Thallium, Blood

Test Code

CPT Codes

Preferred Specimen
4 mL whole blood collected in an EDTA (royal blue-top) tube

Minimum Volume
2 mL

Other Acceptable Specimens
Sodium heparin (royal blue-top) tube

Carefully clean skin prior to venipuncture. Avoid work-site collection.
Note: Tests performed on a specimen submitted in a non-trace element tube or non-acid washed/non metal free container may not accurately reflect the patient's level. If a non-trace element tube/container is received, it will be accepted for testing. However, elevated results shall be reported with a message that a re-submission with a trace element tube/container is recommended. EDTA (lavender-top) tube, Sodium heparin (green-top) and Sodium Heparin lead-free (tan-top) tubes will be run with disclaimer.

Transport Temperature
Refrigerated (cold packs)

Specimen Stability
Room temperature: 48 hours
Refrigerated: 5 days
Frozen: Unacceptable

Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
Set up: Tues, Thurs, Sat a.m.; Report available: 3-6 days

Reference Range
<5.1 mcg/L

Clinical Significance
Exposure to thallium is primarily through foods and may occur in highly selected industrial environments. Blood thallium may be used in assessing chronic toxicity.

Performing Laboratory

Quest Diagnostics Nichols Institute Valencia
27072 Tourney Road
Valencia, CA 91355-5386

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.