Test Overview

Test Methodology

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Test Usage

Determination of iodine overload

Reference Range*

40-92 ng/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.

Test Details

Days Test Performed

Monday, Wednesday, Friday

Analytic Time

2 - 5 days

Soft Order Code


MiChart Code




Laboratory Reference

Mayo IOD

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Specimen Requirements

Rejection Criteria

Specimen drawn or received in non-metal free tube.


Red Top Tube
Red Top Tube

Normal Volume

1 mL serum

Minimum Volume

0.3 mL serum

Additional Information

Test performed by Mayo Clinic Labs

Billing Information

Fee Codes

CPT Code


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