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Test Name:
Iodine, Serum


  • TMF No:
    47074
  • Performance Lab Name:
    ARUP Laboratories
  • Test Mnemonic:
    IODINESER
  • CPT Code:
    83018
  • Ref Lab Test No:
    2007463
  • Also Known As:
    Iodide
  • Patient Prep:
    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. During venipuncture, do not use disinfectants (such as Betadine) that contain iodine.
  • Spec Collect:
    Royal Blue top (No additive; Trace-element free) tube provided in SBMF Trace Metal Collection Kit (Stock Item #7208)
  • Spec Process:
    Separate serum from cells ASAP or within 2 hours of collection. Transfer 2 mL serum to the Trace Element Free transport tube provided in collection kit. (Min: 0.5 mL)
  • Spec Store Transport:
    Refrigerated.
  • Spec Stability:
    Room temperature: 30 days
    Refrigerated: 30 days
    Frozen: 30 days
  • Spec Reject:
    Specimens not received in Trace Element Free transport tubes. Separator tubes and specimens that are not separated from the clot within 6 hours. Serum collected within 48 hours after administration of a gadolinium (Gd) or iodine (I) containing contrast media (may occur with MRI studies). Plasma.
  • Methodology:
    Quantitative Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)
  • Use:
    This test reports total iodine from all iodine-containing species present in the specimen and is recommended for determination of iodine excess and monitoring iodine overload in patients administered iodine-containing medications. This test does not determine the chemical form (species) of the iodine present.
  • Interpretive Data:

    40-92 µg/L

    Interpretive Data:
    Values greater than 250 µg/L may indicate iodine overload.

    See Compliance Statement B: www.aruplab.com/CS
    Statement B: This test was developed and its performance characteristics determined by ARUP Laboratories. The U.S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.

  • Additional Test Info:
    Lab Tests Online
  • Day Run:
    Tue, Sat
  • Time Reported:
    2-6 days
  • Test Type:
    METAL/ELEMENT