Thallium, 24-Hour Urine

Test Code

37124

CPT Codes
83018

Includes

CPT code 81050 may be added at an additional charge for volume measurement

Preferred Specimen

7 mL aliquot of a well-mixed 24-hour urine collected in a acid-washed or metal-free container

Minimum Volume

3 mL

Instructions

Avoid worksite collection. Collect urine in an acid-washed or metal-free plastic container.

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.

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 48 hours
Refrigerated: 5 days
Frozen: 14 days

Methodology
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; Report available: 3-6 days

Reference Range

Reference range	<3 mcg/L
Toxic level	>200 mcg/L

Clinical Significance

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

Performing Laboratory
Quest Diagnostics Nichols Institute Valencia
27027 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.