Mercury, 24-Hour Urine

Test Code
36441

CPT Codes
83825

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 plastic, acid-washed, metal-free, leak-proof container

Patient Preparation
Avoid seafood consumption for 48 hours prior to collection.

Minimum Volume
3 mL

Other Acceptable Specimens
Please note: Test performed on a specimen submitted in a nontrace element tube/container (not acid-washed) may not accurately reflect the patient's level. If a nontrace element tube/container is received, it will be accepted for testing; however, elevated results are reported with a message that resubmission with a trace element tube/container is recommended.

Instructions
Avoid work-site collection. Collect urine in acid-washed or metal-free plastic container.

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: Mon-Sat p.m.; Report available: Same day

Reference Range
Reference Range ≤20 mcg/L
Toxic ≥150 mcg/L


Clinical Significance
Mercury, a highly toxic metal, is present in select industrial environments and in contaminated ocean fish. Urinary measurements are appropriate for assessing ongoing exposure to inorganic mercury.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153




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.