Test Overview
Test Methodology

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Test Usage

Detecting toxic thallium exposure.

Reference Range *

Age 0-17 years: not established; age >or= 18 years: <2 mcg/24 hour.

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

Test Details
Days Set Up
Monday, Thursday
Analytic Time

2 - 6 days

Soft Order Code
TL-U
MiChart Code
Thallium, Urine
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Mayo TLU (8603)
    Section
    Special Testing
    Specimen Requirements
    Collection Instructions

    Collect 24 hour urine in a clean, plastic container with no metal cap or glued insert and no preservative. Aliquot urine into a clean, plastic container with no metal cap or glued insert and refrigerate within 4 hours of completion of collection. Record 24 hour urine volume and collection dates/times on the request form. Collection must take place prior to or 96 hours after administering gadolinium-containing contrast media.

    Contraindications
    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.
    Normal Volume
    10 mL aliquot of 24 hour urine collection
    Minimum Volume
    1 mL aliquot of 24 hour urine collection
    Additional Information

    Thallium is a by-product of lead smelting and is found in some depilatories and rodenticides. Thallium is rapidly absorbed via ingestion, inhalation, skin contact, and through mucous membranes. Test sent to Mayo Medical Laboratories.

    Billing
    CPT Code
    83018
    Fee Code
    32113
    NY State Approved
    No