Lab Test

Mercury, Urine

Urine Mercury , ARUP #25050, EPIC: LAB6098, SOFT: XHGU


  • A Urine Creatinine test is performed on each sample.
  • Please refer to the Specimen Collection Manual for instructions on 24 Hour Urine Collection:
  • Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, non-essential over-the-counter medications (upon the advice of their physician), and avoid shellfish and seafood for 48 to 72 hours.
  • High concentrations of iodine may interfere with elemental testing. Abstinence from iodine-containing medications or contrast agents for at least 1 month prior to collecting specimens for elemental testing is recommended.
  • Urine collected within 48 hours after administration of a gadolinium (Gd) containing contrast media (may occur with MRI studies) will not be tested.

Specimen Collection Criteria

Collect (preferred specimen): 24 hour urine sample with no preservative.
Also acceptable: Random urine specimen in a screw-capped container (preferred) or other sterile collection cup. (Min: 1.0 mL)

  • Keep 24 hour urine specimen iced or refrigerated during collection.
  • Include start and end dates and times for the collection period on the specimen container.
Urine Preservative Options
No Preservative
6N Hydrochloric Acid
Boric Acid (10g)
Sodium Carbonate
50% Acetic Acid

Physician Office/Drawsite Specimen Preparation

Maintain specimens refrigerated (2-8°C or 36-46°F) prior to transport.

Preparation for Courier Transport

Transport: Entire 24 hour urine collection, or random urine, refrigerated (2-8°C or 36-46°F).

Rejection Criteria

  • Specimens not collected and processed as indicated.


If the sample is collected and stored in the appropriate container, the trace element values do not change with time.


Sunday - Saturday.
Results available in 2-5 days.

Reference Range

By report.

Test Methodology

Quantitative Inductively Coupled Plasma/Mass Spectrometry.


Urine mercury levels for healthy subjects (reference population) are influenced by diet and environmental background exposure. Urine mercury levels up to 50 mcg/L can result from seafood diets, primarily methylmercury, without any clinical evidence of toxicity.

Clinical Utility

This assay monitors mercury exposure (primarily inorganic mercury).

CPT Code


Test Codes

ARUP #25050, EPIC: LAB6098, SOFT: XHGU

Last Updated


Microtainer® and Vacutainer® are registered trademarks of Becton, Dickinson and Company.
UroVysion® is a registered trademark of Abbott Laboratories. ThinPrep® is a registered trademark of Hologic, Incorporated.


This directory currently reflects information only for specimens collected and/or processed at the
Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.