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.

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
Storage Temperature
Refrigerated preferred, Ambient and frozen are acceptable.
Additional Information

Test performed by Mayo Clinic Labs

Billing
CPT Code
83789
Fee Code
AA492
NY State Approved
No