Thallium, 24 Hour, Urine

Test Code

13764

CPT Codes
83018<br><strong>This test code is for New York patient testing. For non-New York patient testing, see test code 37124</strong>

Preferred Specimen

10 mL of a 24-hour urine collected in a clean plastic urine collection container with no metal cap or glued insert

Patient Preparation
High concentrations of gadolinium and iodine are known to interfere with most metal tests. If either gadolimium- or iodine- containing contrast media has been administered, a specimen should not be collected for 96 hours.

Minimum Volume

0.3 mL

Instructions

1. Collect urine for 24 hours.
2. Refrigerate specimen within 4 hours of completion of 24-hour collection.
3. Aliquot 10 mL into a plastic 10 mL urine tube (T068) or a clean, plastic aliquot container with no metal cap or glued insert.
4. Do not insert any utensil or pipet into the specimen. Transfer specimen by pouring from one tube to another.

Do not collect urine in metal-based containers such as metal urinals or pans.

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 28 days
Refrigerated: 28 days
Frozen: 28 days

Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)

FDA Status
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

Setup Schedule

Set up: Tues, Fri; Report available: 2-5 days

Reference Range

0-17 years	Not established
≥18 years	<2 mcg/24 hours

Clinical Significance

Detecting toxic thallium exposure in 24-hour urine collections.

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.