Test Overview
Test Methodology

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Test Usage

Determination of iodine overload

Reference Range *

40-92 ng/mL

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 Set Up
Monday, Wednesday, Friday
Analytic Time

2 - 5 days

Soft Order Code
IOD
MiChart Code
IOD
Laboratory
Sendout
Reference Laboratory
Mayo IOD
Section
Special Testing
Specimen Requirements
Collection

Royal blue (trace element) and/or Metal-Free aliquot tubes are available from MLabs (800-862-7284). Collect blood in a royal blue top (trace element) tube with no preservative (serum). Allow specimen to clot for 30 minutes, centrifuge, and carefully pour serum into a metal-free aliquot tube, avoiding transfer of the cellular components of blood. Do not insert a pipet into the serum to transfer and do not ream the specimen with a wooden stick to assist with the transfer. Refrigerate (preferred) or freeze. Do not collect specimens for trace metal testing from patients who have received gadolinium-, iodine-, or barium-containing contrast material within the past 96 hours. These metal-based contrast agents are known to interfere with laboratory techniques commonly used for trace metals analysis.

Normal Volume
1 mL serum
Minimum Volume
0.3 mL serum
Storage Temperature
Refrigerated preferred, Ambient and frozen are acceptable.
Rejection Criteria
Specimen drawn or received in non-metal free tube.
Additional Information

Test performed by Mayo Clinic Labs

Billing
CPT Code
83789
Fee Code
AA492
NY State Approved
No