Random Urine

Aliquot sample into TWO ARUP metal free transport tube (blue lid).

Preferred Minimum: 8 mL random urine
Absolute Minimum: 1 mL random urine

Acid preserved urine. Specimens collected within 72 hours after administration of iodinated or gadolinium-based contrast media. Specimens contaminated with blood or fecal material. Specimens transported in non-trace element-free transport tube (with the exception of the original device).

1-5 days upon receipt at reference laboratory

Iodine, Urine - per volume
  16 years and older | 26.0-705.0 ug/L

Iodine, Urine - per 24h
  16 years and older | 93.0 - 1125.0 ug/d

Iodine per gram of Creatinine
  35.0-540.0 (µg/g crt) - Effective February 18, 2020

Creatinine, Urine - per 24h
   Age                     Male             Female
3-8 years              140-700 mg/d      140-700 mg/d
9-12 years             300-1300 mg/d     300-1300 mg/d
13-17 years            500-2300 mg/d     400-1600 mg/d
18-50 years           1000-2500 mg/d     700-1600 mg/d
51-80 years            800-2100 mg/d     500-1400 mg/d
81 years and older     600-2000 mg/d     400-1300 mg/d

Values greater than 1000 µg/L may indicate dietary excess, but more frequently suggest recent drug or contrast media exposure.

Recommended for the assessment of iodine nutritional status. This test reports total iodine from all iodine-containing species present in the specimen but does not determine the chemical form (species) of the iodine present.

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.

Quantitative Inductively Coupled Plasma-Mass Spectrometry

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