine, per
gram of CRT
35.0-540.0 μg/g CRT
Use:Assessment of iodine nutritional status.

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